China Eastern Airlines Corporation Limited (CHEAF) 20-F 28 Apr 22 2021 FY Annual report (foreign) Financial data

Cover Page

Cover Page - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Registrant Name	China Eastern Airlines Corporation Limited
Entity Central Index Key	0001030475
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Document Accounting Standard	International Financial Reporting Standards
Document Annual Report	true
Entity Address, Country	CN
Document Transition Report	false
Document Shell Company Report	false
Document Registration Statement	false
Entity Incorporation, State or Country Code	F4
ICFR Auditor Attestation Flag	true
Entity Address, Address Line One	5/F, Block A2, Northern District, CEA Building
Entity Address, Address Line Two	36 Hongxiang 3rd Road
Entity Address, Address Line Three	Minhang District
Entity Address, City or Town	Shanghai
Entity File Number	1-14550
Auditor Name	PricewaterhouseCoopers Zhong Tian LLP	Ernst & Young Hua Ming LLP
Auditor Firm ID	1424	1408
Auditor Location	Shanghai, the People’s Republic of China	Shanghai, the People’s Republic of China
Entity Address, Postal Zip Code	201100
Business Contact [Member]
Document Information [Line Items]
Entity Address, Country	CN
Entity Address, Address Line One	5/F, Block A2, Northern District, CEA Building
Entity Address, Address Line Two	36 Hongxiang 3rd Road
Entity Address, Address Line Three	Minhang District
Entity Address, City or Town	Shanghai
Local Phone Number	6268-6268
Contact Personnel Fax Number	(8621) 6268-6116
City Area Code	8621
Contact Personnel Name	Zhou Qimin
Contact Personnel Email Address	ir@ceair.com
Entity Address, Postal Zip Code	201100
American Depositary Shares [member]
Document Information [Line Items]
Trading Symbol	CEA
Title of 12(b) Security	American Depositary Shares
Security Exchange Name	NYSE
Ordinary H Shares [member]
Document Information [Line Items]
Title of 12(b) Security	Ordinary H Shares, par value RMB1.00 per share
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	5,176,777,777
No Trading Symbol Flag	true
Ordinary Domestic Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	13,697,662,301

Consolidated Statements of Prof

Consolidated Statements of Profit or Loss and Other Comprehensive Income - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Profit or loss [abstract]
Revenue	¥ 67,127	¥ 58,727	¥ 120,986
Other operating income and gains	6,079	5,698	7,202
Operating expenses
Aircraft fuel	(20,593)	(13,840)	(34,191)
Take-off and landing charges	(10,251)	(9,331)	(16,457)
Depreciation and amortisation	(22,718)	(22,255)	(22,080)
Wages, salaries and benefits	(21,061)	(20,827)	(24,152)
Aircraft maintenance	(3,783)	(3,451)	(3,380)
Food and beverages	(1,655)	(1,589)	(3,667)
Low value and short-term lease rentals	(383)	(358)	(631)
Selling and marketing expenses	(1,128)	(1,570)	(4,134)
Civil aviation development fund	(852)	0	(1,831)
Ground services and other expenses	(532)	(872)	(2,476)
Impairment charges	(22)	(184)	(4)
Impairment losses on financial assets, net	(28)	(32)	(16)
Fair value changes of financial asset at fair value through profit or loss	(11)	(26)	25
Indirect operating expenses	(3,707)	(3,930)	(5,113)
Total operating expenses	(86,724)	(78,265)	(118,107)
Operating (loss)/profit	(13,518)	(13,840)	10,081
Share of result of associates	(97)	(82)	265
Share of result of joint ventures	(44)	(13)	17
Finance income	1,958	2,660	96
Finance costs	(5,812)	(5,213)	(6,160)
(Loss)/profit before income tax	(17,513)	(16,488)	4,299
Income tax credit /(expense)	4,229	3,927	(819)
(Loss)/profit for the year	(13,284)	(12,561)	3,480
(Loss)/profit is attributable to:
Equity holders of the Company	(12,214)	(11,836)	3,192
Non-controlling interests	(1,070)	(725)	288
(Loss)/profit for the year	¥ (13,284)	¥ (12,561)	¥ 3,480
(Loss)/earnings per share attributable to the equity holders of the Company:
- Basic and diluted (expressed in RMB per share)	¥ (0.73)	¥ (0.72)	¥ 0.21
Items that may be subsequently reclassified to profit or loss
-   Effective portion of changes in fair value of hedging instruments arising during the year	¥ 221	¥ 153	¥ 40
-   Reclassification adjustments for losses/(gains) included in the consolidated statement of profit or loss	(525)	57	(186)
-   Income tax effect	76	(52)	36
Items that may not be subsequently reclassified to profit or loss
-   Fair value changes of equity investments designated at fair value through other comprehensive (loss)/income, net of tax	(247)	(209)	16
-   Share of other comprehensive (loss)/income of an associate, net of tax	(7)	2	7
-   Actuarial (losses)/gains on the post-retirement benefit obligations, net of tax	(84)	(61)	40
Other comprehensive (loss)/income for the year, net of tax	(566)	(110)	(47)
Total comprehensive (loss)/income for the year	(13,850)	(12,671)	3,433
Total comprehensive (loss)/income attributable to:
Equity holders of the Company	(12,765)	(11,940)	3,141
Non-controlling interests	(1,085)	(731)	292
Total comprehensive (loss)/income for the year	¥ (13,850)	¥ (12,671)	¥ 3,433

Consolidated Statements of Fina

Consolidated Statements of Financial Position - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Non-current assets
Property, plant and equipment	¥ 93,242	¥ 101,043
Investment properties	118	166
Right-of-use assets	126,875	118,210
Intangible assets	11,713	11,718
Advanced payments on acquisition of aircraft	12,165	17,240
Investments in associates	1,777	1,793
Investments in joint ventures	484	594
Equity investments designed at fair value through other comprehensive income	457	995
Derivative financial instruments	0	37
Deferred tax assets	9,580	5,011
Other non-current assets	4,469	5,345
Non-current assets	260,880	262,152
Current assets
Flight equipment spare parts	1,799	2,054
Trade receivables	974	1,124
Prepayments and other receivables	12,089	11,198
Financial assets at fair value through profit or loss	84	95
Derivative financial instruments	0	362
Restricted bank deposits	12	12
Cash and cash equivalents	12,950	7,651
Assets classified as held for sale	2	2
Current assets	27,910	22,498
Current liabilities
Trade and bills payables	2,454	3,220
Other payables and accruals	18,745	21,619
Contract liabilities	3,287	3,671
Current portion of borrowings	44,999	57,150
Current portion of lease liabilities	16,350	14,073
Income tax payable	55	48
Current portion of provision for lease return costs for aircraft and engines	0	24
Derivative financial instruments	1	3
Current liabilities	85,891	99,808
Net current liabilities	(57,981)	(77,310)
Total assets less current liabilities	202,899	184,842
Non-current liabilities
Borrowings	50,792	30,745
Lease liabilities	82,126	82,178
Provision for lease return costs for aircraft and engines	7,270	6,966
Contract liabilities	899	1,320
Derivative financial instruments	45	138
Post-retirement benefit obligations	2,367	2,373
Other long-term liabilities	2,248	1,955
Deferred tax liabilities	0	13
Non-current liabilities	145,747	125,688
Net assets	57,152	59,154
Equity attributable to equity holder of the Company
-   Share capital	18,874	16,379
-   Reserves	34,741	39,870
Equity attributable to the equity holders of the Company	53,615	56,249
Non-controlling interests	3,537	2,905
Total equity	¥ 57,152	¥ 59,154

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - CNY (¥) ¥ in Millions	Total	Share Capital [Member]	Other Reserves [Member]	Retained earnings/ (accumulated losses) [member]	Attributable to Equity Holders of the Company [Member]	Non-controlling Interests [Member]
Beginning balance at Dec. 31, 2018	¥ 59,843	¥ 14,467	¥ 27,045	¥ 14,901	¥ 56,413	¥ 3,430
Profit (loss) for the year	3,480			3,192	3,192	288
Other comprehensive income	(47)		(51)		(51)	4
Total comprehensive income	3,433		(51)	3,192	3,141	292
Issue of shares	9,442	1,912	7,530		9,442
Dividend paid to non-controlling interests	(84)					(84)
Transfer from retained profits			212	(212)
Others	12		11	1	12
Ending balance at Dec. 31, 2019	72,646	16,379	34,747	17,882	69,008	3,638
Profit (loss) for the year	(12,561)			(11,836)	(11,836)	(725)
Other comprehensive income	(110)		(104)		(104)	(6)
Total comprehensive income	(12,671)		(104)	(11,836)	(11,940)	(731)
Dividends relating to 2019	(819)			(819)	(819)
Dividend paid to non-controlling interests	(2)					(2)
Ending balance at Dec. 31, 2020	59,154	16,379	34,643	5,227	56,249	2,905
Profit (loss) for the year	(13,284)			(12,214)	(12,214)	(1,070)
Other comprehensive income	(566)		(551)	0	(551)	(15)
Total comprehensive income	(13,850)		(551)	(12,214)	(12,765)	(1,085)
Issue of shares				0
Issue of ordinary shares, net of transaction costs and tax	10,820	2,495	8,325		10,820
Capital injection by non-controlling interests in subsidiaries	1,028		(689)		(689)	1,717
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings			(157)	157
Ending balance at Dec. 31, 2021	¥ 57,152	¥ 18,874	¥ 41,571	¥ (6,830)	¥ 53,615	¥ 3,537

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity (Parenthetical) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of changes in equity [abstract]
Consolidated reserves	¥ 34,741	¥ 39,870	¥ 52,629

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flow from operating activities
Cash generated from operations	¥ 5,828	¥ 1,480	¥ 30,137
Income tax paid	(136)	(269)	(1,165)
Net cash generated from operating activities	5,692	1,211	28,972
Cash flow from investing activities
Additions to property, plant and equipment and other non-current assets	(10,807)	(7,247)	(7,589)
Investments in associates and joint ventures	(140)		(110)
Net proceeds/(payments) from disposal of a subsidiary	117		(90)
Proceeds from disposal of property, plant and equipment	3,097	894	157
Proceeds from novation of purchase rights and others	8,793		2,366
Proceeds from disposal of intangible assets and land use rights	752	5	2
Proceeds from disposal of an equity investment	288		5
Dividends received	105	100	241
Settlement relating to derivative financial instruments	0	(28)	104
Loan to a joint venture	0	(7)
Proceeds from repayment of loans to a joint venture	4	0	15
Net cash generated from/(used in) investing activities	2,155	(6,283)	(4,899)
Cash flows from financing activities
Proceeds from issue of shares	10,820		9,442
Capital injection by non-controlling interests in a subsidiary	283
Proceeds from drarw-down of short-term bank loans	55,954	28,883	6,986
Proceeds from drarw-down of long-term bank loans	20,279	10,823	300
Proceeds from issuance of short-term debentures	39,000	77,200	39,000
Proceeds from issuance of long-term debentures and bonds	11,386	1,998	7,755
Proceeds from sales-leaseback of aircraft	686
Repayments of short-term bank loans	(40,329)	(9,130)	(12,868)
Repayments of long-term bank loans	(4,490)	(1,948)	(4,033)
Repayments of short-term debentures	(65,500)	(69,200)	(35,000)
Repayments of long-term debentures and bonds	(8,523)	(2,453)	(5,567)
Repayments of principal of lease liabilities	(15,725)	(18,439)	(23,895)
Interest paid	(6,307)	(5,482)	(5,494)
Settlement relating to derivative financial instruments	(60)	(4)	82
Dividends paid to Company's shareholders	0	(819)	0
Dividends paid to non-controlling interests of subsidiaries	0	(3)	(83)
Net cash (used in)/generated from financing activities	(2,526)	11,426	(23,375)
Net increase in cash and cash equivalents	5,321	6,354	698
Cash and cash equivalents at beginning of the year	7,651	1,350	646
Effects of exchange rate changes on cash and cash equivalents	(22)	(53)	6
Cash and cash equivalents at end of the year	¥ 12,950	¥ 7,651	¥ 1,350

Corporate Information

Corporate Information	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Corporate Information	1. Corporate information China Eastern Airlines Corporation Limited (the “Company”), a joint stock company limited by shares was established in the People’s Republic of China (the “PRC”) on April 14, 1995. The address of the Company’s registered office is 66 Airport Street, Pudong International Airport, Shanghai, the PRC. The Company and its subsidiaries (together, the “Group”) are principally engaged in the operation of civil aviation, including the provision of passenger, cargo, mail delivery and other extended transportation services. In the opinion of the directors of the Company, the holding company and ultimate holding company of the Company is China Eastern Air Holding Company Limited (“CEA Holding”), a state-owned enterprise established in the PRC. The A shares, H shares and American Depositary Shares of the Company are listed on the Shanghai Stock Exchange, the Stock Exchange of Hong Kong Limited and the New York Stock Exchange, respectively. These financial statements were approved and authorised for issue by the Company’s Board of Directors (the “Board”) on April 28, 2022.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Significant Accounting Policies	2 Summary of significant accounting policies The principal accounting policies applied in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated. 2.1 Basis of preparation The accompanying consolidated financial statements have been prepared in accordance with all applicable International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) . They have been prepared under the historical cost convention, except for equity investments designated at fair value through other comprehensive income, financial assets at fair value through profit or loss and derivative financial instruments which have been measured at fair value. These financial statements are presented in Renminbi (“RMB”) and all values are rounded to the nearest million except when otherwise indicated. (i) Going concern In 2021, the Group incurred net loss of RMB13.28 billion. As at December 31, 2021, the Group’s current liabilities exceeded its current assets by approximately RMB 57.98 billion. In preparing the financial statements, the Board has conducted a detailed review over the Group’s going concern ability based on its financial condition and operating results. The Board has also considered the following factors: • Sufficient unutilized banking facilities as at December 31, 2021; • The Group’s sound credit standing and history of cooperation with banks and other financial institutions; and • The Group’s expected net cash inflows from operating activities for not less than 12 months starting from the period end of the financial statements, considering the recovery of flights and the Group’s major operating costs including fuel prices during such period. The Board believes that the Group has sufficient source of financing to enable it to operate, as well as to meet its liabilities as and when they become due, and to support its the capital expenditures in the forseeable future of not less than twelve months starting from the period end of the financial statements. Accordingly, the Board continued to prepare the Group’s financial statements as of and for the year ended December 31, 2021 on a going concern basis. (ii) New and amended standards adopted by the Group The Group has applied the following amendments for the first time for their annual reporting period commencing January 1, 2021: Amendment to IFRS 16 - COVID-19-related The Group has early adopted the amendment to IFRS 16. The Group previously applied the practical expedient in IFRS 16 such that as lessee it was not required to assess whether rent concessions occurring as a direct consequence of the COVID-19 The eligible rent concessions are accounted for as negative variable lease payments, and are recognised in profit or loss in the period in which the event or condition that triggers those payments occurred. There is no impact on the opening balance of equity at January 1 st Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16 - Interest Rate Benchmark Reform - Phase 2 The amendments focus on accounting reliefs once a new benchmark interest rate is in place. The reliefs have the effect that changing the basis for determining contractual cash flows for financial assets, financial liabilities and lease liabilities, that are as a direct consequence of the Inter-Bank Offered Rate (“IBOR”) reform and are economically equivalent, will not result in an immediate gain or loss in the profit or loss. The amendments also provide reliefs to allow hedge accounting to continue when the hedging relationships are directly affected by IBOR reform. The amendments do not have an impact on the current reporting period as the Group has not moved any existing contracts to new benchmark interest rates. In addition, the Group considers that uncertainty remains over the timing and/or amounts of future cash flows indexed to benchmark interest rates and thus the Group continues to apply the existing accounting policies. (iii) New standards and interpretations not yet adopted Certain new accounting standards, amendments to accounting standards and interpretations have been published that are not mandatory for December 31, 2021 reporting periods and have not been early adopted by the Group. These standards, amendments or interpretations are not expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions. Effective for accounting year beginning on or after Amendments to IAS 16 - Property, Plant and Equipment: Proceeds before Intended Use January 1, 2022 Amendments to IFRS 3 - Reference to the Conceptual Framework January 1, 2022 Amendments to IAS 37 - Onerous Contracts — Cost of Fulfilling a Contract January 1, 2022 Annual Improvements to IFRS Standards 2018–2020 January 1, 2022 IFRS 17 - Insurance Contracts January 1, 2023 (deferred from January 1, 2021) Amendments to IAS 1 - Classification of Liabilities as Current or Non-current January 1, 2023 (deferred from January 1, 2022) Amendments to IAS 1 and IFRS Practice Statement 2- Disclosure of Accounting Policies January 1, 2023 Amendments to IAS 8 - Definitions of Accounting Estimates January 1, 2023 Amendments to IAS 12 - Deferred Tax related to Assets and Liabilities arising from a Single Transaction January 1, 2023 Amendments to IFRS 10 and IAS 28 - Sale or Contribution of Assets between an Investor and its Associate or Joint Venture To be determined Certain new accounting standards, amendments to accounting standards and interpretations have been published that are not mandatory for December 31, 2021 reporting periods and have not been early adopted by the Group. These standards, amendments or interpretations are not expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions. 2.2 Principles of consolidation (i) Subsidiaries Subsidiaries are all entities (including structured entities) over which the G The acquisition method of accounting is used to account for business combinations by the Group (refer to note 2.3). Inter-company transactions, balances and unrealised gains on transactions between Group companies are eliminated. Unrealised losses are also eliminated unless the transaction provides evidence of an impairment of the transferred asset. Accounting policies of subsidiaries have been changed where necessary to ensure consistency with the policies adopted by the Group. Non-controlling (ii) Associates Associates are all entities over which the Group has significant influence but not control or joint control. This is generally the case where the Group holds between 20% and 50% of the voting rights. Investments in associates are accounted for using the equity method of accounting (see (iv) below), after initially being recognised at cost. (iii) Joint ventures Interests in joint ventures are accounted for using the equity method (see (iv) below), after initially being recognised at cost in the consolidated balance sheet. (iv) Equity method Under the equity method of accounting, the investments are initially recognised at cost and adjusted thereafter to recognise the Group’s share of the post-acquisition profits or losses of the investee in profit or loss, and the Group’s share of movements in other comprehensive income of the investee in other comprehensive income. Dividends received or receivable from associates and joint ventures are recognised as a reduction in the carrying amount of the investment. Where the Group’s share of losses in an equity-accounted investment equals or exceeds its interest in the entity, including any other unsecured long-term receivables, the Group does not recognise further losses, unless it has incurred obligations or made payments on behalf of the other entity. Unrealised gains on transactions between the Group and its associates and joint ventures are eliminated to the extent of the Group’s interest in these entities. Unrealised losses are also eliminated unless the transaction provides evidence of an impairment of the asset transferred. Accounting policies of equity-accounted investees have been changed where necessary to ensure consistency with the policies adopted by the Group. The carrying amount of equity-accounted investments is tested for impairment in accordance with the policy described in note 2.18. (v) Changes in ownership interests The Group treats transactions with non-controlling non-controlling non-controlling When the Group ceases to consolidate or equity account for an investment because of a loss of control, joint control or significant influence, any retained interest in the entity is remeasured to its fair value, with the change in carrying amount recognised in profit or loss. This fair value becomes the initial carrying amount for the purposes of subsequently accounting for the retained interest as an associate, joint venture or financial asset. In addition, any amounts previously recognised in other comprehensive income in respect of that entity are accounted for as if the Group had directly disposed of the related assets or liabilities. This may mean that amounts previously recognised in other comprehensive income are reclassified to profit or loss. If the ownership interest in a joint venture or an associate is reduced but joint control or significant influence is retained, only a proportionate share of the amounts previously recognised in other comprehensive income are reclassified to profit or loss where appropriate. 2.3 Business combinations The acquisition method of accounting is used to account for all business combinations, regardless of whether equity instruments or other assets are acquired. The consideration transferred for the acquisition of a subsidiary comprises the: • fair values of the assets transferred • liabilities incurred to the former owners of the acquired business • equity interests issued by the Group • fair value of any asset or liability resulting from a contingent consideration arrangement, and • fair value of any pre-existing Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are, with limited exceptions, measured initially at their fair values at the acquisition date. The Group recognises any non-controlling acquisition-by-acquisition non-controlling Acquisition-related costs are expensed as incurred. The excess of the consideration transferred, amount of any non-controlling Where settlement of any part of cash consideration is deferred, the amounts payable in the future are discounted to their present value as at the date of exchange. The discount rate used is the entity’s incremental borrowing rate, being the rate at which a similar borrowing could be obtained from an independent financier under comparable terms and conditions. Contingent consideration is classified either as equity or a financial liability. Amounts classified as a financial liability are subsequently remeasured to fair value, with changes in fair value recognised in profit or loss. If the business combination is achieved in stages, the acquisition date carrying value of the acquirer’s previously held equity interest in the acquiree is remeasured to fair value at the acquisition date. Any gains or losses arising from such remeasurement are recognised in profit or loss. 2.4 Separate financial statements Investments in subsidiaries are accounted for at cost less impairment. Cost includes direct attributable costs of investment. The results of subsidiaries are accounted for by the company on the basis of dividend received and receivable. Impairment testing of the investments in subsidiaries is required upon receiving a dividend from these investments if the dividend exceeds the total comprehensive income of the subsidiary in the period the dividend is declared or if the carrying amount of the investment in the separate financial statements exceeds the carrying amount in the consolidated financial statements of the investee’s net assets including goodwill. 2.5 Segment reporting Operating segments are reported in a manner consistent with the internal reporting provided to the chief operating decision maker(“CODM”). The CODM, who is responsible for allocating resources and assessing performance of the operating segments, has been identified as the office of the General Manager that makes strategic decisions. 2.6 Foreign currency translation (i) Functional and presentation currency Items included in the financial statements of each of the Group’s entities are measured using the currency of the primary economic environment in which the entity operates (the “functional currency”). The financial statements are presented in“RMB”, which is the functional and presentation currency of the Company and the Group’s entities. (ii) Transactions and balances Foreign currency transactions are translated into the functional currency using the exchange rates at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions, and from the translation of monetary assets and liabilities denominated in foreign currencies at year end exchange rates, are generally recognised in profit or loss. They are deferred in equity if they relate to qualifying cash flow hedges and qualifying net investment hedges. Foreign exchange gains and losses that relate to borrowings and cash and cash equivalents are presented in profit or loss within “finance income” or “finance costs”. 2.7 Revenue recognition (i) Revenue from contracts with customers Revenue from contracts with customers is recognised when control of goods or services is transferred to the customers at an amount that reflects the consideration to which the Group expects to be entitled in exchange for those goods or services. When the consideration in a contract includes a variable amount, the amount of consideration is estimated to which the Group will be entitled in exchange for transferring the goods or services to the customer. The variable consideration is estimated at contract inception and constrained until it is highly probable that a significant revenue reversal in the amount of cumulative revenue recognised will not occur when the associated uncertainty with the variable consideration is subsequently resolved. When the contract contains a financing component which provides the customer with a significant benefit of financing the transfer of goods or services to the customer for more than one year, revenue is measured at the present value of the amount receivable, discounted using the discount rate that would be reflected in a separate financing transaction between the Group and the customer at contract inception. When the contract contains a financing component which provides the Group with a significant financial benefit for more than one year, revenue recognised under the contract includes the interest expense accreted on the contract liability under the effective interest method. For a contract where the period between the payment by the customer and the transfer of the promised goods or services is one year or less, the transaction price is not adjusted for the effects of a significant financing component, using the practical expedient in IFRS 15. 2.7 Revenue recognition (i) Revenue from contracts with customers (a) Provision of services Traffic revenue Passenger, cargo and mail revenues are recognised as traffic revenue when the transportation is provided or when ticket breakage occurs. The value of sold but unused tickets is included in contract liabilities as sales in advance of carriage (“SIAC”). The Group estimates the value of passenger ticket breakage based on historical trends and experience and recognises revenue at the scheduled flight date. Commission income Commission income represents amounts earned from other carriers in respect of sales made by the Group on their behalf, and is recognised upon ticket sales. Other operations incomes Revenues from the provision of ground services, ticket cancellation services and other travel related services are recognised when the services are rendered. (b) Frequent flyer programme The Group operates a frequent flyer programme called “Eastern Miles” that issues mileage points to program members based on accumulated mileage. Mileage points can be used to redeem for free or discounted goods or tickets until expiration. The frequent flyer programme provides a significant right to the customers and the Group treats it as a separate performance obligation. The Group defers a portion of passenger revenue attributable to the mileage points issued based on the relative stand-alone selling price approach and recognises revenue when the mileage points are redeemed and performance obligations are fulfilled or the mileage points expire unused. The stand-alone selling price of the mileage points was estimated based on the historical prices of equivalent flights and goods provided for mileage points redeemed and was adjusted for mileage points that are not expected to be redeemed (“Breakage”). (c) Sale of goods Revenue from the sale of goods is recognised at the point in time when control of the asset is transferred to the customer. (d) Contract liabilities A contract liability is recognised when a payment is received or a payment is due (whichever is earlier) from a customer before the Group transfers the related goods or services. Contract liabilities are recognised as revenue when the Group performs under the contract (i.e., transfers control of the related goods or services to the customer). (ii) Revenue from other sources Rental income is recognised on a time proportion basis over the lease terms. Variable lease payments that do not depend on an index or a rate are recognised as income in the accounting period in which they are incurred. 2.8 Government grants Government grants are recognised at their fair value where there is a reasonable assurance that the grant will be received and the Group will comply with all attached conditions. When the grant relates to an expense item, it is recognised as income on a systematic basis over the periods that the costs, for which it is intended to compensate are expensed. Where the grant relates to an asset, the fair value is credited to a deferred income account and is released to profit or loss over the expected useful life of the relevant asset by equal annual instalments. 2.9 Maintenance and overhaul costs Overhaul costs that meet specific recognition criteria are capitalised as a component of property, plant and equipment or right-of-use Certain lease arrangements contain provisions for the Group‘s obligations to fulfil certain return conditions at the end of lease term. The Group estimated lease return costs for aircraft and engines and recognised such costs as part of the right-of-use All other repairs and maintenance costs are charged to profit or loss as and when incurred. 2.10 Interest income Interest income is calculated by applying the effective interest rate to the gross carrying amount of a financial asset except for financial assets that subsequently become credit-impaired. For credit-impaired financial assets the effective interest rate is applied to the net carrying amount of the financial asset (after deduction of the loss allowance). 2.11 Dividend income Dividends are received from financial assets measured at fair value through profit or loss (FVPL) and at fair value through other comprehensive income (FVOCI). Dividends are recognised as other income in profit or loss when the right to receive payment is established. This applies even if they are paid out of pre-acquisition 2.12 Borrowing costs General and specific borrowing costs that are directly attributable to the acquisition, construction or production of a qualifying asset are capitalised during the period of time that is required to complete and prepare the asset for its intended use or sale. Qualifying assets are assets that necessarily take a substantial period of time to get ready for their intended use or sale. Investment income earned on the temporary investment of specific borrowings pending their expenditure on qualifying assets is deducted from the borrowing costs eligible for capitalisation. Other borrowing costs are expensed in the period in which they are incurred. 2.13 Income tax Income tax comprises current and deferred tax. Income tax relating to items recognised outside profit or loss is recognised outside profit or loss, either in other comprehensive income or directly in equity. Current tax assets and liabilities are measured at the amount expected to be recovered from or paid to the taxation authorities, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period, taking into consideration interpretations and practices prevailing in the countries in which the Group operates. Deferred tax is provided, using the liability method, on all temporary differences at the end of the reporting period between the tax bases of assets and liabilities and their carrying amounts for financial reporting purposes. Deferred tax liabilities are recognised for all taxable temporary differences, except: (i) when the deferred tax liability arises from the initial recognition of goodwill or an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; and (ii) in respect of taxable temporary differences associated with investments in subsidiaries, associates and joint ventures, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Deferred tax assets are recognised for all deductible temporary differences, and the carryforward of unused tax credits and any unused tax losses. Deferred tax assets are recognised to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carryforward of unused tax credits and unused tax losses can be utilised, except: (i) when the deferred tax asset relating to the deductible temporary differences arises from the initial recognition of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; and (ii) in respect of deductible temporary differences associated with investments in subsidiaries, associates and joint ventures, deferred tax assets are only recognised to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which the temporary differences can be utilised. The carrying amount of deferred tax assets is reviewed at the end of each reporting period and reduced to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be utilised. Unrecognised deferred tax assets are reassessed at the end of each reporting period and are recognised to the extent that it has become probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be recovered. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realised or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. Deferred tax assets and deferred tax liabilities are offset if and only if the Group has a legally enforceable right to set off current tax assets and current tax liabilities and the deferred tax assets and deferred tax liabilities relate to income taxes levied by the same taxation authority on either the same taxable entity or different taxable entities which intend either to settle current tax liabilities and assets on a net basis, or to realise the assets and settle the liabilities simultaneously, in each future period in which significant amounts of deferred tax liabilities or assets are expected to be settled or recovered. 2.14 Intangible assets (i) Goodwill Goodwill is measured as described in note 2.3. Goodwill on acquisitions of subsidiaries is included in intangible assets. Goodwill is not amortised, but it is tested for impairment annually, or more frequently if events or changes in circumstances indicate that it might be impaired, and is carried at cost less accumulated impairment losses. Gains and losses on the disposal of an entity include the carrying amount of goodwill relating to the entity sold. Goodwill is allocated to cash-generating units for the purpose of impairment testing. The allocation is made to those cash-generating units or groups of cash-generating units that are expected to benefit from the business combination in which the goodwill arose. The units or groups of units are identified at the lowest level at which goodwill is monitored for internal management purposes, being the operating segments (ii) Computer software costs Acquired computer software licences are capitalised on the basis of the costs incurred to acquire and bring to use the specific software. These costs are amortised using the straight-line method over their estimated useful lives of 5 years. Costs associated with developing or maintaining computer software programs are recognised as expenses when incurred. 2.15 Deferred pilot recruitment costs Deferred pilot recruitment costs represent the costs borne by the Group in connection with securing a certain minimum period of employment of pilots and are amortised on a straight-line basis over the anticipated beneficial period of 5 years, starting from the date the pilot joins the Group. 2.16 Property, plant and equipment Property, plant and equipment, other than construction in progress, are stated at cost less accumulated depreciation and any impairment losses. When an item of property, plant and equipment is classified as held for sale or when it is part of a disposal group classified as held for sale, it is not depreciated and is accounted for in accordance with IFRS 5, as further explained in the accounting policy for “Non-current The cost of an item of property, plant and equipment comprises its purchase price and any directly attributable costs of bringing the asset to its working condition and location for its intended use. When each major aircraft overhaul is performed, its cost is recognised in the carrying amount of the item of property, plant and equipment and is depreciated over the appropriate maintenance cycles. Components related to airframe overhaul cost, are depreciated on a straight-line basis over 5 to 7.5 years. Components related to engine overhaul costs, are depreciated between each overhaul period using the ratio of actual flying hours and estimated flying hours between overhauls. Upon completion of an overhaul, any remaining carrying amount of the cost of the previous overhaul is derecognised and charged to profit or loss. Except for components related to overhaul costs, the depreciation method of which has been described in the preceding paragraph, other depreciation of property, plant and equipment is calculated using the straight-line method to write off their costs to their residual values over their estimated useful lives, as follows: Owned aircraft and engines 20 years Other flight equipment, including rotables 10 years Buildings 8 to 35 years Other property, plant and equipment 3 to 20 years Where parts of an item of property, plant and equipment have different useful lives, the cost of that item is allocated on a reasonable basis among the parts and each part is depreciated separately. The assets’ residual values and useful lives are reviewed, and adjusted if appropriate, at the end of each reporting period. An asset’s carrying amount is written down immediately to its recoverable amount if the asset’s carrying amount is greater than its estimated recoverable amount. Gains and losses on disposals are determined by comparing proceeds with carrying amount. These are included in profit or loss. When revalued assets are sold, it is group policy to transfer any amounts included in other reserves in respect of those assets to retained earnings. Construction in progress represents a building under construction, which is stated at cost less any impairment losses, and is not depreciated. Cost comprises the direct costs of construction and capitalised borrowing costs on related borrowed funds during the period of construction. Construction in progress is reclassified to the appropriate category of property, plant and equipment when completed and ready for use. 2.17 Investment properties Investment properties are interests in land and buildings held to earn rental income and/or for capital appreciation, rather than for use in the production or supply of goods or services or for administrative purposes, or for sale in the ordinary course of business. Such properties are measured initially at cost, including related transaction costs. After initial recognition, the Group chooses the cost model to measure all of its investment properties. Depreciation is calculated on the straight-line basis to write off the cost to its residual value over its estimated useful life. The estimated useful lives are as follows: Buildings 20 to 35 years The carrying amounts of investment properties measured using the cost method are reviewed for impairment when events or changes in circumstances indicate that the carrying amounts may not be recoverable. Any gains or losses on the retirement or disposal of an investment property are recognised in profit or loss in the year of the retirement or disposal. 2.18 Impairment of non-financial Goodwill and intangible assets that have an indefinite useful life are not subject to amortisation and are tested annually for impairment, or more frequently if events or changes in circumstances indicate that they might be impaired. Other assets are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment loss is recognised for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s fair value less costs of disposal and value in use. For the purposes of assessing impairment, assets are grouped at the lowest levels for which there are separately identifiable cash inflows which are largely independent of the cash inflows from other assets or groups of assets (cash-generating units). Non-financial 2.19 Non-current Non-current Non-current 2.20 Advanced payments on acquisition of aircraft Advanced payments on acquisition of aircraft represent payments to aircraft manufacturers to secure deliveries of aircraft in future years, including attributable borrowing costs, and are included in non-current 2.21 Flight equipment spare parts Flight equipment spare parts are stated at the lower of cost and net realisable value. Cost is determined using the weighted average method. The cost of flight equipment spare parts comprises the purchase price (net of discounts), freight charges, duty and other miscellaneous charges. Net realisable value is the estimated selling price of the flight equipment spare parts in the ordinary course of business, less applicable selling expenses. 2.22 Investments and other financial assets (i) Initial recognition and measurement Financial assets are classified, at initial recognition, as subsequently measured at amortised cost, fair value through other comprehensive income, and fair value through profit or loss. The classification of financial assets at initial recognition depends on the financial asset’s contractual cash flow characteristics and the Group’s business model for managing them. With the exception of trade receivables that do not contain a significant financing component or for which the Group has applied the practical expedient of not adjusting the effect of a significant financing component, the Group initially measures a financial asset at its fair value, plus in the case of a financial asset not at fair value through profit or loss, transaction costs. Trade receivables that do not contain a significant financing component or for which the Group has applied the practical expedient are measured at the transaction price determined under IFRS 15 in accord

Critical Accounting Estimates a

Critical Accounting Estimates and Judgements	12 Months Ended
	Dec. 31, 2021
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Critical Accounting Estimates and Judgements	3 Critical accounting estimates and judgements Estimates and judgements used in preparing the financial statements are continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. The Group makes estimates and assumptions concerning the future. The resulting accounting estimates will, by definition, seldom equal the related actual results. The estimates and assumptions that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year are discussed below. (a) Passenger ticket breakage The Group recognises traffic revenues in accordance with the accounting policy stated in Note 2.7 to the consolidated financial statements. Passenger ticket breakage is recognised as revenue based on estimates. The Group estimates the value of passenger ticket breakage, reduces contract liabilities and recognises revenue at the scheduled flight date using a portfolio-based approach. The breakage rate is estimated and constrained by reference to the historical trend of passenger ticket breakage. (b) Recognition of contract liabilities for frequent flyer programme Passenger ticket sales earning mileage points under the Company’s frequent flyer programme provide customers with mileage points earned and air transportation. A portion of passenger revenue attributable to the mileage points issued is deferred based on the relative stand-alone selling price approach. Significant assumptions are used in determining the estimated stand-alone selling price of mileage points, including the historical prices of equivalent flights and goods provided, which is estimated by reference to the quantitative value a program member receives by redeeming mileage points for flights and goods, and the estimated Breakage. The Breakage is estimated considering historical redemption pattern, current industry and economic trends and other relevant factors. Changes in the significant assumptions could have a significant effect on the balance of contract liabilities for frequent flyer programme and the results of operations. (c) Provision for lease return costs for aircraft and engines Provision for lease return costs for aircraft and engines is recognised as part of the right-of-use (d) Retirement benefits The Group operates and maintains a defined retirement benefit plan which provides eligible retirees with benefits including retirement subsidies, transportation allowance as well as other welfare. The cost of providing the aforementioned benefits in the defined retirement benefit plan is actuarially determined and recognised over the employee’s service period by utilising various actuarial assumptions and using the projected unit credit method in accordance with the accounting policy stated in Note 2.31 to the consolidated financial statements. These assumptions include, without limitation, the selection of discount rate and annual rate of increase of per capita benefit payment. The discount rate is based on management’s review of government bonds. The annual rate of increase of benefit payments is based on the general local economic conditions. Additional information regarding the retirement benefit plan is disclosed in Note 39 to the consolidated financial statements. (e) Deferred income tax Deferred tax assets are recognised for unused tax losses and deductible temporary difference to the extent that it is probable that taxable profit will be available against which the losses and deductible temporary difference, and the carry forward of unused tax credits and unused tax losses can be utilised. Significant management judgement is required to determine the amount of deferred tax assets that can be recognised, based upon the likely timing and level of future taxable profits together with future tax planning strategies. To determine the future taxable profits, reference was made to the latest available profit forecast. The key assumptions adopted in the future taxable profit forecast include revenue growth rates and gross margin rates. (f) Estimated impairment of long-term assets (other than goodwill) The Group tests whether property, plant and equipment, right-of-use advanced payments on acquisition of aircraft and other non-current (g) Impairment of goodwill The Group determines whether goodwill is impaired at least on an annual basis. This requires an estimation of the recoverable amount which is the higher of its value in use and its fair value less costs of disposal. The Group uses the value in use of the cash-generating unit to which the goodwill is allocated to determine the recoverable amount. The cash flow projections used to determine the value in use of a cash-generating unit, including the airline transportation operations cash-generating unit, is based on significant assumptions, such as revenue growth rates, long term growth rate, gross margin rates, and discount rate applied to the projected cash flows. These assumptions may be affected by unexpected changes in future market or economic conditions. (h) Leases — estimating the incremental borrowing rate The Group cannot readily determine the interest rate implicit in a lease, and therefore, it uses an incremental borrowing rate (“IBR”) to measure lease liabilities. The IBR is the rate of interest that the Group would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use (i) Depreciation of property, plant and equipment and right-of-use Depreciation of components related to the owned and leased airframe and engine overhaul costs are based on the Group’s historical experience with similar airframe and engine models and taking into account anticipated overhauls costs, timeframe between each overhaul, ratio of actual flying hours and estimated flying hours between overhauls. Different judgments or estimates could significantly affect the estimated depreciation charge and the results of operations. Except for components related to the owned and leased airframe and engine overhaul costs, other property, plant and equipment are depreciated on a straight-line basis over the estimated useful lives, after taking into account the estimated residual value. The useful lives are based on the Group’s historical experience with similar assets and taking into account anticipated technological changes. The Group reviews the estimated useful lives of assets regularly in order to determine the amount of depreciation expense to be recorded during any reporting period. The depreciation expense for future periods is adjusted if there are significant changes from previous estimates.

Operating Segment Information

Operating Segment Information	12 Months Ended
	Dec. 31, 2021
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Operating Segment Information	4 Operating segment information (a) CODM, office of the General Manager, reviews the Group’s internal reporting in order to assess performance and allocate resources. The Group has one reportable operating segment, reported as “airline transportation operations”, which comprises the provision of passenger, cargo, mail delivery and ground service. Other services including primarily tour operations, air catering and other miscellaneous services are not included within the airline transportation operations segment, as their internal reports are separately provided to the CODM. The results of these operations are included in the “other segments” column. Inter-segment transactions are entered into under normal commercial terms and conditions that would be available to unrelated third parties. In accordance with IFRS 8, segment disclosure has been presented in a manner that is consistent with the information used by the Group’s CODM. The Group’s CODM monitors the results, assets and liabilities attributable to each reportable segment based on financial results prepared under the PRC Accounting Standards for Business Enterprises (the “PRC Accounting Standards”), which differ from IFRSs in certain aspects. The amount of each material reconciling item from the Group’s reportable segment revenues and profit/(loss) before income tax, arising from different accounting policies is set out in Note 4(c) below. The segment results for the year ended December 31, 2021 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million Segment revenue Reportable segment revenue from external customers 66,812 315 — — 67,127 Inter-segment sales — 1,006 (1,006 ) — — Reportable segment revenue 66,812 1,321 (1,006 ) — 67,127 Reportable segment loss before income tax (17,889 ) 374 — 2 (17,513 ) Other segment information Depreciation and amortisation 22,441 277 — — 22,718 Impairment charges/impairment losses on financial assets, net 48 2 — — 50 Interest income 354 — (15 ) — 339 Interest expenses 5,811 16 (15 ) — 5,812 Capital expenditure 30,846 169 — — 31,015 (a) CODM, office of the General Manager, reviews the Group’s internal reporting in order to assess performance and allocate resources. (Continued) The segment results for year ended December 31, 2020 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million Segment revenue Reportable segment revenue from external customers 58,337 302 — — 58,639 Inter-segment sales — 1,499 (1,499 ) — — Reportable segment revenue 58,337 1,801 (1,499 ) — 58,639 Reportable segment loss before income tax (17,062 ) 684 — (103 ) (16,481 ) Other segment information Depreciation and amortisation 21,965 283 — — 22,248 Impairment charges/impairment losses on financial assets, net 215 1 — — 216 Interest income 178 1 (13 ) — 166 Interest expenses 5,212 15 (13 ) — 5,214 Capital expenditure 17,778 639 — — 18,417 The segment results for year ended December 31, 2019 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million Segment revenue Reportable segment revenue from external customers 119,240 1,620 — — 120,860 Inter-segment sales — 2,052 (2,052 ) — — Reportable segment revenue 119,240 3,672 (2,052 ) — 120,860 Reportable segment profit before income tax 2,745 1,164 — 393 4,302 Other segment information Depreciation and amortisation 21,816 261 — — 22,077 Impairment charges/impairment losses on financial assets, net 20 — — — 20 Interest income 108 1 (13 ) — 96 Interest expenses 5,152 30 (13 ) — 5,169 Capital expenditure 42,853 303 — — 43,156 (a) CODM, office of the General Manager, reviews the Group’s internal reporting in order to assess performance and allocate resources. (Continued) The segment assets and liabilities as at December 31, 2021 and December 31, 2020 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million At December 31, 2021 Reportable segment assets 280,976 4,376 (1,606 ) 2,802 286,548 Reportable segment liabilities 230,799 2,398 (1,606 ) 47 231,638 At December 31, 2020 Reportable segment assets 275,028 5,510 (1,736 ) 3,606 282,408 Reportable segment liabilities 224,862 2,228 (1,736 ) 142 225,496 * Unallocated assets primarily represent investments in associates and joint ventures, derivative financial instruments, financial asset at fair value through profit or loss and equity instruments designated at fair value through other comprehensive income. Unallocated results primarily represent the share of results of associates and joint ventures, fair value changes of financial asset at fair value through profit or loss and dividend income relating to equity investments at fair value through profit or loss. (b) The Group’s business operates in three main geographical areas, even though they are managed on a worldwide basis. The Group’s revenues by geographical area are analysed based on the following criteria: (1) Traffic revenue from services within Mainland China (the PRC excluding the Hong Kong Special Administrative Region (“Hong Kong”), Macau Special Administrative Region (“Macau”) and Taiwan, collectively known as “Regional”) is classified as domestic operations. Traffic revenue from inbound and outbound services between overseas markets excluding Regional is classified as international operations (2) Revenue from ticket handling services, ground services and other miscellaneous services are classified on the basis of where the services are performed 2021 2020 2019 RMB million RMB million RMB million Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 56,133 45,479 80,058 International 10,553 12,759 37,082 Regional (Hong Kong, Macau and Taiwan) 441 489 3,846 67,127 58,727 120,986 (3) The major revenue-earning assets of the Group are its aircraft, all of which are registered in the PRC. Since the Group’s aircraft are deployed flexibly across its route network, there is no suitable basis of allocating such assets and the related liabilities by geographic area and hence segment non-current non-current (c) Reconciliation of reportable segment revenues, Year ended December 31, 2021 2020 2019 Note RMB million RMB million RMB million Revenue Reportable segment revenue 67,127 58,639 120,860 —   Reclassification of taxes relating to the expired tickets (i ) — 88 126 Consolidated revenue 67,127 58,727 120,986 Year ended December 31, 2021 2020 2019 Note RMB million RMB million RMB million (Loss)/profit before income tax Reportable segment (loss)/profit (17,513 ) (16,481 ) 4,302 — Differences in depreciation charges for aircraft and engines (ii ) — (7 ) (3 ) Consolidated (loss)/profit before income tax (17,513 ) (16,488 ) 4,299 As at December 31, 2021 2020 Note RMB RMB Assets Reportable segment assets 286,548 282,408 — Differences in depreciation charges for aircraft and engines due to different depreciation lives (ii ) — — — Difference in intangible asset arising from the acquisition of Shanghai Airlines (iii ) 2,242 2,242 Consolidated assets 288,790 284,650 (c) Reconciliation of reportable segment revenues, profit, assets and liabilities to the consolidated figures as reported in the consolidated financial statements: (Continued) Notes: (i) The difference represents the different classification of sales related taxes under the PRC Accounting Standards and IFRSs. (ii) The difference is attributable to the differences in the useful lives and residual values of aircraft and engines adopted for depreciation purposes in prior years under the PRC Accounting Standards and IFRSs. Despite the depreciation policies of these assets which have been unified under IFRSs and the PRC Accounting Standards in recent years, the changes were applied prospectively as changes in accounting estimates which result in the differences in the carrying amounts and related depreciation charges under IFRSs and the PRC Accounting Standards. (iii) The difference represents the different measurement of the fair value of acquisition cost of the shares from Shanghai Airlines between the PRC Accounting standards and IFRSs, which results in the different measurement of goodwill.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2021
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Revenue	5 Revenue An analysis of revenue is as follows: Year ended December 31, 2021 2020 2019 RMB million RMB million RMB million Revenue from contracts with customers 66,887 58,470 120,796 Revenue from other sources — Rental income 240 257 190 67,127 58,727 120,986 (a) Disaggregated revenue information for revenue from contracts with customers: For the year ended December 31, 2021 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Types of goods or services Traffic revenues — Passenger 54,105 — 54,105 — Cargo and mail 8,309 — 8,309 Ticket cancellation and commission service 2,115 — 2,115 Ground service income 756 — 756 Others 1,287 315 1,602 Total revenue from contracts with customers 66,572 315 66,887 Geographical markets Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 55,578 315 55,893 International 10,553 — 10,553 Regional (Hong Kong, Macau and Taiwan) 441 — 441 Total revenue from contracts with customers 66,572 315 66,887 For the year ended December 31, 2020 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Types of goods or services Traffic revenues — Passenger 49,215 — 49,215 — Cargo and mail 4,895 — 4,895 Ticket cancellation and commission service 2,206 — 2,206 Ground service income 818 — 818 Others 1,034 302 1,336 Total revenue from contracts with customers 58,168 302 58,470 Geographical markets Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 44,920 302 45,222 International 12,759 — 12,759 Regional (Hong Kong, Macau and Taiwan) 489 — 489 Total revenue from contracts with customers 58,168 302 58,470 For the year ended December 31, 2019 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Types of goods or services Traffic revenues — Passenger 110,416 — 110,416 — Cargo and mail 3,826 — 3,826 Ticket cancellation and commission service 2,485 — 2,485 Ground service income 1,180 — 1,180 Others 1,269 1,620 2,889 Total revenue from contracts with customers 119,176 1,620 120,796 Geographical markets Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 78,248 1,620 79,868 International 37,082 — 37,082 Regional (Hong Kong, Macau and Taiwan) 3,846 — 3,846 Total revenue from contracts with customers 119,176 1,620 120,796 Set out below is the reconciliation of the revenue from contracts with customers to the amounts disclosed in the segment information: For the year ended December 31, 2021 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Revenue from contracts with customers External customers 66,572 315 66,887 Intersegment sales — 1,006 1,006 Intersegment adjustment and eliminations — (1,006 ) (1,006 ) Total revenue from contracts with customers 66,572 315 66,887 For the year ended December 31, 2020 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Revenue from contracts with customers External customers 58,168 302 58,470 Intersegment sales — 1,499 1,499 Intersegment adjustment and eliminations — (1,499 ) (1,499 ) Total revenue from contracts with customers 58,168 302 58,470 For the year ended December 31, 2019 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Revenue from contracts with customers External customers 119,176 1,620 120,796 Intersegment sales — 2,052 2,052 Intersegment adjustment and eliminations — (2,052 ) (2,052 ) Total revenue from contracts with customers 119,176 1,620 120,796 The following table shows the amount of revenue recognised in the current reporting period that was included in the contract liabilities at the beginning of the reporting period: 2021 2020 RMB million RMB million Revenue recognised that was included in contract liabilities at the beginning of the year: Passenger transportation services 2,979 6,699 As at December 31, 2021, the contract liabilities for frequent flyer programme amounted to RMB1,492 million. The table below presents the activity of the contract liabilities for frequent flyer programme. 2021 2020 RMB million RMB million At January 1, 1,966 2,245 Deferred during the year 945 843 Recognised as revenue during the year (1,250 ) (1,122 ) At December 31, 1,661 1,966 Less: the related pending output value added tax therein (169 ) (185 ) 1,492 1,781 (b) Performance obligations Information about the Group’s performance obligations is summarised below: Passenger transportation services The performance obligation is satisfied upon transportation service provided. Payment in advance is required and reflected in sales in advance of carriage or frequent flyer programme, both of which are included in contract liabilities. Cargo and mail transportation services The performance obligation is satisfied as services are rendered and payment is generally due within 30 days after the end of each month. Ground services The performance obligation is satisfied as services are rendered and payment is generally due within 45 days from the date of billing. Ticket cancellation and commission services The performance obligation is satisfied as the process of ticket cancellation or sales is completed and consideration normally has been received before the services are rendered.

Other Operating Income and Gain

Other Operating Income and Gains	12 Months Ended
	Dec. 31, 2021
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Other operating income and gains	6 Other operating income and gains 2021 2020 2019 RMB million RMB million RMB million Co-operation 3,696 3,650 5,436 Routes subsidy income (note (b)) 383 372 353 Other subsidy income (note (c)) 803 1,326 535 Gain on disposal of items of property, plant and equipment and right-of-use 742 55 40 Gain on disposal of subsidiaries, associates and joint ventures 142 — 64 Compensation from ticket sales agents 63 53 331 Others 250 242 443 6,079 5,698 7,202 (a) Co-operation (b) Routes subsidy income represents subsidies granted by various authorities to support certain international and domestic routes operated by the Group. (c) Other subsidy income represents subsidies granted by various local authorities based on certain amounts of tax paid and other government grants. (d) There are no unfulfilled conditions or other contingencies related to subsidies that were recognised for the year ended December 31, 2021, 2020 and 2019.

