Magna International (MGA) 40-F 29 Mar 18 2017 FY Annual report (Canada) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2017shares
Document And Entity Information [Abstract]
Document Type	40-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	MGA
Entity Registrant Name	MAGNA INTERNATIONAL INC
Entity Central Index Key	749,098
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding	0

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Sales	$ 38,946	$ 36,445
Costs and expenses
Cost of goods sold	33,258	31,123
Depreciation and amortization	1,173	1,056
Selling, general and administrative	1,668	1,601
Interest expense, net	70	88
Equity income	(261)	(233)
Other expense, net	39	30
Income from operations before income taxes	2,999	2,780
Income taxes	744	706
Net income	2,255	2,074
Income attributable to non-controlling interests	(49)	(43)
Net income attributable to Magna International Inc.	$ 2,206	$ 2,031
Earnings per Common Share:
Basic	$ 5.93	$ 5.19
Diluted	$ 5.90	$ 5.16
Weighted average number of Common Shares outstanding during the year [in millions]:
Basic	371.8	391
Diluted	373.9	393.2

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 2,255	$ 2,074
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on translation of net investment in foreign operations	689	(134)
Net unrealized gain on cash flow hedges	114	1
Reclassification of net loss on cash flow hedges to net income	60	126
Reclassification of net loss on investments to net income		1
Reclassification of net loss on pensions to net income	5	9
Pension and post-retirement benefits	8	(29)
Other comprehensive income (loss)	876	(26)
Comprehensive income	3,131	2,048
Comprehensive income attributable to non-controlling interests	(81)	(18)
Comprehensive income attributable to Magna International Inc.	$ 3,050	$ 2,030

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 726	$ 974
Accounts receivable	6,878	6,165
Inventories	3,379	2,804
Prepaid expenses and other	237	220
Total current assets	11,220	10,163
Investments	2,088	1,850
Fixed assets, net	8,141	7,022
Intangible assets, net	650	621
Goodwill	2,099	1,923
Deferred tax assets	236	268
Other assets	959	719
Consolidated total assets	25,393	22,566
Current liabilities
Short-term borrowings	259	623
Accounts payable	6,299	5,430
Accrued salaries and wages	836	768
Other accrued liabilities	1,649	1,639
Income taxes payable	18	96
Long-term debt due within one year	108	139
Total current liability	9,169	8,695
Long-term debt	3,195	2,394
Long-term employee benefit liabilities	670	667
Other long-term liabilities	304	298
Deferred tax liabilities	323	293
Total liability	13,661	12,347
Shareholders' equity
Common Shares [issued: 2017 - 358,063,217; 2016 - 382,251,587]	3,617	3,796
Contributed surplus	119	105
Retained earnings	8,089	7,318
Accumulated other comprehensive loss	(597)	(1,451)
Stockholders equity attributable to Magna International Inc	11,228	9,768
Non-controlling interests	504	451
Total stockholder's equity	11,732	10,219
Total liability and stockholders' equity	$ 25,393	$ 22,566

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common stock, shares issued	358,063,217	382,251,587

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
OPERATING ACTIVITIES
Net income	$ 2,255	$ 2,074
Items not involving current cash flows	1,306	1,231
Profit loss after adjustment of non cash items	3,561	3,305
Changes in operating assets and liabilities	(232)	(39)
Cash provided from operating activities	3,329	3,266
INVESTMENT ACTIVITIES
Fixed asset additions	(1,858)	(1,807)
Purchase of subsidiaries		(1,810)
Increase in investments and other assets	(651)	(478)
Proceeds from disposition	332	138
Proceeds on disposal of facilities	49
Cash used for investment activities	(2,128)	(3,957)
FINANCING ACTIVITIES
Issues of debt	752	282
(Decrease) Increase in short-term borrowings	(530)	386
Repayments of debt	(110)	(417)
Common Shares issued on exercise of stock options	44	33
Shares repurchased for tax withholdings on vesting of equity awards	(11)	(9)
Repurchase of Common Shares	(1,271)	(904)
Contributions to subsidiaries by non-controlling interests	10
Dividends paid to non-controlling interests	(38)	(6)
Dividends paid	(400)	(385)
Cash used for financing activities	(1,554)	(1,020)
Effect of exchange rate changes on cash, cash equivalents and restricted cash equivalents	24	16
Net decrease in cash, cash equivalents and restricted cash equivalents during the year	(329)	(1,695)
Cash, cash equivalents and restricted cash equivalents, beginning of year	1,168	2,863
Cash, cash equivalents and restricted cash equivalents, end of year	$ 839	$ 1,168