Operating (Loss)_ Profit

Operating (Loss)/ Profit	12 Months Ended
	Dec. 31, 2021
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Operating (loss)/ profit	7 Operating (loss)/ profit Operating (loss)/ profit is stated after charging/(crediting) the following items: 2021 2020 2019 RMB million RMB million RMB million Amortisation of intangible assets (Note 19) 210 239 143 Depreciation of property, plant and equipment (Note 16) 9,490 9,067 9,078 Depreciation of right-of-use 12,389 12,367 12,298 Depreciation of investment properties (Note 17) 10 12 25 Amortisation of long-term deferred assets included in other non-current 619 570 536 Impairment charge on property, plant and equipment (Note 9) 1 31 4 Write-down of flight equipment spare parts to net realisable 21 153 — Consumption of flight equipment spare parts 1,218 1,135 1,013 Auditors’ remuneration 12 17 18

Wages, Salaries and Benefits

Wages, Salaries and Benefits	12 Months Ended
	Dec. 31, 2021
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Wages, salaries and benefits	8 Wages, salaries and benefits 2021 2020 2019 RMB million RMB million RMB million Wages, salaries, bonuses and allowances 15,776 16,412 19,385 Employee welfare and benefits 435 128 143 Pension (Note 39(a)) 2,412 2,149 2,571 Medical insurance (note (i)) 982 725 789 Staff housing fund (note (ii)) 1,265 1,195 1,056 Staff housing allowances (note (iii)) 186 214 186 Early retirement benefits (note (iv)) 5 4 22 21,061 20,827 24,152 Notes: (i) Medical insurance Majority of the Group’s PRC employees participate in the medical insurance schemes organised by municipal governments. (ii) Staff housing fund In accordance with the relevant PRC housing regulations, the Group is required to contribute to the state-sponsored housing fund for its employees. At the same time, the employees are required to contribute an amount equal to the Group’s contribution. The employees are entitled to claim the entire sum of the fund contributed under certain specified withdrawal circumstances. The Group has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits. (iii) Staff housing allowances The Group also provides staff housing allowances in cash to eligible employees. The total entitlement of an eligible employee is principally provided over a period of 20 years. Upon an eligible employee’s resignation or retirement, his or her entitlement would cease and any unpaid entitlement related to past service up to the date of resignation or retirement would be paid. (iv) Early retirement benefits The Group implements an early retirement scheme which allows eligible employees to early retire on a voluntary basis. The Group undertakes the obligations to pay the early retirement employees’ basic salaries and certain welfare in the future on a monthly basis according to the early retirement scheme, together with social insurance and housing fund pursuant to the regulation of the local government. The benefits of the early retirement scheme are calculated based on factors including the remaining number of years of service from the date of early retirement to the normal retirement date and the benefits the early retirement employees enjoyed. The present value of the future cash flows expected to be required to settle the obligations is recognised as a provision in “other long-term liabilities”. (v) Directors’ and executive’s remuneration Directors’ and executive’s remuneration for the year, disclosed pursuant to the Listing Rules, section 383(1)(a), (b), (c) and (f) of the Hong Kong Companies Ordinance and Part 2 of the Companies (Disclosure of Information about Benefits of Directors) Regulation, is as follows: 2021 2020 2019 RMB million RMB million RMB million Fees 620 460 805 Other emoluments: Salaries, allowances and benefits in kind 1,616 2,906 665 Performance related bonuses* — — — Pension scheme contributions 52 61 21 2,288 3,427 1,491 * No executive directors of the Company are entitled to bonus payments which are determined as percentage of the profit after tax of the Group. 2021 Fees Salaries, allowances and benefits in kind Performance related bonuses Pension scheme contributions Total RMB’000 RMB’000 RMB’000 RMB’000 RMB’000 Executive Directors Liu Shaoyong* — — — — — Li Yangmin* — — — — — Tang Bing* — — — — — Lin Wanli** — — — — — Jiang Jiang***** — — — — — Independent non-executive Cai Hongping 200 — — — 200 Dong Xuebo 80 — — — 80 Sun Zheng** 120 — — — 120 Lu Xiongwen** 120 — — — 120 Shao Ruiqing*** 100 — — — 100 Supervisors Guo Lijun** — 1,082 — 31 1,113 Fang Zhaoya* — — — — — Zhou Huaxin***** — 534 — 21 555 Total 620 1,616 — 52 2,288 (v) Directors’ and executive’s remuneration 2020 Fees Salaries, allowances and benefits in kind Performance related bonuses Pension scheme contributions Total RMB’000 RMB’000 RMB’000 RMB’000 RMB’000 Executive Directors Liu Shaoyong* — — — — — Wang Junjin*** — — — — — Li Yangmin* — — — — — Tang Bing* — — — — — Yuan Jun*&*** — — — — — Jiang Jiang***** — 2,325 — 36 2,361 Independent non-executive Lin Wanli*** — — — — — Shao Ruiqing 200 — — — 200 Cai Hongping 200 — — — 200 Dong Xuebo 60 — — — 60 Supervisors Xi Sheng* &*** — — — — — Gao Feng*** — 536 — 23 559 Zhou Huaxin***** — 45 — 2 47 Fang Zhaoya* — — — — — Total 460 2,906 — 61 3,427 (v) Directors’ and executive’s remuneration 2019 Fees Salaries, allowances and benefits in kind Performance related bonuses Pension scheme contributions Total RMB’000 RMB’000 RMB’000 RMB’000 RMB’000 Executive Directors Liu Shaoyong* — — — — — Ma Xulun* & — — — — — Wang Junjin** — — — — — Li Yangmin* & — — — — — Tang Bing* & — — — — — Yuan Jun* — — — — — Independent non-executive Lin Wanli — — — — — Li Ruoshan*** 200 — — — 200 Ma Weihua*** 200 — — — 200 Shao Ruiqing 200 — — — 200 Cai Hongping 200 — — — 200 Dong Xuebo** 5 — — — 5 Supervisors Xi Sheng* — — — — — Gao Feng — 665 — 21 686 Li Jinde*&*** — — — — — Fang Zhaoya* & — — — — — Total 805 665 — 21 1,491 * These directors and supervisors of the Company received emoluments from CEA Holding, the parent company, part of which were in respect of their services to the Company and its subsidiaries. No apportionment has been made as it is impracticable to apportion those amounts between their services to the Group and their services to CEA Holding. ** These directors and supervisors of the Company were newly appointed or elected during the years ended December 31, 2021,2020 and 2019, respectively. *** These directors and supervisors of the Company resigned during the years ended December 31, 2021, 2020 and 2019, respectively. **** Mr. Ma Xulun resigned on February 1, 2019. ***** Mr. Jiang Jiang was newly appointed as Employee Representative Director on December 28, 2020 and Mr. Zhou Huaxin was newly appointed as Supervisor on December 10, 2020. Their salaries, allowances and benefits in kind were listed as being Managers. During the years ended December 31, 2021, 2020 and 2019, no directors and supervisors waived their emoluments. (f) Five highest paid individuals Nil of the Company’s directors and supervisors was among the five highest paid individuals in the Group for the year ended December 31, 2021 (2020: One, 2019: Nil). The emoluments payable to the five highest paid individuals were as follows: 2021 2020 2019 RMB’000 RMB’000 RMB’000 Wages, salaries and allowances 8,537 10,495 11,413 Performance related bonuses* — — — Pension scheme contributions 185 172 185 8,722 10,667 11,598 * None of the above highest paid individuals are entitled to bonus payments which are determined as a percentage of the profit after tax of the Group. The number of five highest paid individuals whose emoluments fell within the following bands is as follows: 2021 2020 2019 HK$2,000,001 to HK$2,500,000 5 2 2 HK$2,500,001 to HK$3,000,000 — 3 2 HK$3,000,001 to HK$3,500,000 — — 1 During the year ended December 31, 2021, no emoluments were paid by the Group to the directors, supervisors and the five highest paid individuals as an inducement to join or upon joining the Group, or as a compensation for loss of office (2020: Nil, 2019: Nil).

Impairment Charges

Impairment Charges	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Impairment charges	9 Impairment charges 2021 2020 2019 RMB million RMB million RMB million Impairment charge on property, plant and equipment (Note 16) 1 31 4 Write-down of flight equipment spare parts to net realisable value (Note 28) 21 153 — 22 184 4

Impairment Losses on Financial

Impairment Losses on Financial Assets, Net	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Impairment losses on financial assets, net	10 Impairment losses on financial assets, net 2021 2020 2019 RMB million RMB million RMB million Impairment losses on trade receivable, net (Note 29) 3 15 (6 ) Impairment losses on other receivables (Note 31) 25 17 22 28 32 16

Finance Income

Finance Income	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Finance Income	11 Finance income 2021 2020 2019 RMB million RMB million RMB million Interest income 339 166 96 Foreign exchange gains, net (Note 12(b)) 1,619 2,494 — 1,958 2,660 96

Finance Costs

Finance Costs	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Finance Costs	12 Finance costs 2021 2020 2019 RMB million RMB million RMB million Interest on bank borrowings 1,946 1,112 1,149 Interest relating to lease liabilities 3,113 3,655 3,894 Interest relating to post-retirement benefit obligations 83 85 92 Interest relating to provision for lease return costs for aircraft and engines 278 283 270 Interest on bonds and debentures 842 632 520 Interest relating to interest rate swap contracts 17 4 (68 ) Less: amounts capitalized into advanced payments on acquisition of aircraft (note (a)) (467 ) (558 ) (687 ) 5,812 5,213 5,170 Foreign exchange losses, net (note (b)) — — 990 5,812 5,213 6,160 Notes (a) The weighted average interest rate used for interest capitalization is 3.57% per annum for the year ended December 31, 2021 (for the year ended December 31, 2020: 3.55%; for the year ended December 31, 2019: 3.51%). (b) The exchange gains and losses primarily related to the translation of the Group’s foreign currency denominated borrowings and lease liabilities for the year ended December 31, 2021, 2020 and 2019.

Income Tax

Income Tax	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Income tax	13 Income tax The amounts of income tax (credit)/expense charged to the consolidated income statements represent: 2021 2020 2019 RMB million RMB million RMB million Current income tax 143 222 942 Deferred income tax (4,372 ) (4,149 ) (123 ) (4,229) (3,927) 819 Pursuant to the “Notice on the continuation of the Income Tax Policies for Enhancing the Implementation of Western Region Development Strategy” (Ministry of Finance Announcement [2020] No.23), and other series of tax regulations, enterprises located in China western regions and engaged in the industrial activities as listed in the “Catalogue of Encouraged Industries in Western Regions”, will be entitled to a reduced corporate income tax rate of 15% from 2021 to 2030 upon approval from the tax authorities. CEA Yunnan, a subsidiary of the Company, obtained approval from the tax authorities and has been entitled to a reduced corporate income tax rate of 15% from January 1, 2011. The subsidiaries incorporated in Hong Kong are subject to Hong Kong profits tax rate of 16.5% (2020: 16.5%, 2019: 16.5%). The Company and its subsidiaries, except for CEA Yunnan and those incorporated in Hong Kong, are generally subject to the PRC standard corporate income tax rate of 25% (2020: 25%, 2019: 25%). A reconciliation of the tax (credit)/charge applicable to (loss)/profit before tax at the statutory rate for the country in which the Company and the majority of its subsidiaries are domiciled to the tax expense at the effective tax rate is as follows: 2021 2020 2019 RMB million RMB million RMB million (Loss)/profit before income tax (17,513 ) (16,488 ) 4,299 Tax calculated at the tax rate of 25% (2020: 25%, 2019: 25%) (4,378 ) (4,122 ) 1,075 Lower tax rates enacted by local authority 60 56 (139 ) Share of results of associates and joint ventures 35 24 (71 ) Income not subject to tax (84 ) (12 ) (36 ) Expenses not deductible for tax 159 169 128 Utilisation of previously unrecognised tax losses — (16 ) (11 ) Unrecognised tax losses for the year 69 21 17 Utilisation of previously unrecognised deductible temporary differences — (10 ) (8 ) Unrecognised deductible temporary differences — 3 3 Adjustments in respect of current tax of previous periods (1 ) (4 ) (34 ) Additional deduction of research and development costs (58 ) (31 ) (27 ) Income tax deduction of purchase of special equipment for production safety (31 ) (5 ) (78 ) Tax (credit)/charge (4,229 ) (3,927 ) 819 Effective tax rate 24.15 % 23.82 % 19.05 % The Group operates international flights to overseas destinations. There was no material overseas taxation for the years ended December 31, 2021, 2020 and 2019, as there are tax treaties between the PRC and the corresponding jurisdictions relating to the aviation business.

Dividends

Dividends	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Dividends	14 Dividend 2021 2020 2019 RMB million RMB million RMB million Proposed final – Nil (2020: Nil, 2019: 0.050) per ordinary share — — 819 On March 30, 2022, the Group has no profit distribution plan to propose cash dividend for 2021 (2020: Nil, 2019: RMB0.050 per share before tax).

Loss_Earnings Per Share

Loss/Earnings Per Share	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Loss/earnings Per Share	15 (Loss)/earnings per share The calculation of basic loss per share for the year ended December 31, 2021 was based on the loss attributable to equity holders of the Company of RMB12,214 million and the weighted average number of shares of 16,795,331,016 in issue during the year. The calculation of basic loss per share for the year ended December 31, 2020 was based on the loss attributable to equity holders of the Company of RMB11,836 million and the weighted average number of shares of 16,379,509,203 in issue during the year. The calculation of basic earnings per share for the year ended December 31, 2019 was based on the profit attributable to equity holders of the Company of RMB3,192 million and the weighted average number of shares of 15,104,893,522 in issue during the year. The Company had no potentially dilutive options or other financial instruments relating to the ordinary shares in issue during the years ended December 31, 2021, 2020 and 2019.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Property, Plant and Equipment	16 Property, plant and equipment Aircraft, engines and flight equipment Buildings Other property, plant and equipment Construction in progress Total RMB million RMB million RMB million RMB million RMB million December 31, 2021 At January 1, 2021 Cost 144,827 15,816 10,337 3,362 174,342 Accumulated depreciation and impairment (63,868 ) (3,102 ) (6,329 ) — (73,299 ) Net carrying amount 80,959 12,714 4,008 3,362 101,043 At January 1, 2021, net of accumulated depreciation and impairment 80,959 12,714 4,008 3,362 101,043 Additions 2,343 170 626 1,467 4,606 Disposals (3,094 ) (85 ) (63 ) — (3,242 ) Transfer from construction in progress — 745 279 (1,024 ) — Transfer from investment properties (Note 17) — 34 — — 34 Transfer from right-of-use 809 — — — 809 Transfer to other non-current — — — (517 ) (517 ) Impairment (1 ) — — — (1 ) Depreciation provided during the year (7,958 ) (536 ) (996 ) — (9,490 ) At December 31, 2021, net of accumulated depreciation and impairment 73,058 13,042 3,854 3,288 93,242 At December 31, 2021: Cost 136,247 16,562 10,986 3,288 167,083 Accumulated depreciation and impairment (63,189 ) (3,520 ) (7,132 ) — (73,841 ) Net carrying amount 73,058 13,042 3,854 3,288 93,242 As at December 31, 2021, the ownership certificates of buildings with a net carrying amount of RMB1,897 million (2020: RMB8,453 million) have not been obtained. The directors of the Company are of the opinion that the Group legally owns and has the rights to use the aforesaid buildings, and that there is no material adverse impact on the overall financial position of the Group. The Group’s parcels of land in Mainland China where the buildings are situated are held under medium-term leases. The following table indicates the cost and net carrying amount of the Group’s aircraft pledged as collateral under certain borrowing arrangements (Note 37): 2021 2020 Cost RMB million Net carrying Amount RMB million Cost RMB million Net carrying Amount RMB million Aircraft — pledged as collateral 31,958 23,129 26,149 17,515 Aircraft, engines and flight equipment Buildings Other property, plant and equipment Construction in progress Total December 31, 2020 At January 1, 2020 Cost 133,845 14,153 10,217 3,857 162,072 Accumulated depreciation and impairment (54,366 ) (2,499 ) (5,770 ) — (62,635 ) Net carrying amount 79,479 11,654 4,447 3,857 99,437 At January 1, 2020, net of accumulated depreciation and impairment 79,479 11,654 4,447 3,857 99,437 Additions 3,517 69 528 1,055 5,169 Disposals (781 ) (22 ) (102 ) (425 ) (1,330 ) Transfer from construction in progress — 1,102 21 (1,123 ) — Transfer from advanced payments on acquisition of aircraft 53 — — — 53 Transfer from investment properties (Note 17) — 425 — — 425 Transfer from right-of-use 6,402 — — — 6,402 Transfer to investment properties (Note 17) — (13 ) — — (13 ) Transfer to other non-current — — — (2 ) (2 ) Depreciation provided during the year (7,680 ) (501 ) (886 ) — (9,067 ) Impairment (note) (31 ) — — — (31 ) At December 31, 2020, net of accumulated depreciation and impairment 80,959 12,714 4,008 3,362 101,043 At December 31, 2020: Cost 144,827 15,816 10,337 3,362 174,342 Accumulated depreciation and impairment (63,868 ) (3,102 ) (6,329 ) — (73,299 ) Net carrying amount 80,959 12,714 4,008 3,362 101,043 Note: During the year ended December 31, 2020, the Group made an impairment provision of RMB31 million for certain retired engines, the recoverable amount is determined based on the estimated market prices.

Investment Properties

Investment Properties	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Investment Properties	17 Investment properties 2021 2020 RMB million RMB million Cost At January 1 263 883 Transfer from property, plant and equipment (Note 16) — 25 Transfer from right-of-use — 11 Transfer to property, plant and equipment (Note 16) (62 ) (565 ) Transfer to right-of-use (9 ) (91 ) At December 31, 192 263 Accumulated depreciation At January 1 97 230 Transfer from property, plant and equipment (Note 16) — 12 Transfer from right-of-use — 3 Transfer to property, plant and equipment (Note 16) (28 ) (140 ) Transfer to right-of-use (5 ) (20 ) Charge for the year (Note 7) 10 12 At December 31, 74 97 Net book amount At December 31, 118 166 As at December 31, 2021, the fair value of the investment properties was approximately RMB324 million (2020: RMB445 million) according to a valuation performed by an independent professionally qualified valuer. The investment properties are leased to third parties and related parties under operating leases. Rental income of RMB178 million (2020: RMB139 million, 2019: RMB100 million) was received by the Group during the year in respect of the leases. As at December 31, 2021, the Group had no pledged investment properties (2020: Nil). Fair value hierarchy The following table illustrates the fair value measurement hierarchy of the Group’s investment properties: Fair value measurement using Buildings Quoted prices in active markets (Level 1) Significant observable inputs (Level 2) Significant unobservable inputs (Level 3) Total Not measured at fair value but fair value is disclosed: As at December 31, 2021 — 80 244 324 As at December 31, 2020 — 119 326 445 During the year, there were no transfers of fair value measurements between Level 1 and Level 2 and no transfers into or out of Level 3 (2020: Nil). The fair values of the buildings with comparable market prices have been estimated using significant observable inputs and calculated by adjusted market prices considering the condition and location of the buildings. The fair values of the buildings without comparable market prices have been estimated by a discounted cash flow valuation model using significant unobservable inputs such as the estimated rental value, rent growth, long term vacancy rate and discount rate.

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Presentation of leases for lessee [abstract]
Leases	18 Leases The Group as a lessee The Group has lease contracts for various items of aircraft, engines, buildings and others used in its operations. Lump sum payments were made upfront to acquire the leased land with lease periods of 40 to 50 years, and no ongoing payments will be made under the terms of these land leases. As at December 31, 2021, the Group had 491 aircraft (2020: 440 aircraft) under leases, which generally have lease terms between 5 and 20 years. Leases of engines generally have lease terms between 5 and 10 years, while buildings generally have lease terms between 2 and 10 years. Others, including motor vehicles, generally have lease term between 2 to 5 years. The Group also has lease contracts for buildings and equipment with lease terms of 12 months or less or is individually of low value. Generally, the Group is restricted from assigning and subleasing the leased assets outside the Group. (a) Right-of-use The carrying amounts of the Group’s right-of-use Aircraft, and engines Prepayments for land use rights Buildings Others Total At January 1, 2020, net of accumulated depreciation 126,464 1,343 824 73 128,704 Additions 7,109 — 1,145 135 8,389 Transfer from investment properties (Note 17) — 71 — — 71 Transfer to property, plant and equipment (Note 16) (6,402 ) — — — (6,402 ) Transfer to investment properties (Note 17) — (8 ) — — (8 ) Disposals (171 ) — (6 ) — (177 ) Depreciation provided during the year (11,322 ) (38 ) (948 ) (59 ) (12,367 ) At December 31, 2020 and January 1, 2021,net of accumulated depreciation 115,678 1,368 1,015 149 118,210 Additions 19,206 1,112 1,350 295 21,963 Transfer from investment properties (Note 17) — 4 — — 4 Transfer to property, plant and equipment (Note 16) (809 ) — — — (809 ) Disposals (58 ) (13 ) (24 ) (9 ) (104 ) Depreciation provided during the year (11,206 ) (259 ) (834 ) (90 ) (12,389 ) At December 31, 2021 122,811 2,212 1,507 345 126,875 (b) Lease liabilities The carrying amount of lease liabilities and the movements during the year are as follows: 2021 2020 RMB million RMB million Carrying amount at January 1 96,251 110,275 New leases 18,202 7,191 Other addition 486 — Effect of foreign exchange (738 ) (2,768 ) COVID-19-related — (3 ) Accretion of interest recognised during the year 3,113 3,655 Payments (18,838 ) (22,099 ) Carrying amount at December 31, 98,476 96,251 Analysed into: Current portion 16,350 14,073 Non-current 82,126 82,178 The maturity analysis of lease liabilities is disclosed in Note 48 to the consolidated financial statements. (c) The amounts recognised in profit or loss in relation to leases are as follows: 2021 2020 RMB million RMB million Interest on lease liabilities (Note 12) 3,113 3,655 Depreciation charge of right-of-use 12,389 12,367 COVID-19-related — (3 ) Low value and short-term lease rental 383 358 Total amount recognised in profit or loss 15,885 16,377 (d) The Group has no significant lease contracts that include extension and termination options or contain variable payments. (e) The total cash outflow for leases and future cash outflows relating to leases that have not yet commenced are disclosed in Notes 43(d) and 44, respectively, to the consolidated financial statements. The Group as a lessor The Group leases its certain investment properties and buildings in the PRC under operating lease arrangements, with leases negotiated for terms ranging from one to thirteen years. The terms of the leases generally require the tenants to pay security deposits and provide for periodic rent adjustments according to the then prevailing market conditions. Rental income recognised by the Group during the year was RMB240 million (2020: RMB257 million; 2019: RMB190 million), details of which are included in Note 5 to the consolidated financial statements. At December 31, 2021, the undiscounted lease payments receivable by the Group in future periods under non-cancellable 2021 2020 RMB million RMB million Within one year 135 150 After one year but within two years 74 141 After two years but within three years 69 135 After three years but within four years 57 134 After four years but within five years 53 114 After five years 254 197 642 871

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Intangible Assets	19 Intangible assets Goodwill (Note (a)) Others Total RMB million RMB million RMB million Cost at January 1, 2021, net of accumulated amortization 11,270 448 11,718 Additions — 191 191 Transfer from construction in process — 14 14 Amortization provided during the year — (210 ) (210 ) At December 31, 2021 11,270 443 11,713 At December 31, 2021: Cost 11,270 1,765 12,937 Accumulated amortisation — (1,322 ) (1,224 ) Net carrying amount 11,270 443 11,713 Goodwill Others Total RMB million RMB million RMB million Cost at January 1, 2020, net of accumulated amortization 11,270 428 11,698 Additions — 263 263 Transfer from construction in process — 1 1 Disposal — (5 ) (5 ) Amortization provided during the year — (239 ) (239 ) At December 31, 2020 11,270 448 11,718 At December 31, 2020: Cost 11,270 1,462 12,732 Accumulated amortisation — (1,014 ) (1,014 ) Net carrying amount 11,270 448 11,718 Note: (a) The balance represents goodwill arising from the acquisition of Shanghai Airlines. The value of the goodwill is attributable to strengthening the competitiveness of the Group’s airline transportation operations, attaining synergy through integration of the resources and accelerating the development of international air transportation in Shanghai. For the purpose of impairment assessment, goodwill was allocated to the cash-generating unit (“CGU”) of airline transportation operations that the Group operates and benefits from the acquisition. The recoverable amount of the CGU has been determined based on a value-in-use pre-tax pre-tax value-in-use In 2020, the discount rate after tax applied to the post-tax cash flow projections is 9.5%. The growth rate used to extrapolate the cash flows of the above cash-generating unit beyond the fiveyear period is 2.60%, which does not exceed the long-term average growth rate for the business in which the CGU operates. No impairment for the goodwill was required based on the value-in-use calculation as at the reporting date in 2020.

Advanced Payments on Acquisitio

Advanced Payments on Acquisition of Aircraft	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Advanced Payments on Acquisition of Aircraft	20 Advanced payments on acquisition of aircraft December 31, December 31, RMB million RMB million Advanced payments on acquisition of aircraft 12,165 17,240 Included in the Group’s balance as at December 31, 2021, the amounts of accumulated interest capitalised are approximately RMB1,213 million During the year, the Group changed the introduction pattern of some aircraft and received RMB8,092 million from novation of purchase rights.

Subsidiaries

Subsidiaries	12 Months Ended
	Dec. 31, 2021
Disclosure of subsidiaries [abstract]
Subsidiaries	21 Subsidiaries The Group’s principal subsidiaries at December 31, 2021 and 2020 are set out below. Unless otherwise stated, they have share capital consisting solely of ordinary shares that are held directly by the Group, and the proportion of ownership interests held equals the voting rights held by the Group. The place of incorporation or registration is also their principal place of business.​​​​​​​ Company name Place and date of incorporation/ registration and kind of legal entity Principle activities Issued ordinary/ registered share capital Ownership interest held by the group Ownership non-controlling million 2021 2020 2021 2020 China Eastern Airlines Jiangsu Co., Ltd. (“CEA Jiangsu”) PRC/Mainland China, liability company Provision of airline RMB2,000 62.56 % 62.56 % 37.44 % 37.44 % China Eastern Airlines Wuhan Co., Ltd. (“CEA Wuhan”) PRC/Mainland China, Provision of airline RMB1,750 60 % 60 % 40 % 40 % Shanghai Eastern Flight Training Co., Ltd. (“Shanghai Flight Training”) PRC/Mainland China, Provision of flight RMB694 100 % 100 % — — Shanghai Airlines Co., Ltd. (“Shanghai Airlines”) PRC/Mainland China, Provision of airline RMB500 100 % 100 % — — China Eastern Airlines Technology Co., Ltd. (“Eastern Technology”) PRC/Mainland China, limited liability Provision of airline RMB4,300 100 % 100 % — — One two three Airlines Co., Ltd. (“OTT Airlines”) (Originally named Eastern Business Airlines Co., Ltd.) PRC /Mainland China, limited liability Provision of RMB1,500 100 % 100 % — — China Eastern Airlines Yunnan Co., Ltd. (“CEA Yunnan”) (Note(b)) PRC /Mainland China, July 27, 2010, limited liability Provision of airline RMB3,662 65 % 90.36 % 35 % 9.64 % Eastern Air Overseas (Hong Kong) Co., Ltd. (“Eastern Air Overseas”) Hong Kong , June 10, 2011, limited liability Provision of import HKD280 100 % 100 % — — China United Airlines Co., Ltd. (“China United Airlines”) PRC /Mainland China, Provision of airline RMB1,320 100 % 100 % — — China Eastern Airlines Application Development Center Co., Ltd. (“Application Development Center”) PRC /Mainland China, November 21, 2011 , limited liability Provision of RMB498 100 % 100 % — — China Eastern Airlines E-Commerce E-Commerce”) PRC /Mainland China, December 1, 2014, limited liability E-commerce RMB100 100 % 100 % — — (a) Non-controlling Details of the Group’s subsidiaries that have material non-controlling December 31, 2021 December 31,2020 Percentage of equity interest held by non-controlling CEA Jiangsu 37.44 % 37.44 % CEA Yunnan (Note (b)) 35.00 % 9.64 % CEA Wuhan 40.00 % 40.00 % December 31, 2021 December 31,2020 RMB million RMB million Loss for the year allocated to non-controlling CEA Jiangsu (612 ) (435 ) CEA Yunnan (348 ) (73 ) CEA Wuhan (127 ) (207 ) Accumulated balances of non-controlling at the reporting date: CEA Jiangsu 395 1,010 CEA Yunnan 2,000 631 CEA Wuhan 1,160 1,299 The following tables illustrate the summarised financial information of the above subsidiaries. The amounts disclosed are before any inter-company eliminations: December 31, 2021 CEA Jiangsu CEA Yunnan CEA Wuhan RMB million RMB million RMB million Revenue 5,157 6,595 2,813 Total expenses (6,792 ) (7,616 ) (3,131 ) Loss for the year (1,635 ) (1,021 ) (318 ) Total comprehensive income for the year (1,642 ) (1,021 ) (341 ) Current assets 384 467 158 Non-current 14,006 17,164 6,938 Current liabilities 6,146 5,622 2,091 Non-current 7,189 5,461 2,098 Net cash flows from operating activities 1,155 1,585 637 Net cash flows generated from /(used in) investing activities 591 (309 ) (156 ) Net cash flows used in financing activities (1,754 ) (1,275 ) (481 ) Effect of foreign exchange rate changes, net — — — Net decrease in cash and cash equivalents (8 ) 1 — The following tables illustrate the summarised financial information of the above subsidiaries. The amounts disclosed are before any inter-company eliminations: (continued) December 31, 2020 CEA Jiangsu CEA Yunnan CEA Wuhan RMB million RMB million RMB million Revenue 4,550 6,048 1,650 Total expenses (5,713 ) (6,809 ) (2,167 ) Loss for the year (1,163 ) (761 ) (517 ) Total comprehensive loss for the year (1,164 ) (761 ) (532 ) Current assets 477 290 97 Non-current 12,724 17,999 7,590 Current liabilities (4,109 ) (5,219 ) (1,998 ) Non-current (6,395 ) (6,528 ) (2,441 ) Net cash flows from operating activities 1,833 3,232 642 Net cash flows used in investing activities (331 ) (534 ) (99 ) Net cash flows used in financing activities (1,556 ) (2,698 ) (543 ) Effect of foreign exchange rate changes, net — — — Net decrease in cash and cash equivalents (55 ) — — (b) Transaction with non-controlling 2021 RMB million Carrying amount of non-controlling 1,717 Consideration paid by non-controlling 1,028 Deficit of consideration received recognised in the transactions with non-controlling 689 There were no transactions with non-controlling CEA Yunnan was jointly invested by the Company and Yunnan Provincial People’s Government (“SASAC”) in 2010. According to the joint venture agreement and the articles of association, SASAC shall contribute 35% of the registered capital in cash and land use right of Kunming Airport. Before 2021, although SASAC was not able to transfer the land use right to CEA Yunnan for lacking administration approval, CEA Yunnan has operated on the land since 2010. From January to February 2021, SASAC settled capital contributions to the subsidiary of the Company CEA Yunnan of which 283 million in cash and 744 million in the fair value of the land use right based on valuation results. Upon completion of the capital contributions, the Company and SASAC owns 65% and 35% respectively for profit/loss sharing and shareholders voting rights of CEA Yunnan. According to the supplementary shareholder agreement between the Company and SASAC signed on January 2021, from the incorporation date of CEA Yunan to the completion of capital contribution by SASAC on January 31, 2021, the undistributed profit of CEA Yunnan shall be allocated based on the proportion of 72.74% to the Company and 27.26% to SASAC. This is treated as the transaction with non-controlling

Investment in Associate

Investment in Associate	12 Months Ended
	Dec. 31, 2021
Investments accounted for using equity method [abstract]
Investment in Associate	22 Investment in associate 2021 2020 RMB million RMB million Share of net assets 1,777 1,793 The movements in investments in associates were as follows: 2021 2020 RMB million RMB million At January 1 1,793 1,977 Additions 140 — Share of results of associates (97 ) (82 ) Share of revaluation on equity investments designated at fair value through other comprehensive income held by an associate (7 ) 2 Dividend declared during the year (21 ) (104 ) Disposal of associates (31 ) — At December 31 1,777 1,793 Particulars of the principal associates, which are limited liability companies, are as follows: Place of Registered capital Attributable equity Principal activities Company name 2021 Million 2020 Million 2021 2020 Eastern Air Group Finance Co., Ltd. (“Eastern Air Finance Company”) PRC/Mainland China December 6, 1995 RMB2,000 RMB2,000 25% 25% Provision of financial services to group companies of CEA Holding China Eastern Air Catering Investment Co., Ltd. PRC/Mainland China November 17, 2003 RMB350 RMB350 45% 45% Provision of air catering services Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. (“Shanghai P&W”) (note) PRC/Mainland China March 28, 2008 USD40 USD40 51% 51% Provision of aircraft, New Shanghai International Tower Co., Ltd. PRC/Mainland China November 17, 1992 RMB167 RMB167 20% 20% Property development provision and management services Eastern Aviation Import & Export Co., Ltd. (“Eastern Import & Export”) PRC/Mainland China June 9, 1993 RMB80 RMB80 45% 45% Provision of aviation Eastern Aviation Advertising Service Co., Ltd. (“Eastern Advertising” PRC/Mainland China March 4, 1986 RMB200 RMB200 45% 45% Provision of aviation Shanghai Collins Aviation Maintenance Service Co., Ltd. (“Collins Aviation”) PRC/Mainland China September 27, 2002 USD7 USD7 35% 35% Provision of airline Shanghai Airlines Tours International (Group) Co., Ltd. (“Shanghai Airlines Tours”) PRC/Mainland China August 29, 1992 RMB143 RMB143 35% 35% Tour operations, travel Note: In 2008, the Company entered into an agreement with United Technologies International Corporation (“Technologies International”) to establish Shanghai P&W, in which the Company holds a 51% interest. According to the shareholder’s agreement, Technologies International has the power to govern the financial and operating policies and in this respect the Company accounts for Shanghai P&W as an associate. The following table illustrates the aggregate financial information of the Group’s associates that were not individually material: 2021 2020 RMB million RMB million Share of the associates’ loss for the year (97 ) (82 ) Share of the associates’ other comprehensive income (7 ) 2 Share of the associates’ total comprehensive income (104 ) (80 ) Aggregate carrying amount of the Group’s interests in the associates 1,777 1,793

Investments in Joint Ventures

Investments in Joint Ventures	12 Months Ended
	Dec. 31, 2021
Investments accounted for using equity method [abstract]
Investments in Joint Ventures	23 Investments in joint ventures 2021 2020 RMB million RMB million Share of net assets 484 594 The movements in investments in joint ventures were as follows: 2021 2020 RMB million RMB million At January 1 594 627 Share of results (44 ) (13 ) Dividend declared during the year (12 ) (20 ) Disposal of joint ventures (54 ) — At December 31 484 594 Particulars of the principal joint ventures, which are limited liability companies, are as follows: Company name Place of establishment Registered capital Attributable equity Principal activities 2021 Million 2020 Million 2021 2020 Shanghai Technologies Aerospace Co., Ltd. (“Technologies Aerospace”) (note) PRC/Mainland China September 28, 2004 USD73 USD73 51% 51% Provision of repair and maintenance services Shanghai Eastern Union Aviation Wheels & Brakes Maintenance Services Overhaul Engineering Co., Ltd. (“Wheels & Brakes”) PRC/Mainland China December 28, 1995 USD2 USD2 — 40% Provision of spare parts Eastern China Kaiya System Integration Co., Ltd. (“China Kaiya”) PRC/Mainland China May 21, 1999 RMB10 RMB10 41% 41% Provision of computer CAE Melbourne Flight Training Pty Ltd. (“CAE Melbourne”) Australia AUD11 AUD11 50% 50% Provision of flight training services Shanghai Hute Aviation Technology Co., Ltd. (“Shanghai Hute”) PRC/Mainland China April 9, 2003 RMB30 RMB30 — 50% Provision of equipment Maintenance services Xi’an CEA SAFRAN Landing Systems Services Co., Ltd. (“XIESA”) PRC/Mainland China July 12, 2017 USD40 USD40 50% 50% Provision of aircraft, engine Note: Under a joint venture agreement with a joint venture partner of Technologies Aerospace dated March 10, The following table illustrates the aggregate financial information of the Group’s joint ventures that were not individually material: 2021 2020 RMB million RMB million Share of the joint ventures’ (loss)/profit and total comprehensive income for the year (44 ) (13 ) Aggregate carrying amount of the Group’s interests in the joint ventures 484 594

Equity Investments Designated a

Equity Investments Designated at Fair Value Through Other Comprehensive Income	12 Months Ended
	Dec. 31, 2021
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Equity Investments Designated at Fair Value Through Other Comprehensive Income	24 Equity investments designated at fair value through other comprehensive income December 31, 2021 December 31, 2020 RMB million RMB million Listed equity investment, at fair value TravelSky Technology Limited 237 457 Unlisted equity investments, at fair value Aviation Data Communication Corporation Limited 137 182 Sichuan Airlines Corporation Limited 34 194 Others 49 162 220 538 457 995 The above equity investments were irrevocably designated at fair value through other comprehensive income as the Group considers these investments to be strategic in nature. Amounts recognised in profit or loss and other comprehensive income: 2021 2020 RMB million RMB million Losses recognised in other comprehensive income, net of tax 247 209 Dividends from equity investments held at FVOCI recognised in profit or loss in other income 3 12

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2021
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Derivative Financial Instruments	25 Derivative financial instruments Assets Liability 2021 RMB million 2020 RMB million 2021 RMB million 2020 RMB million Fuel forward contracts — 399 — 1 Interest rate swaps — — 46 140 Total — 399 46 141 Less: current portion — Fuel forward contracts — 362 — 1 — Interest rate swaps — — 1 2 Current portion — 362 1 3 Non-current — 37 45 138 Cash flow hedge — Fuel price risk The Group entered into fuel forward contracts to mitigate its jet fuel price risk. The fuel forward contracts had been designated as cash flow hedge of the Group’s highly probable forecast fuel purchase transactions. As at December 31, 2021, there were no outstanding fuel forward contracts (December 31, 2020: outstanding notional principal amounted to USD252 million). Cash flow hedge — Interest rate risk The Group entered into interest rate swap contracts to mitigate its interest rate risk. The interest rate swap contracts had been designated as cash flow hedge against the variability in market interest rates of lease liabilities. As at December 31, 2021, the notional principal of the outstanding interest rate swap contracts amounted to USD495 million (December 31, 2020: USD690 million). These contracts would expire between 2022 and 2025.

Other Non-current Assets

Other Non-current Assets	12 Months Ended
	Dec. 31, 2021
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Other Non-current Assets	26 Other non-current December 31, December 31, RMB million RMB million Deposits relating to aircraft held under leases 140 143 Deferred pilot recruitment costs 2,088 2,100 Rebate receivables on aircraft acquisitions 1,134 1,264 Prepayment for acquisition of property, plant and equipment 286 1,055 Others 821 783 4,469 5,345

Deferred Tax Assets and Liabili

Deferred Tax Assets and Liabilities	12 Months Ended
	Dec. 31, 2021
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Deferred Tax Assets and Liabilities	27 Deferred tax assets and liabilities Deferred tax assets and liabilities are offset when there is a legally enforceable right of offsetting and when the deferred income taxes relate to the same authority. The following amounts, determined after appropriate offsetting, are shown in the consolidated statement of financial position: December 31, 2021 December 31, 2020 RMB million RMB million Deferred tax assets: 9,580 5,011 Deferred tax liabilities — (13 ) Net deferred income tax assets 9,580 4,998 Movements in the net deferred tax assets were as follows: December 31, December 31, RMB million RMB million At January 1 4,998 831 Credited to profit or loss (Note 13) 4,372 4,149 Charged to other comprehensive income 210 18 At December 31 9,580 4,998 The deferred tax assets and liabilities (prior to the offsetting of balances within the same tax jurisdiction) were made up of the taxation effects of the following: December 31, 2021 December 31, 2020 RMB million RMB million Deferred tax assets: Provision for lease return costs for aircraft and engines 1,190 1,109 Lease liabilities/right-of-use — 94 Impairment provision for flight equipment spare parts 65 61 Impairment provision for receivables 84 80 Impairment provision for property, plant and equipment 61 115 Derivative financial instruments 12 36 Financial asset at fair value through profit or loss 10 7 Other payables and accruals 65 70 Government grants related to assets 22 29 Loss available for offsetting against future taxable profits 8,323 3,699 Safety equipment tax credit 41 10 Aged payables — 1 9,873 5,311 Deferred tax liabilities: Lease liabilities/right-of-use (214) — Equity investments designated at fair value through other comprehensive income (79) (213) Derivative financial instruments — (100) (293) (313) 9,580 4,998 Movements in the net deferred tax assets/(liabilities) of the Group for the year were as follows: At January (Charged) / (Charged) / At 31, 2021 RMB million RMB million RMB million RMB million For the year ended December 31, 2021 Provision for lease return costs for aircraft and engines 1,109 81 — 1,190 Lease liabilities/right-of-use 94 (94 ) — — Impairment provision for flight equipment spare parts 61 4 — 65 Impairment provision for receivables 80 4 — 84 Impairment provision for property, plant and equipment 115 (54 ) — 61 Derivative financial instruments 36 — (24 ) 12 Financial asset at fair value through profit or loss 7 3 — 10 Other payables and accruals 70 (5 ) — 65 Government grants related to assets 29 (7 ) — 22 Loss available for offsetting against future taxable profits 3,699 4,624 — 8,323 Safety equipment tax credit 10 31 — 41 Aged payables 1 (1 ) — — 5,311 4,586 (24) 9,873 Lease liabilities/right-of-use — (214 ) — (214 ) Equity investments designated at fair value through other comprehensive income (213 ) — 134 (79 ) Derivative financial instruments (100 ) — 100 — (313) (214) 234 (293) Net deferred tax assets 4,998 4,372 210 9,580 Movements in the net deferred tax assets/(liabilities) of the Group for the year were as follows: At January 0 (Charged) / (Charged) / At 31, 2020 RMB million RMB million RMB million RMB million For the year ended December 31, 2020 Provision for lease return costs for aircraft and engines 1,075 34 — 1,109 Lease liabilities/Right-of-use — 94 — 94 Impairment provision for flight equipment spare parts 53 8 — 61 Impairment provision for receivables 76 4 — 80 Impairment provision for property, plant and equipment 101 14 — 115 Derivative financial instruments 6 — 30 36 Financial asset at fair value through profit or loss — 7 — 7 Other payables and accruals 71 (1 ) — 70 Government grants related to assets 35 (6 ) — 29 Loss available for offsetting against future taxable profits 66 3,633 — 3,699 Safety equipment tax credit — 10 — 10 Aged payables 1 — — 1 1,484 3,797 30 5,311 Lease liabilities/Right-of-use (352 ) 352 — — Equity investments designated at fair value through other comprehensive income (283 ) — 70 (213 ) Derivative financial instruments (18 ) — (82 ) (100 ) (653) 352 (12) (313) Net deferred tax assets 831 4,149 18 4,998 (a) The temporary differences associated with investments in subsidiaries, associates and interests in joint arrangements, for which deferred tax has not been recognised in the periods presented, totalled RMB3,042 million (2020: RMB7,087 million). As at the reporting date, the Group had the following balances in respect of which deferred tax assets have not been recognised: 2021 2020 Deferred Temporary Deferred Temporary RMB million RMB million RMB million RMB million Tax losses carried forward 95 380 34 135 Other deductible temporary differences 8 33 8 35 Total unrecognised deferred tax assets 103 413 42 170 In accordance with the PRC tax law and relevant regulations, tax losses for the year 2020 can be carried forward for a period of eight years and other years’ tax losses can be carried forward for a period of five years to offset against future taxable income. The Group’s tax losses carried forward will expire between 2022 and 2028 As at December 31, 2021, management carried out an assessment to determine whether future taxable profits will be available to utilise the tax losses and deductible temporary differences. The Group has recognised deferred tax assets of RMB8,323 million (2020: RMB3,699 million) for tax losses of RMB34,065 million (2020: RMB15,175 million) and RMB1,550 million (2020: RMB1,612 million) for deductible temporary differences. For certain subsidiaries, as there are still uncertainties around the future operating results, such as market competition, management assessed that there are significant uncertainties that future taxable profits will be available for these subsidiaries and accordingly no deferred tax assets were recognised.

Flight Equipment Spare Parts

Flight Equipment Spare Parts	12 Months Ended
	Dec. 31, 2021
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Flight Equipment Spare Parts	28 Flight equipment spare parts December 31, 2021 December 31, 2020 RMB million RMB million Flight equipment spare parts 2,059 2,299 Less: provision for spare parts (260 ) (245 ) 1,799 2,054 Movements in the Group’s provision for impairment of flight equipment spare parts were as follows: December 31, 2021 December 31, 2020 RMB million RMB million At January 1 245 325 Accrual 21 153 Amount written off in relation to disposal of spare parts (6 ) (233 ) At December 31 260 245

Trade Receivables

Trade Receivables	12 Months Ended
	Dec. 31, 2021
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Trade Receivables	29 Trade receivables The credit terms given to trade customers are determined on an individual basis. December 31, 2021 December 31, 2020 RMB million RMB million Trade receivables 1,051 1,210 Less: impairment (77 ) (86 ) 974 1,124 An ageing analysis of the trade receivables as at the end of the reporting period, based on the invoice/billing date and net of loss allowance, is as follows: December 31, 2021 December 31, 2020 RMB million RMB million Within 90 days 919 1,054 91 to 180 days 39 46 181 to 365 days 9 8 Over 365 days 7 16 974 1,124 Balances with related parties included in trade receivables are summarised in Note 45(c)(i). The movements in the loss allowance for impairment of trade receivables are as follows: December 31, 2021 December 31, 2020 RMB million RMB million At January 1 86 76 Impairment losses, net (Note 10) 3 15 Amount written off as uncollectible (12 ) (5 ) At December 31 77 86 The Group applies IFRS 9 simplified approach to measuring the expected credit losses which uses a lifetime expected loss allowance for all trade receivables. The provision rates are based on days past due for groupings of various customer segments with similar loss patterns. The calculation reflects the probability-weighted outcome, the time value of money and reasonable and supportable information that is available at the reporting date about past events, current conditions and forecasts of future economic conditions. Set out below is the information about the credit risk exposure on the Group’s trade receivables using a provision matrix: As at December 31, 2021 Past due Less than 90 to 365 Over Current 90 days days 365 days Total Expected credit loss rate (%) 0.70 3.67 5.36 90.79 7.37 Gross carrying amount (RMB million) 925 40 10 76 1,051 Expected credit losses (RMB million) 6 1 1 69 77 As at December 31, 2020 Past due Less than 90 to 365 Over Current 90 days days 365 days Total Expected credit loss rate (%) 0.85 4.79 6.87 76.93 7.08 Gross carrying amount (RMB million) 1,063 42 9 96 1,210 Expected credit losses (RMB million) 9 1 1 75 86 Trade receivables that were neither past due nor impaired relate to a large number of independent sales agents for whom there was no recent history of default. The net impacts of recognition and reversal of provisions for impaired receivables have been included in “Impairment losses on financial assets, net” in profit or loss (Note 10). Amounts charged to the allowance account are generally written off when there is no expectation of recovering.

Financial Assets at Fair Value

Financial Assets at Fair Value Through Profit or Loss	12 Months Ended
	Dec. 31, 2021
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Financial Assets at Fair Value Through Profit or Loss	30 Financial asset at fair value through profit or loss 2021 2020 RMB million RMB million Listed equity investment, at fair value: Shanghai Pudong Development Bank Co., Ltd. 84 95 The above equity investment was classified as a financial asset at fair value through profit or loss as it was held for trading. 2021 2020 RMB million RMB million Fair value losses on equity investments at FVPL recognised in other losses (11 ) (26 )

Prepayments and Other Receivabl

Prepayments and Other Receivables	12 Months Ended
	Dec. 31, 2021
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Prepayments and Other Receivables	31 Prepayments and other receivables 2021 2020 RMB million RMB million Value added tax recoverable 9,025 7,997 Value added tax refundable 323 174 Subsidy receivable 1,493 1,421 Prepaid corporate income tax 85 347 Advance to suppliers 158 121 Rebate receivables on aircraft acquisitions 299 90 Amounts due from related parties (Note 45(c)(i)) 382 769 Deposits relating to aircraft held under leases — 7 Other deposits 237 161 Others 381 380 12,383 11,467 Provision for impairment of other receivables (294 ) (269 ) 12,089 11,198 Set out below are the movements of loss allowances measured at 12-month 12-month ECLs Lifetime ECLs Stage 1 Stage Stage Total As at January 1, 2021 36 122 111 269 Transferred — to stage 3 — (71 ) 71 — Transferred — to stage 2 (8 ) 8 — — Accrual 1 9 15 25 As at December 31, 2021 29 68 197 294 12-month ECLs Lifetime ECLs Stage 1 Stage 2 Stage 3 Total As at January 1, 2020 33 108 122 263 Transferred — to stage 2 (2 ) 2 — — Accrual 5 12 — 17 Write-off — — (11 ) (11 ) As at December 31, 2020 36 122 111 269

Cash and cash equivalents and r

Cash and cash equivalents and restricted cash	12 Months Ended
	Dec. 31, 2021
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Cash and cash equivalents and restricted cash	32 Cash and cash equivalents and restricted cash December 31, 2021 December 31, 2020 RMB million RMB million Cash at bank and on hand 12,962 7,663 Less: restricted cash (a) (12 ) (12 ) Cash and cash equivalents(b) 12,950 7,651 (a) Details of restricted cash are as follows: December 31, 2021 December 31, 2020 RMB million RMB million Restricted bank deposits 12 12 (b) At the end of the reporting period, the cash and bank balances of the Group denominated in RMB amounted to RMB12,788 million (2020: RMB6,658 million). The RMB is not freely convertible into other currencies. However, under Mainland China’s Foreign Exchange Control Regulations and Administration of Settlement, Sale and Payment of Foreign Exchange Regulations, the Group is permitted to exchange RMB for other currencies through banks authorised to conduct foreign exchange business. Cash at banks earns interest at floating rates based on daily bank deposit rates. The bank balances are deposited with creditworthy banks and financial institutions with no recent history of default.

Assets classified as held for s

Assets classified as held for sale	12 Months Ended
	Dec. 31, 2021
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Assets classified as held for sale	33 Assets classified as held for sale The Group entered into agreements with China Aviation Supplies Co., Ltd. to dispose of certain flight equipment. The flight equipment with an aggregate carrying amount of RMB2 million (2020: RMB2 million) was recognised as assets classified as held for sale by the Group as at December 31, 2021, which are stated at the lower of their carrying amounts and their fair value less cost to sell.

Trade payables and bills payabl

Trade payables and bills payable	12 Months Ended
	Dec. 31, 2021
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Trade payables and bills payable	34 Trade payables and bills payable An ageing analysis of the trade and bills payables as at the end of the reporting period was as follows: December 31, 2021 December 31, 2020 RMB million RMB million Within 90 days 2,338 2,868 91 to 180 days 6 35 181 to 365 days 16 109 1-2 15 111 Over 2 years 79 97 2,454 3,220 Balances with related parties included in trade and bills payables are summarised in Note 45(c)(ii). As at December 31, 2021, bills payable of the Group accounted to RMB748 million (2020: RMB610 million ).

Contract liabilities

Contract liabilities	12 Months Ended
	Dec. 31, 2021
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Contract liabilities	35 Contract liabilities The Group has recognised the following liabilities related to contracts with customers: December 31, 2021 December 31, 2020 RMB million RMB million Sales in advance of carriage 2,128 2,155 Frequent flyer programme (Note 5) 1,492 1,781 Advances from customers 566 1,055 4,186 4,991 Current portion 3,287 3,671 Non-current 899 1,320

Other Payables and Accruals

Other Payables and Accruals	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Other Payables and Accruals	36 Other payables and accruals December 31, 2021 December 31, 2020 RMB million RMB million Salaries, wages and benefits 2,757 3,806 Take-off 2,150 2,330 Fuel cost 1,141 451 Expenses related to aircraft overhaul conducted 2,541 2,853 Duties and levies payable 1,739 1,353 Food and beverages 403 125 Payable for system services 1,060 1,643 Lease rentals 527 484 Other accrued operating expenses 426 567 Payable for purchase of property, plant and equipment 1,722 2,310 Pending output value added tax 216 250 Deposits received from ticket sales agents 375 420 Other deposit 540 529 Current portion of other long-term liabilities (Note 40) 293 235 Amounts due to related parties (Note 45(c)(ii)) 213 398 Current portion of post-retirement benefit obligations (Note 39(b)) 160 165 Others 2,482 3,700 Total 18,745 21,619

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2021
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Borrowings	37 Borrowings December 31, 2021 December 31, 2020 RMB million RMB million Non-current: Long-term bank borrowings - secured (note (a)) 16,401 8,638 - unsecured 11,750 4,526 Guaranteed bonds (note (b)) 8,648 9,585 Unsecured bonds (note (b)) 13,993 7,996 50,792 30,745 Current Current portion of non-current - secured (note (a)) 1,910 1,498 - unsecured 211 28 Current portion of guaranteed bonds (note (b)) 1,828 3,158 Current portion of unsecured bonds (note (b)) 3,436 4,000 Short-term bank borrowings - unsecured 37,614 21,966 Short-term debentures — 26,500 44,999 57,150 95,791 87,895 The borrowings are repayable as follows: December 31, 2021 December 31, 2020 RMB million RMB million Within one year 44,999 57,149 In the second year 14,080 5,936 Between third and fifth years, inclusive 15,900 17,680 After the fifth year 20,812 7,130 95,791 87,895 Notes: (a) As at December 31, 2021, the secured bank borrowings of the Group were secured by the related aircraft with a net carrying amount of RMB23,129 million (2020: RMB17,515 million) (Note 16). (b) Detailed borrowings from banks are listed below: Issue date Principal Notes Interest rate Ten-year 2013/03/18 RMB4.8 billion (i ) 5.05 % Ten-year 2016/10/24 RMB1.5 billion (ii ) 3.03 % Ten-year 2016/10/24 RMB1.5 billion (ii ) 3.30 % Three-year medium-term bonds 2019/03/05 RMB3 billion (iii ) 3.70 % Five-year corporate bonds 2019/08/19 RMB3 billion (iv ) 3.60 % Three-year corporate bonds 2019/12/06 KRW300 billion (v ) 2.40 % Three-year corporate bonds 2020/04/24 RMB2 billion (vi ) 2.39 % Ten-year 2021/03/11 RMB3 billion (vii ) 3.95 % Six-year 2021/03/11 RMB6 billion (viii ) 3.68 % Five-year credit enhanced bonds 2021/07/15 SGD0.5 billion (ix ) 2.00 % (i) On March 18, 2013 , the Company issued ten-year guaranteed bonds with a principal amount of RMB4.8 billion at an issue price equal to the face value of the bonds. The bonds bear interest at the rate of 5.05% per annum, which is payable annually. The principal of the bonds will mature and become repayable on March 18, 2023 . CEA Holding has unconditionally and irrevocably guaranteed the due payment and performance of the above bonds (Note 45 (d)). (ii) On October 24, 2016 , the Company issued ten-year corporate bonds with a total principal amount of RMB3 billion, of which bonds of R MB1.5 billion bear interest at the rate of 3.03% per annum and the remaining bonds of R MB1.5 billion bear interest at the rate of 3.30% per annum. The bonds interest is payable annually. The principal of the bonds will mature and become repayable on October 24, 2026 . CEA Holding has unconditionally and irrevocably guaranteed the due payment and performance of the above bonds (Note 45 (d)). (iii) On March 5, 2019 , the Company issued three-year medium-term bonds with a principal amount of RMB3 billion , at an issue price equal to the face value of the bonds. The bonds bear interest at the rate of 3.70% per annum , which is payable annually. The principal of the bonds will mature and become repayable on March 7, 2022 . (iv) On August 19, 2019 , the Company issued five-year corporate bonds with a total principal amount of RMB3 billion . The bonds bear interest at the rate of 3.60% per annum, which is payable annually. The principal of the bonds will mature and become repayable on August 20, 2024 . (v) On December 6, 2019 , Eastern Air Overseas issued three-year corporate bonds with a principal amount of KRW300 billion , at an issue price equal to the face value of the bonds. The bonds bear interest at the rate of 2.40% per annum , which is payable annually. The principal of the bonds will mature and become repayable on December 6, 2022 . The Company has unconditionally and irrevocably guaranteed the due payment and performance of the above bonds. (vi) On April 24, 2020 , the Company issued three-year corporate bonds with a total principal amount of RMB2 billion . The bonds bear interest at the rate of 2.39% per annum , which is payable annually. The principal of the bonds will mature and become repayable on April 28, 2023 . (vii) On March 11, 2021 , the Company issued ten-year corporate bonds with a principal amount of RMB3 billion. The bonds bear interest at the rate of 3.95% pe r annum which is payable annually. The principle of the bonds will mature and become repayable on March 12, 2031 . (viii) On March 11, 2021 , the Company issued six-year corporate bonds with a principal amount of RMB6 billion. The bonds bear interest at the rate of 3.68% per annum which is payable annually. The principle of the bonds will mature and become repayable on March 12, 2027 . (ix) On July 15, 2021 , Eastern Air Overseas issued five-year credit enhanced bonds with a principal amount of SGD0.5 billion. The bonds bear interest at the rate of 2.00% per annum which is payable semi-annually. The principle of the bonds will mature and become repayable on July 15, 2026 . The bonds are secured by a standby letter of credit issued by Industrial and Commercial Bank of China Limited Shanghai Municipal Branch. The terms of the long-term borrowings and bonds were summarised as follows: Interest rate and final maturities December December Long-term bank borrowings RMB denominated Interest rates ranging from 2.40% to 4.15% with final maturities through 2045 (2020: 2.40% to 4.21%) 28,302 11,651 USD denominated Interest rates ranging from 6-month +0.70% to 6-month maturities through 2022 (2020: 6-month +0.70% to 6-month 13 375 EUR denominated Interest rates at 3-month final maturities through 2026 (2020: 3 months EURLIBOR +0.5%) 1,957 2,664 Guaranteed bonds RMB denominated Interest rates ranging from 3.03% to 5.05% with final maturities through 2026 (2020: 3.03% to 5.05%) 6,499 7,798 JPY denominated Interest rates ranging from 0.33% to 0.64% with final maturities through 2021 (2020: 0.33% to 0.64%) — 3,158 KRW denominated Interest rate at 2.40% with final maturities through 2022 (2020: 2.40%) 1,606 1,787 SGD denominated Interest rate at 2.00% with final maturities through 2026 2,371 — Unsecured bonds RMB denominated Interest rates ranging from 2.39 final maturities through 2031 (2020: from 2.39% to 3.70%) 17,429 11,996 58,177 39,429 Short-term borrowings of the Group are repayable within one year. As at December 31, 2021, the interest rates relating to such borrowings were 2.00% to 3.00% (2020: 1.21% to 3.30%) per annum.

Provision For Lease Return Cost

Provision For Lease Return Costs For Aircraft And Engines	12 Months Ended
	Dec. 31, 2021
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Provision For Lease Return Costs For Aircraft And Engines	38 Provision for lease return costs for aircraft and engines 2021 2020 At January 1 6,990 7,178 Accrual 373 283 Utilisation (93 ) (471 ) At December 31 7,270 6,990 Less: current portion — (24 ) Non-current 7,270 6,966

Post-Retirement Benefit Obligat

Post-Retirement Benefit Obligations	12 Months Ended
	Dec. 31, 2021
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Post-Retirement Benefit Obligations	39 Post-retirement benefit obligations (a) Pension — defined contribution The group companies participate in defined contribution retirement schemes organised by municipal governments of various provinces in which the group companies operate. Substantially all of the Group’s PRC employees are eligible to participate in these defined contribution retirement schemes. Therefore, the employees are entitled to a monthly pension based on certain formulas. The relevant government agencies are responsible for the pension liability to these retired employees. In addition, the group companies have implemented an additional defined contribution retirement pension scheme for eligible employees since 2014. As at December 31, 2021 and December 31, 2020, the Group cannot use forfeited contributions to reduce its contributions to the pension schemes. (b) Post-retirement benefits In addition to the above schemes, the Group provides eligible retirees with other post-retirement benefits, including retirement subsidies, transportation allowance as well as other welfare. The expected cost of providing these post-retirement benefits is actuarially determined and recognised by using the projected unit credit method, which involves a number of assumptions and estimates, including inflation rate, discount rate, annual increase rate of post-retirement medical expenses and mortality rate. The plan is exposed to interest rate risk and the risk of changes in the life expectancy for pensioners The most recent actuarial valuation of the post-retirement benefit obligations was carried out at December 31, 2021 with assistance from a third-party consultant using the projected unit credit actuarial valuation method. The post-retirement benefit obligations recognised in the consolidated statement of financial position are as follows: 2021 2020 Post-retirement benefit obligations 2,527 2,538 Less: current portion (160 ) (165 ) Non-current 2,367 2,373 The principal actuarial assumptions utilised as at the end of the reporting period are as follows: 2021 2020 Discount rates for post-retirement benefits 2.85 % 3.40 % Mortality rate China Insurance Life Mortality Table (2010-2013). CL5 for Male and CL6 for Female China Insurance Life Mortality Table (2010-2013). Annual increase rate of post-retirement medical expenses 6.50 % 6.50 % Inflation rate of pension benefits 2.50 % 2.50 % A quantitative sensitivity analysis for significant assumptions at the end of the reporting period is shown below: Increase in Increase/ post-retirement Decrease in Increase/ post-retirement 2021 Discount rate for post-retirement benefits 0.25 (66 ) 0.25 69 Annual increase rate of pension benefits 1.00 246 1.00 (211 ) Annual increase rate of medical expenses 1.00 37 1.00 (31 ) 2020 Discount rate for post-retirement benefits 0.25 (78 ) 0.25 81 Annual increase rate of pension benefits 1.00 244 1.00 (208 ) Annual increase rate of medical expenses 1.00 43 1.00 (36 ) The sensitivity analyses above have been determined based on a method that extrapolates the impact on net post-retirement benefit obligations as a result of reasonable changes in key assumptions occurring at the end of the reporting period. Expected contributions to be made in the future years out of the post-retirement benefit obligations were as follows: 2021 2020 Within the next 12 months 161 165 Between 2 and 5 years 635 660 Between 6 and 10 years 757 805 Over 10 years 1,998 2,449 Total expected payments 3,551 4,079 The average duration of the post-retirement benefit obligations at the end of 2021 was 11 years (2020: 13 years). The movements in the post-retirement benefit obligations were as follows: 2021 Pension cost charged to profit or loss Remeasurement losses in other comprehensive income January 1, 2021 Service cost Net interest Sub- total included in profit or loss Actuarial changes arising from changes in financial assumptions Actuarial changes arising from changes in demographic assumptions Experience adjustments Sub-total included in other compreh- income Benefit settled December 31, 2021 RMB RMB RMB RMB RMB million RMB million RMB million RMB RMB RMB Defined benefit obligations/ benefit liability 2,538 — 83 83 140 — (56 ) 84 (178 ) 2,527 2020 Pension cost charged to profit or loss Remeasurement losses in other comprehensive income January 1, 2020 Service cost Net interest Sub- total included in profit or loss Actuarial changes arising from changes in financial assumptions Actuarial changes arising from changes in demographic assumptions Experience adjustments Sub-total included in other compreh- income Benefit settled December 31, 2020 RMB RMB RMB RMB RMB million RMB million RMB million RMB RMB RMB Defined benefit obligations/ benefit liability 2,584 — 85 85 — — 61 61 (192 ) 2,538

Other Long-term Liabilities

Other Long-term Liabilities	12 Months Ended
	Dec. 31, 2021
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Other Long-term Liabilities	40 Other long-term liabilities December 31, 2021 December 31, 2020 RMB million RMB million Long-term duties and levies payable relating to finance leases 908 1,159 Deferred gains relating to government grants 91 121 Provision for early retirement benefit obligations and other benefit obligations 315 251 Other long-term payables 1,227 659 2,541 2,190 Less: current portion included in other payables and accruals (Note 36) (293 ) (235 ) Non-current 2,248 1,955

Share Capital

Share Capital	12 Months Ended
	Dec. 31, 2021
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Share Capital	41 Share capital December 31, 2021 December 31, 2020 RMB million RMB million Registered, issued and fully paid of RMB1.00 each A shares listed on the Shanghai Stock Exchange (“A Shares”) 13,697 11,202 — Tradable shares with trading moratorium 3,889 1,394 — Tradable shares without trading moratorium 9,808 9,808 H shares listed on the Stock Exchange of Hong Kong Limited (“H Shares”) 5,177 5,177 — Tradable shares with trading moratorium 518 518 — Tradable shares without trading moratorium 4,659 4,659 Total 18,874 16,379 Pursuant to articles 50 and 51 of the Company’s articles of association, both the listed A shares and listed H shares are registered ordinary shares and carry equal rights. According to the approval of the China Securities Regulatory Commission, the Company completed the non-public million A shares to CEA Holding on October 27, 2021 , raising a total of RMB million in net funds.

Reserves

Reserves	12 Months Ended
	Dec. 31, 2021
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Reserves	42 Reserves Share Capital reserve (note (a)) Hedging reserve Statutory reserve (note (b)) Other reserves Retained Total RMB RMB RMB RMB RMB RMB million RMB Balance at January 1, 2020 37,070 (767 ) 24 782 (2,362 ) 17,882 52,629 Unrealised gains on cash flow hedges — — 158 — — — 158 Fair value movements in equity investments designated at fair value through other comprehensive income — — — — (203 ) — (203 ) Fair value changes of equity investments designated at fair value through other comprehensive income held by an associate — — — — 2 — 2 Actuarial gains on post-retirement benefit obligations — — — — (61 ) — (61 ) Loss for the year — — — — — (11,836 ) (11,836 ) Final 2019 dividend — — — — — (819 ) (819 ) At December 31, 2020 37,070 (767 ) 182 782 (2,624 ) 5,227 39,870 Balance at January 1, 2021 37,070 (767 ) 182 782 (2,624 ) 5,227 39,870 Unrealised gains on cash flow hedges — — (228 ) — — — (228 ) Fair value movements in equity investments designated at fair value through other comprehensive income — — — — (237 ) — (237 ) Fair value changes of equity investments designated at fair value through other comprehensive income held by an associate — — — — (7 ) — (7 ) Actuarial gains on post-retirement benefit obligations — — — — (79 ) — (79 ) Loss for the year — — — — — (12,214 ) (12,214 ) Issue of ordinary shares, net of transaction costs and tax 8,325 — — — — — 8,325 Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings — — — — (157 ) 157 — Transactions with non-controlling (689 ) — — — — — (689 ) At December 31, 2021 44,706 (767 ) (46 ) 782 (3,104 ) (6,830 ) 34,741 Notes: (a) Capital reserve Capital reserve mainly represents the difference between the fair value of the net assets injected and the nominal amount of the Company’s share capital issued in respect of the Group restructuring carried out in June 1996 for the purpose of the Company’s listing. (b) Statutory reserve According to the PRC Company Law, the Company is required to transfer a portion of the profits to the statutory reserve. The transfer to this reserve must be made before distribution of dividends to shareholders and when there are retained profits at the end of the financial year.

Notes to the Consolidated State

Notes to the Consolidated Statement of Cash Flows	12 Months Ended
	Dec. 31, 2021
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Notes to the Consolidated Statement of Cash Flows	43 Notes to the consolidated statement of cash flows (a) Cash generated from operations 2021 2020 2019 RMB million RMB million RMB million (Loss)/profit before income tax (17,513 ) (16,488 ) 4,299 Adjustments for: Depreciation of property, plant and equipment 9,490 9,067 9,078 Depreciation of right-of-use 12,389 12,367 12,298 Depreciation of investment properties 10 12 25 Amortisation of intangible assets 210 239 143 Amortisation of other non-current 619 570 536 Gain on disposal of property, plant and equipment and right-of-use (719 ) (17 ) (22 ) Gain on disposal of an investment in subsidiaries, associates and joint ventures (142 ) — (64 ) Dividend income from equity investments at fair value through other comprehensive income (3 ) (12 ) (19 ) Dividend income from a financial asset at fair value through profit or loss (5 ) (6 ) (3 ) Share of results of associates 97 82 (265 ) Share of results of joint ventures 44 13 (17 ) Net foreign exchange (gains)/loss (1,506 ) (2,746 ) 890 Fair value losses/(gains), net: Financial asset at fair value through profit or loss 11 26 (25 ) COVID-19-related — (3 ) — Impairment charges 22 184 4 Impairment losses on financial assets, net 28 32 16 Interest expense 5,812 5,214 5,169 Operating profit before working capital changes 8,844 8,534 32,043 Changes in working capital Flight equipment spare parts 240 200 (457 ) Trade receivables 159 593 (275 ) Prepayments and other receivables (916 ) 2,893 (2,336 ) Contract liabilities (805 ) (6,686 ) 1,281 Restricted bank deposits — (6 ) 9 Trade and bills payables (766 ) (657 ) (163 ) Other payables and accruals (1,686 ) (983 ) 1,459 Other long-term liabilities 489 (2,174 ) (1,916 ) Post-retirement benefit obligations (11 ) (46 ) (125 ) Provision for lease return costs for aircraft and engines 280 (188 ) 617 Cash generated from operations 5,828 1,480 30,137 (b) Major non-cash 2021 2020 RMB million RMB million Additions to right-of-use 744 — Additions to right-of-use 18,202 7,191 (c) Changes in liabilities arising from financing activities Bank and other loans Lease liabilities RMB million RMB million At January 1, 2019 55,126 109,306 Changes from financing cash flows (3,427 ) (23,895 ) Foreign exchange movement 138 851 Disposal of a subsidiary — (10 ) New leases — 24,023 At December 31, 2019 51,837 110,275 At January 1, 2020 51,837 110,275 Changes from financing cash flows 36,173 (18,444 ) COVID-19-related — (3 ) Foreign exchange movement (115 ) (2,768 ) New leases — 7,191 At December 31, 2020 87,895 96,251 At January 1, 2021 87,895 96,251 Changes from financing cash flows 7,778 (15,725 ) COVID-19-related — — Other addition 702 486 Foreign exchange movement (584 ) (738 ) New leases — 18,202 At December 31, 2021 95,791 98,476 (d) Total cash outflow for leases The total cash outflow for leases included in the statement of cash flows is as follows: 2021 2020 2019 RMB million RMB million RMB million Within operating activities (383 ) (358 ) (631 ) Within investing activities (1,516 ) (1,183 ) (1,449 ) Within financing activities (18,838 ) (22,099 ) (27,789 )

Commitments

Commitments	12 Months Ended
	Dec. 31, 2021
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Commitments	44 Commitments (a) The Group had the following capital commitments at the end of the reporting period: December 31, December 31, RMB million RMB million Contracted for: — Aircraft, engines and flight equipment (note i) 24,922 37,277 — Other property, plant and equipment 2,980 3,646 — Investments 2,163 1,335 30,065 42,258 Note: (i) Contracted expenditures for the above aircraft, engines and flight equipment, including deposits prior to delivery, subject to future inflation increase built into the contracts were expected to be paid as follows: December 31, December 31, RMB million RMB million Within one year 9,530 13,542 In the second year 8,018 13,692 In the third year 7,374 7,109 Over three years — 2,934 24,922 37,277 The above capital commitments represent the future outflows of cash or other resources. (ii) On March 11, 2019, the Civil Aviation Administration of China ordered all domestic airlines to ground all 737MAX-8 aircraft. The Group has certain 737MAX-8 aircraft on order as at December 31, 2021 and has not taken delivery of any 737MAX-8 aircraft since the grounding. In 2021, certain progress was reached in our follow-on negotiations with Boeing for the B737 MAX fleet. Any cash received will be accounted for as an adjustment to the purchase price of current and future deliveries and will flow through consolidated statement of operations as reduced depreciation expense over the life of the aircraft, and as cash proceeds from investing activities on the consolidated statement of cash flow. (b) The Group has various lease contracts that have not yet commenced as at December 31, 2021. The future lease payments for these non-cancellable fifth years and RMB3,730 million due over five years (2020: nil) (c) As at December 31, 2021, lease commitments for short-term leases amounted to RMB59 million (2020: RMB130 million).

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
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Related Party Transactions	45 Related party transactions The Group is controlled by CEA Holding, which directly owns 40.10% of the Company’s shares as at December 31, 2021 (December 31, 2020: 30.97%). In addition, through CES Global Holdings (Hong Kong) Limited and CES Finance Holding Co., Limited, two wholly owned subsidiaries of CEA Holding, CEA Holding indirectly owns additional shares of the Company of approximately 13.91% and 2.42% respectively as at December 31, 2021 (December 31, 2020: 16.03% and 2.79%). The Company is a state-owned enterprise established in the PRC and is controlled by the PRC government, which also owns a significant portion of the productive assets in the PRC. In accordance with IAS 24 “Related Party Disclosures”, government-related entities and their subsidiaries, directly or indirectly controlled, jointly controlled or significantly influenced by the PRC government are defined as related parties of the Group. On that basis, related parties include CEA Holding and its subsidiaries (other than the Group), other government-related entities and their subsidiaries (“Other State-owned Enterprises”), other entities and corporations over which the Company is able to control or exercise significant influence and key management personnel of the Company as well as their close family members. For the purpose of the related party transaction disclosures, the directors of the Company believe that meaningful information in respect of related party transactions has been adequately disclosed. (a) Nature of related parties that do not control or controlled by the Group: Name of related party Relationship with the Group Eastern Air Group Finance Co., Ltd. (“Eastern Air Finance Company”) Associate of the Company Eastern Aviation Import & Export Co., Ltd. and its subsidiaries (“Eastern Import & Export”) Associate of the Company Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. (“Shanghai P&W”) Associate of the Company Eastern Aviation Advertising Service Co., Ltd. and its subsidiaries (“Eastern Advertising”) Associate of the Company Shanghai Collins Aviation Maintenance Service Co., Ltd. (“Collins Aviation”) Associate of the Company Shanghai Airlines Tours International (Group) Co., Ltd. and its subsidiaries (“Shanghai Airlines Tours”) Associate of the Company China Eastern Air Catering Investment Co., Limited and its subsidiaries Associate of the Company (“Eastern Air Catering”) CAE Melbourne Flight Training Pty Limited (“CAE Melbourne”) Joint venture of the Company Shanghai Technologies Aerospace Co., Ltd. (“Technologies Aerospace”) Joint venture of the Company Eastern China Kaiya System Integration Co., Ltd. (“China Kaiya”) Joint venture of the Company Xi An Cea Safran Landing Systems Services Co., Ltd. (“XIESA”) Joint venture of the Company CEA Development Co., Limited and its subsidiaries (“CEA Development”) Controlled by the same parent company Eastern Air Logistics Co., Ltd. and its subsidiaries (“Eastern Logistics”) Controlled by the same parent company Shanghai Eastern Airlines Investment Co., Ltd. and its subsidiaries (“Eastern Investment”) Controlled by the same parent company CES International Financial Leasing Corporation Limited and its subsidiaries (“CES Lease Company”) Controlled by the same parent company TravelSky Technology Limited (“TravelSky”) A key management personnel of the Company is a director of Travelsky Sichuan Airlines Co.,Ltd. (“Sichuan Air”) A key management personnel of the Company is a director of Sichuan Air Air France-KLM A key management personnel of the Company is a director of AFK Juneyao Airlines Co., Ltd and its subsidiaries (“Juneyao Air”) Shareholder who hold more than 5% of the company’s voting shares (b) Related party transactions Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Purchase of goods and services Payments on food and beverages* Eastern Air Catering (i ) 1,636 812 1,471 Eastern Import & Export (i ) 62 50 56 Handling charges for purchase of aircraft, flight equipment, flight equipment spare parts, other property, plant and flight equipment and repairs for aircraft and engines* Eastern Import & Export (i ) 135 132 142 Repairs and maintenance expense for aircraft and engines Shanghai P&W (i ) 973 1,180 1,762 Technologies Aerospace (i ) 179 184 221 Wheels & Brakes (i ) — 45 144 Shanghai Hute (i ) — 116 88 XIESA (i ) — 67 2 Payments on cabin cleaning services Eastern Advertising (i ) 3 9 22 Advertising expense* Eastern Advertising (i ) 25 26 29 Payments on system services China Kaiya (i ) 16 18 16 Equipment maintenance fee* Collins Aviation (i ) 36 33 45 CEA Development (i ) 48 81 98 Automobile maintenance service, aircraft maintenance, providing transportation automobile and other products* CEA Development (i ) 2 4 13 Property management and green maintenance expenses* CEA Development (i ) 185 195 205 Payments on hotel accommodation service* CEA Development (i ) 120 122 134 Shanghai Airlines Tours (i ) 40 10 23 Payments on construction and management agent* Eastern Investment (i ) 14 13 14 Payments on logistics services Eastern Import & Export (i ) — — 49 Eastern Logistics (i ) 103 115 53 Civil aviation information network services** TravelSky (i ) 230 552 753 Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Purchase of goods and services (continued) Flight equipment spare parts maintenance** CASC (i ) — 107 143 Flight training fee CAE Melbourne (i ) — 41 70 Payments on aviation transportation cooperation and support services** AFK (i ) 65 221 537 Payments on aviation transportation cooperation services Juneyao Air (i ) 4 2 2 Flight equipment spare parts maintenance and support services AFK (i ) 22 10 19 Bellyhold space operation cost* Eastern Logistics (i ) — — 310 Transfer of pilots Eastern Logistics (i ) — — 11 Cargo terminal business support services* Eastern Logistics (i ) 369 286 481 Bellyhold container management Eastern Logistics (i ) 13 13 13 Provision of services Contractual revenue from bellyhold space* (note) Eastern Logistics (i ) — — 3,826 Exclusive operation transportation in relation to the passenger aircraft cargo business* (note) Eastern Logistics (i ) 8,309 4,895 — Freight logistics support services* Eastern Logistics (i ) 192 185 135 Software system and support services Eastern Logistics (i ) 14 5 4 Transfer of pilots Eastern Logistics (i ) 29 — — Media royalty fee Eastern Advertising (i ) 14 14 15 Aviation transportation cooperation and support services** AFK (i ) 14 105 593 Aviation transportation cooperation services Juneyao Air (i ) 16 14 11 Transfer of pilots Juneyao Air (i ) 4 22 — Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Provision of services (continued) Flight equipment spare parts maintenance and support services Juneyao Air (i) 24 35 41 Aviation transportation cooperation services Sichuan Air (i) 10 — — Eastern Investment (i) 3 — — Sale of Goods Eastern Air Catering (ii) 48 — — Rental income Rental income for land and buildings under short-term leases* Eastern Air Catering (ii) 48 15 — Sichuan Air (ii) 9 — — CEA Development (ii) 5 — — Juneyao Air (ii) 4 — — Eastern Import & Export (ii) 3 — — Rental income for Intangible assets Eastern Logistics (ii) 5 — — Rental income for cargo terminal* Eastern Logistics (ii) 81 — — Lease Payments Lease payments for land and buildings* CEA Holding (ii) 7 36 40 Eastern Investment (ii) 210 98 83 Eastern Air Catering (ii) 2 — — Settlements of lease liabilities on aircraft and engines CES Lease Company (ii) 7,245 6,667 5,779 Lease payments for special vehicle and equipment* CEA Development (ii) 83 37 21 In 2021, the additional amount of right-of-use assets for the newly-introduced aircraft and engines from CES Lease Company was RMB11,061 million; the additional amount of right-of-use assets for the newly-leased land and buildings from Eastern Investment was RMB302 million; the additional amount of right-of-use assets for the newly-leased special vehicle and equipment from CEA Development was RMB195 million. In 2021, the interest amounts on lease liabilities due to CES Lease Company was RMB1,311 million; the interest amounts on lease liabilities due to Eastern Investment was RMB31 million; the interest amounts on lease liabilities due to CEA Development was RMB9 million. As at December 31, 2021, the lease liability due to CEA Development, Eastern Investment and Eastern Air Catering were RMB323 mi l Interest expense Interest expense on loans CEA Holding (iii) 41 32 27 Eastern Air Finance Company (iii) 21 5 5 Interest income Interest income on loans CAE Melbourne (iii) — 1 — Interest income on deposits Eastern Air Finance Company (iii) 20 24 15 Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Gains on disposal of equity Dispose 100% equity of China Eastern Airlines Grand Sichuan Air (i ) 97 — — Dispose 49% equity of Yunnan Civil Aviation Kaiya TravelSky (i ) 8 — — Dispose 27.5% equity of Beijing Xinghang Aviation Eastern Investment (i ) 29 — — Catering trolleys and aircraft on-board supplies Eastern Air Catering (i ) 123 — — Note: To address the business competition between the passenger aircraft cargo business of the Company and the all-cargo COVID-19’s “passenger-to-cargo (i) The Group’s pricing policies on goods and services purchased from and provided to related parties are mutually agreed between contract parties (ii) The Group’s pricing policies on related party lease payments are mutually agreed between contract parties. (iii) The Group’s pricing policies on related party interest rates are mutually agreed based on benchmark interest rates. * These related party transactions also constitute connected transactions or continuing connected transactions as defined in Chapter 14A of the Rules Governing the Listing of Securities on the Stock Exchange (the “Listing Rules”). ** This related party transaction constitutes a continuing connected transaction pursuant to the Rules Governing the Listing of Stocks on the Shanghai Stock Exchange. During the year ended December 31, 2021,2020 and 2019, the Group’s significant transactions with entities that are controlled, jointly controlled or significantly influenced by the PRC government mainly include most of its bank deposits/borrowings and the corresponding interest income/expense and part of sales and purchases of goods and services. The price and other terms of such transactions are set out in the agreements governing these transactions or as mutually agreed. (c) Balances with related parties (i) Amounts due from related parties December 31, 2021 December 31, 2020 RMB million RMB million Trade receivables Eastern Logistics 497 630 Juneyao Air 5 8 Eastern Air Catering 17 — Others 2 4 521 642 December 31, 2021 December 31, 2020 RMB million RMB million Prepayments and other receivables Eastern Import & Export 134 158 Technologies Aerospace 6 6 Eastern Air Catering 55 36 Eastern Advertising — 1 CEA Development 1 11 CEA Holding 10 228 CASC — 13 TravelSky 42 49 Juneyao Air 5 4 Eastern Air Finance Company 120 240 Others 9 22 382 768 (ii)  Amounts due to related parties December 31, 2021 December 31, 2020 RMB million RMB million Trade and bills payables Eastern Import & Export 472 363 Eastern Air Catering 583 266 Technologies Aerospace 59 95 CEA Development 81 96 Shanghai P&W 280 213 Collins Aviation 8 9 CEA Holding 23 28 CASC — 27 Shanghai Hute — 32 TravelSky 7 7 Wheels & Brakes — 14 Shanghai Airlines Tours — 1 Eastern Advertising 6 — Eastern Investment 1 74 XIESA — 32 Others 6 13 1,526 1,270 December 31, 2021 December 31, 2020 RMB million RMB million Other payables and accruals Eastern Import & Export — 37 Eastern Air Catering 1 2 CEA Holding 68 99 CEA Development 15 1 Eastern Investment 61 61 CES Lease Company 63 189 CASC — 2 Others 5 7 213 398 December 31, 2021 December 31, 2020 RMB million RMB million Lease liabilities CES Lease Company 46,251 42,168 December 31, 2021 December 31, 2020 RMB million RMB million Other long-term liabilities Eastern Air Catering 64 — 64 — Except for the amounts due to CES Lease Company, which are related to the aircraft under leases, all other amounts due to related parties are interest-free and payable within normal credit terms given by trade creditors. (iii) Short-term deposits, loan and borrowings with related parties Average interest rate for the December 31, December 31, 2021 2020 2021 2020 RMB million RMB million Short-term deposits Eastern Air Finance Company 0.23 % 0.35 % 12,269 5,474 Short-term borrowings (included in borrowings) Eastern Air Finance Company 2.80 % 2.80 % 6,000 4,000 CEA Holding 2.80 % — 11,000 — Eastern Investment 2.80 % — 7,700 — Long-term borrowings (included in borrowings) CEA Holding — 3.86 % — 828 Loan to a joint venture CAE Melbourne 8.00 % 3.74 % 6 11 (d) Guarantees by the holding company As at December 31, 2021, bonds of the Group guaranteed by CEA Holding amounted to RMB7.8 billion (December 31, 2020: RMB7.8 billion). (e) Key management compensation The compensation paid or payable to key management for employee services mainly comprising salaries and other short-term employee benefits were analysed as follows: 2021 2020 2019 RMB million RMB million RMB million Other payables and accruals Directors and supervisors 2 4 1 Senior management 1 1 8 3 5 9

Financial Instruments by Catego

Financial Instruments by Category	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Financial Instruments by Category	46 Financial instruments by category The group holds the following financial instruments: Note December 31, December 31, Financial assets RMB million RMB million Financial assets at amortised cost Trade receivables 29 974 1,124 Prepayments and other receivables 31 2,397 2,452 Cash and cash equivalents 32 12,950 7,651 Restricted bank deposits 32 12 12 Financial assets included in other non-current 142 150 Financial assets at fair value through other comprehensive income Equity investments designed at fair value through other comprehensive income 24 457 995 Financial assets at fair value through profit or loss 30 84 95 Derivative financial instruments 25 — 399 17,016 12,878 Note December 31, December 31, Financial liabilities RMB million RMB million Liabilities at amortised cost Trade and bills payables 2,454 3,220 Financial liabilities included in other payables and accruals 13,484 15,790 Borrowings 37 95,791 87,895 Lease liabilities 18(b) 98,476 96,251 Derivative financial instruments 25 46 141 210,251 203,297

Fair Value and Fair Value Hiera

Fair Value and Fair Value Hierarchy of Financial Instruments	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Fair Value and Fair Value Hierarchy of Financial Instruments	47 Fair value and fair value hierarchy of financial instruments The carrying amounts and fair values of the Group’s financial instruments, other than those with carrying amounts that reasonably approximate to fair values, were as follows: December 31, 2021 December 31, 2020 Carrying Fair value Carrying Fair value RMB million RMB million RMB million RMB million Financial assets Equity investments designated at fair value through other comprehensive income 457 457 995 995 Financial asset at fair value through profit or loss 84 84 95 95 Derivative financial assets — — 399 399 Deposits relating to aircraft held under leases included in other non-current 140 139 143 142 Total 681 680 1,632 1,631 Financial liabilities Derivative financial liabilities 46 46 141 141 Long-term borrowings 50,792 49,971 30,745 32,355 Lease liabilities 82,126 81,232 82,178 82,653 Total 132,964 131,249 113,064 115,149 The Group has assessed that the fair values of cash and cash equivalents, restricted bank deposits, trade receivables, trade and bills payables, financial assets included in prepayments and other receivables, financial liabilities included in other payables and accruals, short-term bank borrowings and short-term debentures approximate to their carrying amounts largely due to the short-term maturities of these instruments. The fair values of the deposits relating to aircraft held under leases included in other non-current The Group enters into derivative financial instruments, including forward currency contracts, fuel hedging contracts and interest rate swaps with various counterparties, principally financial institutions with high credit ratings Derivative financial instruments are measured using valuation techniques similar to forward pricing and swap models, using present value calculations. The models incorporate various market observable inputs including the foreign exchange spot and forward rates, interest rate curves and fuel hedging price. The carrying amounts of forward currency contracts, fuel hedging contracts and interest rate swaps are the same as their fair values. As at December 31, 2021, the marked to market value of the derivative asset position is net of a credit valuation adjustment attributable to derivative counterparty default risk. The changes in counterparty credit risk had no material effect on the hedge effectiveness assessment for derivatives designated in hedge relationship and other financial instruments recognised at fair value. The fair values of listed equity investments are based on quoted market prices. The fair values of unlisted equity investments designated at fair value through other comprehensive income have been estimated using a market-based valuation technique based on assumptions that are not supported by observable market prices or rates. The valuation requires the directors to determine comparable public companies (peers) based on industry, size, leverage and strategy, and calculates an appropriate price multiple, such as enterprise value to earnings before interest, taxes, depreciation and amortisation (“EV/EBITDA”) multiple and price to earnings (“P/E”) multiple, for each comparable company identified. The multiple is calculated by dividing the enterprise value of the comparable company by an earnings measure. The trading multiple is then discounted for considerations such as illiquidity and size differences between the comparable companies based on company-specific facts and circumstances. The discounted multiple is applied to the corresponding earnings measure of the unlisted equity investments to measure the fair value. The directors believe that the estimated fair values resulting from the valuation technique, which are recorded in the consolidated statement of financial position, and the related changes in fair values, which are recorded in other comprehensive income, are reasonable, and that they were the most appropriate values at the end of the reporting period. Set out below is a summary of significant unobservable inputs to the valuation of financial instruments together with a quantitative sensitivity analysis as at December 31, 2021 and 2020: Valuation technique Significant unobservable input Range Sensitivity of fair value to the Unlisted equity investments Valuation multiples Discount for lack of marketability 20%(December 31, 1% (December 31, 2020: 1%) increase/decrease in multiple would result in increase/ decrease in fair value by RMB 3 million (December 31, 2020: RMB 5 million) The discount for lack of marketability represents the amounts of premiums and discounts determined by the Group that market participants would take into account when pricing the investments. Fair value hierarchy The following tables illustrate the fair value measurement hierarchy of the Group’s financial instruments: Assets and liabilities measured at fair value: As at December 31, 2021 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) Total Assets Equity investments designated at fair value through other comprehensive income 237 — 220 457 Financial asset at fair value through profit or loss 84 — — 84 Total 321 — 220 541 Liabilities Derivative financial liabilities — Interest rate swaps — 46 — 46 Total — 46 — 46 As at December 31, 2020 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) Total Assets Equity investments designated at fair value through other comprehensive income 457 — 538 995 Derivative financial assets — Forward fuel contracts — 399 — 399 Financial asset at fair value through profit or loss 95 — — 95 Total 552 399 538 1,489 Liabilities Derivative financial liabilities — Interest rate swaps — 140 — 140 — Forward fuel contracts — 1 — 1 Total — 141 — 141 During the year, there were no transfers of fair value measurements between Level 1 and Level 2 (2020: Nil; 2019: Nil) and no transfers into or out of Level 3 for both financial assets and financial liabilities during the year of 2020 (2019: Nil). The following table presents the changes in level 3 items for the year ended December 31, 2021: Equity investments designated at fair value through other comprehensive income RMB million Opening balance as at January 1, 20 21 538 Disposals (75 ) Recognised in other comprehensive income – net (243 ) Closing balance as at December 31, 2021 220 As at December 31, 2021 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) RMB million Total Assets Deposits relating to aircraft held under leases included in other non-current — 139 — 139 Liabilities Long-term borrowings — 49,971 — 49,971 Lease liabilities — 81,232 — 81,232 — 131,203 — 131,203 As at December 31, 2020 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) RMB million Total Assets Deposits relating to aircraft held under leases included in other non-current — 142 — 142 Liabilities Long-term borrowings 4,936 27,419 — 32,355 Lease liabilities — 82,653 — 82,653 4,936 110,072 115,008

Financial Risk Management

Financial Risk Management	12 Months Ended
	Dec. 31, 2021
Investments accounted for using equity method [abstract]
Financial Risk Management	48 Financial risk management The Group’s activities expose it to a variety of financial risks: market risk (including foreign currency risk, interest rate risk, fuel price risk and equity price risk), credit risk and liquidity risk. The Group’s overall risk management program focuses on the unpredictability of financial markets and seeks to minimise potential adverse effects on the Group’s financial performance. The Group uses derivative financial instruments to manage risk exposures whenever management considers necessary. Risk management is carried out by a central treasury department (the “Group Treasury”) under policies approved by the Board. The Group Treasury identifies, evaluates and hedges financial risks in close cooperation with the Group’s operating units. The overall risk management strategies, as well as written policies covering specific areas such as foreign currency risk, interest rate risk, credit risk, use of derivative financial instruments and non-derivative 48.1 Financial risk factors (a) Market risk (i) Foreign exchange risk The Group operates its business in many countries and territories. The Group generates its revenue in different currencies, and the amount of its foreign currency liabilities at the end of the period is much higher than that of its foreign currency assets. The Group’s major liability items (mainly resulting from purchases of aircraft) are mainly priced and settled in foreign currencies, primarily USD. The Group is exposed to currency risks from fluctuations in various foreign currency exchange rates against RMB. The RMB is not freely convertible into other currencies, however, under Mainland China’s Foreign Exchange Control Regulations and Administration of Settlement, Sale and Payment of Foreign Exchange Regulations, the Group is permitted to exchange RMB for other currencies through banks authorised to conduct foreign exchange business. In addition, fluctuations in foreign currency exchange rates will affect the Group’s future costs for purchases of aircraft, flight equipment and aviation fuel, and take-off The following tables detail the Group’s exposure to major currency risk at the reporting date: 2021 USD EUR SGD JPY RMB million RMB million RMB million RMB million Trade receivables 11 5 — 3 Cash and cash equivalents 96 7 28 5 Other receivables 32 — 1 11 Other non-current 1,428 — — — Trade and other payables (118 ) (12 ) — — Lease liabilities (30,710 ) (10 ) (6 ) (67 ) Borrowings (13 ) (1,957 ) (2,371 ) — 2020 USD EUR SGD JPY RMB million RMB million RMB million RMB million Trade receivables 10 2 — 2 Cash and cash equivalents 968 4 3 3 Other receivables 115 3 1 12 Other non-current 150 — — — Trade and other payables (108 ) (1 ) — — Lease liabilities (36,267 ) (8 ) (85 ) (142 ) Borrowings (375 ) (2,664 ) (2,466 ) (3,162 ) The following tables indicate the approximate change in the Group’s consolidated statement of profit or loss and other comprehensive income in response to a 1% appreciation or depreciation of the RMB against the following major currencies at the reporting date: 2021 2020 Effect on profit or loss Effect on other comprehensive income Effect on profit or loss Effect on other comprehensive income RMB million RMB million RMB million RMB million If RMB (weakens)/strengthens against USD (222 )/ 222 — (266 )/266 — If RMB (weakens)/strengthens Against JPY (0.36 )/0.36 — (25 )/25 — If RMB (weakens)/strengthens Against EUR (15 )/15 — (20 )/20 — If RMB (weakens)/strengthens against SGD (18 )/18 — (19 )/19 — (ii) Interest rate risk The Group’s interest rate risk primarily arises from borrowings and lease liabilities. Borrowings issued at variable rates expose the Group to cash flow interest rate risk. Borrowings and finance leases issued at fixed rates expose the Group to fair value interest rate risk. The Group determines the proportion of borrowings and finance leases issued at variable rates and fixed rates based on the market environment. The Group’s finance department has been monitoring the level of interest rates. The increase in the interest rates will increase the interest costs of borrowings and finance leases issued at variable rates, which will further impact the performance of the Group. To hedge against the variability in the cash flows arising from a change in market interest rates, the Group has entered into certain interest rate swaps to swap variable rates into fixed rates. The interest rates and terms of repayment of borrowings made to the Group and interest rate swaps are disclosed in Notes 37 and 25 to the consolidated financial statements. The following tables detail the interest rate profiles of the Group’s interest-bearing financial instruments at the reporting date: December 31, December 31, RMB million RMB million Floating rate instruments Cash and cash equivalents 12,950 7,651 Restricted bank deposits 12 12 Borrowings (26,146 ) (13,328 ) Lease liabilities (62,406 ) (44,541 ) Interest rate swaps at notional amount 3,154 4,504 December 31, December 31, RMB million RMB million Fixed rate instruments Borrowings (68,943 ) (74,567 ) Lease liabilities (35,584 ) (51,710 ) The following table indicates the approximate change in the Group’s profit or loss and other comprehensive income, taking the interest rate swap into consideration, if interest rate had been 25 basis points higher with all other variables held constant: 2021 2020 Effect on profit or loss Effect on other comprehensive income Effect on profit or loss Effect on other comprehensive income RMB million RMB million RMB RMB million Floating rate instruments (142 ) 6 (94 ) 8 (iii) Fuel price risk Jet fuel is a major component of the Group’s operating expenses and the Group’s results are significantly affected by the volatility in the price of jet fuel. For the year ended December 31, 2021, if fuel price had been 5% lower/higher with all other variables held constant, the Group’s fuel cost would have been RMB1,030 million lower/higher (2020: RMB692 million lower/higher). The Group’s policy is to reduce fuel price risk by hedging a percentage of its expected fuel consumption. Fuel forward contracts are used to achieve the Group’s desired hedging position. An increase of 5 percent in the jet fuel price at the reporting date would have resulted in a change in other comprehensive income by the amounts shown below. It represents the change in fair value of fuel forward contracts at the reporting date. The analysis assumes that all other variables remain constant. 2021 2020 Effect on other comprehensive income Effect on other comprehensive income RMB million RMB million Fuel forward contracts — 62 (b) Credit risk The Group’s credit risk is primarily attributable to cash and cash equivalents, deposits and derivative financial instruments with banks and financial institutions, as well as credit exposures to sales agents. A significant portion of the Group’s air tickets is sold by sales agents participating in the Billing and Settlements Plan (“BSP”), a clearing system between airlines and sales agents organised by the International Air Transportation Association. The balance due from BSP agents amounted to approximately RMB185 million as at December 31, 2021 (2020: approximately RMB165 million). The credit risk exposure to BSP agents and the remaining trade receivables are maintained by the Group on an on-going The Group’s cash management policy is to deposit cash and cash equivalents mainly in state-owned banks and other reputable banks and financial institutions. The Group also deposits cash and cash equivalents in an associate financial institution owned by its holding company (Note 45(c)(iii)). Management does not expect any loss to arise from non-performance Transactions in relation to derivative financial instruments are only carried out with reputable banks and financial institutions. The Group has policies that limit the amount of credit exposure to any bank and financial institution. Management does not expect any losses from non-performance Maximum exposure and year-end The tables below show the credit quality and the maximum exposure to credit risk based on the Group’s credit policy, which is mainly based on past due information unless other information is available without undue cost or effort, and year-end The amounts presented are gross carrying amounts for financial assets and the exposure to credit risk. As at December 31, 2021 12-month Lifetime ECLs Stage 1 Stage 2 Stage 3 Simplified approach Total RMB million RMB million RMB million RMB million RMB million Trade receivable* — — 40 934 974 Financial assets included in prepayments and other receivables - Normal ** 2,202 271 232 — 2,705 Restricted bank deposits - Not yet past due 12 — — — 12 Cash and cash equivalents - Not yet past due 12,950 — — — 12,950 As at December 31, 2020 12-month ECLs Lifetime ECLs Stage 1 Stage 2 Stage 3 Simplified approach Total RMB million RMB million RMB million RMB million RMB million Trade receivable* — — 47 1,077 1,124 Financial assets included in prepayments and other receivables - Normal ** 2,067 274 111 — 2,452 Restricted bank deposits - Not yet past due 12 — — — 12 Cash and cash equivalents - Not yet past due 7,651 — — — 7,651 * For trade receivables to which the Group applies the simplified approach for impairment, information based on the provision matrix is disclosed in notes 29 to the financial statements, respectively. ** The credit quality of the financial assets included in prepayments and other receivables is considered to be “normal” when they are not past due and there is no information indicating that the financial assets had a significant increase in credit risk since initial recognition. Otherwise, the credit quality of the financial assets is considered to be “doubtful”. Further quantitative data in respect of the Group’s exposure to credit risk arising from trade receivables are disclosed in note 29 to the financial statements. Since the Group trades only with recognised and creditworthy third parties, there is no requirement for collateral. Concentrations of credit risk are managed by customer/counterparty, by geographical region and by industry sector. There are no significant concentrations of credit risk within the Group as the customer bases of the Group’s trade receivables are widely dispersed in different sectors and industries. (c) Liquidity risk The Group’s primary cash requirements are for day-to-day The table below analyses the Group’s financial liabilities that will be settled into relevant maturity groupings based on the remaining period at the reporting date to the contractual maturity date. The amounts disclosed in the table are the contractual undiscounted cash flows. Less than 1 year 1 to 2 years 2 to 5 years Over 5 years Total At December 31, 2021 RMB million RMB million RMB million RMB million RMB million Borrowings 46,633 15,668 18,490 22,306 103,097 Derivative financial instruments 1 — 45 — 46 Lease liabilities 19,025 17,320 43,259 31,192 110,796 Trade, bills and other payables 15,939 — — — 15,939 Total 81,598 32,988 61,794 53,498 229,878 Less than 1 year 1 to 2 years 2 to 5 years Over 5 years Total At December 31, 2020 RMB million RMB million RMB million RMB million RMB million Borrowings 58,989 6,946 19,126 7,779 92,840 Derivative financial instruments 3 7 132 — 142 Lease liabilities 17,443 16,009 40,241 37,319 111,012 Trade, bills and other payables 19,010 — — — 19,010 Total 95,445 22,962 59,499 45,098 223,004 (d) Equity price risk The Group is exposed to equity price risk arising from individual equity investments included in financial asset at fair value through profit or loss (Note 30) and equity investments designated at fair value through other comprehensive income (Note 24) as at December 31, 2021. The Group’s listed investments are listed on the Hong Kong and Shanghai stock exchanges and are valued at quoted market prices at the end of the reporting period. The market equity indices for the following stock exchanges, at the close of business of the nearest trading day in the year to the end of the reporting period, and their respective highest and lowest points during the year were as follows: December 31, 2021 High/Low 2021 December 31, 2020 High/Low 2020 Hong Kong - Hang Seng Index 23,398 31,183/22,665 27,231 29,056/21,696 Shanghai - A Share Index 3,640 3,732/3,313 3,640 3,640/2,788 The following table demonstrates the sensitivity to every 10% change in the fair values of the equity investments, with all other variables held constant, based on their carrying amounts at the end of the reporting period. For the purpose of this analysis, for the equity investments at fair value through other comprehensive income, the impact is deemed to be on the fair value reserve as at December 31, 2021. 2021 Carrying amount of equity Increase/ (decrease) in profit or loss Increase/(decrease) in comprehensive income RMB million RMB million RMB million Investments listed in: Hong Kong — Equity investment designated at fair value through other comprehensive income 237 — 18/ (18) Shanghai — Financial asset at fair value through profit or loss 84 6/ (6) — Unlisted investments at fair value: — Equity investment designated at fair value through other comprehensive income 220 — 17/ (17) 2020 Carrying amount of equity Increase/ (decrease) in profit or loss Increase/(decrease) in comprehensive income RMB million RMB million RMB million Investments listed in: Hong Kong — Equity investment designated at fair value through other comprehensive income 457 — 34/ (34) Shanghai — Financial asset at fair value through profit or loss 95 7/ (7) — Unlisted investments at fair value: — Equity investment designated at fair value through other comprehensive income 538 — 40/ (40) 48.2 Capital management The primary objectives of the Group’s capital management are to safeguard the Group’s ability to continue as a going concern and to maintain healthy capital ratios in order to support its business and maximise shareholders’ value. The Group manages its capital structure and makes adjustments to it in light of changes in economic conditions and the risk characteristics of the underlying assets. To maintain or adjust the capital structure, the Group may adjust the dividend payment to shareholders, return capital to shareholders or issue new shares. The Group is not subject to any externally imposed capital requirements. No changes were made in the objectives, policies or processes for managing capital during the years ended December 31, 2021 and December 31, 2020. The Group monitors capital on the basis of the debt ratio, which is calculated as total liabilities divided by total assets. The debt ratios as at the end of the reporting periods were as follows: December 31, December 31, RMB million RMB million Total liabilities 231,638 225,496 Total assets 288,790 284,650 Debt ratio 80 % 79 %