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions	Total	Common Shares [Member]	Contributed Surplus [Member]	Retained Earnings [Member]	AOCL [Member]	[1]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2015	$ 9,117	$ 3,942	$ 107	$ 6,387	$ (1,470)		$ 151
Beginning Balance, shares at Dec. 31, 2015		402.3
Net income	2,074			2,031			43
Other comprehensive income (loss)	(26)				(1)		(25)
Shares issued on exercise of stock options	33	$ 47	(14)
Shares issued on exercise of stock options, shares		2.1
Release of stock and stock units		$ 25	(25)
Release of stock and stock units, shares		0.4
Shares repurchased for tax withholdings on vesting of equity awards	(9)	$ (2)		(7)
Shares repurchased for tax withholdings on vesting of equity awards, shares		(0.2)
Repurchase and cancellation under normal course issuer bids [note 19]	(904)	$ (220)		(704)	20
Repurchase and cancellation under normal course issuer bid, shares		(22.4)
Acquisitions [note 6]	288						288
Stock-based compensation expense	37		37
Dividends paid to non-controlling interests	(6)						(6)
Dividends paid	(385)	$ 4		(389)
Dividends paid, shares		0.1
Ending Balance at Dec. 31, 2016	10,219	$ 3,796	105	7,318	(1,451)		451
Ending Balance, shares at Dec. 31, 2016		382.3
Net income	2,255			2,206			49
Other comprehensive income (loss)	876				844		32
Shares issued on exercise of stock options	44	$ 56	(12)
Shares issued on exercise of stock options, shares		1.7
Release of stock and stock units		$ 22	(22)
Release of stock and stock units, shares		0.4
Shares repurchased for tax withholdings on vesting of equity awards	(11)	$ (2)		(9)
Shares repurchased for tax withholdings on vesting of equity awards, shares		(0.2)
Repurchase and cancellation under normal course issuer bids [note 19]	(1,271)	$ (262)		(1,030)	21
Repurchase and cancellation under normal course issuer bid, shares		(26.2)
Contribution by non-controlling interests	10						10
Stock-based compensation expense	48		48
Reclassification of tax effect [note 20]				11	(11)
Dividends paid to non-controlling interests	(38)						(38)
Dividends paid	(400)	$ 7		(407)
Dividends paid, shares		0.1
Ending Balance at Dec. 31, 2017	$ 11,732	$ 3,617	$ 119	$ 8,089	$ (597)		$ 504
Ending Balance, shares at Dec. 31, 2017		358.1
[1]	AOCL is Accumulated Other Comprehensive Loss.

Consolidated Statements of Cha8

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Dividends paid per share	$ 1.10	$ 1