Events occurred after the repor

Events occurred after the reporting period	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Events occurred after the reporting period	49 Events occurred after the reporting period On March 21, 2022, a Boeing 737 passenger aircraft of CEA Yunnan, a subsidiary of the Company, lost contact over Wuzhou, Guangxi while performing a flight from Kunming to Guangzhou. Since the plane crashed, the Company has attached great importance to the incident and immediately activated the emergency response plan. The cause of the plane crash is under investigation. The Company will cooperate with the relevant investigations and continue to evaluate its impact on the financial position and operating results of the Group.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Basis of preparation	2.1 Basis of preparation The accompanying consolidated financial statements have been prepared in accordance with all applicable International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) . They have been prepared under the historical cost convention, except for equity investments designated at fair value through other comprehensive income, financial assets at fair value through profit or loss and derivative financial instruments which have been measured at fair value. These financial statements are presented in Renminbi (“RMB”) and all values are rounded to the nearest million except when otherwise indicated. (i) Going concern In 2021, the Group incurred net loss of RMB13.28 billion. As at December 31, 2021, the Group’s current liabilities exceeded its current assets by approximately RMB 57.98 billion. In preparing the financial statements, the Board has conducted a detailed review over the Group’s going concern ability based on its financial condition and operating results. The Board has also considered the following factors: • Sufficient unutilized banking facilities as at December 31, 2021; • The Group’s sound credit standing and history of cooperation with banks and other financial institutions; and • The Group’s expected net cash inflows from operating activities for not less than 12 months starting from the period end of the financial statements, considering the recovery of flights and the Group’s major operating costs including fuel prices during such period. The Board believes that the Group has sufficient source of financing to enable it to operate, as well as to meet its liabilities as and when they become due, and to support its the capital expenditures in the forseeable future of not less than twelve months starting from the period end of the financial statements. Accordingly, the Board continued to prepare the Group’s financial statements as of and for the year ended December 31, 2021 on a going concern basis. (ii) New and amended standards adopted by the Group The Group has applied the following amendments for the first time for their annual reporting period commencing January 1, 2021: Amendment to IFRS 16 - COVID-19-related The Group has early adopted the amendment to IFRS 16. The Group previously applied the practical expedient in IFRS 16 such that as lessee it was not required to assess whether rent concessions occurring as a direct consequence of the COVID-19 The eligible rent concessions are accounted for as negative variable lease payments, and are recognised in profit or loss in the period in which the event or condition that triggers those payments occurred. There is no impact on the opening balance of equity at January 1 st Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16 - Interest Rate Benchmark Reform - Phase 2 The amendments focus on accounting reliefs once a new benchmark interest rate is in place. The reliefs have the effect that changing the basis for determining contractual cash flows for financial assets, financial liabilities and lease liabilities, that are as a direct consequence of the Inter-Bank Offered Rate (“IBOR”) reform and are economically equivalent, will not result in an immediate gain or loss in the profit or loss. The amendments also provide reliefs to allow hedge accounting to continue when the hedging relationships are directly affected by IBOR reform. The amendments do not have an impact on the current reporting period as the Group has not moved any existing contracts to new benchmark interest rates. In addition, the Group considers that uncertainty remains over the timing and/or amounts of future cash flows indexed to benchmark interest rates and thus the Group continues to apply the existing accounting policies. (iii) New standards and interpretations not yet adopted Certain new accounting standards, amendments to accounting standards and interpretations have been published that are not mandatory for December 31, 2021 reporting periods and have not been early adopted by the Group. These standards, amendments or interpretations are not expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions. Effective for accounting year beginning on or after Amendments to IAS 16 - Property, Plant and Equipment: Proceeds before Intended Use January 1, 2022 Amendments to IFRS 3 - Reference to the Conceptual Framework January 1, 2022 Amendments to IAS 37 - Onerous Contracts — Cost of Fulfilling a Contract January 1, 2022 Annual Improvements to IFRS Standards 2018–2020 January 1, 2022 IFRS 17 - Insurance Contracts January 1, 2023 (deferred from January 1, 2021) Amendments to IAS 1 - Classification of Liabilities as Current or Non-current January 1, 2023 (deferred from January 1, 2022) Amendments to IAS 1 and IFRS Practice Statement 2- Disclosure of Accounting Policies January 1, 2023 Amendments to IAS 8 - Definitions of Accounting Estimates January 1, 2023 Amendments to IAS 12 - Deferred Tax related to Assets and Liabilities arising from a Single Transaction January 1, 2023 Amendments to IFRS 10 and IAS 28 - Sale or Contribution of Assets between an Investor and its Associate or Joint Venture To be determined Certain new accounting standards, amendments to accounting standards and interpretations have been published that are not mandatory for December 31, 2021 reporting periods and have not been early adopted by the Group. These standards, amendments or interpretations are not expected to have a material impact on the entity in the current or future reporting periods and on foreseeable future transactions.
Principles of consolidation	2.2 Principles of consolidation (i) Subsidiaries Subsidiaries are all entities (including structured entities) over which the G The acquisition method of accounting is used to account for business combinations by the Group (refer to note 2.3). Inter-company transactions, balances and unrealised gains on transactions between Group companies are eliminated. Unrealised losses are also eliminated unless the transaction provides evidence of an impairment of the transferred asset. Accounting policies of subsidiaries have been changed where necessary to ensure consistency with the policies adopted by the Group. Non-controlling (ii) Associates Associates are all entities over which the Group has significant influence but not control or joint control. This is generally the case where the Group holds between 20% and 50% of the voting rights. Investments in associates are accounted for using the equity method of accounting (see (iv) below), after initially being recognised at cost. (iii) Joint ventures Interests in joint ventures are accounted for using the equity method (see (iv) below), after initially being recognised at cost in the consolidated balance sheet. (iv) Equity method Under the equity method of accounting, the investments are initially recognised at cost and adjusted thereafter to recognise the Group’s share of the post-acquisition profits or losses of the investee in profit or loss, and the Group’s share of movements in other comprehensive income of the investee in other comprehensive income. Dividends received or receivable from associates and joint ventures are recognised as a reduction in the carrying amount of the investment. Where the Group’s share of losses in an equity-accounted investment equals or exceeds its interest in the entity, including any other unsecured long-term receivables, the Group does not recognise further losses, unless it has incurred obligations or made payments on behalf of the other entity. Unrealised gains on transactions between the Group and its associates and joint ventures are eliminated to the extent of the Group’s interest in these entities. Unrealised losses are also eliminated unless the transaction provides evidence of an impairment of the asset transferred. Accounting policies of equity-accounted investees have been changed where necessary to ensure consistency with the policies adopted by the Group. The carrying amount of equity-accounted investments is tested for impairment in accordance with the policy described in note 2.18. (v) Changes in ownership interests The Group treats transactions with non-controlling non-controlling non-controlling When the Group ceases to consolidate or equity account for an investment because of a loss of control, joint control or significant influence, any retained interest in the entity is remeasured to its fair value, with the change in carrying amount recognised in profit or loss. This fair value becomes the initial carrying amount for the purposes of subsequently accounting for the retained interest as an associate, joint venture or financial asset. In addition, any amounts previously recognised in other comprehensive income in respect of that entity are accounted for as if the Group had directly disposed of the related assets or liabilities. This may mean that amounts previously recognised in other comprehensive income are reclassified to profit or loss. If the ownership interest in a joint venture or an associate is reduced but joint control or significant influence is retained, only a proportionate share of the amounts previously recognised in other comprehensive income are reclassified to profit or loss where appropriate.
Business combinations	2.3 Business combinations The acquisition method of accounting is used to account for all business combinations, regardless of whether equity instruments or other assets are acquired. The consideration transferred for the acquisition of a subsidiary comprises the: • fair values of the assets transferred • liabilities incurred to the former owners of the acquired business • equity interests issued by the Group • fair value of any asset or liability resulting from a contingent consideration arrangement, and • fair value of any pre-existing Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are, with limited exceptions, measured initially at their fair values at the acquisition date. The Group recognises any non-controlling acquisition-by-acquisition non-controlling Acquisition-related costs are expensed as incurred. The excess of the consideration transferred, amount of any non-controlling Where settlement of any part of cash consideration is deferred, the amounts payable in the future are discounted to their present value as at the date of exchange. The discount rate used is the entity’s incremental borrowing rate, being the rate at which a similar borrowing could be obtained from an independent financier under comparable terms and conditions. Contingent consideration is classified either as equity or a financial liability. Amounts classified as a financial liability are subsequently remeasured to fair value, with changes in fair value recognised in profit or loss. If the business combination is achieved in stages, the acquisition date carrying value of the acquirer’s previously held equity interest in the acquiree is remeasured to fair value at the acquisition date. Any gains or losses arising from such remeasurement are recognised in profit or loss.
Separate financial statements	2.4 Separate financial statements Investments in subsidiaries are accounted for at cost less impairment. Cost includes direct attributable costs of investment. The results of subsidiaries are accounted for by the company on the basis of dividend received and receivable. Impairment testing of the investments in subsidiaries is required upon receiving a dividend from these investments if the dividend exceeds the total comprehensive income of the subsidiary in the period the dividend is declared or if the carrying amount of the investment in the separate financial statements exceeds the carrying amount in the consolidated financial statements of the investee’s net assets including goodwill.
Segment reporting	2.5 Segment reporting Operating segments are reported in a manner consistent with the internal reporting provided to the chief operating decision maker(“CODM”). The CODM, who is responsible for allocating resources and assessing performance of the operating segments, has been identified as the office of the General Manager that makes strategic decisions.
Foreign currency translation	2.6 Foreign currency translation (i) Functional and presentation currency Items included in the financial statements of each of the Group’s entities are measured using the currency of the primary economic environment in which the entity operates (the “functional currency”). The financial statements are presented in“RMB”, which is the functional and presentation currency of the Company and the Group’s entities. (ii) Transactions and balances Foreign currency transactions are translated into the functional currency using the exchange rates at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions, and from the translation of monetary assets and liabilities denominated in foreign currencies at year end exchange rates, are generally recognised in profit or loss. They are deferred in equity if they relate to qualifying cash flow hedges and qualifying net investment hedges. Foreign exchange gains and losses that relate to borrowings and cash and cash equivalents are presented in profit or loss within “finance income” or “finance costs”.
Revenue recognition	2.7 Revenue recognition (i) Revenue from contracts with customers Revenue from contracts with customers is recognised when control of goods or services is transferred to the customers at an amount that reflects the consideration to which the Group expects to be entitled in exchange for those goods or services. When the consideration in a contract includes a variable amount, the amount of consideration is estimated to which the Group will be entitled in exchange for transferring the goods or services to the customer. The variable consideration is estimated at contract inception and constrained until it is highly probable that a significant revenue reversal in the amount of cumulative revenue recognised will not occur when the associated uncertainty with the variable consideration is subsequently resolved. When the contract contains a financing component which provides the customer with a significant benefit of financing the transfer of goods or services to the customer for more than one year, revenue is measured at the present value of the amount receivable, discounted using the discount rate that would be reflected in a separate financing transaction between the Group and the customer at contract inception. When the contract contains a financing component which provides the Group with a significant financial benefit for more than one year, revenue recognised under the contract includes the interest expense accreted on the contract liability under the effective interest method. For a contract where the period between the payment by the customer and the transfer of the promised goods or services is one year or less, the transaction price is not adjusted for the effects of a significant financing component, using the practical expedient in IFRS 15. (i) Revenue from contracts with customers (a) Provision of services Traffic revenue Passenger, cargo and mail revenues are recognised as traffic revenue when the transportation is provided or when ticket breakage occurs. The value of sold but unused tickets is included in contract liabilities as sales in advance of carriage (“SIAC”). The Group estimates the value of passenger ticket breakage based on historical trends and experience and recognises revenue at the scheduled flight date. Commission income Commission income represents amounts earned from other carriers in respect of sales made by the Group on their behalf, and is recognised upon ticket sales. Other operations incomes Revenues from the provision of ground services, ticket cancellation services and other travel related services are recognised when the services are rendered. (b) Frequent flyer programme The Group operates a frequent flyer programme called “Eastern Miles” that issues mileage points to program members based on accumulated mileage. Mileage points can be used to redeem for free or discounted goods or tickets until expiration. The frequent flyer programme provides a significant right to the customers and the Group treats it as a separate performance obligation. The Group defers a portion of passenger revenue attributable to the mileage points issued based on the relative stand-alone selling price approach and recognises revenue when the mileage points are redeemed and performance obligations are fulfilled or the mileage points expire unused. The stand-alone selling price of the mileage points was estimated based on the historical prices of equivalent flights and goods provided for mileage points redeemed and was adjusted for mileage points that are not expected to be redeemed (“Breakage”). (c) Sale of goods Revenue from the sale of goods is recognised at the point in time when control of the asset is transferred to the customer. (d) Contract liabilities A contract liability is recognised when a payment is received or a payment is due (whichever is earlier) from a customer before the Group transfers the related goods or services. Contract liabilities are recognised as revenue when the Group performs under the contract (i.e., transfers control of the related goods or services to the customer). (ii) Revenue from other sources Rental income is recognised on a time proportion basis over the lease terms. Variable lease payments that do not depend on an index or a rate are recognised as income in the accounting period in which they are incurred.
Government grants	2.8 Government grants Government grants are recognised at their fair value where there is a reasonable assurance that the grant will be received and the Group will comply with all attached conditions. When the grant relates to an expense item, it is recognised as income on a systematic basis over the periods that the costs, for which it is intended to compensate are expensed. Where the grant relates to an asset, the fair value is credited to a deferred income account and is released to profit or loss over the expected useful life of the relevant asset by equal annual instalments.
Maintenance and overhaul costs	2.9 Maintenance and overhaul costs Overhaul costs that meet specific recognition criteria are capitalised as a component of property, plant and equipment or right-of-use Certain lease arrangements contain provisions for the Group‘s obligations to fulfil certain return conditions at the end of lease term. The Group estimated lease return costs for aircraft and engines and recognised such costs as part of the right-of-use All other repairs and maintenance costs are charged to profit or loss as and when incurred.
Interest income	2.10 Interest income Interest income is calculated by applying the effective interest rate to the gross carrying amount of a financial asset except for financial assets that subsequently become credit-impaired. For credit-impaired financial assets the effective interest rate is applied to the net carrying amount of the financial asset (after deduction of the loss allowance).
Dividend income	2.11 Dividend income Dividends are received from financial assets measured at fair value through profit or loss (FVPL) and at fair value through other comprehensive income (FVOCI). Dividends are recognised as other income in profit or loss when the right to receive payment is established. This applies even if they are paid out of pre-acquisition
Borrowing costs	2.12 Borrowing costs General and specific borrowing costs that are directly attributable to the acquisition, construction or production of a qualifying asset are capitalised during the period of time that is required to complete and prepare the asset for its intended use or sale. Qualifying assets are assets that necessarily take a substantial period of time to get ready for their intended use or sale. Investment income earned on the temporary investment of specific borrowings pending their expenditure on qualifying assets is deducted from the borrowing costs eligible for capitalisation. Other borrowing costs are expensed in the period in which they are incurred.
Income tax	2.13 Income tax Income tax comprises current and deferred tax. Income tax relating to items recognised outside profit or loss is recognised outside profit or loss, either in other comprehensive income or directly in equity. Current tax assets and liabilities are measured at the amount expected to be recovered from or paid to the taxation authorities, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period, taking into consideration interpretations and practices prevailing in the countries in which the Group operates. Deferred tax is provided, using the liability method, on all temporary differences at the end of the reporting period between the tax bases of assets and liabilities and their carrying amounts for financial reporting purposes. Deferred tax liabilities are recognised for all taxable temporary differences, except: (i) when the deferred tax liability arises from the initial recognition of goodwill or an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; and (ii) in respect of taxable temporary differences associated with investments in subsidiaries, associates and joint ventures, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Deferred tax assets are recognised for all deductible temporary differences, and the carryforward of unused tax credits and any unused tax losses. Deferred tax assets are recognised to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carryforward of unused tax credits and unused tax losses can be utilised, except: (i) when the deferred tax asset relating to the deductible temporary differences arises from the initial recognition of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; and (ii) in respect of deductible temporary differences associated with investments in subsidiaries, associates and joint ventures, deferred tax assets are only recognised to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which the temporary differences can be utilised. The carrying amount of deferred tax assets is reviewed at the end of each reporting period and reduced to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be utilised. Unrecognised deferred tax assets are reassessed at the end of each reporting period and are recognised to the extent that it has become probable that sufficient taxable profit will be available to allow all or part of the deferred tax asset to be recovered. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realised or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end of the reporting period. Deferred tax assets and deferred tax liabilities are offset if and only if the Group has a legally enforceable right to set off current tax assets and current tax liabilities and the deferred tax assets and deferred tax liabilities relate to income taxes levied by the same taxation authority on either the same taxable entity or different taxable entities which intend either to settle current tax liabilities and assets on a net basis, or to realise the assets and settle the liabilities simultaneously, in each future period in which significant amounts of deferred tax liabilities or assets are expected to be settled or recovered.
Intangible assets	2.14 Intangible assets (i) Goodwill Goodwill is measured as described in note 2.3. Goodwill on acquisitions of subsidiaries is included in intangible assets. Goodwill is not amortised, but it is tested for impairment annually, or more frequently if events or changes in circumstances indicate that it might be impaired, and is carried at cost less accumulated impairment losses. Gains and losses on the disposal of an entity include the carrying amount of goodwill relating to the entity sold. Goodwill is allocated to cash-generating units for the purpose of impairment testing. The allocation is made to those cash-generating units or groups of cash-generating units that are expected to benefit from the business combination in which the goodwill arose. The units or groups of units are identified at the lowest level at which goodwill is monitored for internal management purposes, being the operating segments (ii) Computer software costs Acquired computer software licences are capitalised on the basis of the costs incurred to acquire and bring to use the specific software. These costs are amortised using the straight-line method over their estimated useful lives of 5 years. Costs associated with developing or maintaining computer software programs are recognised as expenses when incurred.
Deferred pilot recruitment costs	2.15 Deferred pilot recruitment costs Deferred pilot recruitment costs represent the costs borne by the Group in connection with securing a certain minimum period of employment of pilots and are amortised on a straight-line basis over the anticipated beneficial period of 5 years, starting from the date the pilot joins the Group.
Property, plant and equipment	2.16 Property, plant and equipment Property, plant and equipment, other than construction in progress, are stated at cost less accumulated depreciation and any impairment losses. When an item of property, plant and equipment is classified as held for sale or when it is part of a disposal group classified as held for sale, it is not depreciated and is accounted for in accordance with IFRS 5, as further explained in the accounting policy for “Non-current The cost of an item of property, plant and equipment comprises its purchase price and any directly attributable costs of bringing the asset to its working condition and location for its intended use. When each major aircraft overhaul is performed, its cost is recognised in the carrying amount of the item of property, plant and equipment and is depreciated over the appropriate maintenance cycles. Components related to airframe overhaul cost, are depreciated on a straight-line basis over 5 to 7.5 years. Components related to engine overhaul costs, are depreciated between each overhaul period using the ratio of actual flying hours and estimated flying hours between overhauls. Upon completion of an overhaul, any remaining carrying amount of the cost of the previous overhaul is derecognised and charged to profit or loss. Except for components related to overhaul costs, the depreciation method of which has been described in the preceding paragraph, other depreciation of property, plant and equipment is calculated using the straight-line method to write off their costs to their residual values over their estimated useful lives, as follows: Owned aircraft and engines 20 years Other flight equipment, including rotables 10 years Buildings 8 to 35 years Other property, plant and equipment 3 to 20 years Where parts of an item of property, plant and equipment have different useful lives, the cost of that item is allocated on a reasonable basis among the parts and each part is depreciated separately. The assets’ residual values and useful lives are reviewed, and adjusted if appropriate, at the end of each reporting period. An asset’s carrying amount is written down immediately to its recoverable amount if the asset’s carrying amount is greater than its estimated recoverable amount. Gains and losses on disposals are determined by comparing proceeds with carrying amount. These are included in profit or loss. When revalued assets are sold, it is group policy to transfer any amounts included in other reserves in respect of those assets to retained earnings. Construction in progress represents a building under construction, which is stated at cost less any impairment losses, and is not depreciated. Cost comprises the direct costs of construction and capitalised borrowing costs on related borrowed funds during the period of construction. Construction in progress is reclassified to the appropriate category of property, plant and equipment when completed and ready for use.
Investment properties	2.17 Investment properties Investment properties are interests in land and buildings held to earn rental income and/or for capital appreciation, rather than for use in the production or supply of goods or services or for administrative purposes, or for sale in the ordinary course of business. Such properties are measured initially at cost, including related transaction costs. After initial recognition, the Group chooses the cost model to measure all of its investment properties. Depreciation is calculated on the straight-line basis to write off the cost to its residual value over its estimated useful life. The estimated useful lives are as follows: Buildings 20 to 35 years The carrying amounts of investment properties measured using the cost method are reviewed for impairment when events or changes in circumstances indicate that the carrying amounts may not be recoverable. Any gains or losses on the retirement or disposal of an investment property are recognised in profit or loss in the year of the retirement or disposal.
Impairment of non-financial assets	2.18 Impairment of non-financial Goodwill and intangible assets that have an indefinite useful life are not subject to amortisation and are tested annually for impairment, or more frequently if events or changes in circumstances indicate that they might be impaired. Other assets are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment loss is recognised for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s fair value less costs of disposal and value in use. For the purposes of assessing impairment, assets are grouped at the lowest levels for which there are separately identifiable cash inflows which are largely independent of the cash inflows from other assets or groups of assets (cash-generating units). Non-financial
Non-current assets and disposal groups held for sale	2.19 Non-current Non-current Non-current
Advanced payments on acquisition of aircraft	2.20 Advanced payments on acquisition of aircraft Advanced payments on acquisition of aircraft represent payments to aircraft manufacturers to secure deliveries of aircraft in future years, including attributable borrowing costs, and are included in non-current
Flight equipment spare parts	2.21 Flight equipment spare parts Flight equipment spare parts are stated at the lower of cost and net realisable value. Cost is determined using the weighted average method. The cost of flight equipment spare parts comprises the purchase price (net of discounts), freight charges, duty and other miscellaneous charges. Net realisable value is the estimated selling price of the flight equipment spare parts in the ordinary course of business, less applicable selling expenses.
Investments and other financial assets	2.22 Investments and other financial assets (i) Initial recognition and measurement Financial assets are classified, at initial recognition, as subsequently measured at amortised cost, fair value through other comprehensive income, and fair value through profit or loss. The classification of financial assets at initial recognition depends on the financial asset’s contractual cash flow characteristics and the Group’s business model for managing them. With the exception of trade receivables that do not contain a significant financing component or for which the Group has applied the practical expedient of not adjusting the effect of a significant financing component, the Group initially measures a financial asset at its fair value, plus in the case of a financial asset not at fair value through profit or loss, transaction costs. Trade receivables that do not contain a significant financing component or for which the Group has applied the practical expedient are measured at the transaction price determined under IFRS 15 in accordance with the policies set out for “Revenue recognition”. In order for a financial asset to be classified and measured at amortised cost or fair value through other comprehensive income, it needs to give rise to cash flows that are solely payments of principal and interest (“SPPI”) on the principal amount outstanding. Financial assets with cash flows that are not SPPI are classified and measured at fair value through profit or loss, irrespective of the business model. The Group’s business model for managing financial assets refers to how it manages its financial assets in order to generate cash flows. The business model determines whether cash flows will result from collecting contractual cash flows, selling the financial assets, or both. Financial assets classified and measured at amortised cost are held within a business model with the objective to hold financial assets in order to collect contractual cash flows, while financial assets classified and measured at fair value through other comprehensive income are held within a business model with the objective of both holding to collect contractual cash flows and selling. Financial assets which are not held within the aforementioned business models are classified and measured at fair value through profit or loss. All regular way purchases and sales of financial assets are recognised on the trade date, that is, the date that the Group commits to purchase or sell the asset. Regular way purchases or sales are purchases or sales of financial assets that require delivery of assets within the period generally established by regulation or convention in the marketplace. (ii) Subsequent measurement The subsequent measurement of financial assets depends on their classification as follows: Financial assets at amortised cost (debt instruments) Financial assets at amortised cost are subsequently measured using the effective interest method and are subject to impairment. Gains and losses are recognised in the statement of profit or loss when the asset is derecognised, modified or impaired. Financial assets at fair value through other comprehensive income (debt instruments) For debt investments at fair value through other comprehensive income, interest income, foreign exchange revaluation and impairment losses or reversals are recognised in the statement of profit or loss and computed in the same manner as for financial assets measured at amortised cost. The remaining fair value changes are recognised in other comprehensive income. Upon derecognition, the cumulative fair value change recognised in other comprehensive income is recycled to the statement of profit or loss. Financial assets designated at fair value through other comprehensive income (equity investments) Upon initial recognition, the Group can elect to classify irrevocably its equity investments as equity investments designated at fair value through other comprehensive income when they meet the definition of equity under IAS 32 Financial Instruments: Presentation and are not held for trading. The classification is determined on an instrument-by-instrument Gains and losses on these financial assets are never recycled to the statement of profit or loss. Dividends are recognised as other income in the statement of profit or loss when the right of payment has been established, it is probable that the economic benefits associated with the dividend will flow to the Group and the amount of the dividend can be measured reliably, except when the Group benefits from such proceeds as a recovery of part of the cost of the financial asset, in which case such gains are recorded in other comprehensive income. Equity investments designated at fair value through other comprehensive income are not subject to impairment assessment. Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss are carried in the statement of financial position at fair value with net changes in fair value recognised in the statement of profit or loss. This category includes derivative instruments and equity investments which the Group had not irrevocably elected to classify at fair value through other comprehensive income. Dividends on equity investments classified as financial assets at fair value through profit or loss are also recognised as other income in the statement of profit or loss when the right of payment has been established, it is probable that the economic benefits associated with the dividend will flow to the Group and the amount of the dividend can be measured reliably. A derivative embedded in a hybrid contract, with a financial liability or non-financial A derivative embedded within a hybrid contract containing a financial asset host is not accounted for separately. The financial asset host together with the embedded derivative is required to be classified in its entirety as a financial asset at fair value through profit or loss. (iii) Derecognition of financial assets A financial asset (or, where applicable, a part of a financial asset or part of a group of similar financial assets) is primarily derecognised (i.e., removed from the Group’s consolidated statement of financial position) when: (i) the rights to receive cash flows from the asset have expired; or (ii) the Group has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a “pass-through” arrangement; and either (a) the Group has transferred substantially all the risks and rewards of the asset, or (b) the Group has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset. When the Group has transferred its rights to receive cash flows from an asset or has entered into a pass-through arrangement, it evaluates if, and to what extent, it has retained the risk and rewards of ownership of the asset. When it has neither transferred nor retained substantially all the risks and rewards of the asset nor transferred control of the asset, the Group continues to recognise the transferred asset to the extent of the Group’s continuing involvement. In that case, the Group also recognises an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Group has retained. Continuing involvement that takes the form of a guarantee over the transferred asset is measured at the lower of the original carrying amount of the asset and the maximum amount of consideration that the Group could be required to repay. (iv) Impairment The Group recognises an allowance for expected credit losses (“ECLs”) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Group expects to receive, discounted at an approximation of the original effective interest rate. The expected cash flows will include cash flows from the sale of collateral held or other credit enhancements that are integral to the contractual terms. General approach ECLs are recognised in two stages. For credit exposures for which there has not been a significant increase in credit risk since initial recognition, ECLs are provided for credit losses that result from default events that are possible within the next 12 months (a 12-month At each reporting date, the Group assesses whether the credit risk on a financial instrument has increased significantly since initial recognition. When making the assessment, the Group compares the risk of a default occurring on the financial instrument as at the reporting date with the risk of a default occurring on the financial instrument as at the date of initial recognition and considers reasonable and supportable information that is available without undue cost or effort, including historical and forwardlooking information. The Group considers a financial asset in default when contractual payments are past due. However, in certain cases, the Group may also consider a financial asset to be in default when internal or external information indicates that the Group is unlikely to receive the outstanding contractual amounts in full before taking into account any credit enhancements held by the Group. A financial asset is written off when there is no reasonable expectation of recovering the contractual cash flows. Debt investments at fair value through other comprehensive income and financial assets at amortised cost are subject to impairment under the general approach and they are classified within the following stages for measurement of ECLs except for trade receivables and contract assets which apply the simplified approach as detailed below. Stage 1 — Financial instruments for which credit risk has not increased significantly since initial recognition and for which the loss allowance is measured at an amount equal to 12-month Stage 2 — Financial instruments for which credit risk has increased significantly since initial recognition but that are not credit-impaired financial assets and for which the loss allowance is measured at an amount equal to lifetime ECLs Stage 3 — Financial assets that are credit-impaired at the reporting date (but that are not purchased or originated credit impaired) and for which the loss allowance is measured at an amount equal to lifetime ECLs Simplified approach For trade receivables and contract assets that do not contain a significant financing component or when the Group applies the practical expedient of not adjusting the effect of a significant financing component, the Group applies the simplified approach in calculating ECLs. Under the simplified approach, the Group does not track changes in credit risk, but instead recognises a loss allowance based on lifetime ECLs at each reporting date. The Group has established a provision matrix that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment.
Financial liabilities	2.23 Financial liabilities (i) Initial recognition and measurement Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, payables, or as derivatives designated as hedging instruments in an effective hedge, as appropriate. All financial liabilities are recognised initially at fair value and, in the case of loans and borrowings and payables, net of directly attributable transaction costs. The Group’s financial liabilities include trade and other payables, derivative financial instruments, lease liabilities, interest-bearing bank and other borrowings. (ii) Subsequent measurement The subsequent measurement of financial liabilities depends on their classification as follows: Financial liabilities at amortised cost After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortised cost, using the effective interest rate method unless the effect of discounting would be immaterial, in which case they are stated at cost. Gains and losses are recognised in the statement of profit or loss when the liabilities are derecognised as well as through the effective interest rate amortisation process. Amortised cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the effective interest rate. The effective interest rate amortisation is included in finance costs in the statement of profit or loss. (iii) Derecognition of financial liabilities A financial liability is derecognised when the obligation under the liability is discharged or cancelled, or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, such an exchange or modification is treated as a derecognition of the original liability and a recognition of a new liability, and the difference between the respective carrying amounts is recognised in the statement of profit or loss.
Offsetting of financial instruments	2.24 Offsetting of financial instruments Financial assets and financial liabilities are offset and the net amount is reported in the statement of financial position if there is a currently enforceable legal right to offset the recognised amounts and there is an intention to settle on a net basis, or to realise the assets and settle the liabilities simultaneously.
Derivatives and hedging activities	2.25 Derivatives and hedging activities Initial recognition and subsequent measurement The Group uses derivative financial instruments, such as forward currency contracts, interest rate swaps and fuel forward contracts, to hedge its foreign currency risk, interest rate risk and fuel price risk, respectively. Such derivative financial instruments are initially recognised at fair value on the date on which a derivative contract is entered into and are subsequently remeasured at fair value. Derivatives are carried as assets when the fair value is positive and as liabilities when the fair value is negative. The fair value of commodity purchase contracts that meet the definition of a derivative as defined by IFRS 9 is recognised in the statement of profit or loss as cost of sales. Commodity contracts that are entered into and continue to be held for the purpose of the receipt or delivery of a non-financial Any gains or losses arising from changes in fair value of derivatives are taken directly to the statement of profit or loss, except for the effective portion of cash flow hedges, which is recognised in other comprehensive income and later reclassified to profit or loss when the hedged item affects profit or loss. For the purpose of hedge accounting, hedges are classified as: • fair value hedges when hedging the exposure to changes in the fair value of a recognised asset or liability or an unrecognised firm commitment; or • cash flow hedges when hedging the exposure to variability in cash flows that is either attributable to a particular risk associated with a recognised asset or liability or a highly probable forecast transaction, or a foreign currency risk in an unrecognised firm commitment; or • hedges of a net investment in a foreign operation. At the inception of a hedge relationship, the Group formally designates and documents the hedge relationship to which the Group wishes to apply hedge accounting, the risk management objective and its strategy for undertaking the hedge. The documentation includes identification of the hedging instrument, the hedged item, the nature of the risk being hedged and how the Group will assess whether the hedging relationship meets the hedge effectiveness requirements (including the analysis of sources of hedge ineffectiveness and how the hedge ratio is determined). A hedging relationship qualifies for hedge accounting if it meets all of the following effectiveness requirements: • There is “an economic relationship” between the hedged item and the hedging instrument. • The effect of credit risk does not “dominate the value changes” that result from that economic relationship. Hedges which meet all the qualifying criteria for hedge accounting are accounted for as follows: (i) Cash flow hedges The effective portion of the gain or loss on the hedging instrument is recognised directly in other comprehensive income in the cash flow hedge reserve, while any ineffective portion is recognised immediately in the statement of profit or loss. The cash flow hedge reserve is adjusted to the lower of the cumulative gain or loss on the hedging instrument and the cumulative change in fair value of the hedged item. The amounts accumulated in other comprehensive income are accounted for, depending on the nature of the underlying hedged transaction. If the hedged transaction subsequently results in the recognition of a non-financial non-financial non-financial For any other cash flow hedges, the amount accumulated in other comprehensive income is reclassified to the statement of profit or loss as a reclassification adjustment in the same period or periods during which the hedged cash flows affect the statement of profit or loss. If cash flow hedge accounting is discontinued, the amount that has been accumulated in other comprehensive income must remain in accumulated other comprehensive income if the hedged future cash flows are still expected to occur. Otherwise, the amount will be immediately reclassified to the statement of profit or loss as a reclassification adjustment. After the discontinuation, once the hedged cash flow occurs, any amount remaining in accumulated other comprehensive income is accounted for depending on the nature of the underlying transaction as described above. (ii) Fair value hedges The change in the fair value of a hedging instrument is recognised in the statement of profit or loss as other expenses. The change in the fair value of the hedged item attributable to the risk hedged is recorded as a part of the carrying amount of the hedged item and is also recognised in the statement of profit or loss as other expenses. For fair value hedges relating to items carried at amortised cost, the adjustment to carrying value is amortised through the statement of profit or loss over the remaining term of the hedge using the effective interest rate method. Effective interest rate amortisation may begin as soon as an adjustment exists and shall begin no later than when the hedged item ceases to be adjusted for changes in its fair value attributable to the risk being hedged. If the hedged item is derecognised, the unamortised fair value is recognised immediately in the statement of profit or loss. When an unrecognised firm commitment is designated as a hedged item, the subsequent cumulative change in the fair value of the firm commitment attributable to the hedged risk is recognised as an asset or liability with a corresponding gain or loss recognised in the statement of profit or loss. The changes in the fair value of the hedging instrument are also recognised in the statement of profit or loss. Current versus non-current Derivative instruments that are not designated as effective hedging instruments are classified as current or non-current non-current • Where the Group expects to hold a derivative as an economic hedge (and does not apply hedge accounting) for a period beyond 12 months after the end of the reporting period, the derivative is classified as non-current non-current • Embedded derivatives that are not closely related to the host contract are classified consistently with the cash flows of the host contract. • Derivative instruments that are designated as, and are effective hedging instruments, are classified consistently with the classification of the underlying hedged item. The derivative instruments are separated into current portions and non-current • The hedge ratio of the hedging relationship is the same as that resulting from the quantity of the hedged item that the Group actually hedges and the quantity of the hedging instrument that the Group actually uses to hedge that quantity of hedged item.
Trade receivables	2.26 Trade receivables Trade receivables are amounts due from customers for goods sold or services performed in the ordinary course of business. They are generally due for settlement within 30 days and therefore all classified as current. Trade receivables are recognised initially at the amount of consideration that is unconditional unless they contain significant financing components, when they are recognised at fair value. The Group holds the trade receivables with the objective of collecting the contractual cash flows and therefore measures them subsequently at amortised cost using the effective interest method. See note 29 for further information about the Group’s accounting for trade receivables and note 48.1 for a description of the Group’s impairment policies.
Cash and cash equivalents	2.27 Cash and cash equivalents For the purpose of the consolidated statement of cash flows, cash and cash equivalents comprise cash on hand and demand deposits, and short term highly liquid investments that are readily convertible into known amounts of cash, are subject to an insignificant risk of changes in value, and have a short maturity of generally within three months when acquired, less bank overdrafts which are repayable on demand and form an integral part of the Group’s cash management. For the purpose of the consolidated statement of financial position, cash and cash equivalents comprise cash on hand and at banks, including assets similar in nature to cash, which are not restricted as to use.
Borrowings	2.28 Borrowings Borrowings are initially recognised at fair value, net of transaction costs incurred. Borrowings are subsequently measured at amortised cost. Any difference between the proceeds (net of transaction costs) and the redemption amount is recognised in profit or loss over the period of the borrowings using the effective interest method. Fees paid on the establishment of loan facilities are recognised as transaction costs of the loan to the extent that it is probable that some or all of the facility will be drawn down. In this case, the fee is deferred until the draw-down occurs. To the extent there is no evidence that it is probable that some or all of the facility will be drawn down, the fee is capitalised as a prepayment for liquidity services and amortised over the period of the facility to which it relates. Borrowings are removed from the balance sheet when the obligation specified in the contract is discharged, cancelled or expired. The difference between the carrying amount of a financial liability that has been extinguished or transferred to another party and the consideration paid, including any non-cash assets transferred or liabilities assumed, is recognised in profit or loss as finance costs. Borrowings are classified as current liabilities unless the Group has an unconditional right to defer settlement of the liability for at least 12 months after the reporting period.
Provisions	2.29 Provisions A provision is recognised when a present obligation (legal or constructive) has arisen as a result of a past event and it is probable that a future outflow of resources will be required to settle the obligation, provided that a reliable estimate can be made of the amount of the obligation. Where there are a number of similar obligations, the likelihood that an outflow will be required in settlement is determined by considering the class of obligations as a whole. A provision is recognised even if the likelihood of an outflow with respect to any one item included in the same class of obligations may be small. Provisions are measured at the present value of management’s best estimate of the expenditure required to settle the present obligation at the end of the reporting period. The discount rate used to determine the present value is a pre-tax For the contract under which the unavoidable costs of meeting the obligations under the contract exceed the economic benefits expected to be received under it, the present obligation under the contract is recognised and measured as a provision.
Leases	2.30 Leases The Group assesses at contract inception whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. (i) As lessee Lease terms are negotiated on an individual basis and contain a wide range of different terms and conditions. The lease agreements do not impose any covenants other than the security interests in the leased assets that are held by the lessor. Leased assets may not be used as security for borrowing purposes. Leases are recognised as a right-of-use Contracts may contain both lease and non-lease non-lease Assets and liabilities arising from a lease are initially measured on a present value basis. Lease liabilities include the net present value of the following lease payments: • fixed payments (including in-substance • variable lease payment that are based on an index or a rate, initially measured using the index or rate as at the commencement date • amounts expected to be payable by the Group under residual value guarantees • the exercise price of a purchase option if the Group is reasonably certain to exercise that option, and • payments of penalties for terminating the lease, if the lease term reflects the Group exercising that option. Lease payments to be made under reasonably certain extension options are also included in the measurement of the liability. The lease payments are discounted using the interest rate implicit in the lease. If that rate cannot be readily determined, which is generally the case for leases in the Group, the lessee’s incremental borrowing rate is used, being the rate that the individual lessee would have to pay to borrow the funds necessary to obtain an asset of similar value to the right-of-use To determine the incremental borrowing rate, the Group: • where possible, uses recent third-party financing received by the individual lessee as a starting point, adjusted to reflect changes in financing conditions since third party financing was received • uses a build-up • makes adjustments specific to the lease, e.g., term, country, currency and security. If a readily observable amortising loan rate is available to the individual lessee (through recent financing or market data) which has a similar payment profile to the lease, then the Group entities use that rate as a starting point to determine the incremental borrowing rate. The Group is exposed to potential future increases in variable lease payments based on an index or rate, which are not included in the lease liability until they take effect. When adjustments to lease payments based on an index or rate take effect, the lease liability is reassessed and adjusted against the right-of-use Lease payments are allocated between principal and finance cost. The finance cost is charged to profit or loss over the lease period so as to produce a constant periodic rate of interest on the remaining balance of the liability for each period. Right-of-use right-of-use • the amount of the initial measurement of lease liability • any lease payments made at or before the commencement date less any lease incentives received • any initial direct costs, and • restoration costs. Except for engine overhaul costs are depreciated between each overhaul period using the ratio of actual flying hours and estimated flying hours between overhauls, right-of-use Aircraft and engines under leases 5 to 20 years Buildings 2 to 10 years Prepayments for land use rights 40 to 50 years Others 2 to 5 years If the Group is reasonably certain to exercise a purchase option, the right-of-use The Group applies the short-term lease recognition exemption to its short-term leases (that is those leases that have a lease term of 12 months or less from the commencement date and do not contain a purchase option). It also applies the recognition exemption for leases of low-value low-value (ii) As lessor When the Group acts as a lessor, it classifies at lease inception (or when there is a lease modification) each of its leases as either an operating lease or a finance lease. Leases in which the Group does not transfer substantially all the risks and rewards incidental to ownership of an asset are classified as operating leases. When a contract contains lease and non-lease Leases that transfer substantially all the risks and rewards incidental to ownership of an underlying asset to the lessee are accounted for as finance leases. (iii) Sales and leaseback The Group applies the requirements for determining when a performance obligation is satisfied in IFRS15 to determine whether the transfer of an asset is accounted for as a sale of that asset. As seller-lessee If the transfer of an asset by the seller-lessee satisfies the requirements of IFRS15 to be accounted for as a sale of the asset, the Group measures the right-of-use asset arising from the leaseback at the proportion of the previous carrying amount of the asset that relates to the right of use retained by the seller-lessee. Accordingly, the Group recognises only the amount of any gain or loss that relates to the rights transferred to the buyer-lessor. If the fair value of the consideration for the sale of an asset does not equal the fair value of the asset, or if the payments for the lease are not at market rates, the Group makes the following adjustments to measure the sale proceeds at fair value: a) any below-market terms shall be accounted for as a prepayment of lease payments; and b) any above-market terms shall be accounted for as additional financing provided by the buyer-lessor to the seller-lessee. The potential adjustment required is measured on the basis of the more readily determinable of: a) the difference between the fair value of the consideration for the sale and the fair value of the asset; and b) the difference between the present value of the contractual payments for the lease and the present value of payments for the lease at market rates. If the transfer of an asset by the seller-lessee does not satisfy the requirements of IFRS15 to be accounted for as a sale of the asset, the Group continues to recognise the transferred asset and recognises a financial liability equal to the transfer proceeds. It shall account for the financial liability applying IFRS 9.
Retirement benefits	2.31 Retirement benefits (i) Defined contribution plans The Group participates in schemes regarding pension and medical benefits for employees organised by the municipal governments of the relevant provinces. Contributions to these schemes are expensed as incurred. The Group also implements an additional defined contribution pension benefit scheme (annuity) for voluntary eligible employees. Contributions are made based on a percentage of the employees’ total salaries and are charged to profit or loss as incurred. (ii) Defined benefit plan The Group provides eligible retirees with certain post-retirement benefits including retirement subsidies, transportation allowance as well as other welfare. The defined post-retirement benefits are unfunded. The cost of providing benefits under the post-retirement benefit plan is determined using the projected unit credit actuarial valuation method. Remeasurements arising from the post-retirement benefit plan, comprising actuarial gains and losses, the effect of the asset ceiling (excluding net interest) and the return on plan assets (excluding net interest), are recognised immediately in the consolidated statement of financial position with a corresponding debit or credit to equity through other comprehensive income in the period in which they occur. Remeasurements are not reclassified to profit or loss in subsequent periods. Past service costs are recognised in profit or loss at the earlier of: • the date of the plan amendment or curtailment; and • the date that the Group recognises restructuring-related costs Net interest is calculated by applying the discount rate to the net defined benefit liability or asset. The Group recognises the following changes in the net defined benefit obligation under “Wages, salaries and benefits” and “Finance costs” in profit or loss: • service costs comprising current service costs, past-service costs, gains and losses on curtailments and non-routine • net interest expense
Dividend distribution	2.32 Dividend distribution Dividend distribution to the Company’s shareholders is recognised as a liability in the consolidated financial statements in the period in which the dividends are approved by the Company’s shareholders. Proposed final dividends are disclosed in the notes to the consolidated financial statements.
Fair value measurement	2.33 Fair value measurement The Group measures its derivative financial instruments and equity investments at fair value at the end of each reporting period. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value measurement is based on the presumption that the transaction to sell the asset or transfer the liability takes place either in the principal market for the asset or liability, or in the absence of a principal market, in the most advantageous market for the asset or liability. The principal or the most advantageous market must be accessible by the Group. The fair value of an asset or a liability is measured using the assumptions that market participants would use when pricing the asset or liability, assuming that market participants act in their economic best interest. A fair value measurement of a non-financial The Group uses valuation techniques that are appropriate in the circumstances and for which sufficient data are available to measure fair value, maximizing the use of relevant observable inputs and minimizing the use of unobservable inputs. All assets and liabilities for which fair value is measured or disclosed in the financial statements are categorized within the fair value hierarchy, described as follows, based on the lowest level input that is significant to the fair value measurement as a whole: Level 1 – based on quoted prices (unadjusted) in active markets for identical assets or liabilities Level 2 – based on valuation techniques for which the lowest level input that is significant to the fair value measurement is observable, either directly or indirectly Level 3 – based on valuation techniques for which the lowest level input that is significant to the fair value measurement is unobservable For assets and liabilities that are recognized in the financial statements on a recurring basis, the Group determines whether transfers have occurred between levels in the hierarchy by reassessing categorization (based on the lowest level input that is significant to the fair value measurement as a whole) at the end of each reporting period.
Share capital	2.34 Share capital Ordinary shares are classified as equity. Incremental costs directly attributable to the issue of new shares or options are shown in equity as a deduction, net of tax, from the proceeds.
Research and development	2.35 Research and development Research expenditures are recognised as expenses as incurred. Costs incurred on development projects are capitalised as intangible assets when recognition criteria are met, including: • it is technically feasible to complete the software so that it will be available for use • management intends to complete the software and use or sell it • there is an ability to use or sell the software • it can be demonstrated how the software will generate probable future economic benefits • adequate technical, financial and other resources to complete the development and to use or sell the software are available, and • the expenditure attributable to the software during its development can be reliably measured. Other development costs that do not meet those criteria are expensed as incurred. Development costs previously recognised as an expense are not recognised as an asset in a subsequent period.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Property, Plant and Equipment Estimated Useful Lives	Except for components related to overhaul costs, the depreciation method of which has been described in the preceding paragraph, other depreciation of property, plant and equipment is calculated using the straight-line method to write off their costs to their residual values over their estimated useful lives, as follows: Owned aircraft and engines 20 years Other flight equipment, including rotables 10 years Buildings 8 to 35 years Other property, plant and equipment 3 to 20 years
Summary of Investment Property Estimated Useful Lives	Depreciation is calculated on the straight-line basis to write off the cost to its residual value over its estimated useful life. The estimated useful lives are as follows: Buildings 20 to 35 years
Summay of estimated useful lives of the assets under right of use assets	Except for engine overhaul costs are depreciated between each overhaul period using the ratio of actual flying hours and estimated flying hours between overhauls, right-of-use Aircraft and engines under leases 5 to 20 years Buildings 2 to 10 years Prepayments for land use rights 40 to 50 years Others 2 to 5 years

Operating Segment Information (

Operating Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Segment Results	The segment results for the year ended December 31, 2021 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million Segment revenue Reportable segment revenue from external customers 66,812 315 — — 67,127 Inter-segment sales — 1,006 (1,006 ) — — Reportable segment revenue 66,812 1,321 (1,006 ) — 67,127 Reportable segment loss before income tax (17,889 ) 374 — 2 (17,513 ) Other segment information Depreciation and amortisation 22,441 277 — — 22,718 Impairment charges/impairment losses on financial assets, net 48 2 — — 50 Interest income 354 — (15 ) — 339 Interest expenses 5,811 16 (15 ) — 5,812 Capital expenditure 30,846 169 — — 31,015 The segment results for year ended December 31, 2020 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million Segment revenue Reportable segment revenue from external customers 58,337 302 — — 58,639 Inter-segment sales — 1,499 (1,499 ) — — Reportable segment revenue 58,337 1,801 (1,499 ) — 58,639 Reportable segment loss before income tax (17,062 ) 684 — (103 ) (16,481 ) Other segment information Depreciation and amortisation 21,965 283 — — 22,248 Impairment charges/impairment losses on financial assets, net 215 1 — — 216 Interest income 178 1 (13 ) — 166 Interest expenses 5,212 15 (13 ) — 5,214 Capital expenditure 17,778 639 — — 18,417 The segment results for year ended December 31, 2019 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million Segment revenue Reportable segment revenue from external customers 119,240 1,620 — — 120,860 Inter-segment sales — 2,052 (2,052 ) — — Reportable segment revenue 119,240 3,672 (2,052 ) — 120,860 Reportable segment profit before income tax 2,745 1,164 — 393 4,302 Other segment information Depreciation and amortisation 21,816 261 — — 22,077 Impairment charges/impairment losses on financial assets, net 20 — — — 20 Interest income 108 1 (13 ) — 96 Interest expenses 5,152 30 (13 ) — 5,169 Capital expenditure 42,853 303 — — 43,156 The segment assets and liabilities as at December 31, 2021 and December 31, 2020 were as follows: Airline transportation Other Eliminations Unallocated* Total RMB million RMB million RMB million RMB million RMB million At December 31, 2021 Reportable segment assets 280,976 4,376 (1,606 ) 2,802 286,548 Reportable segment liabilities 230,799 2,398 (1,606 ) 47 231,638 At December 31, 2020 Reportable segment assets 275,028 5,510 (1,736 ) 3,606 282,408 Reportable segment liabilities 224,862 2,228 (1,736 ) 142 225,496 * Unallocated assets primarily represent investments in associates and joint ventures, derivative financial instruments, financial asset at fair value through profit or loss and equity instruments designated at fair value through other comprehensive income. Unallocated results primarily represent the share of results of associates and joint ventures, fair value changes of financial asset at fair value through profit or loss and dividend income relating to equity investments at fair value through profit or loss.
Summary of Revenues by Geographical Area	2021 2020 2019 RMB million RMB million RMB million Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 56,133 45,479 80,058 International 10,553 12,759 37,082 Regional (Hong Kong, Macau and Taiwan) 441 489 3,846 67,127 58,727 120,986
Summary of Reconciliation of Reportable Segment Revenues, (Loss)/Profit and Assets	Year ended December 31, 2021 2020 2019 Note RMB million RMB million RMB million Revenue Reportable segment revenue 67,127 58,639 120,860 —   Reclassification of taxes relating to the expired tickets (i ) — 88 126 Consolidated revenue 67,127 58,727 120,986 Year ended December 31, 2021 2020 2019 Note RMB million RMB million RMB million (Loss)/profit before income tax Reportable segment (loss)/profit (17,513 ) (16,481 ) 4,302 — Differences in depreciation charges for aircraft and engines (ii ) — (7 ) (3 ) Consolidated (loss)/profit before income tax (17,513 ) (16,488 ) 4,299 As at December 31, 2021 2020 Note RMB RMB Assets Reportable segment assets 286,548 282,408 — Differences in depreciation charges for aircraft and engines due to different depreciation lives (ii ) — — — Difference in intangible asset arising from the acquisition of Shanghai Airlines (iii ) 2,242 2,242 Consolidated assets 288,790 284,650 (i) The difference represents the different classification of sales related taxes under the PRC Accounting Standards and IFRSs. (ii) The difference is attributable to the differences in the useful lives and residual values of aircraft and engines adopted for depreciation purposes in prior years under the PRC Accounting Standards and IFRSs. Despite the depreciation policies of these assets which have been unified under IFRSs and the PRC Accounting Standards in recent years, the changes were applied prospectively as changes in accounting estimates which result in the differences in the carrying amounts and related depreciation charges under IFRSs and the PRC Accounting Standards. (iii) The difference represents the different measurement of the fair value of acquisition cost of the shares from Shanghai Airlines between the PRC Accounting standards and IFRSs, which results in the different measurement of goodwill.

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Revenue	An analysis of revenue is as follows: Year ended December 31, 2021 2020 2019 RMB million RMB million RMB million Revenue from contracts with customers 66,887 58,470 120,796 Revenue from other sources — Rental income 240 257 190 67,127 58,727 120,986 (a) Disaggregated revenue information for revenue from contracts with customers: For the year ended December 31, 2021 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Types of goods or services Traffic revenues — Passenger 54,105 — 54,105 — Cargo and mail 8,309 — 8,309 Ticket cancellation and commission service 2,115 — 2,115 Ground service income 756 — 756 Others 1,287 315 1,602 Total revenue from contracts with customers 66,572 315 66,887 Geographical markets Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 55,578 315 55,893 International 10,553 — 10,553 Regional (Hong Kong, Macau and Taiwan) 441 — 441 Total revenue from contracts with customers 66,572 315 66,887 For the year ended December 31, 2020 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Types of goods or services Traffic revenues — Passenger 49,215 — 49,215 — Cargo and mail 4,895 — 4,895 Ticket cancellation and commission service 2,206 — 2,206 Ground service income 818 — 818 Others 1,034 302 1,336 Total revenue from contracts with customers 58,168 302 58,470 Geographical markets Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 44,920 302 45,222 International 12,759 — 12,759 Regional (Hong Kong, Macau and Taiwan) 489 — 489 Total revenue from contracts with customers 58,168 302 58,470 For the year ended December 31, 2019 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Types of goods or services Traffic revenues — Passenger 110,416 — 110,416 — Cargo and mail 3,826 — 3,826 Ticket cancellation and commission service 2,485 — 2,485 Ground service income 1,180 — 1,180 Others 1,269 1,620 2,889 Total revenue from contracts with customers 119,176 1,620 120,796 Geographical markets Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) 78,248 1,620 79,868 International 37,082 — 37,082 Regional (Hong Kong, Macau and Taiwan) 3,846 — 3,846 Total revenue from contracts with customers 119,176 1,620 120,796 Set out below is the reconciliation of the revenue from contracts with customers to the amounts disclosed in the segment information: For the year ended December 31, 2021 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Revenue from contracts with customers External customers 66,572 315 66,887 Intersegment sales — 1,006 1,006 Intersegment adjustment and eliminations — (1,006 ) (1,006 ) Total revenue from contracts with customers 66,572 315 66,887 For the year ended December 31, 2020 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Revenue from contracts with customers External customers 58,168 302 58,470 Intersegment sales — 1,499 1,499 Intersegment adjustment and eliminations — (1,499 ) (1,499 ) Total revenue from contracts with customers 58,168 302 58,470 For the year ended December 31, 2019 Airline transportation Others Segments operations operations Total RMB million RMB million RMB million Revenue from contracts with customers External customers 119,176 1,620 120,796 Intersegment sales — 2,052 2,052 Intersegment adjustment and eliminations — (2,052 ) (2,052 ) Total revenue from contracts with customers 119,176 1,620 120,796
Schedule of Revenue Recognized in Current Reporting Period that were Included in Contract Liabilities	The following table shows the amount of revenue recognised in the current reporting period that was included in the contract liabilities at the beginning of the reporting period: 2021 2020 RMB million RMB million Revenue recognised that was included in contract liabilities at the beginning of the year: Passenger transportation services 2,979 6,699
Summary of Contract Liabilities Activity	The table below presents the activity of the contract liabilities for frequent flyer programme. 2021 2020 RMB million RMB million At January 1, 1,966 2,245 Deferred during the year 945 843 Recognised as revenue during the year (1,250 ) (1,122 ) At December 31, 1,661 1,966 Less: the related pending output value added tax therein (169 ) (185 ) 1,492 1,781

Other Operating Income and Ga_2

Other Operating Income and Gains (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Other Operating Income and Gains	2021 2020 2019 RMB million RMB million RMB million Co-operation 3,696 3,650 5,436 Routes subsidy income (note (b)) 383 372 353 Other subsidy income (note (c)) 803 1,326 535 Gain on disposal of items of property, plant and equipment and right-of-use 742 55 40 Gain on disposal of subsidiaries, associates and joint ventures 142 — 64 Compensation from ticket sales agents 63 53 331 Others 250 242 443 6,079 5,698 7,202 (a) Co-operation (b) Routes subsidy income represents subsidies granted by various authorities to support certain international and domestic routes operated by the Group. (c) Other subsidy income represents subsidies granted by various local authorities based on certain amounts of tax paid and other government grants. (d) There are no unfulfilled conditions or other contingencies related to subsidies that were recognised for the year ended December 31, 2021, 2020 and 2019.

Operating (Loss)_ Profit (Table

Operating (Loss)/ Profit (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Operating Profit	Operating (loss)/ profit is stated after charging/(crediting) the following items: 2021 2020 2019 RMB million RMB million RMB million Amortisation of intangible assets (Note 19) 210 239 143 Depreciation of property, plant and equipment (Note 16) 9,490 9,067 9,078 Depreciation of right-of-use 12,389 12,367 12,298 Depreciation of investment properties (Note 17) 10 12 25 Amortisation of long-term deferred assets included in other non-current 619 570 536 Impairment charge on property, plant and equipment (Note 9) 1 31 4 Write-down of flight equipment spare parts to net realisable 21 153 — Consumption of flight equipment spare parts 1,218 1,135 1,013 Auditors’ remuneration 12 17 18

Wages, Salaries and Benefits (T

Wages, Salaries and Benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Wages, Salaries and Benefits	2021 2020 2019 RMB million RMB million RMB million Wages, salaries, bonuses and allowances 15,776 16,412 19,385 Employee welfare and benefits 435 128 143 Pension (Note 39(a)) 2,412 2,149 2,571 Medical insurance (note (i)) 982 725 789 Staff housing fund (note (ii)) 1,265 1,195 1,056 Staff housing allowances (note (iii)) 186 214 186 Early retirement benefits (note (iv)) 5 4 22 21,061 20,827 24,152 Notes: (i) Medical insurance Majority of the Group’s PRC employees participate in the medical insurance schemes organised by municipal governments. (ii) Staff housing fund In accordance with the relevant PRC housing regulations, the Group is required to contribute to the state-sponsored housing fund for its employees. At the same time, the employees are required to contribute an amount equal to the Group’s contribution. The employees are entitled to claim the entire sum of the fund contributed under certain specified withdrawal circumstances. The Group has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits. (iii) Staff housing allowances The Group also provides staff housing allowances in cash to eligible employees. The total entitlement of an eligible employee is principally provided over a period of 20 years. Upon an eligible employee’s resignation or retirement, his or her entitlement would cease and any unpaid entitlement related to past service up to the date of resignation or retirement would be paid. (iv) Early retirement benefits The Group implements an early retirement scheme which allows eligible employees to early retire on a voluntary basis. The Group undertakes the obligations to pay the early retirement employees’ basic salaries and certain welfare in the future on a monthly basis according to the early retirement scheme, together with social insurance and housing fund pursuant to the regulation of the local government. The benefits of the early retirement scheme are calculated based on factors including the remaining number of years of service from the date of early retirement to the normal retirement date and the benefits the early retirement employees enjoyed. The present value of the future cash flows expected to be required to settle the obligations is recognised as a provision in “other long-term liabilities”. 2021 Fees Salaries, allowances and benefits in kind Performance related bonuses Pension scheme contributions Total RMB’000 RMB’000 RMB’000 RMB’000 RMB’000 Executive Directors Liu Shaoyong* — — — — — Li Yangmin* — — — — — Tang Bing* — — — — — Lin Wanli** — — — — — Jiang Jiang***** — — — — — Independent non-executive Cai Hongping 200 — — — 200 Dong Xuebo 80 — — — 80 Sun Zheng** 120 — — — 120 Lu Xiongwen** 120 — — — 120 Shao Ruiqing*** 100 — — — 100 Supervisors Guo Lijun** — 1,082 — 31 1,113 Fang Zhaoya* — — — — — Zhou Huaxin***** — 534 — 21 555 Total 620 1,616 — 52 2,288 2020 Fees Salaries, allowances and benefits in kind Performance related bonuses Pension scheme contributions Total RMB’000 RMB’000 RMB’000 RMB’000 RMB’000 Executive Directors Liu Shaoyong* — — — — — Wang Junjin*** — — — — — Li Yangmin* — — — — — Tang Bing* — — — — — Yuan Jun*&*** — — — — — Jiang Jiang***** — 2,325 — 36 2,361 Independent non-executive Lin Wanli*** — — — — — Shao Ruiqing 200 — — — 200 Cai Hongping 200 — — — 200 Dong Xuebo 60 — — — 60 Supervisors Xi Sheng* &*** — — — — — Gao Feng*** — 536 — 23 559 Zhou Huaxin***** — 45 — 2 47 Fang Zhaoya* — — — — — Total 460 2,906 — 61 3,427 2019 Fees Salaries, allowances and benefits in kind Performance related bonuses Pension scheme contributions Total RMB’000 RMB’000 RMB’000 RMB’000 RMB’000 Executive Directors Liu Shaoyong* — — — — — Ma Xulun* & — — — — — Wang Junjin** — — — — — Li Yangmin* & — — — — — Tang Bing* & — — — — — Yuan Jun* — — — — — Independent non-executive Lin Wanli — — — — — Li Ruoshan*** 200 — — — 200 Ma Weihua*** 200 — — — 200 Shao Ruiqing 200 — — — 200 Cai Hongping 200 — — — 200 Dong Xuebo** 5 — — — 5 Supervisors Xi Sheng* — — — — — Gao Feng — 665 — 21 686 Li Jinde*&*** — — — — — Fang Zhaoya* & — — — — — Total 805 665 — 21 1,491 * These directors and supervisors of the Company received emoluments from CEA Holding, the parent company, part of which were in respect of their services to the Company and its subsidiaries. No apportionment has been made as it is impracticable to apportion those amounts between their services to the Group and their services to CEA Holding. ** These directors and supervisors of the Company were newly appointed or elected during the years ended December 31, 2021,2020 and 2019, respectively. *** These directors and supervisors of the Company resigned during the years ended December 31, 2021, 2020 and 2019, respectively. **** Mr. Ma Xulun resigned on February 1, 2019. ***** Mr. Jiang Jiang was newly appointed as Employee Representative Director on December 28, 2020 and Mr. Zhou Huaxin was newly appointed as Supervisor on December 10, 2020. Their salaries, allowances and benefits in kind were listed as being Managers.
Summary of information about benefits of directors	(v) Directors’ and executive’s remuneration Directors’ and executive’s remuneration for the year, disclosed pursuant to the Listing Rules, section 383(1)(a), (b), (c) and (f) of the Hong Kong Companies Ordinance and Part 2 of the Companies (Disclosure of Information about Benefits of Directors) Regulation, is as follows: 2021 2020 2019 RMB million RMB million RMB million Fees 620 460 805 Other emoluments: Salaries, allowances and benefits in kind 1,616 2,906 665 Performance related bonuses* — — — Pension scheme contributions 52 61 21 2,288 3,427 1,491 * No executive directors of the Company are entitled to bonus payments which are determined as percentage of the profit after tax of the Group.
Summary of Five Highest Paid Individuals	During the years ended December 31, 2021, 2020 and 2019, no directors and supervisors waived their emoluments. (f) Five highest paid individuals Nil of the Company’s directors and supervisors was among the five highest paid individuals in the Group for the year ended December 31, 2021 (2020: One, 2019: Nil). The emoluments payable to the five highest paid individuals were as follows: 2021 2020 2019 RMB’000 RMB’000 RMB’000 Wages, salaries and allowances 8,537 10,495 11,413 Performance related bonuses* — — — Pension scheme contributions 185 172 185 8,722 10,667 11,598 * None of the above highest paid individuals are entitled to bonus payments which are determined as a percentage of the profit after tax of the Group. The number of five highest paid individuals whose emoluments fell within the following bands is as follows: 2021 2020 2019 HK$2,000,001 to HK$2,500,000 5 2 2 HK$2,500,001 to HK$3,000,000 — 3 2 HK$3,000,001 to HK$3,500,000 — — 1

Impairment Charges (Tables)

Impairment Charges (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Impairment Charges	2021 2020 2019 RMB million RMB million RMB million Impairment charge on property, plant and equipment (Note 16) 1 31 4 Write-down of flight equipment spare parts to net realisable value (Note 28) 21 153 — 22 184 4

Impairment Losses on Financia_2

Impairment Losses on Financial Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Impairment Losses on Financial Assets, Net	2021 2020 2019 RMB million RMB million RMB million Impairment losses on trade receivable, net (Note 29) 3 15 (6 ) Impairment losses on other receivables (Note 31) 25 17 22 28 32 16

Finance Income (Tables)

Finance Income (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Finance Income	2021 2020 2019 RMB million RMB million RMB million Interest income 339 166 96 Foreign exchange gains, net (Note 12(b)) 1,619 2,494 — 1,958 2,660 96

Finance Costs (Tables)

Finance Costs (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Finance Costs	2021 2020 2019 RMB million RMB million RMB million Interest on bank borrowings 1,946 1,112 1,149 Interest relating to lease liabilities 3,113 3,655 3,894 Interest relating to post-retirement benefit obligations 83 85 92 Interest relating to provision for lease return costs for aircraft and engines 278 283 270 Interest on bonds and debentures 842 632 520 Interest relating to interest rate swap contracts 17 4 (68 ) Less: amounts capitalized into advanced payments on acquisition of aircraft (note (a)) (467 ) (558 ) (687 ) 5,812 5,213 5,170 Foreign exchange losses, net (note (b)) — — 990 5,812 5,213 6,160 Notes (a) The weighted average interest rate used for interest capitalization is 3.57% per annum for the year ended December 31, 2021 (for the year ended December 31, 2020: 3.55%; for the year ended December 31, 2019: 3.51%). (b) The exchange gains and losses primarily related to the translation of the Group’s foreign currency denominated borrowings and lease liabilities for the year ended December 31, 2021, 2020 and 2019.

Income Tax (Tables)

Income Tax (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Income Tax Charged to Profit or Loss	The amounts of income tax (credit)/expense charged to the consolidated income statements represent: 2021 2020 2019 RMB million RMB million RMB million Current income tax 143 222 942 Deferred income tax (4,372 ) (4,149 ) (123 ) (4,229) (3,927) 819
Summary of the Reconciliation of Statutory Tax Rates to Effective Tax Rate	A reconciliation of the tax (credit)/charge applicable to (loss)/profit before tax at the statutory rate for the country in which the Company and the majority of its subsidiaries are domiciled to the tax expense at the effective tax rate is as follows: 2021 2020 2019 RMB million RMB million RMB million (Loss)/profit before income tax (17,513 ) (16,488 ) 4,299 Tax calculated at the tax rate of 25% (2020: 25%, 2019: 25%) (4,378 ) (4,122 ) 1,075 Lower tax rates enacted by local authority 60 56 (139 ) Share of results of associates and joint ventures 35 24 (71 ) Income not subject to tax (84 ) (12 ) (36 ) Expenses not deductible for tax 159 169 128 Utilisation of previously unrecognised tax losses — (16 ) (11 ) Unrecognised tax losses for the year 69 21 17 Utilisation of previously unrecognised deductible temporary differences — (10 ) (8 ) Unrecognised deductible temporary differences — 3 3 Adjustments in respect of current tax of previous periods (1 ) (4 ) (34 ) Additional deduction of research and development costs (58 ) (31 ) (27 ) Income tax deduction of purchase of special equipment for production safety (31 ) (5 ) (78 ) Tax (credit)/charge (4,229 ) (3,927 ) 819 Effective tax rate 24.15 % 23.82 % 19.05 %

Dividends (Tables)

Dividends (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Dividends	2021 2020 2019 RMB million RMB million RMB million Proposed final – Nil (2020: Nil, 2019: 0.050) per ordinary share — — 819

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [Line Items]
Summary of Property Plant and Equipment	Aircraft, engines and flight equipment Buildings Other property, plant and equipment Construction in progress Total RMB million RMB million RMB million RMB million RMB million December 31, 2021 At January 1, 2021 Cost 144,827 15,816 10,337 3,362 174,342 Accumulated depreciation and impairment (63,868 ) (3,102 ) (6,329 ) — (73,299 ) Net carrying amount 80,959 12,714 4,008 3,362 101,043 At January 1, 2021, net of accumulated depreciation and impairment 80,959 12,714 4,008 3,362 101,043 Additions 2,343 170 626 1,467 4,606 Disposals (3,094 ) (85 ) (63 ) — (3,242 ) Transfer from construction in progress — 745 279 (1,024 ) — Transfer from investment properties (Note 17) — 34 — — 34 Transfer from right-of-use 809 — — — 809 Transfer to other non-current — — — (517 ) (517 ) Impairment (1 ) — — — (1 ) Depreciation provided during the year (7,958 ) (536 ) (996 ) — (9,490 ) At December 31, 2021, net of accumulated depreciation and impairment 73,058 13,042 3,854 3,288 93,242 At December 31, 2021: Cost 136,247 16,562 10,986 3,288 167,083 Accumulated depreciation and impairment (63,189 ) (3,520 ) (7,132 ) — (73,841 ) Net carrying amount 73,058 13,042 3,854 3,288 93,242 Aircraft, engines and flight equipment Buildings Other property, plant and equipment Construction in progress Total December 31, 2020 At January 1, 2020 Cost 133,845 14,153 10,217 3,857 162,072 Accumulated depreciation and impairment (54,366 ) (2,499 ) (5,770 ) — (62,635 ) Net carrying amount 79,479 11,654 4,447 3,857 99,437 At January 1, 2020, net of accumulated depreciation and impairment 79,479 11,654 4,447 3,857 99,437 Additions 3,517 69 528 1,055 5,169 Disposals (781 ) (22 ) (102 ) (425 ) (1,330 ) Transfer from construction in progress — 1,102 21 (1,123 ) — Transfer from advanced payments on acquisition of aircraft 53 — — — 53 Transfer from investment properties (Note 17) — 425 — — 425 Transfer from right-of-use 6,402 — — — 6,402 Transfer to investment properties (Note 17) — (13 ) — — (13 ) Transfer to other non-current — — — (2 ) (2 ) Depreciation provided during the year (7,680 ) (501 ) (886 ) — (9,067 ) Impairment (note) (31 ) — — — (31 ) At December 31, 2020, net of accumulated depreciation and impairment 80,959 12,714 4,008 3,362 101,043 At December 31, 2020: Cost 144,827 15,816 10,337 3,362 174,342 Accumulated depreciation and impairment (63,868 ) (3,102 ) (6,329 ) — (73,299 ) Net carrying amount 80,959 12,714 4,008 3,362 101,043 Note: During the year ended December 31, 2020, the Group made an impairment provision of RMB31 million for certain retired engines, the recoverable amount is determined based on the estimated market prices.
Aircraft [member]
Statement [Line Items]
Summary of Property Plant and Equipment	The following table indicates the cost and net carrying amount of the Group’s aircraft pledged as collateral under certain borrowing arrangements (Note 37): 2021 2020 Cost RMB million Net carrying Amount RMB million Cost RMB million Net carrying Amount RMB million Aircraft — pledged as collateral 31,958 23,129 26,149 17,515

Investment Properties (Tables)

Investment Properties (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Investment Properties	2021 2020 RMB million RMB million Cost At January 1 263 883 Transfer from property, plant and equipment (Note 16) — 25 Transfer from right-of-use — 11 Transfer to property, plant and equipment (Note 16) (62 ) (565 ) Transfer to right-of-use (9 ) (91 ) At December 31, 192 263 Accumulated depreciation At January 1 97 230 Transfer from property, plant and equipment (Note 16) — 12 Transfer from right-of-use — 3 Transfer to property, plant and equipment (Note 16) (28 ) (140 ) Transfer to right-of-use (5 ) (20 ) Charge for the year (Note 7) 10 12 At December 31, 74 97 Net book amount At December 31, 118 166
Summary of Fair Value Measurement Hierarchy of Investment Properties	The following table illustrates the fair value measurement hierarchy of the Group’s investment properties: Fair value measurement using Buildings Quoted prices in active markets (Level 1) Significant observable inputs (Level 2) Significant unobservable inputs (Level 3) Total Not measured at fair value but fair value is disclosed: As at December 31, 2021 — 80 244 324 As at December 31, 2020 — 119 326 445

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Presentation of leases for lessee [abstract]
Disclosure Of Right Of Use Assets And The Movements	(a) Right-of-use The carrying amounts of the Group’s right-of-use Aircraft, and engines Prepayments for land use rights Buildings Others Total At January 1, 2020, net of accumulated depreciation 126,464 1,343 824 73 128,704 Additions 7,109 — 1,145 135 8,389 Transfer from investment properties (Note 17) — 71 — — 71 Transfer to property, plant and equipment (Note 16) (6,402 ) — — — (6,402 ) Transfer to investment properties (Note 17) — (8 ) — — (8 ) Disposals (171 ) — (6 ) — (177 ) Depreciation provided during the year (11,322 ) (38 ) (948 ) (59 ) (12,367 ) At December 31, 2020 and January 1, 2021,net of accumulated depreciation 115,678 1,368 1,015 149 118,210 Additions 19,206 1,112 1,350 295 21,963 Transfer from investment properties (Note 17) — 4 — — 4 Transfer to property, plant and equipment (Note 16) (809 ) — — — (809 ) Disposals (58 ) (13 ) (24 ) (9 ) (104 ) Depreciation provided during the year (11,206 ) (259 ) (834 ) (90 ) (12,389 ) At December 31, 2021 122,811 2,212 1,507 345 126,875
Disclosure Of Lease Liabilities	(b) Lease liabilities The carrying amount of lease liabilities and the movements during the year are as follows: 2021 2020 RMB million RMB million Carrying amount at January 1 96,251 110,275 New leases 18,202 7,191 Other addition 486 — Effect of foreign exchange (738 ) (2,768 ) COVID-19-related — (3 ) Accretion of interest recognised during the year 3,113 3,655 Payments (18,838 ) (22,099 ) Carrying amount at December 31, 98,476 96,251 Analysed into: Current portion 16,350 14,073 Non-current 82,126 82,178
Schedule of undiscounted lease payments receivables	(c) The amounts recognised in profit or loss in relation to leases are as follows: 2021 2020 RMB million RMB million Interest on lease liabilities (Note 12) 3,113 3,655 Depreciation charge of right-of-use 12,389 12,367 COVID-19-related — (3 ) Low value and short-term lease rental 383 358 Total amount recognised in profit or loss 15,885 16,377
Disclosure of lease expenses	At December 31, 2021, the undiscounted lease payments receivable by the Group in future periods under non-cancellable 2021 2020 RMB million RMB million Within one year 135 150 After one year but within two years 74 141 After two years but within three years 69 135 After three years but within four years 57 134 After four years but within five years 53 114 After five years 254 197 642 871

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Intangible Assets	Goodwill (Note (a)) Others Total RMB million RMB million RMB million Cost at January 1, 2021, net of accumulated amortization 11,270 448 11,718 Additions — 191 191 Transfer from construction in process — 14 14 Amortization provided during the year — (210 ) (210 ) At December 31, 2021 11,270 443 11,713 At December 31, 2021: Cost 11,270 1,765 12,937 Accumulated amortisation — (1,322 ) (1,224 ) Net carrying amount 11,270 443 11,713 Goodwill Others Total RMB million RMB million RMB million Cost at January 1, 2020, net of accumulated amortization 11,270 428 11,698 Additions — 263 263 Transfer from construction in process — 1 1 Disposal — (5 ) (5 ) Amortization provided during the year — (239 ) (239 ) At December 31, 2020 11,270 448 11,718 At December 31, 2020: Cost 11,270 1,462 12,732 Accumulated amortisation — (1,014 ) (1,014 ) Net carrying amount 11,270 448 11,718 Note: (a) The balance represents goodwill arising from the acquisition of Shanghai Airlines. The value of the goodwill is attributable to strengthening the competitiveness of the Group’s airline transportation operations, attaining synergy through integration of the resources and accelerating the development of international air transportation in Shanghai. For the purpose of impairment assessment, goodwill was allocated to the cash-generating unit (“CGU”) of airline transportation operations that the Group operates and benefits from the acquisition.

Advanced Payments on Acquisit_2

Advanced Payments on Acquisition of Aircraft (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Advanced Payments on Acquisition of Aircraft	December 31, December 31, RMB million RMB million Advanced payments on acquisition of aircraft 12,165 17,240

Subsidiaries (Tables)

Subsidiaries (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of subsidiaries [abstract]
Summary of Principal Subsidiaries	The place of incorporation or registration is also their principal place of business. Company name Place and date of incorporation/ registration and kind of legal entity Principle activities Issued ordinary/ registered share capital Ownership interest held by the group Ownership non-controlling million 2021 2020 2021 2020 China Eastern Airlines Jiangsu Co., Ltd. (“CEA Jiangsu”) PRC/Mainland China, liability company Provision of airline RMB2,000 62.56 % 62.56 % 37.44 % 37.44 % China Eastern Airlines Wuhan Co., Ltd. (“CEA Wuhan”) PRC/Mainland China, Provision of airline RMB1,750 60 % 60 % 40 % 40 % Shanghai Eastern Flight Training Co., Ltd. (“Shanghai Flight Training”) PRC/Mainland China, Provision of flight RMB694 100 % 100 % — — Shanghai Airlines Co., Ltd. (“Shanghai Airlines”) PRC/Mainland China, Provision of airline RMB500 100 % 100 % — — China Eastern Airlines Technology Co., Ltd. (“Eastern Technology”) PRC/Mainland China, limited liability Provision of airline RMB4,300 100 % 100 % — — One two three Airlines Co., Ltd. (“OTT Airlines”) (Originally named Eastern Business Airlines Co., Ltd.) PRC /Mainland China, limited liability Provision of RMB1,500 100 % 100 % — — China Eastern Airlines Yunnan Co., Ltd. (“CEA Yunnan”) (Note(b)) PRC /Mainland China, July 27, 2010, limited liability Provision of airline RMB3,662 65 % 90.36 % 35 % 9.64 % Eastern Air Overseas (Hong Kong) Co., Ltd. (“Eastern Air Overseas”) Hong Kong , June 10, 2011, limited liability Provision of import HKD280 100 % 100 % — — China United Airlines Co., Ltd. (“China United Airlines”) PRC /Mainland China, Provision of airline RMB1,320 100 % 100 % — — China Eastern Airlines Application Development Center Co., Ltd. (“Application Development Center”) PRC /Mainland China, November 21, 2011 , limited liability Provision of RMB498 100 % 100 % — — China Eastern Airlines E-Commerce E-Commerce”) PRC /Mainland China, December 1, 2014, limited liability E-commerce RMB100 100 % 100 % — —
Summary of Subsidiaries that have Material Non-controlling Interests	Details of the Group’s subsidiaries that have material non-controlling December 31, 2021 December 31,2020 Percentage of equity interest held by non-controlling CEA Jiangsu 37.44 % 37.44 % CEA Yunnan (Note (b)) 35.00 % 9.64 % CEA Wuhan 40.00 % 40.00 % December 31, 2021 December 31,2020 RMB million RMB million Loss for the year allocated to non-controlling CEA Jiangsu (612 ) (435 ) CEA Yunnan (348 ) (73 ) CEA Wuhan (127 ) (207 ) Accumulated balances of non-controlling at the reporting date: CEA Jiangsu 395 1,010 CEA Yunnan 2,000 631 CEA Wuhan 1,160 1,299
Summary of Financial Information of Subsidiaries that have Material Non-controlling Interests	The following tables illustrate the summarised financial information of the above subsidiaries. The amounts disclosed are before any inter-company eliminations: December 31, 2021 CEA Jiangsu CEA Yunnan CEA Wuhan RMB million RMB million RMB million Revenue 5,157 6,595 2,813 Total expenses (6,792 ) (7,616 ) (3,131 ) Loss for the year (1,635 ) (1,021 ) (318 ) Total comprehensive income for the year (1,642 ) (1,021 ) (341 ) Current assets 384 467 158 Non-current 14,006 17,164 6,938 Current liabilities 6,146 5,622 2,091 Non-current 7,189 5,461 2,098 Net cash flows from operating activities 1,155 1,585 637 Net cash flows generated from /(used in) investing activities 591 (309 ) (156 ) Net cash flows used in financing activities (1,754 ) (1,275 ) (481 ) Effect of foreign exchange rate changes, net — — — Net decrease in cash and cash equivalents (8 ) 1 — December 31, 2020 CEA Jiangsu CEA Yunnan CEA Wuhan RMB million RMB million RMB million Revenue 4,550 6,048 1,650 Total expenses (5,713 ) (6,809 ) (2,167 ) Loss for the year (1,163 ) (761 ) (517 ) Total comprehensive loss for the year (1,164 ) (761 ) (532 ) Current assets 477 290 97 Non-current 12,724 17,999 7,590 Current liabilities (4,109 ) (5,219 ) (1,998 ) Non-current (6,395 ) (6,528 ) (2,441 ) Net cash flows from operating activities 1,833 3,232 642 Net cash flows used in investing activities (331 ) (534 ) (99 ) Net cash flows used in financing activities (1,556 ) (2,698 ) (543 ) Effect of foreign exchange rate changes, net — — — Net decrease in cash and cash equivalents (55 ) — —
Summary of Transaction with Non-controlling Interests	2021 RMB million Carrying amount of non-controlling 1,717 Consideration paid by non-controlling 1,028 Deficit of consideration received recognised in the transactions with non-controlling 689

Investment in Associate (Tables

Investment in Associate (Tables)	12 Months Ended
	Dec. 31, 2021
Investments accounted for using equity method [abstract]
Summary of Investments in Associates	2021 2020 RMB million RMB million Share of net assets 1,777 1,793 The movements in investments in associates were as follows: 2021 2020 RMB million RMB million At January 1 1,793 1,977 Additions 140 — Share of results of associates (97 ) (82 ) Share of revaluation on equity investments designated at fair value through other comprehensive income held by an associate (7 ) 2 Dividend declared during the year (21 ) (104 ) Disposal of associates (31 ) — At December 31 1,777 1,793
Summary of Principal Associates	Particulars of the principal associates, which are limited liability companies, are as follows: Place of Registered capital Attributable equity Principal activities Company name 2021 Million 2020 Million 2021 2020 Eastern Air Group Finance Co., Ltd. (“Eastern Air Finance Company”) PRC/Mainland China December 6, 1995 RMB2,000 RMB2,000 25% 25% Provision of financial services to group companies of CEA Holding China Eastern Air Catering Investment Co., Ltd. PRC/Mainland China November 17, 2003 RMB350 RMB350 45% 45% Provision of air catering services Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. (“Shanghai P&W”) (note) PRC/Mainland China March 28, 2008 USD40 USD40 51% 51% Provision of aircraft, New Shanghai International Tower Co., Ltd. PRC/Mainland China November 17, 1992 RMB167 RMB167 20% 20% Property development provision and management services Eastern Aviation Import & Export Co., Ltd. (“Eastern Import & Export”) PRC/Mainland China June 9, 1993 RMB80 RMB80 45% 45% Provision of aviation Eastern Aviation Advertising Service Co., Ltd. (“Eastern Advertising” PRC/Mainland China March 4, 1986 RMB200 RMB200 45% 45% Provision of aviation Shanghai Collins Aviation Maintenance Service Co., Ltd. (“Collins Aviation”) PRC/Mainland China September 27, 2002 USD7 USD7 35% 35% Provision of airline Shanghai Airlines Tours International (Group) Co., Ltd. (“Shanghai Airlines Tours”) PRC/Mainland China August 29, 1992 RMB143 RMB143 35% 35% Tour operations, travel
Summary of Aggregate Financial Information of Associates	The following table illustrates the aggregate financial information of the Group’s associates that were not individually material: 2021 2020 RMB million RMB million Share of the associates’ loss for the year (97 ) (82 ) Share of the associates’ other comprehensive income (7 ) 2 Share of the associates’ total comprehensive income (104 ) (80 ) Aggregate carrying amount of the Group’s interests in the associates 1,777 1,793

Investments in Joint Ventures (

Investments in Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2021
Investments accounted for using equity method [abstract]
Summary of Investments in Joint Ventures	2021 2020 RMB million RMB million Share of net assets 484 594 The movements in investments in joint ventures were as follows: 2021 2020 RMB million RMB million At January 1 594 627 Share of results (44 ) (13 ) Dividend declared during the year (12 ) (20 ) Disposal of joint ventures (54 ) — At December 31 484 594
Summary of Principal Joint Ventures	Particulars of the principal joint ventures, which are limited liability companies, are as follows: Company name Place of establishment Registered capital Attributable equity Principal activities 2021 Million 2020 Million 2021 2020 Shanghai Technologies Aerospace Co., Ltd. (“Technologies Aerospace”) (note) PRC/Mainland China September 28, 2004 USD73 USD73 51% 51% Provision of repair and maintenance services Shanghai Eastern Union Aviation Wheels & Brakes Maintenance Services Overhaul Engineering Co., Ltd. (“Wheels & Brakes”) PRC/Mainland China December 28, 1995 USD2 USD2 — 40% Provision of spare parts Eastern China Kaiya System Integration Co., Ltd. (“China Kaiya”) PRC/Mainland China May 21, 1999 RMB10 RMB10 41% 41% Provision of computer CAE Melbourne Flight Training Pty Ltd. (“CAE Melbourne”) Australia AUD11 AUD11 50% 50% Provision of flight training services Shanghai Hute Aviation Technology Co., Ltd. (“Shanghai Hute”) PRC/Mainland China April 9, 2003 RMB30 RMB30 — 50% Provision of equipment Maintenance services Xi’an CEA SAFRAN Landing Systems Services Co., Ltd. (“XIESA”) PRC/Mainland China July 12, 2017 USD40 USD40 50% 50% Provision of aircraft, engine
Summary of Aggregate Financial Information of Joint Ventures	The following table illustrates the aggregate financial information of the Group’s joint ventures that were not individually material: 2021 2020 RMB million RMB million Share of the joint ventures’ (loss)/profit and total comprehensive income for the year (44 ) (13 ) Aggregate carrying amount of the Group’s interests in the joint ventures 484 594

Equity Investments Designated_2

Equity Investments Designated at Fair Value Through Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Equity Investments Designated at Fair Value Through Other Comprehensive Income	December 31, 2021 December 31, 2020 RMB million RMB million Listed equity investment, at fair value TravelSky Technology Limited 237 457 Unlisted equity investments, at fair value Aviation Data Communication Corporation Limited 137 182 Sichuan Airlines Corporation Limited 34 194 Others 49 162 220 538 457 995
Summary of Amounts Recognised In Profit Or Loss And Other Comprehensive Income	Amounts recognised in profit or loss and other comprehensive income: 2021 2020 RMB million RMB million Losses recognised in other comprehensive income, net of tax 247 209 Dividends from equity investments held at FVOCI recognised in profit or loss in other income 3 12

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Derivative Financial Instruments	Assets Liability 2021 RMB million 2020 RMB million 2021 RMB million 2020 RMB million Fuel forward contracts — 399 — 1 Interest rate swaps — — 46 140 Total — 399 46 141 Less: current portion — Fuel forward contracts — 362 — 1 — Interest rate swaps — — 1 2 Current portion — 362 1 3 Non-current — 37 45 138

Other Non-current Assets (Table

Other Non-current Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Other Non-current Assets	December 31, December 31, RMB million RMB million Deposits relating to aircraft held under leases 140 143 Deferred pilot recruitment costs 2,088 2,100 Rebate receivables on aircraft acquisitions 1,134 1,264 Prepayment for acquisition of property, plant and equipment 286 1,055 Others 821 783 4,469 5,345

Deferred Tax Assets and Liabi_2

Deferred Tax Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Net Deferred Tax Assets/(Liabilities)	The following amounts, determined after appropriate offsetting, are shown in the consolidated statement of financial position: December 31, 2021 December 31, 2020 RMB million RMB million Deferred tax assets: 9,580 5,011 Deferred tax liabilities — (13 ) Net deferred income tax assets 9,580 4,998
Summary of Movements in Net Deferred Tax Assets	Movements in the net deferred tax assets were as follows: December 31, December 31, RMB million RMB million At January 1 4,998 831 Credited to profit or loss (Note 13) 4,372 4,149 Charged to other comprehensive income 210 18 At December 31 9,580 4,998
Summary of Deferred Tax Assets and Liabilities Prior to Offsetting of Balances within Same Tax Jurisdiction	The deferred tax assets and liabilities (prior to the offsetting of balances within the same tax jurisdiction) were made up of the taxation effects of the following: December 31, 2021 December 31, 2020 RMB million RMB million Deferred tax assets: Provision for lease return costs for aircraft and engines 1,190 1,109 Lease liabilities/right-of-use — 94 Impairment provision for flight equipment spare parts 65 61 Impairment provision for receivables 84 80 Impairment provision for property, plant and equipment 61 115 Derivative financial instruments 12 36 Financial asset at fair value through profit or loss 10 7 Other payables and accruals 65 70 Government grants related to assets 22 29 Loss available for offsetting against future taxable profits 8,323 3,699 Safety equipment tax credit 41 10 Aged payables — 1 9,873 5,311 Deferred tax liabilities: Lease liabilities/right-of-use (214) — Equity investments designated at fair value through other comprehensive income (79) (213) Derivative financial instruments — (100) (293) (313) 9,580 4,998
Summary of Movements in Net Deferred Tax (Liabilities)/Assets of the Group	Movements in the net deferred tax assets/(liabilities) of the Group for the year were as follows: At January (Charged) / (Charged) / At 31, 2021 RMB million RMB million RMB million RMB million For the year ended December 31, 2021 Provision for lease return costs for aircraft and engines 1,109 81 — 1,190 Lease liabilities/right-of-use 94 (94 ) — — Impairment provision for flight equipment spare parts 61 4 — 65 Impairment provision for receivables 80 4 — 84 Impairment provision for property, plant and equipment 115 (54 ) — 61 Derivative financial instruments 36 — (24 ) 12 Financial asset at fair value through profit or loss 7 3 — 10 Other payables and accruals 70 (5 ) — 65 Government grants related to assets 29 (7 ) — 22 Loss available for offsetting against future taxable profits 3,699 4,624 — 8,323 Safety equipment tax credit 10 31 — 41 Aged payables 1 (1 ) — — 5,311 4,586 (24) 9,873 Lease liabilities/right-of-use — (214 ) — (214 ) Equity investments designated at fair value through other comprehensive income (213 ) — 134 (79 ) Derivative financial instruments (100 ) — 100 — (313) (214) 234 (293) Net deferred tax assets 4,998 4,372 210 9,580 At January 0 (Charged) / (Charged) / At 31, 2020 RMB million RMB million RMB million RMB million For the year ended December 31, 2020 Provision for lease return costs for aircraft and engines 1,075 34 — 1,109 Lease liabilities/Right-of-use — 94 — 94 Impairment provision for flight equipment spare parts 53 8 — 61 Impairment provision for receivables 76 4 — 80 Impairment provision for property, plant and equipment 101 14 — 115 Derivative financial instruments 6 — 30 36 Financial asset at fair value through profit or loss — 7 — 7 Other payables and accruals 71 (1 ) — 70 Government grants related to assets 35 (6 ) — 29 Loss available for offsetting against future taxable profits 66 3,633 — 3,699 Safety equipment tax credit — 10 — 10 Aged payables 1 — — 1 1,484 3,797 30 5,311 Lease liabilities/Right-of-use (352 ) 352 — — Equity investments designated at fair value through other comprehensive income (283 ) — 70 (213 ) Derivative financial instruments (18 ) — (82 ) (100 ) (653) 352 (12) (313) Net deferred tax assets 831 4,149 18 4,998
Summary of Balances for Which Deferred Tax Assets Have Not Been Recognised	As at the reporting date, the Group had the following balances in respect of which deferred tax assets have not been recognised: 2021 2020 Deferred Temporary Deferred Temporary RMB million RMB million RMB million RMB million Tax losses carried forward 95 380 34 135 Other deductible temporary differences 8 33 8 35 Total unrecognised deferred tax assets 103 413 42 170

Flight Equipment Spare Parts (T

Flight Equipment Spare Parts (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Flight Equipment Spare Parts	December 31, 2021 December 31, 2020 RMB million RMB million Flight equipment spare parts 2,059 2,299 Less: provision for spare parts (260 ) (245 ) 1,799 2,054
Summary of Movements in Provision for Impairment of Flight Equipment Spare Parts	Movements in the Group’s provision for impairment of flight equipment spare parts were as follows: December 31, 2021 December 31, 2020 RMB million RMB million At January 1 245 325 Accrual 21 153 Amount written off in relation to disposal of spare parts (6 ) (233 ) At December 31 260 245

Trade Receivables (Tables)

Trade Receivables (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [Line Items]
Summary of Trade and Notes Receivables	The credit terms given to trade customers are determined on an individual basis. December 31, 2021 December 31, 2020 RMB million RMB million Trade receivables 1,051 1,210 Less: impairment (77 ) (86 ) 974 1,124
Summary of Ageing Analysis of Trade Receivables and Net of Loss Allowance	An ageing analysis of the trade receivables as at the end of the reporting period, based on the invoice/billing date and net of loss allowance, is as follows: December 31, 2021 December 31, 2020 RMB million RMB million Within 90 days 919 1,054 91 to 180 days 39 46 181 to 365 days 9 8 Over 365 days 7 16 974 1,124
Schedule of Credit Risk Exposure on Group's Trade Receivables	Set out below is the information about the credit risk exposure on the Group’s trade receivables using a provision matrix: As at December 31, 2021 Past due Less than 90 to 365 Over Current 90 days days 365 days Total Expected credit loss rate (%) 0.70 3.67 5.36 90.79 7.37 Gross carrying amount (RMB million) 925 40 10 76 1,051 Expected credit losses (RMB million) 6 1 1 69 77 As at December 31, 2020 Past due Less than 90 to 365 Over Current 90 days days 365 days Total Expected credit loss rate (%) 0.85 4.79 6.87 76.93 7.08 Gross carrying amount (RMB million) 1,063 42 9 96 1,210 Expected credit losses (RMB million) 9 1 1 75 86
Trade and notes receivables [member]
Statement [Line Items]
Summary of Provision for Impairment of Trade Receivables	The movements in the loss allowance for impairment of trade receivables are as follows: December 31, 2021 December 31, 2020 RMB million RMB million At January 1 86 76 Impairment losses, net (Note 10) 3 15 Amount written off as uncollectible (12 ) (5 ) At December 31 77 86

Financial Asset at Fair Value T

Financial Asset at Fair Value Through Profit or Loss (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [Line Items]
Summary of Financial Asset at Fair Value Through Profit or Loss	2021 2020 RMB million RMB million Listed equity investment, at fair value: Shanghai Pudong Development Bank Co., Ltd. 84 95
Financial assets at fair value, class [member]
Statement [Line Items]
Summary of Financial Asset at Fair Value Through Profit or Loss	2021 2020 RMB million RMB million Fair value losses on equity investments at FVPL recognised in other losses (11 ) (26 )

Prepayments and Other Receiva_2

Prepayments and Other Receivables (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Prepayments and Other Receivables	2021 2020 RMB million RMB million Value added tax recoverable 9,025 7,997 Value added tax refundable 323 174 Subsidy receivable 1,493 1,421 Prepaid corporate income tax 85 347 Advance to suppliers 158 121 Rebate receivables on aircraft acquisitions 299 90 Amounts due from related parties (Note 45(c)(i)) 382 769 Deposits relating to aircraft held under leases — 7 Other deposits 237 161 Others 381 380 12,383 11,467 Provision for impairment of other receivables (294 ) (269 ) 12,089 11,198
Schedule of Movements of Loss Allowances Measured at 12-month and Lifetime Expected Credit Losses Included in Other Receivables and Gross Carrying Amounts of Fnancial Assets	Set out below are the movements of loss allowances measured at 12-month 12-month ECLs Lifetime ECLs Stage 1 Stage Stage Total As at January 1, 2021 36 122 111 269 Transferred — to stage 3 — (71 ) 71 — Transferred — to stage 2 (8 ) 8 — — Accrual 1 9 15 25 As at December 31, 2021 29 68 197 294 12-month ECLs Lifetime ECLs Stage 1 Stage 2 Stage 3 Total As at January 1, 2020 33 108 122 263 Transferred — to stage 2 (2 ) 2 — — Accrual 5 12 — 17 Write-off — — (11 ) (11 ) As at December 31, 2020 36 122 111 269

Cash and Cash Equivalents and_2

Cash and Cash Equivalents and Restricted Cash (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Cash and Cash Equivalents and Restricted Cash	December 31, 2021 December 31, 2020 RMB million RMB million Cash at bank and on hand 12,962 7,663 Less: restricted cash (a) (12 ) (12 ) Cash and cash equivalents(b) 12,950 7,651 (a) Details of restricted cash are as follows: December 31, 2021 December 31, 2020 RMB million RMB million Restricted bank deposits 12 12 (b) At the end of the reporting period, the cash and bank balances of the Group denominated in RMB amounted to RMB12,788 million (2020: RMB6,658 million). The RMB is not freely convertible into other currencies. However, under Mainland China’s Foreign Exchange Control Regulations and Administration of Settlement, Sale and Payment of Foreign Exchange Regulations, the Group is permitted to exchange RMB for other currencies through banks authorised to conduct foreign exchange business.

Trade payables and bills paya_2

Trade payables and bills payable (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Analysis of Trade and Bills Payables	An ageing analysis of the trade and bills payables as at the end of the reporting period was as follows: December 31, 2021 December 31, 2020 RMB million RMB million Within 90 days 2,338 2,868 91 to 180 days 6 35 181 to 365 days 16 109 1-2 15 111 Over 2 years 79 97 2,454 3,220

Contract liabilities (Tables)

Contract liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Contract liabilities	The Group has recognised the following liabilities related to contracts with customers: December 31, 2021 December 31, 2020 RMB million RMB million Sales in advance of carriage 2,128 2,155 Frequent flyer programme (Note 5) 1,492 1,781 Advances from customers 566 1,055 4,186 4,991 Current portion 3,287 3,671 Non-current 899 1,320

Other Payables and Accruals (Ta

Other Payables and Accruals (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Other Payables and Accruals	December 31, 2021 December 31, 2020 RMB million RMB million Salaries, wages and benefits 2,757 3,806 Take-off 2,150 2,330 Fuel cost 1,141 451 Expenses related to aircraft overhaul conducted 2,541 2,853 Duties and levies payable 1,739 1,353 Food and beverages 403 125 Payable for system services 1,060 1,643 Lease rentals 527 484 Other accrued operating expenses 426 567 Payable for purchase of property, plant and equipment 1,722 2,310 Pending output value added tax 216 250 Deposits received from ticket sales agents 375 420 Other deposit 540 529 Current portion of other long-term liabilities (Note 40) 293 235 Amounts due to related parties (Note 45(c)(ii)) 213 398 Current portion of post-retirement benefit obligations (Note 39(b)) 160 165 Others 2,482 3,700 Total 18,745 21,619

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [Line Items]
Summary of Borrowings	December 31, 2021 December 31, 2020 RMB million RMB million Non-current: Long-term bank borrowings - secured (note (a)) 16,401 8,638 - unsecured 11,750 4,526 Guaranteed bonds (note (b)) 8,648 9,585 Unsecured bonds (note (b)) 13,993 7,996 50,792 30,745 Current Current portion of non-current - secured (note (a)) 1,910 1,498 - unsecured 211 28 Current portion of guaranteed bonds (note (b)) 1,828 3,158 Current portion of unsecured bonds (note (b)) 3,436 4,000 Short-term bank borrowings - unsecured 37,614 21,966 Short-term debentures — 26,500 44,999 57,150 95,791 87,895 The borrowings are repayable as follows: December 31, 2021 December 31, 2020 RMB million RMB million Within one year 44,999 57,149 In the second year 14,080 5,936 Between third and fifth years, inclusive 15,900 17,680 After the fifth year 20,812 7,130 95,791 87,895 Notes: (a) As at December 31, 2021, the secured bank borrowings of the Group were secured by the related aircraft with a net carrying amount of RMB23,129 million (2020: RMB17,515 million) (Note 16).
Summary of Detailed Borrowings from Banks	(b) Detailed borrowings from banks are listed below: Issue date Principal Notes Interest rate Ten-year 2013/03/18 RMB4.8 billion (i ) 5.05 % Ten-year 2016/10/24 RMB1.5 billion (ii ) 3.03 % Ten-year 2016/10/24 RMB1.5 billion (ii ) 3.30 % Three-year medium-term bonds 2019/03/05 RMB3 billion (iii ) 3.70 % Five-year corporate bonds 2019/08/19 RMB3 billion (iv ) 3.60 % Three-year corporate bonds 2019/12/06 KRW300 billion (v ) 2.40 % Three-year corporate bonds 2020/04/24 RMB2 billion (vi ) 2.39 % Ten-year 2021/03/11 RMB3 billion (vii ) 3.95 % Six-year 2021/03/11 RMB6 billion (viii ) 3.68 % Five-year credit enhanced bonds 2021/07/15 SGD0.5 billion (ix ) 2.00 % (i) On March 18, 2013 , the Company issued ten-year guaranteed bonds with a principal amount of RMB4.8 billion at an issue price equal to the face value of the bonds. The bonds bear interest at the rate of 5.05% per annum, which is payable annually. The principal of the bonds will mature and become repayable on March 18, 2023 . CEA Holding has unconditionally and irrevocably guaranteed the due payment and performance of the above bonds (Note 45 (d)). (ii) On October 24, 2016 , the Company issued ten-year corporate bonds with a total principal amount of RMB3 billion, of which bonds of R MB1.5 billion bear interest at the rate of 3.03% per annum and the remaining bonds of R MB1.5 billion bear interest at the rate of 3.30% per annum. The bonds interest is payable annually. The principal of the bonds will mature and become repayable on October 24, 2026 . CEA Holding has unconditionally and irrevocably guaranteed the due payment and performance of the above bonds (Note 45 (d)). (iii) On March 5, 2019 , the Company issued three-year medium-term bonds with a principal amount of RMB3 billion , at an issue price equal to the face value of the bonds. The bonds bear interest at the rate of 3.70% per annum , which is payable annually. The principal of the bonds will mature and become repayable on March 7, 2022 . (iv) On August 19, 2019 , the Company issued five-year corporate bonds with a total principal amount of RMB3 billion . The bonds bear interest at the rate of 3.60% per annum, which is payable annually. The principal of the bonds will mature and become repayable on August 20, 2024 . (v) On December 6, 2019 , Eastern Air Overseas issued three-year corporate bonds with a principal amount of KRW300 billion , at an issue price equal to the face value of the bonds. The bonds bear interest at the rate of 2.40% per annum , which is payable annually. The principal of the bonds will mature and become repayable on December 6, 2022 . The Company has unconditionally and irrevocably guaranteed the due payment and performance of the above bonds. (vi) On April 24, 2020 , the Company issued three-year corporate bonds with a total principal amount of RMB2 billion . The bonds bear interest at the rate of 2.39% per annum , which is payable annually. The principal of the bonds will mature and become repayable on April 28, 2023 . (vii) On March 11, 2021 , the Company issued ten-year corporate bonds with a principal amount of RMB3 billion. The bonds bear interest at the rate of 3.95% pe r annum which is payable annually. The principle of the bonds will mature and become repayable on March 12, 2031 . (viii) On March 11, 2021 , the Company issued six-year corporate bonds with a principal amount of RMB6 billion. The bonds bear interest at the rate of 3.68% per annum which is payable annually. The principle of the bonds will mature and become repayable on March 12, 2027 . (ix) On July 15, 2021 , Eastern Air Overseas issued five-year credit enhanced bonds with a principal amount of SGD0.5 billion. The bonds bear interest at the rate of 2.00% per annum which is payable semi-annually. The principle of the bonds will mature and become repayable on July 15, 2026 . The bonds are secured by a standby letter of credit issued by Industrial and Commercial Bank of China Limited Shanghai Municipal Branch.
Long-term borrowings [member]
Statement [Line Items]
Summary of Borrowings	The terms of the long-term borrowings and bonds were summarised as follows: Interest rate and final maturities December December Long-term bank borrowings RMB denominated Interest rates ranging from 2.40% to 4.15% with final maturities through 2045 (2020: 2.40% to 4.21%) 28,302 11,651 USD denominated Interest rates ranging from 6-month +0.70% to 6-month maturities through 2022 (2020: 6-month +0.70% to 6-month 13 375 EUR denominated Interest rates at 3-month final maturities through 2026 (2020: 3 months EURLIBOR +0.5%) 1,957 2,664 Guaranteed bonds RMB denominated Interest rates ranging from 3.03% to 5.05% with final maturities through 2026 (2020: 3.03% to 5.05%) 6,499 7,798 JPY denominated Interest rates ranging from 0.33% to 0.64% with final maturities through 2021 (2020: 0.33% to 0.64%) — 3,158 KRW denominated Interest rate at 2.40% with final maturities through 2022 (2020: 2.40%) 1,606 1,787 SGD denominated Interest rate at 2.00% with final maturities through 2026 2,371 — Unsecured bonds RMB denominated Interest rates ranging from 2.39 final maturities through 2031 (2020: from 2.39% to 3.70%) 17,429 11,996 58,177 39,429

Provision For Lease Return Co_2

Provision For Lease Return Costs For Aircraft And Engines (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Provision for Return Condition Checks for Aircraft Under Operating Leases	2021 2020 At January 1 6,990 7,178 Accrual 373 283 Utilisation (93 ) (471 ) At December 31 7,270 6,990 Less: current portion — (24 ) Non-current 7,270 6,966

Post-Retirement Benefit Oblig_2

Post-Retirement Benefit Obligations (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Post-retirement Benefit Obligations Recognized in Consolidated Statement of Financial Position	The post-retirement benefit obligations recognised in the consolidated statement of financial position are as follows: 2021 2020 Post-retirement benefit obligations 2,527 2,538 Less: current portion (160 ) (165 ) Non-current 2,367 2,373
Summary of Principal Actuarial Assumptions Utilized	The principal actuarial assumptions utilised as at the end of the reporting period are as follows: 2021 2020 Discount rates for post-retirement benefits 2.85 % 3.40 % Mortality rate China Insurance Life Mortality Table (2010-2013). CL5 for Male and CL6 for Female China Insurance Life Mortality Table (2010-2013). Annual increase rate of post-retirement medical expenses 6.50 % 6.50 % Inflation rate of pension benefits 2.50 % 2.50 %
Summary of Quantitative Sensitivity Analysis for Significant Assumptions	A quantitative sensitivity analysis for significant assumptions at the end of the reporting period is shown below: Increase in Increase/ post-retirement Decrease in Increase/ post-retirement 2021 Discount rate for post-retirement benefits 0.25 (66 ) 0.25 69 Annual increase rate of pension benefits 1.00 246 1.00 (211 ) Annual increase rate of medical expenses 1.00 37 1.00 (31 ) 2020 Discount rate for post-retirement benefits 0.25 (78 ) 0.25 81 Annual increase rate of pension benefits 1.00 244 1.00 (208 ) Annual increase rate of medical expenses 1.00 43 1.00 (36 )
Summary of Expected Contributions of Post-retirement Benefit Obligations	Expected contributions to be made in the future years out of the post-retirement benefit obligations were as follows: 2021 2020 Within the next 12 months 161 165 Between 2 and 5 years 635 660 Between 6 and 10 years 757 805 Over 10 years 1,998 2,449 Total expected payments 3,551 4,079
Summary of Movements in Post-retirement Benefit Obligations	The movements in the post-retirement benefit obligations were as follows: 2021 Pension cost charged to profit or loss Remeasurement losses in other comprehensive income January 1, 2021 Service cost Net interest Sub- total included in profit or loss Actuarial changes arising from changes in financial assumptions Actuarial changes arising from changes in demographic assumptions Experience adjustments Sub-total included in other compreh- income Benefit settled December 31, 2021 RMB RMB RMB RMB RMB million RMB million RMB million RMB RMB RMB Defined benefit obligations/ benefit liability 2,538 — 83 83 140 — (56 ) 84 (178 ) 2,527 2020 Pension cost charged to profit or loss Remeasurement losses in other comprehensive income January 1, 2020 Service cost Net interest Sub- total included in profit or loss Actuarial changes arising from changes in financial assumptions Actuarial changes arising from changes in demographic assumptions Experience adjustments Sub-total included in other compreh- income Benefit settled December 31, 2020 RMB RMB RMB RMB RMB million RMB million RMB million RMB RMB RMB Defined benefit obligations/ benefit liability 2,584 — 85 85 — — 61 61 (192 ) 2,538

Other Long-term Liabilities (Ta

Other Long-term Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Other Long-term Liabilities	December 31, 2021 December 31, 2020 RMB million RMB million Long-term duties and levies payable relating to finance leases 908 1,159 Deferred gains relating to government grants 91 121 Provision for early retirement benefit obligations and other benefit obligations 315 251 Other long-term payables 1,227 659 2,541 2,190 Less: current portion included in other payables and accruals (Note 36) (293 ) (235 ) Non-current 2,248 1,955

Share Capital (Tables)

Share Capital (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Share Capital	December 31, 2021 December 31, 2020 RMB million RMB million Registered, issued and fully paid of RMB1.00 each A shares listed on the Shanghai Stock Exchange (“A Shares”) 13,697 11,202 — Tradable shares with trading moratorium 3,889 1,394 — Tradable shares without trading moratorium 9,808 9,808 H shares listed on the Stock Exchange of Hong Kong Limited (“H Shares”) 5,177 5,177 — Tradable shares with trading moratorium 518 518 — Tradable shares without trading moratorium 4,659 4,659 Total 18,874 16,379

Reserves (Tables)

Reserves (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Reserves	Share Capital reserve (note (a)) Hedging reserve Statutory reserve (note (b)) Other reserves Retained Total RMB RMB RMB RMB RMB RMB million RMB Balance at January 1, 2020 37,070 (767 ) 24 782 (2,362 ) 17,882 52,629 Unrealised gains on cash flow hedges — — 158 — — — 158 Fair value movements in equity investments designated at fair value through other comprehensive income — — — — (203 ) — (203 ) Fair value changes of equity investments designated at fair value through other comprehensive income held by an associate — — — — 2 — 2 Actuarial gains on post-retirement benefit obligations — — — — (61 ) — (61 ) Loss for the year — — — — — (11,836 ) (11,836 ) Final 2019 dividend — — — — — (819 ) (819 ) At December 31, 2020 37,070 (767 ) 182 782 (2,624 ) 5,227 39,870 Balance at January 1, 2021 37,070 (767 ) 182 782 (2,624 ) 5,227 39,870 Unrealised gains on cash flow hedges — — (228 ) — — — (228 ) Fair value movements in equity investments designated at fair value through other comprehensive income — — — — (237 ) — (237 ) Fair value changes of equity investments designated at fair value through other comprehensive income held by an associate — — — — (7 ) — (7 ) Actuarial gains on post-retirement benefit obligations — — — — (79 ) — (79 ) Loss for the year — — — — — (12,214 ) (12,214 ) Issue of ordinary shares, net of transaction costs and tax 8,325 — — — — — 8,325 Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings — — — — (157 ) 157 — Transactions with non-controlling (689 ) — — — — — (689 ) At December 31, 2021 44,706 (767 ) (46 ) 782 (3,104 ) (6,830 ) 34,741 Notes: (a) Capital reserve Capital reserve mainly represents the difference between the fair value of the net assets injected and the nominal amount of the Company’s share capital issued in respect of the Group restructuring carried out in June 1996 for the purpose of the Company’s listing. (b) Statutory reserve According to the PRC Company Law, the Company is required to transfer a portion of the profits to the statutory reserve. The transfer to this reserve must be made before distribution of dividends to shareholders and when there are retained profits at the end of the financial year.

Notes to the Consolidated Sta_2

Notes to the Consolidated Statement of Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Notes to Statement of Consolidated Cash Flows	(a) Cash generated from operations 2021 2020 2019 RMB million RMB million RMB million (Loss)/profit before income tax (17,513 ) (16,488 ) 4,299 Adjustments for: Depreciation of property, plant and equipment 9,490 9,067 9,078 Depreciation of right-of-use 12,389 12,367 12,298 Depreciation of investment properties 10 12 25 Amortisation of intangible assets 210 239 143 Amortisation of other non-current 619 570 536 Gain on disposal of property, plant and equipment and right-of-use (719 ) (17 ) (22 ) Gain on disposal of an investment in subsidiaries, associates and joint ventures (142 ) — (64 ) Dividend income from equity investments at fair value through other comprehensive income (3 ) (12 ) (19 ) Dividend income from a financial asset at fair value through profit or loss (5 ) (6 ) (3 ) Share of results of associates 97 82 (265 ) Share of results of joint ventures 44 13 (17 ) Net foreign exchange (gains)/loss (1,506 ) (2,746 ) 890 Fair value losses/(gains), net: Financial asset at fair value through profit or loss 11 26 (25 ) COVID-19-related — (3 ) — Impairment charges 22 184 4 Impairment losses on financial assets, net 28 32 16 Interest expense 5,812 5,214 5,169 Operating profit before working capital changes 8,844 8,534 32,043 Changes in working capital Flight equipment spare parts 240 200 (457 ) Trade receivables 159 593 (275 ) Prepayments and other receivables (916 ) 2,893 (2,336 ) Contract liabilities (805 ) (6,686 ) 1,281 Restricted bank deposits — (6 ) 9 Trade and bills payables (766 ) (657 ) (163 ) Other payables and accruals (1,686 ) (983 ) 1,459 Other long-term liabilities 489 (2,174 ) (1,916 ) Post-retirement benefit obligations (11 ) (46 ) (125 ) Provision for lease return costs for aircraft and engines 280 (188 ) 617 Cash generated from operations 5,828 1,480 30,137
Summary of Major Non-cash Transactions	(b) Major non-cash 2021 2020 RMB million RMB million Additions to right-of-use 744 — Additions to right-of-use 18,202 7,191
Summary of Changes in Liabilities Arising from Financing Activities	(c) Changes in liabilities arising from financing activities Bank and other loans Lease liabilities RMB million RMB million At January 1, 2019 55,126 109,306 Changes from financing cash flows (3,427 ) (23,895 ) Foreign exchange movement 138 851 Disposal of a subsidiary — (10 ) New leases — 24,023 At December 31, 2019 51,837 110,275 At January 1, 2020 51,837 110,275 Changes from financing cash flows 36,173 (18,444 ) COVID-19-related — (3 ) Foreign exchange movement (115 ) (2,768 ) New leases — 7,191 At December 31, 2020 87,895 96,251 At January 1, 2021 87,895 96,251 Changes from financing cash flows 7,778 (15,725 ) COVID-19-related — — Other addition 702 486 Foreign exchange movement (584 ) (738 ) New leases — 18,202 At December 31, 2021 95,791 98,476
Disclosure Of Detailed Information About Cash Flow Information For Leases Explanatory	(d) Total cash outflow for leases The total cash outflow for leases included in the statement of cash flows is as follows: 2021 2020 2019 RMB million RMB million RMB million Within operating activities (383 ) (358 ) (631 ) Within investing activities (1,516 ) (1,183 ) (1,449 ) Within financing activities (18,838 ) (22,099 ) (27,789 )

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Capital Commitments	(a) The Group had the following capital commitments at the end of the reporting period: December 31, December 31, RMB million RMB million Contracted for: — Aircraft, engines and flight equipment (note i) 24,922 37,277 — Other property, plant and equipment 2,980 3,646 — Investments 2,163 1,335 30,065 42,258
Summary of Aged Analysis of Contracted Expenditures for Aircraft, Engines and Flight Equipment	(i) Contracted expenditures for the above aircraft, engines and flight equipment, including deposits prior to delivery, subject to future inflation increase built into the contracts were expected to be paid as follows: December 31, December 31, RMB million RMB million Within one year 9,530 13,542 In the second year 8,018 13,692 In the third year 7,374 7,109 Over three years — 2,934 24,922 37,277

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Nature of Related Parties	(a) Nature of related parties that do not control or controlled by the Group: Name of related party Relationship with the Group Eastern Air Group Finance Co., Ltd. (“Eastern Air Finance Company”) Associate of the Company Eastern Aviation Import & Export Co., Ltd. and its subsidiaries (“Eastern Import & Export”) Associate of the Company Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. (“Shanghai P&W”) Associate of the Company Eastern Aviation Advertising Service Co., Ltd. and its subsidiaries (“Eastern Advertising”) Associate of the Company Shanghai Collins Aviation Maintenance Service Co., Ltd. (“Collins Aviation”) Associate of the Company Shanghai Airlines Tours International (Group) Co., Ltd. and its subsidiaries (“Shanghai Airlines Tours”) Associate of the Company China Eastern Air Catering Investment Co., Limited and its subsidiaries Associate of the Company (“Eastern Air Catering”) CAE Melbourne Flight Training Pty Limited (“CAE Melbourne”) Joint venture of the Company Shanghai Technologies Aerospace Co., Ltd. (“Technologies Aerospace”) Joint venture of the Company Eastern China Kaiya System Integration Co., Ltd. (“China Kaiya”) Joint venture of the Company Xi An Cea Safran Landing Systems Services Co., Ltd. (“XIESA”) Joint venture of the Company CEA Development Co., Limited and its subsidiaries (“CEA Development”) Controlled by the same parent company Eastern Air Logistics Co., Ltd. and its subsidiaries (“Eastern Logistics”) Controlled by the same parent company Shanghai Eastern Airlines Investment Co., Ltd. and its subsidiaries (“Eastern Investment”) Controlled by the same parent company CES International Financial Leasing Corporation Limited and its subsidiaries (“CES Lease Company”) Controlled by the same parent company TravelSky Technology Limited (“TravelSky”) A key management personnel of the Company is a director of Travelsky Sichuan Airlines Co.,Ltd. (“Sichuan Air”) A key management personnel of the Company is a director of Sichuan Air Air France-KLM A key management personnel of the Company is a director of AFK Juneyao Airlines Co., Ltd and its subsidiaries (“Juneyao Air”) Shareholder who hold more than 5% of the company’s voting shares
Summary of Related Party Transactions	(b) Related party transactions Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Purchase of goods and services Payments on food and beverages* Eastern Air Catering (i ) 1,636 812 1,471 Eastern Import & Export (i ) 62 50 56 Handling charges for purchase of aircraft, flight equipment, flight equipment spare parts, other property, plant and flight equipment and repairs for aircraft and engines* Eastern Import & Export (i ) 135 132 142 Repairs and maintenance expense for aircraft and engines Shanghai P&W (i ) 973 1,180 1,762 Technologies Aerospace (i ) 179 184 221 Wheels & Brakes (i ) — 45 144 Shanghai Hute (i ) — 116 88 XIESA (i ) — 67 2 Payments on cabin cleaning services Eastern Advertising (i ) 3 9 22 Advertising expense* Eastern Advertising (i ) 25 26 29 Payments on system services China Kaiya (i ) 16 18 16 Equipment maintenance fee* Collins Aviation (i ) 36 33 45 CEA Development (i ) 48 81 98 Automobile maintenance service, aircraft maintenance, providing transportation automobile and other products* CEA Development (i ) 2 4 13 Property management and green maintenance expenses* CEA Development (i ) 185 195 205 Payments on hotel accommodation service* CEA Development (i ) 120 122 134 Shanghai Airlines Tours (i ) 40 10 23 Payments on construction and management agent* Eastern Investment (i ) 14 13 14 Payments on logistics services Eastern Import & Export (i ) — — 49 Eastern Logistics (i ) 103 115 53 Civil aviation information network services** TravelSky (i ) 230 552 753 Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Purchase of goods and services (continued) Flight equipment spare parts maintenance** CASC (i ) — 107 143 Flight training fee CAE Melbourne (i ) — 41 70 Payments on aviation transportation cooperation and support services** AFK (i ) 65 221 537 Payments on aviation transportation cooperation services Juneyao Air (i ) 4 2 2 Flight equipment spare parts maintenance and support services AFK (i ) 22 10 19 Bellyhold space operation cost* Eastern Logistics (i ) — — 310 Transfer of pilots Eastern Logistics (i ) — — 11 Cargo terminal business support services* Eastern Logistics (i ) 369 286 481 Bellyhold container management Eastern Logistics (i ) 13 13 13 Provision of services Contractual revenue from bellyhold space* (note) Eastern Logistics (i ) — — 3,826 Exclusive operation transportation in relation to the passenger aircraft cargo business* (note) Eastern Logistics (i ) 8,309 4,895 — Freight logistics support services* Eastern Logistics (i ) 192 185 135 Software system and support services Eastern Logistics (i ) 14 5 4 Transfer of pilots Eastern Logistics (i ) 29 — — Media royalty fee Eastern Advertising (i ) 14 14 15 Aviation transportation cooperation and support services** AFK (i ) 14 105 593 Aviation transportation cooperation services Juneyao Air (i ) 16 14 11 Transfer of pilots Juneyao Air (i ) 4 22 — Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Provision of services (continued) Flight equipment spare parts maintenance and support services Juneyao Air (i) 24 35 41 Aviation transportation cooperation services Sichuan Air (i) 10 — — Eastern Investment (i) 3 — — Sale of Goods Eastern Air Catering (ii) 48 — — Rental income Rental income for land and buildings under short-term leases* Eastern Air Catering (ii) 48 15 — Sichuan Air (ii) 9 — — CEA Development (ii) 5 — — Juneyao Air (ii) 4 — — Eastern Import & Export (ii) 3 — — Rental income for Intangible assets Eastern Logistics (ii) 5 — — Rental income for cargo terminal* Eastern Logistics (ii) 81 — — Lease Payments Lease payments for land and buildings* CEA Holding (ii) 7 36 40 Eastern Investment (ii) 210 98 83 Eastern Air Catering (ii) 2 — — Settlements of lease liabilities on aircraft and engines CES Lease Company (ii) 7,245 6,667 5,779 Lease payments for special vehicle and equipment* CEA Development (ii) 83 37 21 In 2021, the additional amount of right-of-use assets for the newly-introduced aircraft and engines from CES Lease Company was RMB11,061 million; the additional amount of right-of-use assets for the newly-leased land and buildings from Eastern Investment was RMB302 million; the additional amount of right-of-use assets for the newly-leased special vehicle and equipment from CEA Development was RMB195 million. In 2021, the interest amounts on lease liabilities due to CES Lease Company was RMB1,311 million; the interest amounts on lease liabilities due to Eastern Investment was RMB31 million; the interest amounts on lease liabilities due to CEA Development was RMB9 million. As at December 31, 2021, the lease liability due to CEA Development, Eastern Investment and Eastern Air Catering were RMB323 mi l Interest expense Interest expense on loans CEA Holding (iii) 41 32 27 Eastern Air Finance Company (iii) 21 5 5 Interest income Interest income on loans CAE Melbourne (iii) — 1 — Interest income on deposits Eastern Air Finance Company (iii) 20 24 15 Pricing policy and decision 2021 2020 2019 Nature of transaction Related party process RMB million RMB million RMB million Gains on disposal of equity Dispose 100% equity of China Eastern Airlines Grand Sichuan Air (i ) 97 — — Dispose 49% equity of Yunnan Civil Aviation Kaiya TravelSky (i ) 8 — — Dispose 27.5% equity of Beijing Xinghang Aviation Eastern Investment (i ) 29 — — Catering trolleys and aircraft on-board supplies Eastern Air Catering (i ) 123 — — Note: To address the business competition between the passenger aircraft cargo business of the Company and the all-cargo COVID-19’s “passenger-to-cargo (i) The Group’s pricing policies on goods and services purchased from and provided to related parties are mutually agreed between contract parties (ii) The Group’s pricing policies on related party lease payments are mutually agreed between contract parties. (iii) The Group’s pricing policies on related party interest rates are mutually agreed based on benchmark interest rates. * These related party transactions also constitute connected transactions or continuing connected transactions as defined in Chapter 14A of the Rules Governing the Listing of Securities on the Stock Exchange (the “Listing Rules”). ** This related party transaction constitutes a continuing connected transaction pursuant to the Rules Governing the Listing of Stocks on the Shanghai Stock Exchange.
Summary of Balances with Related Parties	(c) Balances with related parties (i) Amounts due from related parties December 31, 2021 December 31, 2020 RMB million RMB million Trade receivables Eastern Logistics 497 630 Juneyao Air 5 8 Eastern Air Catering 17 — Others 2 4 521 642 December 31, 2021 December 31, 2020 RMB million RMB million Prepayments and other receivables Eastern Import & Export 134 158 Technologies Aerospace 6 6 Eastern Air Catering 55 36 Eastern Advertising — 1 CEA Development 1 11 CEA Holding 10 228 CASC — 13 TravelSky 42 49 Juneyao Air 5 4 Eastern Air Finance Company 120 240 Others 9 22 382 768 (ii)  Amounts due to related parties December 31, 2021 December 31, 2020 RMB million RMB million Trade and bills payables Eastern Import & Export 472 363 Eastern Air Catering 583 266 Technologies Aerospace 59 95 CEA Development 81 96 Shanghai P&W 280 213 Collins Aviation 8 9 CEA Holding 23 28 CASC — 27 Shanghai Hute — 32 TravelSky 7 7 Wheels & Brakes — 14 Shanghai Airlines Tours — 1 Eastern Advertising 6 — Eastern Investment 1 74 XIESA — 32 Others 6 13 1,526 1,270 (ii) Amounts due to related parties (continued) December 31, 2021 December 31, 2020 RMB million RMB million Other payables and accruals Eastern Import & Export — 37 Eastern Air Catering 1 2 CEA Holding 68 99 CEA Development 15 1 Eastern Investment 61 61 CES Lease Company 63 189 CASC — 2 Others 5 7 213 398 December 31, 2021 December 31, 2020 RMB million RMB million Lease liabilities CES Lease Company 46,251 42,168 December 31, 2021 December 31, 2020 RMB million RMB million Other long-term liabilities Eastern Air Catering 64 — 64 — Except for the amounts due to CES Lease Company, which are related to the aircraft under leases, all other amounts due to related parties are interest-free and payable within normal credit terms given by trade creditors. (iii) Short-term deposits, loan and borrowings with related parties Average interest rate for the December 31, December 31, 2021 2020 2021 2020 RMB million RMB million Short-term deposits Eastern Air Finance Company 0.23 % 0.35 % 12,269 5,474 Short-term borrowings (included in borrowings) Eastern Air Finance Company 2.80 % 2.80 % 6,000 4,000 CEA Holding 2.80 % — 11,000 — Eastern Investment 2.80 % — 7,700 — Long-term borrowings (included in borrowings) CEA Holding — 3.86 % — 828 Loan to a joint venture CAE Melbourne 8.00 % 3.74 % 6 11
Summary of Key Management Compensation	(e) Key management compensation The compensation paid or payable to key management for employee services mainly comprising salaries and other short-term employee benefits were analysed as follows: 2021 2020 2019 RMB million RMB million RMB million Other payables and accruals Directors and supervisors 2 4 1 Senior management 1 1 8 3 5 9

Financial Instruments by Cate_2

Financial Instruments by Category (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Financial Instruments by Category	The group holds the following financial instruments: Note December 31, December 31, Financial assets RMB million RMB million Financial assets at amortised cost Trade receivables 29 974 1,124 Prepayments and other receivables 31 2,397 2,452 Cash and cash equivalents 32 12,950 7,651 Restricted bank deposits 32 12 12 Financial assets included in other non-current 142 150 Financial assets at fair value through other comprehensive income Equity investments designed at fair value through other comprehensive income 24 457 995 Financial assets at fair value through profit or loss 30 84 95 Derivative financial instruments 25 — 399 17,016 12,878 Note December 31, December 31, Financial liabilities RMB million RMB million Liabilities at amortised cost Trade and bills payables 2,454 3,220 Financial liabilities included in other payables and accruals 13,484 15,790 Borrowings 37 95,791 87,895 Lease liabilities 18(b) 98,476 96,251 Derivative financial instruments 25 46 141 210,251 203,297

Fair Value and Fair Value Hie_2

Fair Value and Fair Value Hierarchy of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [Line Items]
Summary of Financial Instruments Not Measured at Fair Value	The carrying amounts and fair values of the Group’s financial instruments, other than those with carrying amounts that reasonably approximate to fair values, were as follows: December 31, 2021 December 31, 2020 Carrying Fair value Carrying Fair value RMB million RMB million RMB million RMB million Financial assets Equity investments designated at fair value through other comprehensive income 457 457 995 995 Financial asset at fair value through profit or loss 84 84 95 95 Derivative financial assets — — 399 399 Deposits relating to aircraft held under leases included in other non-current 140 139 143 142 Total 681 680 1,632 1,631 Financial liabilities Derivative financial liabilities 46 46 141 141 Long-term borrowings 50,792 49,971 30,745 32,355 Lease liabilities 82,126 81,232 82,178 82,653 Total 132,964 131,249 113,064 115,149
Summary of Significant Unobservable Inputs to the Valuation of Financial Instruments Together with a Quantitative Sensitivity Analysis	Set out below is a summary of significant unobservable inputs to the valuation of financial instruments together with a quantitative sensitivity analysis as at December 31, 2021 and 2020: Valuation technique Significant unobservable input Range Sensitivity of fair value to the Unlisted equity investments Valuation multiples Discount for lack of marketability 20%(December 31, 1% (December 31, 2020: 1%) increase/decrease in multiple would result in increase/ decrease in fair value by RMB 3 million (December 31, 2020: RMB 5 million)
Disclosure of Fair Value of Financial Instruments	The following tables illustrate the fair value measurement hierarchy of the Group’s financial instruments: Assets and liabilities measured at fair value: As at December 31, 2021 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) Total Assets Equity investments designated at fair value through other comprehensive income 237 — 220 457 Financial asset at fair value through profit or loss 84 — — 84 Total 321 — 220 541 Liabilities Derivative financial liabilities — Interest rate swaps — 46 — 46 Total — 46 — 46 As at December 31, 2020 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) Total Assets Equity investments designated at fair value through other comprehensive income 457 — 538 995 Derivative financial assets — Forward fuel contracts — 399 — 399 Financial asset at fair value through profit or loss 95 — — 95 Total 552 399 538 1,489 Liabilities Derivative financial liabilities — Interest rate swaps — 140 — 140 — Forward fuel contracts — 1 — 1 Total — 141 — 141
Summary of the Changes in Level 3 Items	The following table presents the changes in level 3 items for the year ended December 31, 2021: Equity investments designated at fair value through other comprehensive income RMB million Opening balance as at January 1, 20 21 538 Disposals (75 ) Recognised in other comprehensive income – net (243 ) Closing balance as at December 31, 2021 220
At fair value [member]
Statement [Line Items]
Disclosure of Fair Value of Financial Instruments	Assets and liabilities for which fair values are disclosed: As at December 31, 2021 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) RMB million Total Assets Deposits relating to aircraft held under leases included in other non-current — 139 — 139 Liabilities Long-term borrowings — 49,971 — 49,971 Lease liabilities — 81,232 — 81,232 — 131,203 — 131,203 As at December 31, 2020 Fair value measurement using Quoted prices Significant (Level 2) Significant (Level 3) RMB million Total Assets Deposits relating to aircraft held under leases included in other non-current — 142 — 142 Liabilities Long-term borrowings 4,936 27,419 — 32,355 Lease liabilities — 82,653 — 82,653 4,936 110,072 115,008

Financial Risk Management (Tabl

Financial Risk Management (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [Line Items]
Summary of Contractual Undiscounted Cash Flows of Financial Liabilities	The table below analyses the Group’s financial liabilities that will be settled into relevant maturity groupings based on the remaining period at the reporting date to the contractual maturity date. The amounts disclosed in the table are the contractual undiscounted cash flows. Less than 1 year 1 to 2 years 2 to 5 years Over 5 years Total At December 31, 2021 RMB million RMB million RMB million RMB million RMB million Borrowings 46,633 15,668 18,490 22,306 103,097 Derivative financial instruments 1 — 45 — 46 Lease liabilities 19,025 17,320 43,259 31,192 110,796 Trade, bills and other payables 15,939 — — — 15,939 Total 81,598 32,988 61,794 53,498 229,878 Less than 1 year 1 to 2 years 2 to 5 years Over 5 years Total At December 31, 2020 RMB million RMB million RMB million RMB million RMB million Borrowings 58,989 6,946 19,126 7,779 92,840 Derivative financial instruments 3 7 132 — 142 Lease liabilities 17,443 16,009 40,241 37,319 111,012 Trade, bills and other payables 19,010 — — — 19,010 Total 95,445 22,962 59,499 45,098 223,004
Summary of Market Equity Indices	The market equity indices for the following stock exchanges, at the close of business of the nearest trading day in the year to the end of the reporting period, and their respective highest and lowest points during the year were as follows: December 31, 2021 High/Low 2021 December 31, 2020 High/Low 2020 Hong Kong - Hang Seng Index 23,398 31,183/22,665 27,231 29,056/21,696 Shanghai - A Share Index 3,640 3,732/3,313 3,640 3,640/2,788
Summary of Equity Investments at Fair Value Through Other Comprehensive Income, Impact Deemed to be on Fair Value Reserve	The following table demonstrates the sensitivity to every 10% change in the fair values of the equity investments, with all other variables held constant, based on their carrying amounts at the end of the reporting period. For the purpose of this analysis, for the equity investments at fair value through other comprehensive income, the impact is deemed to be on the fair value reserve as at December 31, 2021. 2021 Carrying amount of equity Increase/ (decrease) in profit or loss Increase/(decrease) in comprehensive income RMB million RMB million RMB million Investments listed in: Hong Kong — Equity investment designated at fair value through other comprehensive income 237 — 18/ (18) Shanghai — Financial asset at fair value through profit or loss 84 6/ (6) — Unlisted investments at fair value: — Equity investment designated at fair value through other comprehensive income 220 — 17/ (17) 2020 Carrying amount of equity Increase/ (decrease) in profit or loss Increase/(decrease) in comprehensive income RMB million RMB million RMB million Investments listed in: Hong Kong — Equity investment designated at fair value through other comprehensive income 457 — 34/ (34) Shanghai — Financial asset at fair value through profit or loss 95 7/ (7) — Unlisted investments at fair value: — Equity investment designated at fair value through other comprehensive income 538 — 40/ (40)
Summary of Debt Ratio	The Group monitors capital on the basis of the debt ratio, which is calculated as total liabilities divided by total assets. The debt ratios as at the end of the reporting periods were as follows: December 31, December 31, RMB million RMB million Total liabilities 231,638 225,496 Total assets 288,790 284,650 Debt ratio 80 % 79 %
Summary of Fuel price risk	2021 2020 Effect on other comprehensive income Effect on other comprehensive income RMB million RMB million Fuel forward contracts — 62
Summary of Credit Quality and the Maximum Exposure to Credit Risk Based on the Groups Credit Policy	The amounts presented are gross carrying amounts for financial assets and the exposure to credit risk. As at December 31, 2021 12-month Lifetime ECLs Stage 1 Stage 2 Stage 3 Simplified approach Total RMB million RMB million RMB million RMB million RMB million Trade receivable* — — 40 934 974 Financial assets included in prepayments and other receivables - Normal ** 2,202 271 232 — 2,705 Restricted bank deposits - Not yet past due 12 — — — 12 Cash and cash equivalents - Not yet past due 12,950 — — — 12,950 As at December 31, 2020 12-month ECLs Lifetime ECLs Stage 1 Stage 2 Stage 3 Simplified approach Total RMB million RMB million RMB million RMB million RMB million Trade receivable* — — 47 1,077 1,124 Financial assets included in prepayments and other receivables - Normal ** 2,067 274 111 — 2,452 Restricted bank deposits - Not yet past due 12 — — — 12 Cash and cash equivalents - Not yet past due 7,651 — — — 7,651
Foreign currency risk.
Statement [Line Items]
Summary of Risk	The following tables detail the Group’s exposure to major currency risk at the reporting date: 2021 USD EUR SGD JPY RMB million RMB million RMB million RMB million Trade receivables 11 5 — 3 Cash and cash equivalents 96 7 28 5 Other receivables 32 — 1 11 Other non-current 1,428 — — — Trade and other payables (118 ) (12 ) — — Lease liabilities (30,710 ) (10 ) (6 ) (67 ) Borrowings (13 ) (1,957 ) (2,371 ) — 2020 USD EUR SGD JPY RMB million RMB million RMB million RMB million Trade receivables 10 2 — 2 Cash and cash equivalents 968 4 3 3 Other receivables 115 3 1 12 Other non-current 150 — — — Trade and other payables (108 ) (1 ) — — Lease liabilities (36,267 ) (8 ) (85 ) (142 ) Borrowings (375 ) (2,664 ) (2,466 ) (3,162 )
Summary of Sensitivity Analysis of Risk	The following tables indicate the approximate change in the Group’s consolidated statement of profit or loss and other comprehensive income in response to a 1% appreciation or depreciation of the RMB against the following major currencies at the reporting date: 2021 2020 Effect on profit or loss Effect on other comprehensive income Effect on profit or loss Effect on other comprehensive income RMB million RMB million RMB million RMB million If RMB (weakens)/strengthens against USD (222 )/ 222 — (266 )/266 — If RMB (weakens)/strengthens Against JPY (0.36 )/0.36 — (25 )/25 — If RMB (weakens)/strengthens Against EUR (15 )/15 — (20 )/20 — If RMB (weakens)/strengthens against SGD (18 )/18 — (19 )/19 —
Interest Rate Risk [Member]
Statement [Line Items]
Summary of Risk	The following tables detail the interest rate profiles of the Group’s interest-bearing financial instruments at the reporting date: December 31, December 31, RMB million RMB million Floating rate instruments Cash and cash equivalents 12,950 7,651 Restricted bank deposits 12 12 Borrowings (26,146 ) (13,328 ) Lease liabilities (62,406 ) (44,541 ) Interest rate swaps at notional amount 3,154 4,504 December 31, December 31, RMB million RMB million Fixed rate instruments Borrowings (68,943 ) (74,567 ) Lease liabilities (35,584 ) (51,710 )
Summary of Sensitivity Analysis of Risk	The following table indicates the approximate change in the Group’s profit or loss and other comprehensive income, taking the interest rate swap into consideration, if interest rate had been 25 basis points higher with all other variables held constant: 2021 2020 Effect on profit or loss Effect on other comprehensive income Effect on profit or loss Effect on other comprehensive income RMB million RMB million RMB RMB million Floating rate instruments (142 ) 6 (94 ) 8

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Summary of Property, Plant and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2021
Owned aircraft and engines [Member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Estimated useful lives of property, plant and equipment	20 years
Other flight equipment, including rotables [Member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Estimated useful lives of property, plant and equipment	10 years
Bottom of range [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Estimated useful lives of property, plant and equipment	8 years
Bottom of range [member] | Other property, plant and equipment [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Estimated useful lives of property, plant and equipment	3 years
Top of range [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Estimated useful lives of property, plant and equipment	35 years
Top of range [member] | Other property, plant and equipment [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Estimated useful lives of property, plant and equipment	20 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Summary of Investment Property Estimated Useful Lives (Detail) - Buildings [member]	12 Months Ended
	Dec. 31, 2021
Bottom of range [member]
Disclosure of detailed information about investment property [Line Items]
Estimated useful lives of investment properties	20 years
Top of range [member]
Disclosure of detailed information about investment property [Line Items]
Estimated useful lives of investment properties	35 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Summary of estimated useful lives of the assets under right of use assets (Detail) - Right-of-use assets [member]	12 Months Ended
	Dec. 31, 2021
Aircraft and engines under leases [member] | Bottom of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	5 years
Aircraft and engines under leases [member] | Top of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	20 years
Buildings [member] | Bottom of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	2 years
Buildings [member] | Top of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	10 years
Prepayments for land use rights [member] | Bottom of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	40 years
Prepayments for land use rights [member] | Top of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	50 years
Others [member] | Bottom of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	2 years
Others [member] | Top of range [member]
Disclosure Of Estimated Useful Lives Of The Assets Under Right Of Use Assets [Line Items]
Lease terms and the estimated useful lives right-of-use assets	5 years

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Additional Information (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement [Line Items]
Amount current liabilities exceeded current assets	¥ (57,981)	¥ (77,310)
Profit (loss) for the year	¥ (13,284)	¥ (12,561)	¥ 3,480
Bottom of range [member]
Statement [Line Items]
Proportion of ownership interest in associate	20.00%
Top of range [member]
Statement [Line Items]
Proportion of ownership interest in associate	50.00%

Operating Segment Information -

Operating Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021RegionSegment
Disclosure of operating segments [abstract]
Number of reportable operating segments | Segment	1
Number of geographical areas where the group's business operates | Region	3

Operating Segment Information_2

Operating Segment Information - Summary of Segment Results (Detail) - CNY (¥) ¥ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [Line Items]
Reportable segment revenue from external customers		¥ 67,127	¥ 58,639	¥ 120,860
Intersegment sales		0
Reportable segment revenue		67,127	58,639	120,860
Reportable segment (loss)/profit before income tax		(17,513)	(16,481)	4,302
Other segment information
Depreciation and amortization		22,718	22,248	22,077
Impairment charges/ Impairment losses on financial assets, net		50	216	20
Interest income		339	166	96
Interest expense		5,812	5,214	5,169
Capital expenditure		31,015	18,417	43,156
Reportable segment assets		286,548	282,408
Reportable segment liabilities		231,638	225,496
Eliminations [member]
Disclosure of operating segments [Line Items]
Reportable segment revenue from external customers		0
Intersegment sales		(1,006)	(1,499)	(2,052)
Reportable segment revenue		(1,006)	(1,499)	(2,052)
Reportable segment (loss)/profit before income tax		0
Other segment information
Depreciation and amortization		0
Impairment charges/ Impairment losses on financial assets, net		0
Interest income		(15)	(13)	(13)
Interest expense		(15)	(13)	(13)
Capital expenditure		0
Reportable segment assets		(1,606)	(1,736)
Reportable segment liabilities		(1,606)	(1,736)
Unallocated [member]
Disclosure of operating segments [Line Items]
Reportable segment revenue from external customers		0
Intersegment sales		0
Reportable segment revenue		0
Reportable segment (loss)/profit before income tax		2	(103)	393
Other segment information
Depreciation and amortization		0
Impairment charges/ Impairment losses on financial assets, net		0
Interest income		0
Interest expense		0
Capital expenditure		0
Reportable segment assets	[1]	2,802	3,606
Reportable segment liabilities	[1]	47	142
Airline transportation operations [member]
Disclosure of operating segments [Line Items]
Reportable segment revenue from external customers		66,812	58,337	119,240
Intersegment sales		0
Reportable segment revenue		66,812	58,337	119,240
Reportable segment (loss)/profit before income tax		(17,889)	(17,062)	2,745
Other segment information
Depreciation and amortization		22,441	21,965	21,816
Impairment charges/ Impairment losses on financial assets, net		48	215	20
Interest income		354	178	108
Interest expense		5,811	5,212	5,152
Capital expenditure		30,846	17,778	42,853
Reportable segment assets		280,976	275,028
Reportable segment liabilities		230,799	224,862
Other segments [member]
Disclosure of operating segments [Line Items]
Reportable segment revenue from external customers		315	302	1,620
Intersegment sales		1,006	1,499	2,052
Reportable segment revenue		1,321	1,801	3,672
Reportable segment (loss)/profit before income tax		374	684	1,164
Other segment information
Depreciation and amortization		277	283	261
Impairment charges/ Impairment losses on financial assets, net		2	1
Interest income		0	1	1
Interest expense		16	15	30
Capital expenditure		169	639	¥ 303
Reportable segment assets		4,376	5,510
Reportable segment liabilities		¥ 2,398	¥ 2,228
[1]	Unallocated assets primarily represent investments in associates and joint ventures, derivative financial instruments, financial asset at fair value through profit or loss and equity instruments designated at fair value through other comprehensive income. Unallocated results primarily represent the share of results of associates and joint ventures, fair value changes of financial asset at fair value through profit or loss and dividend income relating to equity investments at fair value through profit or loss.

Operating Segment Information_3

Operating Segment Information - Summary of Revenues by Geographical Area (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of geographical areas [Line Items]
Revenue	¥ 67,127	¥ 58,727	¥ 120,986
Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) [Member]
Disclosure of geographical areas [Line Items]
Revenue	56,133	45,479	80,058
International [member]
Disclosure of geographical areas [Line Items]
Revenue	10,553	12,759	37,082
Regional (Hong Kong, Macau and Taiwan) [member]
Disclosure of geographical areas [Line Items]
Revenue	¥ 441	¥ 489	¥ 3,846

Operating Segment Information_4

Operating Segment Information - Summary of Reconciliation of Reportable Segment Revenues, (Loss)/Profit and Assets (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [abstract]
Reportable segment revenue	¥ 67,127	¥ 58,639	¥ 120,860
- Reclassification of taxes relating to the expired tickets	0	88	126
Consolidated revenue	67,127	58,727	120,986
(Loss)/profit before income tax
Reportable segment (loss)/profit	(17,513)	(16,481)	4,302
- Differences in depreciation charges for aircraft and engines due to different depreciation lives	0	(7)	(3)
Consolidated (loss)/profit before income tax	(17,513)	(16,488)	¥ 4,299
Assets
Reportable segment assets	286,548	282,408
- Differences in depreciation charges for aircraft and engines due to different depreciation lives	0	0
- Difference in intangible asset arising from the acquisition of Shanghai Airlines	2,242	2,242
Consolidated assets	¥ 288,790	¥ 284,650

Revenue - Summary of Revenue (D

Revenue - Summary of Revenue (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of revenue [line items]
Revenue from contract with customers	¥ 66,887	¥ 58,470	¥ 120,796
Revenue	67,127	58,727	120,986
Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) [member]
Disclosure of revenue [line items]
Revenue from contract with customers	55,893	45,222	79,868
International [member]
Disclosure of revenue [line items]
Revenue from contract with customers	10,553	12,759	37,082
Regional (Hong Kong, Macau and Taiwan) [member]
Disclosure of revenue [line items]
Revenue from contract with customers	441	489	3,846
Operating segments [member]
Disclosure of revenue [line items]
Revenue from contract with customers	66,887	58,470	120,796
Unallocated [member]
Disclosure of revenue [line items]
Revenue from contract with customers	1,006	1,499	2,052
Eliminations [member]
Disclosure of revenue [line items]
Revenue from contract with customers	(1,006)	(1,499)	(2,052)
Passenger [member]
Disclosure of revenue [line items]
Revenue from contract with customers	54,105	49,215	110,416
Cargo And Mail [member]
Disclosure of revenue [line items]
Revenue from contract with customers	8,309	4,895	3,826
Ground Service [member]
Disclosure of revenue [line items]
Revenue from contract with customers	756	818	1,180
Other income [member]
Disclosure of revenue [line items]
Revenue from contract with customers	1,602	1,336	2,889
Rental Income [member]
Disclosure of revenue [line items]
Revenue from contract with customers	240	257	190
Ticket Cancellation and Commission [member]
Disclosure of revenue [line items]
Revenue from contract with customers	2,115	2,206	2,485
Airline transportation operations [member]
Disclosure of revenue [line items]
Revenue from contract with customers	66,572	58,168	119,176
Airline transportation operations [member] | Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) [member]
Disclosure of revenue [line items]
Revenue from contract with customers	55,578	44,920	78,248
Airline transportation operations [member] | International [member]
Disclosure of revenue [line items]
Revenue from contract with customers	10,553	12,759	37,082
Airline transportation operations [member] | Regional (Hong Kong, Macau and Taiwan) [member]
Disclosure of revenue [line items]
Revenue from contract with customers	441	489	3,846
Airline transportation operations [member] | Operating segments [member]
Disclosure of revenue [line items]
Revenue from contract with customers	66,572	58,168	119,176
Airline transportation operations [member] | Unallocated [member]
Disclosure of revenue [line items]
Revenue from contract with customers	0
Airline transportation operations [member] | Eliminations [member]
Disclosure of revenue [line items]
Revenue from contract with customers	0
Airline transportation operations [member] | Passenger [member]
Disclosure of revenue [line items]
Revenue from contract with customers	54,105	49,215	110,416
Airline transportation operations [member] | Cargo And Mail [member]
Disclosure of revenue [line items]
Revenue from contract with customers	8,309	4,895	3,826
Airline transportation operations [member] | Ground Service [member]
Disclosure of revenue [line items]
Revenue from contract with customers	756	818	1,180
Airline transportation operations [member] | Other income [member]
Disclosure of revenue [line items]
Revenue from contract with customers	1,287	1,034	1,269
Airline transportation operations [member] | Ticket Cancellation and Commission [member]
Disclosure of revenue [line items]
Revenue from contract with customers	2,115	2,206	2,485
Other Operation [member]
Disclosure of revenue [line items]
Revenue from contract with customers	315	302	1,620
Other Operation [member] | Domestic (the PRC, excluding Hong Kong, Macau and Taiwan) [member]
Disclosure of revenue [line items]
Revenue from contract with customers	315	302	1,620
Other Operation [member] | Operating segments [member]
Disclosure of revenue [line items]
Revenue from contract with customers	315	302	1,620
Other Operation [member] | Unallocated [member]
Disclosure of revenue [line items]
Revenue from contract with customers	1,006	1,499	2,052
Other Operation [member] | Eliminations [member]
Disclosure of revenue [line items]
Revenue from contract with customers	(1,006)	(1,499)	(2,052)
Other Operation [member] | Other income [member]
Disclosure of revenue [line items]
Revenue from contract with customers	315	302	1,620
Contracts with customers [member]
Disclosure of revenue [line items]
Revenue from contract with customers	¥ 66,887	¥ 58,470	¥ 120,796

Revenue - Schedule of Revenue R

Revenue - Schedule of Revenue Recognized in Current Reporting Period that were Included in Contract Liabilities (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Passenger transportation services [member]
Disclosure of revenue that was included in contract liability [line items]
Revenue recognised that was included in contract liabilities at the beginning of the year	¥ 2,979	¥ 6,699

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of revenue that was included in contract liability [line items]
Unredeemed points awarded under the Group's frequent flyer programmes	¥ 1,492	¥ 1,781
Cargo And Mail [member]
Disclosure of revenue that was included in contract liability [line items]
Description of when entity typically satisfies performance obligations	The performance obligation is satisfied as services are rendered and payment is generally due within 30 days after the end of each month.
Passenger [member]
Disclosure of revenue that was included in contract liability [line items]
Description of when entity typically satisfies performance obligations	The performance obligation is satisfied upon transportation service provided. Payment in advance is required and reflected in sales in advance of carriage or frequent flyer programme, both of which are included in contract liabilities.
Ground Service [member]
Disclosure of revenue that was included in contract liability [line items]
Description of when entity typically satisfies performance obligations	The performance obligation is satisfied as services are rendered and payment is generally due within 45 days from the date of billing.
Ticket Cancellation and Commission [member]
Disclosure of revenue that was included in contract liability [line items]
Description of when entity typically satisfies performance obligations	The performance obligation is satisfied as the process of ticket cancellation or sales is completed and consideration normally has been received before the services are rendered.

Revenue - Summary Of Accrual an

Revenue - Summary Of Accrual and Release (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accrual and release [abstract]
At January 1	¥ 1,966	¥ 2,245
Deferred during the year	945	843
Recognised as revenue during the year	(1,250)	(1,122)
At December 31	1,661	1,966
Less: the related pending output value added tax therein	(169)	(185)
Accrual and release	¥ 1,492	¥ 1,781

Other Operating Income and Ga_3

Other Operating Income and Gains - Summary of Other Operating Income and Gains (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Co-operation routes income	¥ 3,696	¥ 3,650	¥ 5,436
Routes subsidy income	383	372	353
Other subsidy income	803	1,326	535
Gain on disposal of items of property, plant and equipment and right-of-use assets	742	55	40
Gain on disposal of subsidiaries, associates and joint ventures	142	0	64
Compensation from ticket sales agents	63	53	331
Others	250	242	443
Other operating income and gains	¥ 6,079	¥ 5,698	¥ 7,202

Operating (Loss)_ Profit - Summ

Operating (Loss)/ Profit - Summary of Operating Profit (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Amortization of intangible assets	¥ 210	¥ 239	¥ 143
Depreciation of property, plant and equipment (Note 16)	9,490	9,067	9,078
Depreciation of right-of-use assets (Note 18(a))	12,389	12,367	12,298
Depreciation of investment properties (Note 17)	10	12	25
Amortisation of long-term deferred assets included in other non-current assets	619	570	536
Impairment charge on property, plant and equipment (Note 9)	1	31	4
Write-down of flight equipment spare parts to net realisable value (Note 9)	21	153	0
Consumption of flight equipment spare parts	1,218	1,135	1,013
Auditors' remuneration	¥ 12	¥ 17	¥ 18

Wages, Salaries and Benefits -

Wages, Salaries and Benefits - Summary of Wages, Salaries and Benefits (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of defined benefit plans [Line Items]
Wages, salaries, bonuses and allowances	¥ 15,776	¥ 16,412	¥ 19,385
Employee welfare and benefits	435	128	143
Pension	2,412	2,149	2,571
Medical insurance	982	725	789
Staff housing fund	1,265	1,195	1,056
Staff housing allowances	186	214	186
Early retirement benefits	5	4	22
Wages and salaries	21,061	20,827	24,152
Fees	620	460	805
Salaries, allowances and benefits in kind	1,616	2,906	665
Performance related bonuses	0
Pension scheme contributions	52	61	21
Total	2,288	3,427	1,491
Shao Ruiqing [Member]
Disclosure of defined benefit plans [Line Items]
Fees	100
Salaries, allowances and benefits in kind	0
Performance related bonuses	0
Pension scheme contributions	0
Total	100
Executive directors [Member] | Liu Shaoyong [member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	0
Performance related bonuses	0		0
Pension scheme contributions	0
Total	0
Executive directors [Member] | Ma Xulun [member]
Disclosure of defined benefit plans [Line Items]
Performance related bonuses			0
Executive directors [Member] | Wang Junjin [member]
Disclosure of defined benefit plans [Line Items]
Fees
Salaries, allowances and benefits in kind
Performance related bonuses			0
Pension scheme contributions
Total
Executive directors [Member] | Li Yangmin [member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	0
Performance related bonuses	0		0
Pension scheme contributions	0
Total	0
Executive directors [Member] | Tang Bing [Member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	0
Performance related bonuses	0		0
Pension scheme contributions	0
Total	0
Executive directors [Member] | Yuan Jun [member]
Disclosure of defined benefit plans [Line Items]
Fees
Salaries, allowances and benefits in kind
Performance related bonuses			0
Pension scheme contributions
Total			0
Executive directors [Member] | Lin Wanli [member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	0
Performance related bonuses	0
Pension scheme contributions	0
Total	0
Executive directors [Member] | Jiang Jiang [Member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	0	2,325
Performance related bonuses	0
Pension scheme contributions	0	36
Total	0	2,361
Independent Non-executive Directors [Member] | Lin Wanli [member]
Disclosure of defined benefit plans [Line Items]
Fees
Salaries, allowances and benefits in kind
Performance related bonuses			0
Pension scheme contributions
Total
Independent Non-executive Directors [Member] | Li Ruoshan [Member]
Disclosure of defined benefit plans [Line Items]
Fees			200
Performance related bonuses			0
Total			200
Independent Non-executive Directors [Member] | Ma Weihua [member]
Disclosure of defined benefit plans [Line Items]
Fees			200
Performance related bonuses			0
Total			200
Independent Non-executive Directors [Member] | Shao Ruiqing [Member]
Disclosure of defined benefit plans [Line Items]
Fees		200	200
Salaries, allowances and benefits in kind
Performance related bonuses			0
Pension scheme contributions
Total		200	200
Independent Non-executive Directors [Member] | Cai Hongping [member]
Disclosure of defined benefit plans [Line Items]
Fees	200	200	200
Salaries, allowances and benefits in kind	0
Performance related bonuses	0		0
Pension scheme contributions	0
Total	200	200	200
Independent Non-executive Directors [Member] | Dong Xuebo [member]
Disclosure of defined benefit plans [Line Items]
Fees	80	60	5
Salaries, allowances and benefits in kind	0
Performance related bonuses	0		0
Pension scheme contributions	0
Total	80	60	5
Independent Non-executive Directors [Member] | Sun Zheng [Member]
Disclosure of defined benefit plans [Line Items]
Fees	120
Salaries, allowances and benefits in kind	0
Performance related bonuses	0
Pension scheme contributions	0
Total	120
Independent Non-executive Directors [Member] | Lu Xiongwen [Member]
Disclosure of defined benefit plans [Line Items]
Fees	120
Salaries, allowances and benefits in kind	0
Performance related bonuses	0
Pension scheme contributions	0
Total	120
Supervisors [member] | Xi Sheng [member]
Disclosure of defined benefit plans [Line Items]
Fees
Salaries, allowances and benefits in kind
Performance related bonuses			0
Pension scheme contributions
Total
Supervisors [member] | Gao Feng [member]
Disclosure of defined benefit plans [Line Items]
Fees
Salaries, allowances and benefits in kind		536	665
Performance related bonuses
Pension scheme contributions		23	21
Total		559	686
Supervisors [member] | Li Jinde [member]
Disclosure of defined benefit plans [Line Items]
Performance related bonuses			0
Supervisors [member] | Fang Zhaoya [Member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind
Performance related bonuses	0		¥ 0
Pension scheme contributions
Total
Supervisors [member] | Zhou Huaxin [Member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	534	45
Performance related bonuses	0
Pension scheme contributions	21	2
Total	555	¥ 47
Supervisors [member] | Guo Lijun [Member]
Disclosure of defined benefit plans [Line Items]
Fees	0
Salaries, allowances and benefits in kind	1,082
Performance related bonuses	0
Pension scheme contributions	31
Total	¥ 1,113

Wages, Salaries and Benefits _2

Wages, Salaries and Benefits - Summary of Wages, Salaries and Benefits (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2021
Classes of employee benefits expense [abstract]
Vested period on entitlement of an eligible employee	20 years

Wages, Salaries and Benefits _3

Wages, Salaries and Benefits - Summary of Five Highest Paid Individuals (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2021CNY (¥)	Dec. 31, 2020CNY (¥)	Dec. 31, 2019CNY (¥)Aircraft
Disclosure of individuals with highest emoluments [Line Items]
Wages, salaries, bonuses and allowances	¥ 15,776,000	¥ 16,412,000	¥ 19,385,000
Performance related bonuses	0		0
Total	21,061,000	20,827,000	24,152,000
Five Highest Paid Individuals [Member]
Disclosure of individuals with highest emoluments [Line Items]
Wages, salaries, bonuses and allowances	8,537	10,495	11,413,000
Pension scheme contributions	185	172	185,000
Total	¥ 8,722,000	¥ 10,667,000	¥ 11,598,000
Five Highest Paid Individuals [Member] | HK$2,000,001 to HK$2,500,000 [Member]
Disclosure of individuals with highest emoluments [Line Items]
Number of individuals	5	2	2
Five Highest Paid Individuals [Member] | HK$2,500,001 to HK$3,000,000 [Member]
Disclosure of individuals with highest emoluments [Line Items]
Number of individuals	0	3	2
Five Highest Paid Individuals [Member] | HK$3,000,001 to HK$3,500,000 [Member]
Disclosure of individuals with highest emoluments [Line Items]
Number of individuals	0	0	1

Wages, Salaries and Benefits _4

Wages, Salaries and Benefits - Summary of Information about Benefits of Directors (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Information About Benefits Of Directors [Abstract]
Fees	¥ 620	¥ 460	¥ 805
Salaries, allowances and benefits in kind	1,616	2,906	665
Performance related bonuses
Pension scheme contributions	52	61	21
Total	¥ 2,288	¥ 3,427	¥ 1,491

Wages, Salaries and Benefits _5

Wages, Salaries and Benefits - Additional Information (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Directors, supervisors and five highest paid individuals [member]
Disclosure of defined benefit plans [Line Items]
Emoluments paid by the Group	¥ 0	¥ 0	¥ 0

Impairment Charges - Summary of

Impairment Charges - Summary of Impairment Charges (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of impairment loss and reversal of impairment loss [abstract]
Impairment charge on property, plant and equipment	¥ 1	¥ 31	¥ 4
Write-down of flight equipment spare parts to net realisable value	21	153	0
Impairment charges	¥ 22	¥ 184	¥ 4

Impairment Losses on Financia_3

Impairment Losses on Financial Assets, Net - Summary of Impairment Losses on Financial Assets, Net (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of impairment loss and reversal of impairment loss [abstract]
Impairment losses on trade receivable, net	¥ 3	¥ 15	¥ (6)
Impairment losses on other receivables	25	17	22
Reversal of impairment loss	¥ 28	¥ 32	¥ 16

Finance Income - Summary of Fin

Finance Income - Summary of Finance Income (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Interest income	¥ 339	¥ 166	¥ 96
Foreign exchange gains, net (note 12(b))	1,619	2,494
Total Finance income	¥ 1,958	¥ 2,660	¥ 96

Finance Costs - Summary of Fina

Finance Costs - Summary of Finance Costs (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Interest on bank borrowings	¥ 1,946	¥ 1,112	¥ 1,149
Interest relating to lease liabilities	3,113	3,655	3,894
Interest relating to post-retirement benefit obligations	83	85	92
Interest relating to provision for lease return costs for aircraft and engines	278	283	270
Interest on bonds and debentures	842	632	520
Interest relating to interest rate swap contracts	17	4	(68)
Less: amounts capitalized into advanced payments on acquisition of aircraft	(467)	(558)	(687)
Interest expense	5,812	5,213	5,170
Foreign exchange losses, net	0	0	990
Total Finance costs	¥ 5,812	¥ 5,213	¥ 6,160

Finance Costs - Summary of Fi_2

Finance Costs - Summary of Finance Costs (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Average interest rate used for interest capitalisation	3.57%	3.55%	3.51%

Income Tax - Summary of Income

Income Tax - Summary of Income Tax Charged to Profit or Loss (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Major components of tax expense (income) [abstract]
Current	¥ 143	¥ 222	¥ 942
Deferred	(4,372)	(4,149)	(123)
Income tax expense	¥ (4,229)	¥ (3,927)	¥ 819

Income Tax - Additional Informa

Income Tax - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of income taxes [Line Items]
Income tax rate	25.00%	25.00%	25.00%
Hong Kong [member]
Disclosure of income taxes [Line Items]
Income tax rate	16.50%	16.50%	16.50%
China Eastern Airlines Yunnan Co., Ltd. [member]
Disclosure of income taxes [Line Items]
Income tax rate	15.00%
China Eastern Airlines E-Commerce Co., Ltd. [member]
Disclosure of income taxes [Line Items]
Income tax rate	15.00%	15.00%

Income Tax - Summary of the Rec

Income Tax - Summary of the Reconciliation of Statutory Tax Rates to Effective Tax Rate (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
(Loss)/profit before income tax	¥ (17,513)	¥ (16,488)	¥ 4,299
Tax calculated at the tax rate of 25% (2020: 25%, 2019:25%)	(4,378)	(4,122)	1,075
Lower tax rates enacted by local authority	60	56	(139)
Share of results of associates and joint ventures	35	24	(71)
Income not subject to tax	(84)	(12)	(36)
Expenses not deductible for tax	159	169	128
Utilisation of previously unrecognised tax losses	0	(16)	(11)
Unrecognised tax losses for the year	69	21	17
Utilisation of previously unrecognised deductible temporary differences	0	(10)	(8)
Unrecognised deductible temporary differences	0	3	3
Adjustments in respect of current tax of previous periods	(1)	(4)	(34)
Additional deduction of research and development costs	(58)	(31)	(27)
Income tax deduction of purchase of special equipment for production safety	(31)	(5)	(78)
Income tax expense	¥ (4,229)	¥ (3,927)	¥ 819
Effective tax rate	24.15%	23.82%	19.05%

Income Tax - Summary of the R_2

Income Tax - Summary of the Reconciliation of Statutory Tax Rates to Effective Tax Rate (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Tax rate	25.00%	25.00%	25.00%

Dividends - Summary of Dividend

Dividends - Summary of Dividends (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of Dividends Paid [abstract]
Proposed final – Nil (2020: Nil, 2019: 0.050) per ordinary share	¥ 0	¥ 0	¥ 819

Dividends - Summary of Divide_2

Dividends - Summary of Dividends (Parenthetical) (Detail) - ¥ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of Dividends Paid [abstract]
Dividends proposed per ordinary share	¥ 0	¥ 0	¥ 0.050

Dividends - Additional Informat

Dividends - Additional Information (Detail) - ¥ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of Dividends Paid [abstract]
Dividends proposed per ordinary share	¥ 0	¥ 0	¥ 0.050

Loss_Earnings Per Share - Addit

Loss/Earnings Per Share - Additional Information (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings per share [abstract]
Profit attributable to equity holders of the Company	¥ (12,214)	¥ (11,836)	¥ 3,192
Weighted average number of shares	16,795,331,016	16,379,509,203	15,104,893,522
Potentially dilutive options	0	0	0
Potentially dilutive other instruments	0	0	0

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	¥ 101,043	¥ 99,437
Additions	4,606	5,169
Disposals	(3,242)	(1,330)
Transfer from construction in progress	0
Transfer from advanced payments on acquisition of aircraft		53
Transfer from investment properties (Note 17)	34	425
Transfer from right-of-use assets (Note 18(a))	809	6,402
Transfer to investment properties (Note 17)		(13)
Transfer (to) other non-current assets	(517)	(2)
Depreciation provided during the year	(9,490)	(9,067)
Impairment (note)	(1)	(31)	¥ (4)
Ending balance	93,242	101,043	99,437
Cost [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	174,342	162,072
Ending balance	167,083	174,342	162,072
Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	(73,299)	(62,635)
Ending balance	(73,841)	(73,299)	(62,635)
Net Carrying Amount [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	101,043	99,437
Ending balance	93,242	101,043	99,437
Aircraft, engines and flight equipment [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	80,959	79,479
Additions	2,343	3,517
Disposals	(3,094)	(781)
Transfer from construction in progress	0
Transfer from advanced payments on acquisition of aircraft		53
Transfer from investment properties (Note 17)	0
Transfer from right-of-use assets (Note 18(a))	809	6,402
Transfer (to) other non-current assets	0
Depreciation provided during the year	(7,958)	(7,680)
Impairment (note)	(1)	(31)
Ending balance	73,058	80,959	79,479
Aircraft, engines and flight equipment [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	144,827	133,845
Ending balance	136,247	144,827	133,845
Aircraft, engines and flight equipment [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	(63,868)	(54,366)
Ending balance	(63,189)	(63,868)	(54,366)
Aircraft, engines and flight equipment [member] | Net Carrying Amount [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	80,959	79,479
Ending balance	73,058	80,959	79,479
Buildings [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	12,714	11,654
Additions	170	69
Disposals	(85)	(22)
Transfer from construction in progress	745	1,102
Transfer from investment properties (Note 17)	34	425
Transfer from right-of-use assets (Note 18(a))	0
Transfer to investment properties (Note 17)		(13)
Transfer (to) other non-current assets	0
Depreciation provided during the year	(536)	(501)
Impairment (note)	0
Ending balance	13,042	12,714	11,654
Buildings [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	15,816	14,153
Ending balance	16,562	15,816	14,153
Buildings [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	(3,102)	(2,499)
Ending balance	(3,520)	(3,102)	(2,499)
Buildings [member] | Net Carrying Amount [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	12,714	11,654
Ending balance	13,042	12,714	11,654
Other property, plant and equipment [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	4,008	4,447
Additions	626	528
Disposals	(63)	(102)
Transfer from construction in progress	279	21
Transfer from investment properties (Note 17)	0
Transfer from right-of-use assets (Note 18(a))	0
Transfer (to) other non-current assets	0
Depreciation provided during the year	(996)	(886)
Impairment (note)	0
Ending balance	3,854	4,008	4,447
Other property, plant and equipment [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	10,337	10,217
Ending balance	10,986	10,337	10,217
Other property, plant and equipment [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	(6,329)	(5,770)
Ending balance	(7,132)	(6,329)	(5,770)
Other property, plant and equipment [member] | Net Carrying Amount [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	4,008	4,447
Ending balance	3,854	4,008	4,447
Construction in progress [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	3,362	3,857
Additions	1,467	1,055
Disposals	0	(425)
Transfer from construction in progress	(1,024)	(1,123)
Transfer from investment properties (Note 17)	0
Transfer from right-of-use assets (Note 18(a))	0
Transfer (to) other non-current assets	(517)	(2)
Depreciation provided during the year	0
Impairment (note)	0
Ending balance	3,288	3,362	3,857
Construction in progress [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	3,362	3,857
Ending balance	3,288	3,362	3,857
Construction in progress [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Ending balance	0
Construction in progress [member] | Net Carrying Amount [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
Beginning balance	3,362	3,857
Ending balance	¥ 3,288	¥ 3,362	¥ 3,857

Property, Plant and Equipment_2

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Parenthetical) (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss on property, plant and equipment	¥ 1	¥ 31	¥ 4
Aircraft, engines and flight equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss on property, plant and equipment	¥ 1	¥ 31

Property, Plant and Equipment_3

Property, Plant and Equipment - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [Line Items]
Property, plant and equipment where ownership certificates have not obtained	¥ 1,897	¥ 8,453

Property, Plant and Equipment_4

Property, Plant and Equipment - Summary of Cost and Carring Amount of Aircraft Pledged as Collateral Under Borrowing Arrangements and Aircraft Held Under Finance Leases (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [Line Items]
- pledged as collateral	¥ 23,129	¥ 17,515
Cost [member] | Aircraft [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
- pledged as collateral	31,958	26,149
Net Carrying Amount [member] | Aircraft [member]
Disclosure of detailed information about property, plant and equipment [Line Items]
- pledged as collateral	¥ 23,129	¥ 17,515

Investment Properties - Summary

Investment Properties - Summary of Investment Properties (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about investment property [Line Items]
Beginning balance	¥ 166
Charge for the year (Note 7)	(10)	¥ (12)	¥ (25)
Ending balance	118	166
Cost [member]
Disclosure of detailed information about investment property [Line Items]
Beginning balance	263	883
Transfer from property, plant and equipment (Note 16)	0	25
Transfer from right-of-use assets (Note 18(a))	0	11
Transfer to property, plant and equipment (Note 16)	(62)	(565)
Transfer to right-of-use assets (Note 18(a))	(9)	(91)
Ending balance	192	263	883
Accumulated depreciation and amortization [member]
Disclosure of detailed information about investment property [Line Items]
Beginning balance	97	230
Transfer from property, plant and equipment (Note 16)	0	12
Transfer from right-of-use assets (Note 18(a))	0	3
Transfer to property, plant and equipment (Note 16)	(28)	(140)
Transfer to right-of-use assets (Note 18(a))	(5)	(20)
Charge for the year (Note 7)	10	12
Ending balance	¥ 74	¥ 97	¥ 230

Investment Properties - Additio

Investment Properties - Additional Information (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about investment property [Line Items]
Fair value of the investment properties	¥ 118,000,000	¥ 166,000,000
Rental income	178,000,000	139,000,000	¥ 100,000,000
Pledged investment	0	0
Investment properties [member]
Disclosure of detailed information about investment property [Line Items]
Transfers of fair value measurements from level 1 to level 2	0	0
Transfers of fair value measurements from level 2 to level 1	0	0
Transfers of fair value measurements into level 3	0	0
Transfers of fair value measurements out of level 3	0	0
Not measured at fair value but for which fair values are disclosed [member]
Disclosure of detailed information about investment property [Line Items]
Fair value of the investment properties	¥ 324,000,000	¥ 445,000,000

Investment Properties - Summa_2

Investment Properties - Summary of Fair Value Measurement Hierarchy of Investment Properties (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about investment property [Line Items]
Buildings	¥ 118	¥ 166
Not measured at fair value but for which fair values are disclosed [member]
Disclosure of detailed information about investment property [Line Items]
Buildings	324	445
Not measured at fair value but for which fair values are disclosed [member] | Quoted prices in active markets (Level 1)
Disclosure of detailed information about investment property [Line Items]
Buildings	0
Not measured at fair value but for which fair values are disclosed [member] | Significant observable inputs (Level 2) [member]
Disclosure of detailed information about investment property [Line Items]
Buildings	80	119
Not measured at fair value but for which fair values are disclosed [member] | Significant unobservable inputs (Level 3) [member]
Disclosure of detailed information about investment property [Line Items]
Buildings	¥ 244	¥ 326

Leases - Summary of right of us

Leases - Summary of right of use assets and the movements (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Right Of Use Assets And The Movements [Line Items]
Cost at January 1, net of accumulated depreciation	¥ 118,210
Depreciation provided during the year	(12,389)	¥ (12,367)	¥ (12,298)
Cost at December 31, net of accumulated depreciation	126,875	118,210
Finance Lease [Member]
Disclosure Of Right Of Use Assets And The Movements [Line Items]
Cost at January 1, net of accumulated depreciation	118,210	128,704
Additions	21,963	8,389
Transfer from investment properties (Note 17)	4	71
Transfer to property, plant and equipment (Note 16)	(809)	(6,402)
Transfer to investment properties (Note 17)		(8)
Disposals	(104)	(177)
Depreciation provided during the year	(12,389)	(12,367)
Cost at December 31, net of accumulated depreciation	126,875	118,210	128,704
Aircraft and engines [member] | Finance Lease [Member]
Disclosure Of Right Of Use Assets And The Movements [Line Items]
Cost at January 1, net of accumulated depreciation	115,678	126,464
Additions	19,206	7,109
Transfer from investment properties (Note 17)	0
Transfer to property, plant and equipment (Note 16)	(809)	(6,402)
Disposals	(58)	(171)
Depreciation provided during the year	(11,206)	(11,322)
Cost at December 31, net of accumulated depreciation	122,811	115,678	126,464
Prepayments for land use rights [member] | Finance Lease [Member]
Disclosure Of Right Of Use Assets And The Movements [Line Items]
Cost at January 1, net of accumulated depreciation	1,368	1,343
Additions	1,112
Transfer from investment properties (Note 17)	4	71
Transfer to property, plant and equipment (Note 16)	0
Transfer to investment properties (Note 17)		(8)
Disposals	(13)
Depreciation provided during the year	(259)	(38)
Cost at December 31, net of accumulated depreciation	2,212	1,368	1,343
Buildings [member] | Finance Lease [Member]
Disclosure Of Right Of Use Assets And The Movements [Line Items]
Cost at January 1, net of accumulated depreciation	1,015	824
Additions	1,350	1,145
Transfer from investment properties (Note 17)	0
Transfer to property, plant and equipment (Note 16)	0
Disposals	(24)	(6)
Depreciation provided during the year	(834)	(948)
Cost at December 31, net of accumulated depreciation	1,507	1,015	824
Other assets [member] | Finance Lease [Member]
Disclosure Of Right Of Use Assets And The Movements [Line Items]
Cost at January 1, net of accumulated depreciation	149	73
Additions	295	135
Transfer from investment properties (Note 17)	0
Transfer to property, plant and equipment (Note 16)	0
Disposals	(9)
Depreciation provided during the year	(90)	(59)
Cost at December 31, net of accumulated depreciation	¥ 345	¥ 149	¥ 73

Leases - Summary of lease liabi

Leases - Summary of lease liabilities (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Lease Liabilities [Line Items]
COVID-19-related rent concessions from lessors	¥ 0	¥ (3)
Accretion of interest recognised during the year	3,113	3,655	¥ 3,894
Current portion	16,350	14,073
Non-current portion	82,126	82,178
Finance Lease [Member]
Disclosure Of Lease Liabilities [Line Items]
Carrying amount at January 1	96,251	110,275
New leases	18,202	7,191
Other addition	486
Effect of foreign exchange	(738)	(2,768)
COVID-19-related rent concessions from lessors	0	(3)
Accretion of interest recognised during the year	3,113	3,655
Payments	(18,838)	(22,099)
Carrying amount at December 31	98,476	96,251	¥ 110,275
Current portion	16,350	14,073
Non-current portion	¥ 82,126	¥ 82,178

Leases - Schedule of undiscount

Leases - Schedule of undiscounted lease payments receivables (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	¥ 642	¥ 871
Less than 1 year [member]
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	135	150
1 to 2 years [member]
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	74	141
In the third year [member]
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	69	135
In the fourth year [member]
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	57	134
In the fifth year [member]
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	53	114
Later than five years [member]
Disclosure of maturity analysis of operating lease payments [Line items]
Undiscounted operating lease payments to be received	¥ 254	¥ 197

Leases - Disclosure of lease ex

Leases - Disclosure of lease expenses (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total amount recognised in profit or loss
Interest on lease liabilities (Note 12)	¥ 3,113	¥ 3,655	¥ 3,894
Depreciation charge of right-of-use assets (Note 7)	12,389	12,367	¥ 12,298
COVID-19-related rent concessions from lessors	0	(3)
Low value and short-term lease rental	383	358
Total amount recognised in profit or loss	¥ 15,885	¥ 16,377

Leases - Additional Information

Leases - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)Aircraft	Dec. 31, 2020CNY (¥)Aircraft	Dec. 31, 2019CNY (¥)
Disclosure Of Leases [Line Items]
Number of aircrafts | Aircraft	491	440
Operating lease income | ¥	¥ 240	¥ 257	¥ 190
Bottom of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	5 years
Top of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	20 years
Engine [Member] | Bottom of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	5 years
Engine [Member] | Top of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	10 years
Buildings [member] | Bottom of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	2 years
Buildings [member] | Top of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	10 years
Land [member] | Bottom of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	40 years
Land [member] | Top of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	50 years
Motor vehicles [member] | Bottom of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	2 years
Motor vehicles [member] | Top of range [member]
Disclosure Of Leases [Line Items]
Lease Terms	5 years

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	¥ 11,718	¥ 11,698
Disposal		(5)
Additions	191	263
Amortization provided during the year	(210)	(239)	¥ (143)
Transfer from construction in process	14	1
Ending balance	11,713	11,718	11,698
Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	12,732
Ending balance	12,937	12,732
Accumulated depreciation and amortisation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	(1,014)
Ending balance	(1,224)	(1,014)
Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	11,270	11,270
Additions	0
Amortization provided during the year	0
Transfer from construction in process	0
Ending balance	11,270	11,270	11,270
Goodwill [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	11,270
Ending balance	11,270	11,270
Goodwill [member] | Accumulated depreciation and amortisation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Ending balance	0
Others [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	448	428
Disposal		(5)
Additions	191	263
Amortization provided during the year	(210)	(239)
Transfer from construction in process	14	1
Ending balance	443	448	¥ 428
Others [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	1,462
Ending balance	1,765	1,462
Others [member] | Accumulated depreciation and amortisation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [Line items]
Beginning balance	(1,014)
Ending balance	¥ (1,322)	¥ (1,014)

Intangible Assets - Summary o_2

Intangible Assets - Summary of Intangible Assets (Parenthetical) (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Discount rate applied to the cash flow projections	10.60%	9.50%
Growth rate used to extrapolate the cash flows	2.50%	2.60%
Intangible assets other than goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Impairment loss	¥ 0	¥ 0
Top of range [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Revenue growth rates used to extrapolate cash flow projections	47.00%
Gross margin rates used to extrapolate cash flow projections	16.00%
Bottom of range [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Revenue growth rates used to extrapolate cash flow projections	10.00%
Gross margin rates used to extrapolate cash flow projections	3.00%

Advanced Payments on Acquisit_3

Advanced Payments on Acquisition of Aircraft - Summary of Advanced Payments on Acquisition of Aircraft (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]
Advanced payments on acquisition of aircraft	¥ 12,165	¥ 17,240

Advanced Payments on Acquisit_4

Advanced Payments on Acquisition of Aircraft - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)
Disclosure of Detailed Information About Advanced Payments on Acquisition of Aircraft [Line Items]
Advanced payments on acquisition of aircraft accumulated interest capitalised	¥ 1,213
Proceeds from novation of purchase rights	¥ 8,092

Subsidiaries - Summary of Princ

Subsidiaries - Summary of Principal Subsidiaries (Detail) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)	Dec. 31, 2020CNY (¥)	Dec. 31, 2021HKD ($)
Disclosure of subsidiaries [line items]
Issued ordinary/registered share capital	¥ 18,874	¥ 16,379
China Eastern Airlines Jiangsu Co., Ltd. (CEA Jiangsu) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Apr. 7, 1993
Issued ordinary/registered share capital	¥ 2,000
Ownership interest held by the group	62.56%	62.56%
Ownership interest held by non-controlling interests	37.44%	37.44%
Principal activities	Provision of airline services
Kind of Legal Entity Description	limited liability company
China Eastern Airlines Wuhan Co., Ltd. (CEA Wuhan) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Aug. 16, 2002
Issued ordinary/registered share capital	¥ 1,750
Ownership interest held by the group	60.00%	60.00%
Ownership interest held by non-controlling interests	40.00%	40.00%
Principal activities	Provision of airline services
Kind of Legal Entity Description	limited liabilitycompany
Shanghai Eastern Flight Training Co., Ltd. (Shanghai Flight Training) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Dec. 18, 1995
Issued ordinary/registered share capital	¥ 694
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of flight training services
Kind of Legal Entity Description	limited liabilitycompany
Shanghai Airlines Co., Ltd. (Shanghai Airlines) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Mar. 16, 2010
Issued ordinary/registered share capital	¥ 500
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of airline services
Kind of Legal Entity Description	limited liabilitycompany
China Eastern Airlines Technology Co., Ltd. (Eastern Technology) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Nov. 19, 2014
Issued ordinary/registered share capital	¥ 4,300
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of airline maintenance services
Kind of Legal Entity Description	limited liabilitycompany
One two three Airlines Co., Ltd. (OTT Airlines) (Originally named Eastern Business Airlines Co., Ltd.) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Sep. 27, 2008
Issued ordinary/registered share capital	¥ 1,500
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of business aviation services
Kind of Legal Entity Description	limited liabilitycompany
China Eastern Airlines Yunnan Co., Ltd. (CEA Yunnan) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Jul. 27, 2010
Issued ordinary/registered share capital	¥ 3,662
Ownership interest held by the group	65.00%	90.36%
Ownership interest held by non-controlling interests	35.00%	9.64%
Principal activities	Provision of airline services
Kind of Legal Entity Description	limited liabilitycompany
Eastern Air Overseas (Hong Kong) Co., Ltd. (Eastern Air Overseas) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Hong Kong
Date of incorporation	Jun. 10, 2011
Issued ordinary/registered share capital | $			$ 280
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of import and export, investment, leasing and consultation services
Kind of Legal Entity Description	limited liabilitycompany
China United Airlines Co., Ltd. (China United Airlines) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Sep. 21, 1984
Issued ordinary/registered share capital	¥ 1,320
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of airline service
Kind of Legal Entity Description	limited liabilitycompany
China Eastern Airlines Application Development Center Co., Ltd. (Application Development Center) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Nov. 21, 2011
Issued ordinary/registered share capital	¥ 498
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	Provision of research and development of technology and products in the field of aviation
Kind of Legal Entity Description	limited liabilitycompany
China Eastern Airlines ECommerce Co., Ltd. (Eastern ECommerce) [Member]
Disclosure of subsidiaries [line items]
Place of businesss of subsidiary	Mainland China
Place of incorporation/registration and address	PRC
Date of incorporation	Dec. 1, 2014
Issued ordinary/registered share capital	¥ 100
Ownership interest held by the group	100.00%	100.00%
Ownership interest held by non-controlling interests	0.00%
Principal activities	E-commerce platform and ticket agent
Kind of Legal Entity Description	limited liabilitycompany

Subsidiaries - Summary of Finan

Subsidiaries - Summary of Financial Information of Subsidiaries that have Material Non-controlling Interests (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of subsidiaries [line items]
Revenue	¥ 66,887	¥ 58,470	¥ 120,796
Profit (loss) for the year	(13,284)	(12,561)	3,480
Total comprehensive income	(13,850)	(12,671)	3,433
Current assets	27,910	22,498
Non-current assets	260,880	262,152
Net cash flows from operating activities	5,692	1,211	28,972
Net cash flows generated from /(used in) investing activities	2,155	(6,283)	(4,899)
Net cash flows used in financing activities	(2,526)	11,426	(23,375)
Effect of foreign exchange rate changes, net	(22)	(53)	¥ 6
China Eastern Airlines Jiangsu Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Revenue	5,157	4,550
Total expenses	(6,792)	(5,713)
Profit (loss) for the year	(1,635)	(1,163)
Total comprehensive income	(1,642)	(1,164)
Current assets	384	477
Non-current assets	14,006	12,724
Current liabilities	6,146	(4,109)
Non-current liabilities	7,189	(6,395)
Net cash flows from operating activities	1,155	1,833
Net cash flows generated from /(used in) investing activities	591	(331)
Net cash flows used in financing activities	(1,754)	(1,556)
Effect of foreign exchange rate changes, net	0	0
Net decrease in cash and cash equivalents	(8)	(55)
China Eastern Airlines Yunnan Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Revenue	6,595	6,048
Total expenses	(7,616)	(6,809)
Profit (loss) for the year	(1,021)	(761)
Total comprehensive income	(1,021)	(761)
Current assets	467	290
Non-current assets	17,164	17,999
Current liabilities	5,622	(5,219)
Non-current liabilities	5,461	(6,528)
Net cash flows from operating activities	1,585	3,232
Net cash flows generated from /(used in) investing activities	(309)	(534)
Net cash flows used in financing activities	(1,275)	(2,698)
Effect of foreign exchange rate changes, net	0	0
Net decrease in cash and cash equivalents	1	0
China Eastern Airlines Wuhan Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Revenue	2,813	1,650
Total expenses	(3,131)	(2,167)
Profit (loss) for the year	(318)	(517)
Total comprehensive income	(341)	(532)
Current assets	158	97
Non-current assets	6,938	7,590
Current liabilities	2,091	(1,998)
Non-current liabilities	2,098	(2,441)
Net cash flows from operating activities	637	642
Net cash flows generated from /(used in) investing activities	(156)	(99)
Net cash flows used in financing activities	(481)	(543)
Effect of foreign exchange rate changes, net	0	0
Net decrease in cash and cash equivalents	¥ 0	¥ 0

Subsidiaries - Summary of Subsi

Subsidiaries - Summary of Subsidiaries that have Material Non-controlling Interests (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of subsidiaries [line items]
Loss for the year allocated to non-controlling interests	¥ (1,070)	¥ (725)	¥ 288
Accumulated balances of non-controlling interests at the reporting date	¥ 3,537	¥ 2,905
China Eastern Airlines Jiangsu Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest held by non-controlling interests	37.44%	37.44%
Loss for the year allocated to non-controlling interests	¥ (612)	¥ (435)
Accumulated balances of non-controlling interests at the reporting date	¥ 395	¥ 1,010
China Eastern Airlines Yunnan Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest held by non-controlling interests	35.00%	9.64%
Loss for the year allocated to non-controlling interests	¥ (348)	¥ (73)
Accumulated balances of non-controlling interests at the reporting date	¥ 2,000	¥ 631
China Eastern Airlines Wuhan Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest held by non-controlling interests	40.00%	40.00%
Loss for the year allocated to non-controlling interests	¥ (127)	¥ (207)
Accumulated balances of non-controlling interests at the reporting date	¥ 1,160	¥ 1,299

Subsidiaries - Summary of Trans

Subsidiaries - Summary of Transaction with Non-controlling Interests (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)
Disclosure of Detailed Information About Transaction with Non controlling Interests [Abstract]
Carrying amount of non-controlling interests disposed	¥ 1,717
Consideration paid by non-controlling interests	1,028
Deficit of consideration received recognised in the transactions with non-controlling interests reserve within equity	¥ 689

Subsidiaries - Additional Info

Subsidiaries - Additional Information (Detail) - China Eastern Airlines Yunnan Co., Ltd. [member] - CNY (¥) ¥ in Millions	Jan. 31, 2021	Feb. 28, 2021	Dec. 31, 2021	Dec. 31, 2020
Disclosure of subsidiaries [line items]
Percentage of equity attributable to the Company			65.00%
Percentage of equity interest held by non-controlling interests			35.00%	9.64%
Proportion of undistributed profit allocation to parent	72.74%
Deficit of consideration received recognised in the transactions with noncontrolling interests reserve within equity			¥ 689
Yunnan Provincial Peoples Government [Member]
Disclosure of subsidiaries [line items]
Capital injection by non-controlling		¥ 283
Non cash contribution by noncontolling interest fair value of land use right		¥ 744
Percentage of equity interest held by non-controlling interests			35.00%
Proportion of undistributed profit allocation to Noncontolling Interest	27.26%

Investment in Associate - Summa

Investment in Associate - Summary of Investments in Associates (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of associates [abstract]
Share of net assets	¥ 1,777	¥ 1,793

Investment in Associate - Sum_2

Investment in Associate - Summary of Movements in Investments in Associates (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of associates [abstract]
At January 1	¥ 1,793	¥ 1,977
Additions	140	0
Share of results of associates	(97)	(82)	¥ 265
Share of revaluation on equity investments designated at fair value through other comprehensive income held by an associate	(7)	2
Dividend declared during the year	(21)	(104)
Disposal of associates	(31)
At December 31	¥ 1,777	¥ 1,793	¥ 1,977

Investment in Associate - Sum_3

Investment in Associate - Summary of Principal Associates (Detail) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)	Dec. 31, 2020CNY (¥)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Disclosure of associates [Line Items]
Registered capital	¥ 18,874	¥ 16,379
Eastern Air Group Finance Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Dec. 6, 1995
Registered capital	¥ 2,000	¥ 2,000
Attributable equity interest	25.00%	25.00%
Principal activities	Provision of financial services to group companies of CEA Holding
China Eastern Air Catering Investment Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Nov. 17, 2003
Registered capital	¥ 350	¥ 350
Attributable equity interest	45.00%	45.00%
Principal activities	Provision of air catering services
Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Mar. 28, 2008
Registered capital | $			$ 40	$ 40
Attributable equity interest	51.00%	51.00%
Principal activities	Provision of aircraft, engine and other related component maintenance services
New Shanghai International Tower Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Nov. 17, 1992
Registered capital	¥ 167	¥ 167
Attributable equity interest	20.00%	20.00%
Principal activities	Property development provision and management services
Eastern Aviation Import & Export Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Jun. 9, 1993
Registered capital	¥ 80	¥ 80
Attributable equity interest	45.00%	45.00%
Principal activities	Provision of aviation equipment and purchase of spare parts
Eastern Aviation Advertising Service Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Mar. 4, 1986
Registered capital	¥ 200	¥ 200
Attributable equity interest	45.00%	45.00%
Principal activities	Provision of aviation advertising agency services
Shanghai Collins Aviation Maintenance Service Co., Ltd. [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Sep. 27, 2002
Registered capital | $			$ 7	$ 7
Attributable equity interest	35.00%	35.00%
Principal activities	Provision of airline electronic product maintenance services
Shanghai Airlines Tours International (Group) Co., Ltd [member]
Disclosure of associates [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Aug. 29, 1992
Registered capital	¥ 143	¥ 143
Attributable equity interest	35.00%	35.00%
Principal activities	Tour operations, travel and air ticketing agency and transportation

Investment in Associate - Addit

Investment in Associate - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. [member]
Disclosure of associates [Line Items]
Ownership interest	51.00%	51.00%

Investment in Associate - Sum_4

Investment in Associate - Summary of Aggregate Financial Information of Associates (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of associates [Line Items]
Share of the associates' loss for the year	¥ (97)	¥ (82)	¥ 265
Aggregate carrying amount of the Group's interests in the associates	1,777	1,793	¥ 1,977
Associates [member]
Disclosure of associates [Line Items]
Share of the associates' other comprehensive income	(7)	2
Share of the associates' total comprehensive income	¥ (104)	¥ (80)

Investments in Joint Ventures -

Investments in Joint Ventures - Summary of Investments in Joint Ventures (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of joint ventures [abstract]
Share of net assets	¥ 484	¥ 594

Investments in Joint Ventures_2

Investments in Joint Ventures - Summary of Movements in Investments in Joint Ventures (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of joint ventures [abstract]
Beginning balance	¥ 594	¥ 627
Share of results	(44)	(13)	¥ 17
Dividend declared during the year	(12)	(20)
Disposal of joint ventures	(54)
Ending balance	¥ 484	¥ 594	¥ 627

Investments in Joint Ventures_3

Investments in Joint Ventures - Summary of Principal Joint Ventures (Detail) ¥ in Millions, $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)	Dec. 31, 2020CNY (¥)	Dec. 31, 2021USD ($)	Dec. 31, 2021AUD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020AUD ($)
Disclosure of joint ventures [Line Items]
Registered capital | ¥	¥ 18,874	¥ 16,379
Shanghai Technologies Aerospace Co., Ltd. [member]
Disclosure of joint ventures [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Sep. 28, 2004
Registered capital			$ 73		$ 73
Attributable equity interest	51.00%	51.00%
Principal activities	Provision of repair and maintenance services
Shanghai Eastern Union Aviation Wheels & Brakes Maintenance Services Overhaul Engineering Co., Ltd. [member]
Disclosure of joint ventures [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Dec. 28, 1995
Registered capital			2		2
Attributable equity interest	0.00%	40.00%
Principal activities	Provision of spare parts repair and maintenance services
Eastern China Kaiya System Integration Co., Ltd. [member]
Disclosure of joint ventures [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	May 21, 1999
Registered capital | ¥	¥ 10	¥ 10
Attributable equity interest	41.00%	41.00%
Principal activities	Provision of computer system development and maintenance services
CAE Melbourne Flight Training Pty Ltd. [member]
Disclosure of joint ventures [Line Items]
Place of establishment and operation	Australia
Date of establishment	Mar. 9, 2007
Registered capital				$ 11		$ 11
Attributable equity interest	50.00%	50.00%
Principal activities	Provision of flight training services
Shanghai Hute Aviation Technology Co., Ltd. [member]
Disclosure of joint ventures [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Apr. 9, 2003
Registered capital | ¥	¥ 30	¥ 30
Attributable equity interest	0.00%	50.00%
Principal activities	Provision of equipment Maintenance services
Xi'an CEA SAFRAN Landing Systems Services Co., Ltd [member]
Disclosure of joint ventures [Line Items]
Place of establishment and operation	PRC/Mainland China
Date of establishment	Jul. 12, 2017
Registered capital			$ 40		$ 40
Attributable equity interest	50.00%	50.00%
Principal activities	Provision of aircraft, engine and other related component maintenance services

Investments in Joint Ventures_4

Investments in Joint Ventures - Summary of Aggregate Financial Information of Joint Ventures (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of joint ventures [Line Items]
Aggregate carrying amount of the Group's interests in the joint ventures	¥ 484	¥ 594	¥ 627
Joint ventures [member]
Disclosure of joint ventures [Line Items]
Share of the joint ventures' (loss)/profit and total comprehensive income for the year	¥ (44)	¥ (13)

Equity Investments Designated_3

Equity Investments Designated at Fair Value Through Other Comprehensive Income - Summary of Equity Investments Designated at Fair Value Through Other Comprehensive Income (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Equity investments designated at fair value through other comprehensive income	¥ 457	¥ 995
Listed equity investment, at fair value [member] | Travelsky technology limited [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Equity investments designated at fair value through other comprehensive income	237	457
Unlisted equity investments, at cost [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Equity investments designated at fair value through other comprehensive income	220	538
Unlisted equity investments, at cost [member] | Sichuan Airlines Corporation Limited [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Equity investments designated at fair value through other comprehensive income	34	194
Unlisted equity investments, at cost [member] | Aviation Data Communication Corporation Limited [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Equity investments designated at fair value through other comprehensive income	137	182
Unlisted equity investments, at cost [member] | Others [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Equity investments designated at fair value through other comprehensive income	¥ 49	¥ 162

Equity Investments Designated_4

Equity Investments Designated at Fair Value Through Other Comprehensive Income - Summary of Amounts Recognised In Profit Or Loss And Other Comprehensive Income (Detail) - Listed Equity Investments [member] - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Losses recognised in other comprehensive income, net of tax	¥ 247	¥ 209
Dividends from equity investments held at FVOCI recognised in profit or loss in other income	¥ 3	¥ 12

Derivative Financial Instrume_3

Derivative Financial Instruments - Summary of Derivative Financial Instruments (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, assets	¥ 0	¥ 399
Derivative financial instruments, current assets	0	362
Derivative financial instruments, noncurrent assets	0	37
Derivative financial instruments, liabilities	46	141
Derivative financial instruments, current liabilities	1	3
Derivative financial instruments, noncurrent liabilities	45	138
Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, assets	0
Derivative financial instruments, current assets	0
Derivative financial instruments, liabilities	46	140
Derivative financial instruments, current liabilities	1	2
Fuel Forward Contracts [Member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, assets	0	399
Derivative financial instruments, current assets	0	362
Derivative financial instruments, liabilities	0	1
Derivative financial instruments, current liabilities	¥ 0	¥ 1

Derivative Financial Instrume_4

Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Interest rate swaps [member] | Bottom of range [member]
Disclosure of detailed information about financial instruments [Line Items]
Contracts Expiry Date	2022
Interest rate swaps [member] | Top of range [member]
Disclosure of detailed information about financial instruments [Line Items]
Contracts Expiry Date	2025
Fuel Forward Contracts [Member]
Disclosure of detailed information about financial instruments [Line Items]
Notional principal outstanding, Fuel hedging contracts	$ 0	$ 252
Interest Rate Risk [Member] | Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Notional principal outstanding, Fuel hedging contracts	$ 495	$ 690

Other Non-current Assets - Summ

Other Non-current Assets - Summary of Other Non-current Assets (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Miscellaneous non-current assets [abstract]
Deposits relating to aircraft held under leases	¥ 140	¥ 143
Deferred pilot recruitment costs	2,088	2,100
Rebate receivables on aircraft acquisitions	1,134	1,264
Prepayment for acquisition of property, plant and equipment	286	1,055
Others	821	783
Other non-current assets	¥ 4,469	¥ 5,345

Deferred Tax Assets and Liabi_3

Deferred Tax Assets and Liabilities - Summary of Net Deferred Tax Assets/(Liabilities) (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets and liabilities [abstract]
Deferred tax assets	¥ 9,580	¥ 5,011
Deferred tax liabilities	0	(13)
Net deferred income tax assets	¥ 9,580	¥ 4,998	¥ 831

Deferred Tax Assets and Liabi_4

Deferred Tax Assets and Liabilities - Summary of Movements in Net Deferred Tax Assets (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	¥ 4,998	¥ 831
Credited to profit or loss (note 13)	4,372	4,149	¥ 123
Charged to other comprehensive income	210	18
At the end of the year	¥ 9,580	¥ 4,998	¥ 831

Deferred Tax Assets and Liabi_5

Deferred Tax Assets and Liabilities - Summary of Deferred Tax Assets and Liabilities Prior to Offsetting of Balances within Same Tax Jurisdiction (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	¥ 9,580	¥ 5,011
Net deferred tax (liabilities)/assets	9,580	4,998	¥ 831
Deferred tax liabilities	0	(13)
Provision for lease return costs for aircraft and engines [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	1,190	1,109	1,075
Impairment provision for flight equipment spare parts [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	65	61	53
Impairment provision for receivables [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	84	80	76
Impairment provision for property, plant, and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	61	115	101
Derivative financial instruments [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	12	36	6
Assets at fair value through profit or loss [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	10	7
Net deferred tax (liabilities)/assets	10	7
Other payables and accruals [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	65	70	71
Government grants related to assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	22	29	35
Loss available for offsetting against future taxable profits [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	8,323	3,699
Net deferred tax (liabilities)/assets	8,323	3,699	66
Safety equipment tax credit [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	41	10
Net deferred tax (liabilities)/assets	41	10
Aged payables [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets		1	1
Lease liabilities/right-of-use assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	0	94
Net deferred tax (liabilities)/assets		94
Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Net deferred tax (liabilities)/assets	(79)	(213)	¥ (283)
Cost [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	9,873	5,311
Net deferred tax (liabilities)/assets	9,580	4,998
Deferred tax liabilities	(293)	(313)
Cost [member] | Provision for lease return costs for aircraft and engines [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	1,190	1,109
Cost [member] | Impairment provision for flight equipment spare parts [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	65	61
Cost [member] | Impairment provision for receivables [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	84	80
Cost [member] | Impairment provision for property, plant, and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	61	115
Cost [member] | Derivative financial instruments [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	12	36
Deferred tax liabilities	0	(100)
Cost [member] | Other payables and accruals [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	65	70
Cost [member] | Government grants related to assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	22	29
Cost [member] | Aged payables [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax assets	0	1
Cost [member] | Lease liabilities/right-of-use assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax liabilities	(214)
Cost [member] | Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Deferred tax liabilities	¥ (79)	¥ (213)

Deferred Tax Assets and Liabi_6

Deferred Tax Assets and Liabilities - Summary of Movements in Net Deferred Tax (Liabilities)/Assets of the Group (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	¥ 4,998	¥ 831
(Charged)/ credited to profit or loss	4,372	4,149	¥ 123
Charged to other comprehensive income	210	18
At the end of the year	9,580	4,998	831
Provision for lease return costs for aircraft and engines [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	1,109	1,075
(Charged)/ credited to profit or loss	81	34
At the end of the year	1,190	1,109	1,075
Impairment provision for flight equipment spare parts [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	61	53
(Charged)/ credited to profit or loss	4	8
At the end of the year	65	61	53
Impairment provision for receivables [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	80	76
(Charged)/ credited to profit or loss	4	4
At the end of the year	84	80	76
Impairment provision for property, plant, and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	115	101
(Charged)/ credited to profit or loss	(54)	14
At the end of the year	61	115	101
Derivative financial instruments [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	36	6
Charged to other comprehensive income	(24)	30
At the end of the year	12	36	6
Other payables and accruals [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	70	71
(Charged)/ credited to profit or loss	(5)	(1)
At the end of the year	65	70	71
Loss available for offsetting against future taxable profits [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	3,699	66
(Charged)/ credited to profit or loss	4,624	3,633
At the end of the year	8,323	3,699	66
Safety equipment tax credit [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	10
(Charged)/ credited to profit or loss	31	10
At the end of the year	41	10
Aged payables [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	1	1
(Charged)/ credited to profit or loss	(1)
At the end of the year		1	1
Lease liabilities/right-of-use assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	94
(Charged)/ credited to profit or loss	(94)	94
At the end of the year		94
Net deferred tax assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	5,311	1,484
(Charged)/ credited to profit or loss	4,586	3,797
Charged to other comprehensive income	(24)	30
At the end of the year	9,873	5,311	1,484
Derivative financial instruments [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	(100)	(18)
Charged to other comprehensive income	100	(82)
At the end of the year		(100)	(18)
Net deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	(313)	(653)
(Charged)/ credited to profit or loss	(214)	352
Charged to other comprehensive income	234	(12)
At the end of the year	(293)	(313)	(653)
Assets at fair value through profit or loss [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	7
(Charged)/ credited to profit or loss	3	7
At the end of the year	10	7
Government grants related to assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	29	35
(Charged)/ credited to profit or loss	(7)	(6)
At the end of the year	22	29	35
Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year	(213)	(283)
Charged to other comprehensive income	134	70
At the end of the year	(79)	(213)	(283)
Lease liabilities/right-of-use assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
At the beginning of the year		(352)
(Charged)/ credited to profit or loss	(214)	¥ 352
At the end of the year	¥ (214)		¥ (352)

Deferred Tax Assets and Liabi_7

Deferred Tax Assets and Liabilities - Summary of Movements in Net Deferred Tax (Liabilities)/Assets of the Group (Parenthetical) (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets and liabilities [abstract]
Deferred Tax Assets Not Recognized	¥ 3,042	¥ 7,087

Deferred Tax Assets and Liabi_8

Deferred Tax Assets and Liabilities - Summary of Balances for Which Deferred Tax Assets Have Not Been Recognised (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred taxation [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Tax losses carried forward	¥ 95	¥ 34
Other deductible temporary differences	8	8
Total unrecognised deferred tax assets	103	42
Temporary differences [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line items]
Tax losses carried forward	380	135
Other deductible temporary differences	33	35
Total unrecognised deferred tax assets	¥ 413	¥ 170

Deferred Tax Assets and Liabi_9

Deferred Tax Assets and Liabilities - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	¥ 9,580	¥ 5,011
Tax losses monetary duration debit	34,065	15,175
Unused tax losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	8,323	3,699
Temporary differences [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	¥ 1,550	¥ 1,612

Flight Equipment Spare Parts -

Flight Equipment Spare Parts - Summary of Flight Equipment Spare Parts (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of inventories [Line Items]
Flight equipment spare parts	¥ 1,799	¥ 2,054
Flight equipment spare parts [member]
Disclosure of inventories [Line Items]
Flight equipment spare parts	1,799	2,054
Flight equipment spare parts [member] | Cost [member]
Disclosure of inventories [Line Items]
Flight equipment spare parts	2,059	2,299
Flight equipment spare parts [member] | Impairment [member]
Disclosure of inventories [Line Items]
Flight equipment spare parts	¥ (260)	¥ (245)

Flight Equipment Spare Parts _2

Flight Equipment Spare Parts - Summary of Movements in Provision for Impairment of Flight Equipment Spare Parts (Detail) - Provision written off in relation to disposal of spare parts [member] - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of inventories [Line Items]
Beginning balance	¥ 245	¥ 325
Accrual	21	153
Amount written off in relation to disposal of spare parts	(6)	(233)
Ending balance	¥ 260	¥ 245

Trade Receivables - Summary of

Trade Receivables - Summary of Trade Receivables (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Trade and other current receivables [abstract]
Trade receivables	¥ 1,051	¥ 1,210
Less: impairment	(77)	(86)
Trade receivables	¥ 974	¥ 1,124

Trade Receivables - Summary o_2

Trade Receivables - Summary of Ageing Analysis of Trade Receivables (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial assets [Line Items]
Trade receivables	¥ 974	¥ 1,124
Within 90 days [member]
Disclosure of financial assets [Line Items]
Trade receivables	919	1,054
91 to 180 days [member]
Disclosure of financial assets [Line Items]
Trade receivables	39	46
181 to 365 days [member]
Disclosure of financial assets [Line Items]
Trade receivables	9	8
Over 365 days [member]
Disclosure of financial assets [Line Items]
Trade receivables	¥ 7	¥ 16

Trade Receivables - Summary o_3

Trade Receivables - Summary of Provision for Impairment of Trade Receivables (Detail) - Trade receivables [member] - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial assets [Line Items]
At beginning of year	¥ 86	¥ 76
Impairment losses, net (note 10)	3	15
Amount written off as uncollectible	(12)	(5)
At end of year	¥ 77	¥ 86

Trade Receivables - Schedule of

Trade Receivables - Schedule of Credit Risk Exposure on Group's Trade Receivables (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial assets that are either past due or impaired [Line Items]
Gross carrying amount (RMB million)	¥ 1,051	¥ 1,210
IFRS 9 [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Expected credit loss rate (%)	7.37%	7.08%
Expected credit losses (RMB million)	¥ 77	¥ 86
IFRS 9 [member] | Within 90 days [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Expected credit loss rate (%)	3.67%	4.79%
Expected credit losses (RMB million)	¥ 1	¥ 1
IFRS 9 [member] | Current [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Expected credit loss rate (%)	0.70%	0.85%
Expected credit losses (RMB million)	¥ 6	¥ 9
IFRS 9 [member] | 90 to 365 Days [Member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Expected credit loss rate (%)	5.36%	6.87%
Expected credit losses (RMB million)	¥ 1	¥ 1
IFRS 9 [member] | Over 365 days [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Expected credit loss rate (%)	90.79%	76.93%
Expected credit losses (RMB million)	¥ 69	¥ 75
IFRS 9 [member] | Cost [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Gross carrying amount (RMB million)	1,051	1,210
IFRS 9 [member] | Cost [member] | Within 90 days [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Gross carrying amount (RMB million)	40	42
IFRS 9 [member] | Cost [member] | Current [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Gross carrying amount (RMB million)	925	1,063
IFRS 9 [member] | Cost [member] | 90 to 365 Days [Member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Gross carrying amount (RMB million)	10	9
IFRS 9 [member] | Cost [member] | Over 365 days [member]
Disclosure of financial assets that are either past due or impaired [Line Items]
Gross carrying amount (RMB million)	¥ 76	¥ 96

Financial Asset at Fair Value_2

Financial Asset at Fair Value Through Profit or Loss - Summary of Financial Assets at Fair Value Through Profit or Loss (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of financial assets [Line Items]
Fair value losses on equity investments at FVPL recognised in other losses	¥ (11)	¥ (26)	¥ 25
Shanghai Pudong Development Bank Co., Ltd. [member]
Disclosure of financial assets [Line Items]
Available-for-sale investments	¥ 84	¥ 95

Prepayments and Other Receiva_3

Prepayments and Other Receivables - Summary of Prepayments and Other Receivables (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial assets [Line Items]
Value added tax recoverable	¥ 169	¥ 185
Rebate receivables on aircraft acquisitions	1,134	1,264
Prepayments and other receivables	12,089	11,198
Cost [member]
Disclosure of financial assets [Line Items]
Value added tax recoverable	9,025	7,997
Value added tax refundable	323	174
Subsidy receivable	1,493	1,421
Prepaid corporate income tax	85	347
Advance to suppliers	158	121
Rebate receivables on aircraft acquisitions	299	90
Amounts due from related parties (note 49(c)(i))	382	769
Deposits relating to aircraft held under leases	0	7
Other deposits	237	161
Others	381	380
Prepayments and other receivables	12,383	11,467
Impairment [member]
Disclosure of financial assets [Line Items]
Prepayments and other receivables	¥ (294)	¥ (269)

Prepayments and Other Receiva_4

Prepayments and Other Receivables - Schedule of Movements of Loss Allowances Measured at 12-month and Lifetime Expected Credit Losses for Financial Assets Included in Other Receivables (Detail) - Accumulated depreciation, amortisation and impairment [member] - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]
Beginning balance	¥ 269	¥ 263
Transferred — to stage 3	0
Transferred - to stage 2	0
Accrual	25	17
Write-off		(11)
Ending balance	294	269
12-month expected credit losses [member] | Stage One [member]
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]
Beginning balance	36	33
Transferred — to stage 3	0
Transferred - to stage 2	(8)	(2)
Accrual	1	5
Ending balance	29	36
Lifetime expected credit losses [member] | Stage three [member]
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]
Beginning balance	111	122
Transferred — to stage 3	71
Transferred - to stage 2	0
Accrual	15
Write-off		(11)
Ending balance	197	111
Lifetime expected credit losses [member] | Expected credit losses collectively assessed [member] | Stage Two [member]
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]
Beginning balance	122	108
Transferred — to stage 3	(71)
Transferred - to stage 2	8	2
Accrual	9	12
Ending balance	¥ 68	¥ 122

Cash and Cash Equivalents and_3

Cash and Cash Equivalents and Restricted Cash - Summary of Cash and Cash Equivalents and Restricted Cash (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents [abstract]
Cash at bank and on hand	¥ 12,962	¥ 7,663
Less: restricted cash	(12)	(12)
Cash and cash equivalents	12,950	7,651
Restricted bank deposits	¥ 12	¥ 12

Cash and cash equivalents and_4

Cash and cash equivalents and restricted cash - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [Line Items]
Cash and bank balances	¥ 12,950	¥ 7,651
RMB [member]
Disclosure of detailed information about financial instruments [Line Items]
Cash and bank balances	¥ 12,788	¥ 6,658

Assets classified as held for_2

Assets classified as held for sale - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
China Aviation Supplies Co Ltd [Member]
Disclosure of assets held for sale [line items]
Assets classified as held for sale	¥ 2	¥ 2

Trade payables and bills paya_3

Trade payables and bills payable - Summary of Aged Analysis of Trade and Bills Payables (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial liabilities [Line Items]
Trade and bills payable	¥ 2,454	¥ 3,220
Within 90 days [member]
Disclosure of financial liabilities [Line Items]
Trade and bills payable	2,338	2,868
91 to 180 days [member]
Disclosure of financial liabilities [Line Items]
Trade and bills payable	6	35
181 to 365 days [member]
Disclosure of financial liabilities [Line Items]
Trade and bills payable	16	109
1 to 2 years [member]
Disclosure of financial liabilities [Line Items]
Trade and bills payable	15	111
Over 2 years [member]
Disclosure of financial liabilities [Line Items]
Trade and bills payable	¥ 79	¥ 97

Trade payables and bills paya_4

Trade payables and bills payable - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Trade and other payables [abstract]
Bills payable	¥ 748	¥ 610

Contract liabilities - Summary

Contract liabilities - Summary of Contract liabilities (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Contract liabilities [abstract]
Sales in advance of carriage	¥ 2,128	¥ 2,155
Frequent flyer programme	1,492	1,781
Advances from customers	566	1,055
Contract liabilities	4,186	4,991
Current portion	3,287	3,671
Non-current portion	¥ 899	¥ 1,320

Other Payables and Accruals - S

Other Payables and Accruals - Summary of Other Payables and Accruals (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Trade and other payables [abstract]
Salaries, wages and benefits	¥ 2,757	¥ 3,806
Take-off and landing charges	2,150	2,330
Fuel cost	1,141	451
Expenses related to aircraft overhaul conducted	2,541	2,853
Duties and levies payable	1,739	1,353
Food and beverages	403	125
Payable for system services	1,060	1,643
Lease rentals	527	484
Other accrued operating expenses	426	567
Payable for purchase of property, plant and equipment	1,722	2,310
Pending output value added tax	216	250
Deposits received from ticket sales agents	375	420
Other deposit	540	529
Current portion of other long-term liabilities (Note 40)	293	235
Amounts due to related parties (Note 45(c)(ii))	213	398
Current portion of post-retirement benefit obligations (Note 39(b))	160	165
Others	2,482	3,700
Other payables and accruals	¥ 18,745	¥ 21,619

Borrowings - Summary of Borrowi

Borrowings - Summary of Borrowings (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]
Long-term bank borrowings - secured	¥ 16,401	¥ 8,638
Long-term bank borrowings - unsecured	11,750	4,526
Guaranteed bonds	8,648	9,585
Unsecured bonds	13,993	7,996
Total non-current borrowings	50,792	30,745
Current portion of non-current borrowings - secured	1,910	1,498
Current portion of non-current borrowings - unsecured	211	28
Current portion of guaranteed bonds (note (b))	1,828	3,158
Current portion of unsecured bonds (note (b))	3,436	4,000
Short-term bank borrowings - unsecured	37,614	21,966
Short-term debentures	0	26,500
Current portion of long-term bank borrowings	44,999	57,150
Total borrowings	95,791	87,895
Total borrowings	95,791	87,895
Less than 1 year [member]
Disclosure of detailed information about borrowings [line items]
Total borrowings	44,999	57,149
Total borrowings	44,999	57,149
1 to 2 years [member]
Disclosure of detailed information about borrowings [line items]
Total borrowings	14,080	5,936
Total borrowings	14,080	5,936
Between third and fifth years, inclusive [member]
Disclosure of detailed information about borrowings [line items]
Total borrowings	15,900	17,680
Total borrowings	15,900	17,680
Over 5 years [member]
Disclosure of detailed information about borrowings [line items]
Total borrowings	20,812	7,130
Total borrowings	¥ 20,812	¥ 7,130

Borrowings - Summary of Borro_2

Borrowings - Summary of Borrowings (Parenthetical) (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about borrowings [abstract]
Carrying amount of related aircraft and buildings pledged as security	¥ 23,129	¥ 17,515

Borrowings - Summary of Long-te

Borrowings - Summary of Long-term Borrowings and Bonds (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	¥ 58,177	¥ 39,429
Long-term bank borrowings [member] | RMB [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	28,302	11,651
Long-term bank borrowings [member] | USD [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	13	375
Long-term bank borrowings [member] | EUR [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	1,957	2,664
Guaranteed bonds [member] | RMB [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	6,499	7,798
Guaranteed bonds [member] | SGD [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	2,371
Guaranteed bonds [member] | JPY [Member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	0	3,158
Guaranteed bonds [member] | KRW [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	1,606	1,787
Unsecured bonds [member] | RMB [member]
Disclosure of detailed information about borrowings [line items]
Long-term borrowings	¥ 17,429	¥ 11,996

Borrowings - Summary of Long-_2

Borrowings - Summary of Long-term Borrowings and Bonds (Parenthetical) (Detail)	Mar. 18, 2013	Dec. 31, 2021	Dec. 31, 2020
Long-term bank borrowings [member] | RMB [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2045
Long-term bank borrowings [member] | RMB [member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2.40%	2.40%
Long-term bank borrowings [member] | RMB [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		4.15%	4.21%
Long-term bank borrowings [member] | USD [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2022
Long-term bank borrowings [member] | USD [member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate basis		6-month LIBOR	6-month LIBOR
Borrowings interest rate basis adjustment		0.70%	0.70%
Long-term bank borrowings [member] | USD [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate basis		6-month LIBOR	6-month LIBOR
Borrowings interest rate basis adjustment		0.85%	0.85%
Long-term bank borrowings [member] | EUR [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate basis		3-month EURLIBOR	3-month EURLIBOR
Borrowings interest rate basis adjustment		0.50%	0.50%
Borrowings interest rate		2026
Guaranteed bonds [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	5.05%	5.05%
Borrowings interest rate	ten-year
Guaranteed bonds [member] | RMB [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2026
Guaranteed bonds [member] | RMB [member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.03%	3.03%
Guaranteed bonds [member] | RMB [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		5.05%	5.05%
Guaranteed bonds [member] | SGD [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2.00%
Borrowings interest rate		2026
Guaranteed bonds [member] | JPY [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2021
Guaranteed bonds [member] | JPY [Member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.33%	0.33%
Guaranteed bonds [member] | JPY [Member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.64%	0.64%
Guaranteed bonds [member] | KRW [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2.40%	2.40%
Borrowings interest rate		2022
Unsecured bonds [member] | RMB [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2031
Unsecured bonds [member] | RMB [member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		2.39%	2.39%
Unsecured bonds [member] | RMB [member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.95%	3.70%

Borrowings - Summary of Detaile

Borrowings - Summary of Detailed Borrowings from Banks (Detail) ₩ in Billions, ¥ in Billions, $ in Billions	12 Months Ended
	Dec. 31, 2021CNY (¥)	Dec. 31, 2021KRW (₩)	Dec. 31, 2021SGD ($)	Jul. 15, 2021SGD ($)	Mar. 11, 2021CNY (¥)	Mar. 05, 2019CNY (¥)	Oct. 24, 2016CNY (¥)	Mar. 18, 2013CNY (¥)
Guaranteed bonds [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Mar. 18, 2013
Notional amount	¥ 4.8							¥ 4.8
Borrowings, interest rate	5.05%	5.05%	5.05%					5.05%
Corporate bonds one [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Oct. 24, 2016
Notional amount	¥ 1.5				¥ 6		¥ 1.5
Borrowings, interest rate	3.03%	3.03%	3.03%		3.68%		3.03%
Corporate bonds two [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Oct. 24, 2016
Notional amount	¥ 1.5						¥ 1.5
Borrowings, interest rate	3.30%	3.30%	3.30%				3.30%
Medium-term bonds [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Mar. 5, 2019
Notional amount	¥ 3					¥ 3
Borrowings, interest rate	3.70%	3.70%	3.70%			3.70%
Corporate bonds three [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Aug. 19, 2019
Notional amount	¥ 3
Borrowings, interest rate	3.60%	3.60%	3.60%
Corporate bonds four [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Dec. 6, 2019
Notional amount | ₩		₩ 300
Borrowings, interest rate	2.40%	2.40%	2.40%
Corporate bonds five [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Apr. 24, 2020
Notional amount	¥ 2
Borrowings, interest rate	2.39%	2.39%	2.39%
Corporate Bonds Six [Member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Mar. 11, 2021
Notional amount	¥ 3
Borrowings, interest rate	3.95%	3.95%	3.95%
Corporate Bonds Seven [Member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Mar. 11, 2021
Notional amount	¥ 6
Borrowings, interest rate	3.68%	3.68%	3.68%
First Series of SGD Denominated Credit Enhanced Bonds [member]
Disclosure Of Detailed Information Borrowings From Banks [Line Items]
Bonds Issue Date	Jul. 15, 2021
Notional amount | $			$ 0.5	$ 0.5
Borrowings, interest rate	2.00%	2.00%	2.00%	2.00%

Borrowings - Summary of Detai_2

Borrowings - Summary of Detailed Borrowings from Banks (Parenthetical) (Detail) ₩ in Billions, ¥ in Billions, $ in Billions	Jul. 15, 2021SGD ($)	Mar. 11, 2021CNY (¥)	Apr. 24, 2020CNY (¥)	Dec. 06, 2019KRW (₩)	Aug. 19, 2019CNY (¥)	Mar. 05, 2019CNY (¥)	Oct. 24, 2016CNY (¥)	Mar. 18, 2013CNY (¥)	Dec. 31, 2021CNY (¥)	Dec. 31, 2021SGD ($)
Guaranteed bonds [member]
Disclosure of detailed information about borrowings [line items]
Term of borrowing								ten-year
Principal amount of borrowing								¥ 4.8	¥ 4.8
Interest rate of borrowing								5.05%	5.05%	5.05%
Medium-term bonds [member]
Disclosure of detailed information about borrowings [line items]
Term of borrowing						three-year
Principal amount of borrowing						¥ 3			¥ 3
Interest rate of borrowing						3.70%			3.70%	3.70%
Corporate bonds [member]
Disclosure of detailed information about borrowings [line items]
Term of borrowing		ten-year	three-year	three-year	five-year		ten-year
Principal amount of borrowing		¥ 3	¥ 2	₩ 300	¥ 3		¥ 3
Interest rate of borrowing		3.95%	2.39%	2.40%	3.60%
Corporate bonds one [member]
Disclosure of detailed information about borrowings [line items]
Term of borrowing		six-year
Principal amount of borrowing		¥ 6					¥ 1.5		¥ 1.5
Interest rate of borrowing		3.68%					3.03%		3.03%	3.03%
Corporate bonds two [member]
Disclosure of detailed information about borrowings [line items]
Principal amount of borrowing							¥ 1.5		¥ 1.5
Interest rate of borrowing							3.30%		3.30%	3.30%
First Series of SGD Denominated Credit Enhanced Bonds [member]
Disclosure of detailed information about borrowings [line items]
Term of borrowing	five-year
Principal amount of borrowing | $	$ 0.5									$ 0.5
Interest rate of borrowing	2.00%								2.00%	2.00%

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - Short-term borrowings [member]	Dec. 31, 2021	Dec. 31, 2020
Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	2.00%	1.21%
Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	3.00%	3.30%

Provision For Lease Return Co_3

Provision For Lease Return Costs For Aircraft And Engines - Summary of Provision for Return Condition Checks for Aircraft Under Operating Leases (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of provision for return condition checks for aircraft under operating leases [Line Items]
Beginning balance	¥ 6,990	¥ 7,178
Accrual	373	283
Utilization	(93)	(471)
Ending balance	7,270	6,990
Less: current portion	0	(24)
Non-current portion	¥ 7,270	¥ 6,966

Post-Retirement Benefit Oblig_3

Post-Retirement Benefit Obligations - Summary of Post-retirement Benefit Obligations Recognized in Consolidated Statement of Financial Position (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Post-retirement benefit obligations	¥ 2,527	¥ 2,538
Less: current portion	(160)	(165)
Non-current portion	¥ 2,367	¥ 2,373

Post-Retirement Benefit Oblig_4

Post-Retirement Benefit Obligations - Summary of Principal Actuarial Assumptions Utilized (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Discount rates for post-retirement benefits	2.85%	3.40%
Mortality rate	China Insurance Life Mortality Table (2010-2013). CL5 for Male and CL6 for Female	China Insurance Life Mortality Table (2010-2013). CL5 for Male and CL6 for Female
Annual increase rate of post-retirement medical expenses	6.50%	6.50%
Inflation rate of pension benefits	2.50%	2.50%

Post-Retirement Benefit Oblig_5

Post-Retirement Benefit Obligations - Summary of Quantitative Sensitivity Analysis for Significant Assumptions (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Discount rate for post-retirement benefits [member]
Disclosure of sensitivity analysis for actuarial assumptions [Line items]
Increase in rate %	0.25%	0.25%
Increase/ (decrease) in post-retirement benefit obligations	¥ (66)	¥ (78)
Decrease in rate %	0.25%	0.25%
Increase/ (decrease) in post-retirement benefit obligations	¥ 69	¥ 81
Annual increase rate of pension benefits [member]
Disclosure of sensitivity analysis for actuarial assumptions [Line items]
Increase in rate %	1.00%	1.00%
Increase/ (decrease) in post-retirement benefit obligations	¥ 246	¥ 244
Decrease in rate %	1.00%	1.00%
Increase/ (decrease) in post-retirement benefit obligations	¥ (211)	¥ (208)
Annual increase rate of medical expenses [member]
Disclosure of sensitivity analysis for actuarial assumptions [Line items]
Increase in rate %	1.00%	1.00%
Increase/ (decrease) in post-retirement benefit obligations	¥ 37	¥ 43
Decrease in rate %	1.00%	1.00%
Increase/ (decrease) in post-retirement benefit obligations	¥ (31)	¥ (36)

Post-Retirement Benefit Oblig_6

Post-Retirement Benefit Obligations - Summary of Expected Contributions of Post-retirement Benefit Obligations (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [Line Items]
Expected payments	¥ 3,551	¥ 4,079
Less than 1 year [member]
Disclosure of defined benefit plans [Line Items]
Expected payments	161	165
2 to 5 years [member]
Disclosure of defined benefit plans [Line Items]
Expected payments	635	660
Between 6 and 10 years [member]
Disclosure of defined benefit plans [Line Items]
Expected payments	757	805
Over 10 years [member]
Disclosure of defined benefit plans [Line Items]
Expected payments	¥ 1,998	¥ 2,449

Post-Retirement Benefit Oblig_7

Post-Retirement Benefit Obligations - Summary of Movements in Post-retirement Benefit Obligations (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of movements in defined benefit liability [abstract]
Beginning balance	¥ 2,538	¥ 2,584
Pension cost charged to profit or loss, Service cost	0
Pension cost charged to profit or loss, Net interest	83	85	¥ 92
Pension cost charged to profit or loss, Sub-total included in profit or loss	83	85
Remeasurement (gains)/losses in other comprehensive income, Actuarial changes arising from changes in financial assumptions	140
Remeasurement (gains)/losses in other comprehensive income, Actuarial changes arising from changes in demographic assumptions	0
Remeasurement (gains)/losses in other comprehensive income, Experience adjustments	(56)	61
Remeasurement (gains)/losses in other comprehensive income, Sub-total included in other comprehensive income	84	61
Benefit settled	(178)	(192)
Ending balance	¥ 2,527	¥ 2,538	¥ 2,584

Post-Retirement Benefit Oblig_8

Post-Retirement Benefit Obligations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Average duration of the post-retirement benefit obligations	11 years	13 years

Other Long-term Liabilities - S

Other Long-term Liabilities - Summary of Other Long-term Liabilities (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]
Long-term duties and levies payable relating to finance leases	¥ 908	¥ 1,159
Deferred gains relating to government grants	91	121
Provision for early retirement benefit obligations and other benefit obligations	315	251
Other long-term payables	1,227	659
Other long-term liabilities	2,541	2,190
Less: current portion included in other payables and accruals (Note 36)	(293)	(235)
Non-current portion	¥ 2,248	¥ 1,955

Share Capital - Summary of Shar

Share Capital - Summary of Share Capital (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of classes of share capital [Line items]
Share capital	¥ 18,874	¥ 16,379
Class A shares [member]
Disclosure of classes of share capital [Line items]
Share capital	13,697	11,202
Class A shares [member] | Tradable shares with trading moratorium [member]
Disclosure of classes of share capital [Line items]
Share capital	3,889	1,394
Class A shares [member] | Tradable shares without trading moratorium [member]
Disclosure of classes of share capital [Line items]
Share capital	9,808	9,808
H shares [member]
Disclosure of classes of share capital [Line items]
Share capital	5,177	5,177
H shares [member] | Tradable shares with trading moratorium [member]
Disclosure of classes of share capital [Line items]
Share capital	518	518
H shares [member] | Tradable shares without trading moratorium [member]
Disclosure of classes of share capital [Line items]
Share capital	¥ 4,659	¥ 4,659

Share Capital - Summary of Sh_2

Share Capital - Summary of Share Capital (Parenthetical) (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Millions, shares in Millions	Oct. 27, 2021	Dec. 31, 2021	Dec. 31, 2019
Statement [Line Items]
Proceeds from issue of shares		¥ 10,820	¥ 9,442
Par value per share		¥ 1
Parent [member] | The Non Public Issuance | Class A shares [member]
Statement [Line Items]
Number Of Shares Issued	2,495
Proceeds from issue of shares	¥ 10,820

Reserves - Summary of Reserves

Reserves - Summary of Reserves (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of reserves within equity [Line Items]
Beginning balance	¥ 59,154	¥ 72,646	¥ 59,843
Fair value changes of available-for-sale investments held by an associate	(7)	2
Actuarial gains (losses) on post-retirement benefit obligations	(84)	(61)	40
Loss for the year	(13,284)	(12,561)	3,480
Issue of ordinary shares, net of transaction costs and tax			9,442
Ending balance	57,152	59,154	72,646
Share premium [member]
Disclosure of reserves within equity [Line Items]
Beginning balance	37,070	37,070
Unrealised gains on cash flow hedges	0
Fair value movements in equity investments designated at fair value through other comprehensive income	0
Fair value changes of available-for-sale investments held by an associate	0
Actuarial gains (losses) on post-retirement benefit obligations	0
Loss for the year	0
Issue of ordinary shares, net of transaction costs and tax	8,325
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	0
Transactions with non-controlling interests (Note 21(b))	(689)
Ending balance	44,706	37,070	37,070
Capital reserve [member]
Disclosure of reserves within equity [Line Items]
Beginning balance	(767)	(767)
Unrealised gains on cash flow hedges	0
Fair value movements in equity investments designated at fair value through other comprehensive income	0
Fair value changes of available-for-sale investments held by an associate	0
Actuarial gains (losses) on post-retirement benefit obligations	0
Loss for the year	0
Issue of ordinary shares, net of transaction costs and tax	0
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	0
Transactions with non-controlling interests (Note 21(b))	0
Ending balance	(767)	(767)	(767)
Hedging reserve [member]
Disclosure of reserves within equity [Line Items]
Beginning balance	182	24
Unrealised gains on cash flow hedges	(228)	158
Fair value movements in equity investments designated at fair value through other comprehensive income	0
Fair value changes of available-for-sale investments held by an associate	0
Actuarial gains (losses) on post-retirement benefit obligations	0
Loss for the year	0
Issue of ordinary shares, net of transaction costs and tax	0
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	0
Transactions with non-controlling interests (Note 21(b))	0
Ending balance	(46)	182	24
Statutory reserve [member]
Disclosure of reserves within equity [Line Items]
Beginning balance	782	782
Unrealised gains on cash flow hedges	0
Fair value movements in equity investments designated at fair value through other comprehensive income	0
Fair value changes of available-for-sale investments held by an associate	0
Actuarial gains (losses) on post-retirement benefit obligations	0
Loss for the year	0	0
Issue of ordinary shares, net of transaction costs and tax	0
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	0
Transactions with non-controlling interests (Note 21(b))	0
Ending balance	782	782	782
Other reserves [member]
Disclosure of reserves within equity [Line Items]
Beginning balance	(2,624)	(2,362)
Unrealised gains on cash flow hedges	0
Fair value movements in equity investments designated at fair value through other comprehensive income	(237)	(203)
Fair value changes of available-for-sale investments held by an associate	(7)	2
Actuarial gains (losses) on post-retirement benefit obligations	(79)	(61)
Loss for the year	0
Issue of ordinary shares, net of transaction costs and tax	0
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	(157)
Transactions with non-controlling interests (Note 21(b))	0
Ending balance	(3,104)	(2,624)	(2,362)
Retainedearnings/ (accumulated losses )[member]
Disclosure of reserves within equity [Line Items]
Beginning balance	5,227	17,882	14,901
Unrealised gains on cash flow hedges	0
Fair value movements in equity investments designated at fair value through other comprehensive income	0
Fair value changes of available-for-sale investments held by an associate	0
Actuarial gains (losses) on post-retirement benefit obligations	0
Loss for the year	(12,214)	(11,836)	3,192
Final dividend		(819)
Issue of ordinary shares, net of transaction costs and tax	0
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	157
Transactions with non-controlling interests (Note 21(b))	0
Ending balance	(6,830)	5,227	17,882
Retained earnings and other reserves
Disclosure of reserves within equity [Line Items]
Beginning balance	39,870	52,629
Unrealised gains on cash flow hedges	(228)	158
Fair value movements in equity investments designated at fair value through other comprehensive income	(237)	(203)
Fair value changes of available-for-sale investments held by an associate	(7)	2
Actuarial gains (losses) on post-retirement benefit obligations	(79)	(61)
Loss for the year	(12,214)	(11,836)
Final dividend		(819)
Issue of ordinary shares, net of transaction costs and tax	8,325
Transfer of gain on disposal of equity investments at fair value through other comprehensive income to retained earnings	0
Transactions with non-controlling interests (Note 21(b))	(689)
Ending balance	¥ 34,741	¥ 39,870	¥ 52,629

Notes to the Consolidated Sta_3

Notes to the Consolidated Statement of Cash Flows - Summary of Notes to Statement of Consolidated Cash Flows (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of cash flows [abstract]
(Loss)/profit before income tax	¥ (17,513)	¥ (16,488)	¥ 4,299
Adjustments for:
Depreciation of property, plant and equipment	9,490	9,067	9,078
Depreciation of right-of-use assets	12,389	12,367	12,298
Depreciation of investment properties	10	12	25
Amortization of intangible assets	210	239	143
Amortization of other non-current assets	619	570	536
Gain on disposal of property, plant and equipment and right-of-use assets	(719)	(17)	(22)
Gain on disposal of an investment in subsidiaries, associates and joint ventures	(142)		(64)
Dividend income from equity investments at fair value through other comprehensive income	(3)	(12)	(19)
Dividend income from a financial asset at fair value through profit or loss	(5)	(6)	(3)
Share of results of associates	97	82	(265)
Share of results of joint ventures	44	13	(17)
Net foreign exchange (gains)/loss	(1,506)	(2,746)	890
Financial asset at fair value through profit or loss	11	26	(25)
COVID-19-related rent concessions from lessors	0	(3)
Impairment charges	22	184	4
Impairment losses on financial assets, net	28	32	16
Interest expense	5,812	5,214	5,169
Operating profit before working capital changes	8,844	8,534	32,043
Changes in working capital
Flight equipment spare parts	240	200	(457)
Trade receivables	159	593	(275)
Prepayments and other receivables	(916)	2,893	(2,336)
Contract liabilities	(805)	(6,686)	1,281
Restricted bank deposits	0	(6)	9
Trade and bills payables	(766)	(657)	(163)
Other payables and accruals	(1,686)	(983)	1,459
Other long-term liabilities	489	(2,174)	(1,916)
Post-retirement benefit obligations	(11)	(46)	(125)
Provision for lease return costs for aircraft and engines	280	(188)	617
Cash generated from operations	¥ 5,828	¥ 1,480	¥ 30,137

Notes to the Consolidated Sta_4

Notes to the Consolidated Statement of Cash Flows - Summary of Major Non-cash Transactions (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of cash flows [abstract]
Additions to right-of-use assets and reserve (Note 21(b))	¥ 744
Additions to right-of-use assets and lease liabilities	¥ 18,202	¥ 7,191

Notes to the Consolidated Sta_5

Notes to the Consolidated Statement of Cash Flows - Summary of Changes in Liabilities Arising from Financing Activities (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]
COVID-19-related rent concessions from lessors	¥ 0	¥ (3)
Bank and other loans [member]
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]
Beginning balance	87,895	51,837	¥ 55,126
Changes from financing cash flows	7,778	36,173	(3,427)
COVID-19-related rent concessions from lessors	0
Other addition	702
Foreign exchange movement	(584)	(115)	138
New leases	0
Ending balance	95,791	87,895	51,837
Lease liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]
Beginning balance	96,251	110,275	109,306
Changes from financing cash flows	(15,725)	(18,444)	(23,895)
COVID-19-related rent concessions from lessors	0	(3)
Other addition	486
Foreign exchange movement	(738)	(2,768)	851
Disposal of a subsidiary			(10)
New leases	18,202	7,191	24,023
Ending balance	¥ 98,476	¥ 96,251	¥ 110,275

Notes to the Consolidated Sta_6

Notes to the Consolidated Statement of Cash Flows - Disclosure Of Detailed Information About Cash Flow Information For Leases Explanatory (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of reconciliation of liabilities arising from financing activities [abstract]
Within operating activities	¥ (383)	¥ (358)	¥ (631)
Within investing activities	(1,516)	(1,183)	(1,449)
Within financing activities	¥ (18,838)	¥ (22,099)	¥ (27,789)

Commitments - Additional Inform

Commitments - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of Capital Commitments [line items]
Short term lease commitments	¥ 59	¥ 130
Not later than one year [member]
Disclosure of Capital Commitments [line items]
Future lease payments	283	62
Later than one year and not later than five years [member]
Disclosure of Capital Commitments [line items]
Future lease payments	2,006	123
Later than five years [member]
Disclosure of Capital Commitments [line items]
Future lease payments	¥ 3,730	¥ 0

Commitments - Summary of Capita

Commitments - Summary of Capital Commitments (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of capital commitments [Line Items]
Capital commitments	¥ 30,065	¥ 42,258
Aircraft, engines and flight equipment [member]
Disclosure of capital commitments [Line Items]
Capital commitments	24,922	37,277
Other property, plant and equipment [member]
Disclosure of capital commitments [Line Items]
Capital commitments	2,980	3,646
Investments [member]
Disclosure of capital commitments [Line Items]
Capital commitments	¥ 2,163	¥ 1,335

Commitments - Summary of Aged A

Commitments - Summary of Aged Analysis of Contracted Expenditures for Aircraft, Engines and Flight Equipment (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of capital commitments [Line Items]
Capital commitments	¥ 30,065	¥ 42,258
Aircraft [member]
Disclosure of capital commitments [Line Items]
Capital commitments	24,922	37,277
Aircraft [member] | Less than 1 year [member]
Disclosure of capital commitments [Line Items]
Capital commitments	9,530	13,542
Aircraft [member] | 1 to 2 years [member]
Disclosure of capital commitments [Line Items]
Capital commitments	8,018	13,692
Aircraft [member] | In the third year [member]
Disclosure of capital commitments [Line Items]
Capital commitments	7,374	7,109
Aircraft [member] | Later than three years [member]
Disclosure of capital commitments [Line Items]
Capital commitments	¥ 0	¥ 2,934

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [Line Items]
Accretion of interest recognised during the year	¥ 3,113	¥ 3,655	¥ 3,894
China Eastern Air Holding Company [member]
Disclosure of transactions between related parties [Line Items]
Percentage of shares owned by related party	40.10%	30.97%
Bonds guaranteed by CEA Holding	¥ 7,800	¥ 7,800
CES Global Holdings (Hong Kong) Limited [member]
Disclosure of transactions between related parties [Line Items]
Percentage of shares owned by related party	13.91%	16.03%
CES Finance Holding Co., Ltd. [member]
Disclosure of transactions between related parties [Line Items]
Percentage of shares owned by related party	2.42%	2.79%
CES International Financial Leasing Corporation Limited [member]
Disclosure of transactions between related parties [Line Items]
Accretion of interest recognised during the year	¥ 1,311
Lease liabilities due to related parties	46,251	¥ 42,168
CES International Financial Leasing Corporation Limited [member] | Aircraft [member]
Disclosure of transactions between related parties [Line Items]
Additions	11,061
Shanghai Eastern Airlines Investment Co., Ltd. [member]
Disclosure of transactions between related parties [Line Items]
Accretion of interest recognised during the year	31
Shanghai Eastern Airlines Investment Co., Ltd. [member] | Lease liabilities [member]
Disclosure of transactions between related parties [Line Items]
Lease liabilities due to related parties	255
Shanghai Eastern Airlines Investment Co., Ltd. [member] | Land and buildings [member]
Disclosure of transactions between related parties [Line Items]
Additions	302
CEA Development Co., Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [Line Items]
Accretion of interest recognised during the year	9
CEA Development Co., Ltd. and its subsidiaries [member] | Lease liabilities [member]
Disclosure of transactions between related parties [Line Items]
Lease liabilities due to related parties	323
CEA Development Co., Ltd. and its subsidiaries [member] | Special Vehicle and Equipment [Member]
Disclosure of transactions between related parties [Line Items]
Additions	195
CEA China Eastern Air Catering Investment Co., Ltd [Member] | Lease liabilities [member]
Disclosure of transactions between related parties [Line Items]
Lease liabilities due to related parties	¥ 2

Related Party Transactions - Su

Related Party Transactions - Summary of Nature of Related Parties (Detail)	12 Months Ended
	Dec. 31, 2021
Eastern Air Group Finance Company [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
Eastern Aviation Import & Export Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
Eastern Aviation Advertising Service Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
Shanghai Collins Aviation Maintenance Service Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
CAE Melbourne Flight Training Pty Limited [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Joint venture of the Company
Shanghai Technologies Aerospace Co Ltd [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Joint venture of the Company
Eastern China Kaiya System Integration Co Ltd [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Joint venture of the Company
CEA Development Co., Ltd. and its subsidiaries [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Controlled by the same parent company
China Eastern Air Catering Investment Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
CES International Financial Leasing Corporation Limited [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Controlled by the same parent company
Shanghai Eastern Airlines Investment Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Controlled by the same parent company
Shanghai Eastern Airlines Logistics Co., Ltd. and its Subsidiaries [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Controlled by the same parent company
Travelsky technology limited [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	A key management personnel of the Company is a director of Travelsky
Shanghai Airlines Tours International (Group) Co., Ltd. [member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Associate of the Company
Xi An Cea Safran Landing Systems Services Co Ltd XIESA [Member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Joint venture of the Company
Sichuan Airlines Co.,Ltd [Member]
Disclosure of nature of related parties [line items]
Relationship with the Group	A key management personnel of the Company is a director of Sichuan Air
Air FranceKLM Group [Member]
Disclosure of nature of related parties [line items]
Relationship with the Group	A key management personnel of the Company is a director of AFK
Juneyao Airlines Co., Ltd and its subsidiaries [Member]
Disclosure of nature of related parties [line items]
Relationship with the Group	Shareholder who hold more than 5% of the company’s voting shares

Related Party Transactions - _2

Related Party Transactions - Summary of Related Party Transactions (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)			¥ 0	¥ 0
China Eastern Airlines Grand Hotel Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Percentage of equity disposed	100.00%
Yunnan Civil Aviation Kaiya Information Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Percentage of equity disposed	49.00%
Beijing Xinghang Aviation Property Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Percentage of equity disposed	27.50%
Interest Expense on Loans [Member] | Aircraft [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		¥ 83	37	21
CEA Development Co., Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		5	0	0
CEA Development Co., Ltd. and its subsidiaries [member] | Equipment Maintenance Fee [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		48	81	98
CEA Development Co., Ltd. and its subsidiaries [member] | Automobile Maintenance Service, Aircraft Maintenance, Providing Transportation Automobile and Other Products [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		2	4	13
CEA Development Co., Ltd. and its subsidiaries [member] | Property Management and Green Maintenance Expenses [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		185	195	205
CEA Development Co., Ltd. and its subsidiaries [member] | Payments on hotel accommodation service [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		120	122	134
Eastern Aviation Import & Export Co., Ltd. [member] | Payments on food and beverages [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		62	50	56
Eastern Aviation Import & Export Co., Ltd. [member] | Handling Charges for Purchase of Aircraft, Flight Equipment, Flight Equipment Spare Parts, Other Property, Plant and Flight Equipment and Repairs for Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		135	132	142
Eastern Aviation Import & Export Co., Ltd. [member] | Payments on logistics services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0		49
Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. [member] | Repairs and Maintenance Expense for Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		973	1,180	1,762
Shanghai Technologies Aerospace Co., Ltd. [member] | Repairs and Maintenance Expense for Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		179	184	221
Wheels & Brakes [member] | Repairs and Maintenance Expense for Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0	45	144
Shanghai Hute Aviation Technology Co., Ltd. [member] | Repairs and Maintenance Expense for Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0	116	88
Eastern Aviation Advertising Service Co., Ltd. [member] | Payments on cabin cleaning services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		3	9	22
Eastern Aviation Advertising Service Co., Ltd. [member] | Advertising Expense [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		25	26	29
Eastern Aviation Advertising Service Co., Ltd. [member] | Media Royalty Fee [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		14	14	15
China Kaiya [member] | Payments on system services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		16	18	16
Shanghai Collins Aviation Maintenance Service Co., Ltd. [member] | Equipment Maintenance Fee [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		36	33	45
Travelsky technology limited [member] | Civil Aviation Information Network Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		230	552	753
Travelsky technology limited [member] | Disposal of a Subsidiary [member] | Yunnan Civil Aviation Kaiya Information Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		8	0	0
CASC [member] | Flight Equipment Spare Parts Maintenance [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0	107	143
AFK [member] | Payments on Aviation Transportation Cooperation and Support Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		65	221	537
AFK [member] | Flight equipment spare parts maintenance and support services [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		22	10	19
AFK [member] | Aviation Transportation Cooperation Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		14	105	593
China Eastern Air Holding Company [member] | Payments on food and beverages [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		1,636	812	1,471
China Eastern Air Holding Company [member] | Interest Expense on Loans [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		41	32	27
Eastern Logistics [member] | Payments on logistics services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		103	115	53
Eastern Logistics [member] | Bellyhold Space Operation Cost [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0		310
Eastern Logistics [member] | Transfer of the Pilots [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		29
Eastern Logistics [member] | Cargo Terminal Business Support Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		369	286	481
Eastern Logistics [member] | Bellyhold Container Management [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		13	13	13
Eastern Logistics [member] | Contractual revenue from Bellyhold Space [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0		3,826
Eastern Logistics [member] | Freight logistics support services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		192	185	135
Eastern Logistics [member] | Software system and support services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		14	5	4
Eastern Logistics [member] | Exclusive operation transportation in relation to the passenger aircraft cargo business [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		8,309	4,895
Eastern Logistics [member] | Transfer of pilots [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0		11
Eastern Logistics [member] | Rental Income for Intangible Assets [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		5	0	0
Eastern Logistics [member] | Rental Income for Cargo Terminal [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		81	0	0
Eastern Air Finance [member] | Interest Expense on Loans [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		21	5	5
Eastern Air Finance [member] | Interest Income on Deposits [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		20	24	15
Juneyao Air [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		4	0	0
Juneyao Air [Member] | Payments on Aviation Transportation Cooperation and Support Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		4	2	2
Juneyao Air [Member] | Flight equipment spare parts maintenance and support services [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		24	35	41
Juneyao Air [Member] | Transfer of pilots [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		4	22
Juneyao Air [Member] | Aviation Transportation Cooperation Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		16	14	11
Eastern Investments [Member] | Settlements of Lease Liabilities on Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		210	98	83
Eastern Investments [Member] | Disposal of a Subsidiary [member] | Beijing Xinghang Aviation Property Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		29	0	0
Eastern Investments [Member] | Payments on construction and and management agent [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		14	13	14
Shanghai Airlines Co., Ltd. [member] | Payments on hotel accommodation service [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		40	10	23
China Eastern Air Catering Investment Co Ltd [member] | Rental income for land and buildings under short- term leases
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		48	15	0
XIESA [Member] | Repairs and Maintenance Expense for Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0	67	2
CES Lease Company [Member] | Settlements of Lease Liabilities on Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		7,245	6,667	5,779
CAE Melbourne [Member] | Flight Training Fee [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0	41	70
CAE Melbourne [Member] | Interest income on loans [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		0	1	0
Eastern Air Catering | Lease payments for land and buildings [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		2	0	0
Eastern Air Catering | Sale of Goods [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		48	0	0
Eastern Air Catering | Catering Trolleys and Aircraft on Board Supplies [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		123
Sichuan Airlines Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		9	0	0
Sichuan Airlines Co Ltd [Member] | Disposal of a Subsidiary [member] | China Eastern Airlines Grand Hotel Co Ltd [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		97	0	0
Sichuan Airlines Co Ltd [Member] | Aviation Transportation Cooperation Services [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		10	0	0
Eastern Investment [Member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		3	0	0
Eastern Import and Export [Member] | Rental income for land and buildings under short- term leases
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		3	0	0
CEA Holdings [Member] | Settlements of Lease Liabilities on Aircraft and Engines [member]
Disclosure of transactions between related parties [Line Items]
Income or receipts/(expense or payments)		¥ 7	¥ 36	¥ 40

Related Party Transactions - _3

Related Party Transactions - Summary of Balances with Related Parties (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of balances between related parties [line items]
Trade and notes receivables	¥ 521	¥ 642
Trade and bills payables	1,526	1,270
Amounts due from related parties	382	768
Other payables and accruals	213	398
Long-term borrowings (included in borrowings) CEA Holding	50,792	30,745
China Eastern Air Catering Investment Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and notes receivables	17	0
Trade and bills payables	583	266
Amounts due from related parties	55	36
Other Long Term Liabilities Related Party Transactions	64	0
Eastern Aviation Import & Export Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	472	363
Amounts due from related parties	134	158
Other payables and accruals	0	37
Shanghai Technologies Aerospace Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	59	95
Amounts due from related parties	6	6
Eastern Aviation Advertising Service Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Amounts due from related parties	0	1
CEA Development Co., Ltd. and its subsidiaries [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	81	96
Amounts due from related parties	1	11
Other payables and accruals	15	1
China Eastern Air Holding Company [member]
Disclosure of balances between related parties [line items]
Amounts due from related parties	¥ 10	¥ 228
Short term​ borrowing​ average​ interest​ rate	2.80%
Long-term borrowings (included in borrowings) CEA Holding	0.00%	3.86%
Short term borrowing due to related parties	¥ 11,000
Long-term borrowings (included in borrowings) CEA Holding	0	¥ 828
CASC [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	0	27
Amounts due from related parties	0	13
Other payables and accruals	0	2
TravelSky [member]
Disclosure of balances between related parties [line items]
Amounts due from related parties	42	49
Shanghai Eastern Airlines Tour [Member]
Disclosure of balances between related parties [line items]
Trade and bills payables	0	1
Others [member]
Disclosure of balances between related parties [line items]
Trade and notes receivables	2	4
Trade and bills payables	6	13
Amounts due from related parties	9	22
Other payables and accruals	5	7
Shanghai Collins Aviation Maintenance Service Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	8	9
China Eastern Air Holding Company [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	23	28
Other payables and accruals	68	99
Shanghai Hute Aviation Technology Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	0	32
Shanghai Pratt & Whitney Aircraft Engine Maintenance Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	280	213
Shanghai Eastern Union Aviation Wheels & Brakes Maintenance Services Overhaul Engineering Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	0	14
Travelsky technology limited [member]
Disclosure of balances between related parties [line items]
Trade and bills payables	7	7
Shanghai Eastern Airlines Investment Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Other payables and accruals	61	61
CES International Financial Leasing Corporation Limited [member]
Disclosure of balances between related parties [line items]
Other payables and accruals	63	189
Lease liabilities due to related parties	¥ 46,251	¥ 42,168
Eastern Air Group Finance Co., Ltd. [member]
Disclosure of balances between related parties [line items]
Short term deposits average interest rate	0.23%	0.35%
Short deposits with related parties	¥ 12,269	¥ 5,474
CAE Melbourne [member]
Disclosure of balances between related parties [line items]
Average interest rate of loan to joint venture	8.00%	3.74%
Loan to joint venture CAE Melbourne	¥ 6	¥ 11
Juneyao Air [Member]
Disclosure of balances between related parties [line items]
Trade and notes receivables	5	8
Amounts due from related parties	5	4
Eastern Logistics [member]
Disclosure of balances between related parties [line items]
Trade and notes receivables	497	630
XIESA [Member]
Disclosure of balances between related parties [line items]
Trade and bills payables	0	32
Eastern Air Finance Company [Member]
Disclosure of balances between related parties [line items]
Amounts due from related parties	120	240
Other payables and accruals	¥ 1	¥ 2
Short term​ borrowing​ average​ interest​ rate	2.80%	2.80%
Short term borrowing due to related parties	¥ 6,000	¥ 4,000
Eastern Investment [Member]
Disclosure of balances between related parties [line items]
Trade and bills payables	¥ 1	¥ 74
Short term​ borrowing​ average​ interest​ rate	2.80%
Short term borrowing due to related parties	¥ 7,700
Eastern Advertising [Member]
Disclosure of balances between related parties [line items]
Trade and bills payables	¥ 6

Related Party Transactions - _4

Related Party Transactions - Summary of Key Management Compensation (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [Line Items]
Compensation paid or payable to key management for employee services	¥ 3	¥ 5	¥ 9
Directors and Supervisors [member]
Disclosure of transactions between related parties [Line Items]
Compensation paid or payable to key management for employee services	2	4	1
Senior Management [member]
Disclosure of transactions between related parties [Line Items]
Compensation paid or payable to key management for employee services	¥ 1	¥ 1	¥ 8

Financial Instruments by Cate_3

Financial Instruments by Category (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [Line Items]
Total	¥ 17,016	¥ 12,878
Total	210,251	203,297
Derivative financial instruments assets	0	399
Derivative financial instruments liabilities	46	141
Derivative financial liabilities instruments [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments liabilities	46	141
Equity investments designated at fair value through other comprehensive income [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at fair value through other comprehensive income	457	995
Derivative financial assets instruments [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments assets	0	399
Financial assets included in other non-current assets [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at amortized cost	142	150
Trade and notes receivables [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at amortized cost	974	1,124
Financial asset at fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at fair value through other comprehensive income	84	95
Financial assets included in prepayments and other receivables [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at amortized cost	2,397	2,452
Restricted bank deposits and short-term bank deposits [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at amortized cost	12	12
Cash and Cash Equivalent [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial assets at amortized cost	12,950	7,651
Trade and bills payables [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial Liabilities at amortised cost	2,454	3,220
Financial liabilities included in other payables and accruals [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial Liabilities at amortised cost	13,484	15,790
Borrowings in financial liabilities [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial Liabilities at amortised cost	95,791	87,895
Lease liabilities [member]
Disclosure of detailed information about financial instruments [Line Items]
Financial Liabilities at amortised cost	¥ 98,476	¥ 96,251

Fair Value and Fair Value Hie_3

Fair Value and Fair Value Hierarchy of Financial Instruments - Summary of Financial Instruments Not Measured at Fair Value (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Equity investments designated at fair value through other comprehensive income	¥ 457	¥ 995
Financial asset at fair value through profit or loss	84	95
Derivative financial assets	0	399
Deposits relating to aircraft held under leases included in other non-current assets	140	143
Total	17,016	12,878
Derivative financial liabilities	46	141
Long-term borrowings	50,792	30,745
Lease liabilities	82,126	82,178
Total	210,251	203,297
Carrying amount [member] | Financial liabilities [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Derivative financial liabilities	46	141
Long-term borrowings	50,792	30,745
Lease liabilities	82,126	82,178
Total	132,964	113,064
Carrying amount [member] | Financial assets [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Equity investments designated at fair value through other comprehensive income	457	995
Financial asset at fair value through profit or loss	84	95
Derivative financial assets	0	399
Deposits relating to aircraft held under leases included in other non-current assets	140	143
Total	681	1,632
Not measured at fair value but for which fair values are disclosed [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Deposits relating to aircraft held under leases included in other non-current assets	139	142
Long-term borrowings	49,971	32,355
Total	131,203	115,008
Not measured at fair value but for which fair values are disclosed [member] | Financial liabilities [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Derivative financial liabilities	46	141
Long-term borrowings	49,971	32,355
Lease liabilities	81,232	82,653
Total	131,249	115,149
Not measured at fair value but for which fair values are disclosed [member] | Financial assets [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Equity investments designated at fair value through other comprehensive income	457	995
Financial asset at fair value through profit or loss	84	95
Derivative financial assets	0	399
Deposits relating to aircraft held under leases included in other non-current assets	139	142
Total	¥ 680	¥ 1,631

Fair Value and Fair Value Hie_4

Fair Value and Fair Value Hierarchy of Financial Instruments - Summary of Significant Unobservable Inputs to the Valuation of Financial Instruments Together with a Quantitative Sensitivity Analysis (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Valuation technique	Valuation multiples
Significant unobservable input	Discount for lack of marketability
Sensitivity of fair value to the input	1% (December 31, 2020: 1%) increase/decrease in multiple would result in increase/ decrease in fair value by RMB 3 million (December 31, 2020: RMB 5 million)
Bottom of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Range	20.00%	20.00%
Top of range [member]
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items]
Range		35.00%

Fair Value and Fair Value Hie_5

Fair Value and Fair Value Hierarchy of Financial Instruments - Summary of Fair Value Hierarchy of Assets and Liabilities Measured at Fair Value (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [Line Items]
Equity investments designated at fair value through other comprehensive income	¥ 457	¥ 995
Derivative financial assets	0	399
Financial asset at fair value through profit or loss	84	95
Total, assets	17,016	12,878
Derivative financial instruments, liabilities	46	141
Total, liabilities	210,251	203,297
Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial assets	0
Derivative financial instruments, liabilities	46	140
At fair value [member]
Disclosure of detailed information about financial instruments [Line Items]
Equity investments designated at fair value through other comprehensive income	457	995
Financial asset at fair value through profit or loss	84	95
Total, assets	541	1,489
Total, liabilities	46	141
At fair value [member] | Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, liabilities	46	140
At fair value [member] | Forward fuel contracts [Member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial assets		399
Derivative financial instruments, liabilities		1
At fair value [member] | Quoted prices in active markets (Level 1) [member]
Disclosure of detailed information about financial instruments [Line Items]
Equity investments designated at fair value through other comprehensive income	237	457
Financial asset at fair value through profit or loss	84	95
Total, assets	321	552
Total, liabilities	0
At fair value [member] | Quoted prices in active markets (Level 1) [member] | Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, liabilities	0
At fair value [member] | Significant observable inputs (Level 2) [member]
Disclosure of detailed information about financial instruments [Line Items]
Equity investments designated at fair value through other comprehensive income	0
Financial asset at fair value through profit or loss	0
Total, assets	0	399
Total, liabilities	46	141
At fair value [member] | Significant observable inputs (Level 2) [member] | Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, liabilities	46	140
At fair value [member] | Significant observable inputs (Level 2) [member] | Forward fuel contracts [Member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial assets		399
Derivative financial instruments, liabilities		1
At fair value [member] | Significant unobservable inputs (Level 3) [member]
Disclosure of detailed information about financial instruments [Line Items]
Equity investments designated at fair value through other comprehensive income	220	538
Financial asset at fair value through profit or loss	0
Total, assets	220	¥ 538
Total, liabilities	0
At fair value [member] | Significant unobservable inputs (Level 3) [member] | Interest rate swaps [member]
Disclosure of detailed information about financial instruments [Line Items]
Derivative financial instruments, liabilities	¥ 0

Fair value and fair value hie_6

Fair value and fair value hierarchy of financial instruments - Summary of the Changes in Level 3 Items (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021CNY (¥)
Disclosure of fair value measurement of assets [line items]
Opening balance	¥ 284,650
Closing balance	288,790
Level 3 of fair value hierarchy [member] | At fair value [member] | Equity investments designated at fair value through other comprehensive income [member]
Disclosure of fair value measurement of assets [line items]
Opening balance	538
Disposals	(75)
Recognised in other comprehensive income – net	(243)
Closing balance	¥ 220

Fair Value and Fair Value Hie_7

Fair Value and Fair Value Hierarchy of Financial Instruments - Summary of Fair Value Hierarchy of Assets and Liabilities for which Fair Values are Disclosed (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [Line Items]
Deposits relating to aircraft held under leases included in other non-current assets	¥ 140	¥ 143
Long-term bank borrowings	50,792	30,745
Total	210,251	203,297
Not measured at fair value but for which fair values are disclosed [member]
Disclosure of detailed information about financial instruments [Line Items]
Deposits relating to aircraft held under leases included in other non-current assets	139	142
Long-term bank borrowings	49,971	32,355
Lease liabilities	81,232	82,653
Total	131,203	115,008
Not measured at fair value but for which fair values are disclosed [member] | Quoted prices in active markets (Level 1) [member]
Disclosure of detailed information about financial instruments [Line Items]
Deposits relating to aircraft held under leases included in other non-current assets	0
Long-term bank borrowings	0	4,936
Lease liabilities	0
Total	0	4,936
Not measured at fair value but for which fair values are disclosed [member] | Significant observable inputs (Level 2) [member]
Disclosure of detailed information about financial instruments [Line Items]
Deposits relating to aircraft held under leases included in other non-current assets	139	142
Long-term bank borrowings	49,971	27,419
Lease liabilities	81,232	82,653
Total	131,203	¥ 110,072
Not measured at fair value but for which fair values are disclosed [member] | Significant unobservable inputs (Level 3) [member]
Disclosure of detailed information about financial instruments [Line Items]
Deposits relating to aircraft held under leases included in other non-current assets	0
Long-term bank borrowings	0
Lease liabilities	0
Total	¥ 0

Financial Risk Management - Add

Financial Risk Management - Additional Information (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Balance due from BSP agents	¥ 1,051	¥ 1,210
Fuel price risk [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Percentage change in fuel price	5.00%
Increase in fuel cost due to a potential change in fuel prices [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Change in fuel costs due to a potential change in fuel prices	¥ 1,030	692
Billing and settlements plan agents [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Balance due from BSP agents	¥ 185	¥ 165

Financial Risk Management - Sum

Financial Risk Management - Summary of Foreign Currency Risk (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade receivables	¥ 1,051	¥ 1,210
Cash and cash equivalents	12,950	7,651
Other non-current assets	4,469	5,345
Trade and other payables	(2,454)	(3,220)
Borrowings	(95,791)	(87,895)
Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	(98,476)	(96,251)	¥ (110,275)
USD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade receivables	11	10
Cash and cash equivalents	96	968
Other receivables	32	115
Other non-current assets	1,428	150
Trade and other payables	(118)	(108)
Borrowings	(13)	(375)
USD [member] | Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	(30,710)	(36,267)
EUR [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade receivables	5	2
Cash and cash equivalents	7	4
Other receivables	0	3
Other non-current assets	0
Trade and other payables	(12)	(1)
Borrowings	(1,957)	(2,664)
EUR [member] | Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	(10)	(8)
SGD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade receivables	0	0
Cash and cash equivalents	28	3
Other receivables	1	1
Other non-current assets	0
Trade and other payables	0
Borrowings	(2,371)	(2,466)
SGD [member] | Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	(6)	(85)
KRW [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade receivables	3	2
Cash and cash equivalents	5	3
Other receivables	11	12
Other non-current assets	0
Trade and other payables	0
Borrowings	0	(3,162)
KRW [member] | Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	¥ (67)	¥ (142)

Financial Risk Management - S_2

Financial Risk Management - Summary of Sensitivity Analysis of Foreign Currency Risk (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2021	Dec. 31, 2020
USD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	¥ 0
EUR [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	0
SGD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	0
KRW [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	0
Effect of change on profit or loss if currency weakens against foreign currency [member] | USD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	222,000	¥ (266,000)
Effect of change on profit or loss if currency weakens against foreign currency [member] | EUR [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	(15,000)	(20,000)
Effect of change on profit or loss if currency weakens against foreign currency [member] | SGD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency		(19,000)
Effect of change on profit or loss if currency weakens against foreign currency [member] | KRW [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	360	(25,000)
Effect of changeon profit or loss if currency strengthens against foreign currency [member] | USD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency		266,000
Effect of changeon profit or loss if currency strengthens against foreign currency [member] | EUR [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	15,000	20,000
Effect of changeon profit or loss if currency strengthens against foreign currency [member] | SGD [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency	¥ 18,000	19,000
Effect of changeon profit or loss if currency strengthens against foreign currency [member] | KRW [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if RMB (weakens)/strengthens against foreign currency		¥ 25,000

Financial Risk Management - S_3

Financial Risk Management - Summary of Interest Rate Risk (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Cash and cash equivalents	¥ 12,950	¥ 7,651
Borrowings	(95,791)	(87,895)
Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	(98,476)	(96,251)	¥ (110,275)
Floating interest rate [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Cash and cash equivalents	12,950	7,651
Restricted bank deposits	12	12
Borrowings	(26,146)	(13,328)
Floating interest rate [member] | Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	(62,406)	(44,541)
Floating interest rate [member] | Interest rate swaps [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Interest rate swaps at notional amount	3,154	4,504
Fixed interest rate [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Borrowings	(68,943)	(74,567)
Fixed interest rate [member] | Finance Lease [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Lease liabilities	¥ (35,584)	¥ (51,710)

Financial Risk Management - S_4

Financial Risk Management - Summary of Sensitivity Analysis of Interest Rate Risk (Detail) - Floating interest rate [member] - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Effect of change on profit or loss if floating interest rate increases [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if floating interest rate increases	¥ (142)	¥ (94)
Effect of change on other comprehensive income if floating interest rate increases [member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Effect on profit or loss/other comprehensive income if floating interest rate increases	¥ 6	¥ 8

Financial Risk Management - Su

Financial Risk Management - Summary of Credit Quality and the Maximum Exposure to Credit Risk Based on the Groups Credit Policy (Details) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of credit risk exposure [line items]
Total, assets	¥ 17,016	¥ 12,878
Trade receivables | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Total, assets	974	1,124
Financial Assets Included in Prepayments and Other Receivables | Gross carrying amount [member] | Normal [Member]
Disclosure of credit risk exposure [line items]
Total, assets	2,705	2,452
Restricted Bank Deposits | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	12	12
Cash and Cash Equivalents | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	12,950	7,651
12-month expected credit losses [member] | Stage One | Trade receivables | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
12-month expected credit losses [member] | Stage One | Financial Assets Included in Prepayments and Other Receivables | Gross carrying amount [member] | Normal [Member]
Disclosure of credit risk exposure [line items]
Total, assets	2,202	2,067
12-month expected credit losses [member] | Stage One | Restricted Bank Deposits | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	12	12
12-month expected credit losses [member] | Stage One | Cash and Cash Equivalents | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	12,950	7,651
Lifetime expected credit losses [member] | Simplified Approach | Trade receivables | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Total, assets	934	1,077
Lifetime expected credit losses [member] | Simplified Approach | Financial Assets Included in Prepayments and Other Receivables | Gross carrying amount [member] | Normal [Member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Simplified Approach | Restricted Bank Deposits | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Simplified Approach | Cash and Cash Equivalents | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Stage Two | Trade receivables | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Stage Two | Financial Assets Included in Prepayments and Other Receivables | Gross carrying amount [member] | Normal [Member]
Disclosure of credit risk exposure [line items]
Total, assets	271	274
Lifetime expected credit losses [member] | Stage Two | Restricted Bank Deposits | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Stage Two | Cash and Cash Equivalents | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Stage three | Trade receivables | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Total, assets	40	47
Lifetime expected credit losses [member] | Stage three | Financial Assets Included in Prepayments and Other Receivables | Gross carrying amount [member] | Normal [Member]
Disclosure of credit risk exposure [line items]
Total, assets	232	111
Lifetime expected credit losses [member] | Stage three | Restricted Bank Deposits | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	0	0
Lifetime expected credit losses [member] | Stage three | Cash and Cash Equivalents | Gross carrying amount [member] | Not Yet Past Due [Member]
Disclosure of credit risk exposure [line items]
Total, assets	¥ 0	¥ 0

Financial Risk Management - S_5

Financial Risk Management - Summary of Contractual Undiscounted Cash Flows of Financial Liabilities (Detail) - Finance Lease [Member] - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of maturity analysis for non-derivative and derivative financial liabilities [Line Items]
Borrowings	¥ 103,097	¥ 92,840
Derivative financial instruments	46	142
Lease liabilities	110,796	111,012
Trade, bills and other payables	15,939	19,010
Total	229,878	223,004
Less than 1 year [member]
Disclosure of maturity analysis for non-derivative and derivative financial liabilities [Line Items]
Borrowings	46,633	58,989
Derivative financial instruments	1	3
Lease liabilities	19,025	17,443
Trade, bills and other payables	15,939	19,010
Total	81,598	95,445
1 to 2 years [member]
Disclosure of maturity analysis for non-derivative and derivative financial liabilities [Line Items]
Borrowings	15,668	6,946
Derivative financial instruments	0	7
Lease liabilities	17,320	16,009
Trade, bills and other payables	0
Total	32,988	22,962
2 to 5 years [member]
Disclosure of maturity analysis for non-derivative and derivative financial liabilities [Line Items]
Borrowings	18,490	19,126
Derivative financial instruments	45	132
Lease liabilities	43,259	40,241
Trade, bills and other payables	0
Total	61,794	59,499
Over 5 years [member]
Disclosure of maturity analysis for non-derivative and derivative financial liabilities [Line Items]
Borrowings	22,306	7,779
Derivative financial instruments	0
Lease liabilities	31,192	37,319
Trade, bills and other payables	0
Total	¥ 53,498	¥ 45,098

Financial Risk Management - S_6

Financial Risk Management - Summary of Market Equity Indices for Stock Exchanges and their Respective Highest and Lowest Points (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Hong Kong [member] | Hang Seng Index [member]
Disclosure Of Change In Equity Price Risk [line items]
Market equity indices	23,398	27,231
Shanghai [member] | A Share Index [member]
Disclosure Of Change In Equity Price Risk [line items]
Market equity indices	3,640	3,640
Bottom of range [member] | Hong Kong [member] | Hang Seng Index [member]
Disclosure Of Change In Equity Price Risk [line items]
Market equity indices	22,665	21,696
Bottom of range [member] | Shanghai [member] | A Share Index [member]
Disclosure Of Change In Equity Price Risk [line items]
Market equity indices	3,313	2,788
Top of range [member] | Hong Kong [member] | Hang Seng Index [member]
Disclosure Of Change In Equity Price Risk [line items]
Market equity indices	31,183	29,056
Top of range [member] | Shanghai [member] | A Share Index [member]
Disclosure Of Change In Equity Price Risk [line items]
Market equity indices	3,732	3,640

Financial Risk Management - S_7

Financial Risk Management - Summary of Sensitivity to Every 10% Change in Fair Values of Equity Investments, with all other Variables Held Constant (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Equity investments designated at fair value through other comprehensive income [member] | Unlisted investments, at cost [Member]
Disclosure Of Change In Equity Price Risk [line items]
Carrying amount of equity investment	¥ 220	¥ 538
Increase in comprehensive income	17	40
Decrease in comprehensive income	(17)	(40)
Hong Kong [member] | Equity investments designated at fair value through other comprehensive income [member] | Listed investments [member]
Disclosure Of Change In Equity Price Risk [line items]
Carrying amount of equity investment	237	457
Increase in comprehensive income	18	34
Decrease in comprehensive income	(18)	(34)
Shanghai [member] | Assets at fair value through profit or loss [member] | Listed investments [member]
Disclosure Of Change In Equity Price Risk [line items]
Carrying amount of equity investment	84	95
Increase in profit or loss	6	7
Decrease in profit or loss	¥ (6)	¥ (7)

Financial Risk Management - S_8

Financial Risk Management - Summary of Debt Ratio (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Statement [Line Items]
Total assets	¥ 288,790	¥ 284,650
Restatement [Member]
Statement [Line Items]
Total liabilities	231,638	225,496
Total assets	¥ 288,790	¥ 284,650
Debt ratio	80.00%	79.00%

Financial Risk Management - S_9

Financial Risk Management - Summary of Fuel price risk (Details) - CNY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Effect Of Change On Other Comprehensive Income If Fuel Hedging Contracts Increase Decrease [Member]
Fuel price risk [Line Items]
Fuel hedging contracts	¥ 0	¥ 62