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Significant Accounting Policies	1. SIGNIFICANT ACCOUNTING POLICIES Magna International Inc. [collectively “Magna” or the “Company”] is a global automotive supplier whose product capabilities include producing body, chassis, exterior, seating, powertrain, electronic, active driver assistance, vision, closure and roof systems and modules, as well as complete vehicle engineering and contract manufacturing. The consolidated financial statements have been prepared in U.S. dollars following accounting principles generally accepted in the United States [“GAAP”]. Principles of consolidation The Consolidated Financial Statements include the accounts of Magna and its subsidiaries in which Magna has a controlling financial interest or is the primary beneficiary. The Company presents non-controlling Financial instruments The Company classifies all of its financial assets and financial liabilities as trading, held-to-maturity available-for-sale Held-for-trading Held-to-maturity Available-for-sale Foreign currency translation The Company operates globally, which gives rise to a risk that its earnings and cash flows may be adversely impacted by fluctuations in foreign exchange rates. Assets and liabilities of the Company’s operations having a functional currency other than the U.S. dollar are translated into U.S. dollars using the exchange rate in effect at year end, and revenues and expenses are translated at the average rate during the year. Exchange gains or losses on translation of the Company’s net investment in these operations are included in comprehensive income and are deferred in accumulated other comprehensive income. Foreign exchange gains or losses on debt that was designated as a hedge of the Company’s net investment in these operations are also recorded in accumulated other comprehensive income. Foreign exchange gains and losses on transactions occurring in a currency other than an operation’s functional currency are reflected in income, except for gains and losses on foreign exchange contracts used to hedge specific future commitments in foreign currencies and on intercompany balances which are designated as long-term investments. In particular, the Company uses foreign exchange forward contracts for the sole purpose of hedging certain of the Company’s future committed foreign currency based outflows and inflows. Most of the Company’s foreign exchange contracts are subject to master netting arrangements that provide for the net settlement of contracts, by counterparty, in the event of default or termination. All derivative instruments, including foreign exchange contracts, are recorded on the consolidated balance sheet at fair value. The fair values of derivatives are recorded on a gross basis in prepaid expenses and other, other assets, other accrued liabilities or other long-term liabilities. To the extent that cash flow hedges are effective, the change in their fair value is recorded in other comprehensive income; any ineffective portion is recorded in net income. Amounts accumulated in other comprehensive income are reclassified to net income in the period in which the hedged item affects net income. If the Company’s foreign exchange forward contracts cease to be effective as hedges, for example, if projected foreign cash inflows or outflows declined significantly, gains or losses pertaining to the portion of the hedging transactions in excess of projected foreign currency denominated cash flows would be recognized in income at the time this condition was identified. Cash and cash equivalents Cash and cash equivalents include cash on account, demand deposits and short-term investments with remaining maturities of less than three months at acquisition. Inventories Production inventories and tooling inventories manufactured in-house first-in, first-out Outsourced tooling inventories are valued at the lower of subcontracted costs and market. Long-lived assets Fixed assets are recorded at historical cost. Depreciation is provided on a straight-line basis over the estimated useful lives of fixed assets at annual rates of 2 1 2 Finite-lived intangible assets, which have arisen principally through acquisitions, include customer relationship intangibles and patents and licences. These finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives which range from 4 to 15 years. The Company assesses fixed and finite-lived intangible assets for recoverability whenever indicators of impairment exist. If the carrying value of the asset exceeds the estimated undiscounted cash flows from the use of the asset, then an impairment loss is recognized to write the asset down to fair value. The fair value of fixed and finite-lived intangible assets is generally determined using estimated discounted future cash flows. Goodwill Goodwill represents the excess of the cost of an acquired enterprise over the fair value of the identifiable assets acquired and liabilities assumed less any subsequent write-downs for impairment. Goodwill is reviewed for impairment in the fourth quarter of each year, or more frequently if indicators of potential impairment exist. Goodwill impairment is assessed based on a comparison of the fair value of a reporting unit to the underlying carrying value of the reporting unit’s net assets, including goodwill. When the carrying amount of the reporting unit exceeds its fair value, an impairment is recognized based on that difference. The fair value of a reporting unit is determined using the estimated discounted future cash flows of the reporting unit. Investments in Affiliates The Company accounts for investments in companies over which it has the ability to exercise significant influence but does not hold a controlling interest, under the equity method. It records its proportionate share of income or losses in Equity income in the Consolidated Statements of Income. The Company monitors its investments in affiliates for indicators of other-than-temporary declines in value on an ongoing basis in accordance with GAAP. If the Company determines that an other-than-temporary decline in value has occurred, it recognizes an impairment loss, which is measured as the difference between the recorded book value and the fair value of the investment. Fair value is generally determined using an income approach based on discounted cash flows. Other assets Other assets include the long-term portion of certain receivables, which represent the recognized sales value of tooling and design and engineering services provided to customers under certain long-term contracts. The receivables will be paid in full upon completion of the contracts or in instalments based on forecasted production volumes. In the event that actual production volumes are less than those forecasted, a reimbursement for any shortfall will be made. Preproduction costs related to long-term supply agreements Pre-operating Costs incurred [net of customer subsidies] related to design and engineering, which are paid for as part of subsequent production piece price amounts, are expensed as incurred unless a contractual guarantee for reimbursement exists. Costs incurred [net of customer subsidies] related to design and development costs for moulds, dies and other tools that the Company does not own [and that will be used in, and paid for as part of the piece price amount for, subsequent production] are expensed as incurred unless the supply agreement provides a contractual guarantee for reimbursement or the non-cancellable Where these preproduction costs are deemed to be a single unit of account combined with a subsequent parts production, the costs deferred in the above circumstances are included in other assets and amortized on a units-of-production Warranty The Company records product warranty liabilities based on its individual customer agreements. Under most customer agreements, the Company only accounts for existing or probable claims on product default issues when amounts related to such issues are probable and reasonably estimable. Under certain powertrain and complete vehicle engineering and assembly contracts, the Company records an estimate of future warranty-related costs based on the terms of the specific customer agreements and the specific customer’s warranty experience. Product liability provisions are established based on the Company’s best estimate of the amounts necessary to settle existing claims on product default issues. Recall costs are costs incurred when government regulators and/or the customer decides to recall a product due to a known or suspected performance issue, and the Company is required to participate, either voluntarily or involuntarily. Costs typically include the cost of the product being replaced, the customer’s cost of the recall and labour to remove and replace the defective part. When a decision to recall a product has been made or is probable, the Company’s portion of the estimated cost of the recall is recorded as a charge to income in that period. In making this estimate, judgement is required as to the number of units that may be returned as a result of the recall, the total cost of the recall campaign and the ultimate negotiated sharing of the cost between the Company, the customer and, in some cases, a supplier to the Company. The Company monitors warranty activity on an ongoing basis and adjusts reserve estimates when it is probable that future warranty costs will be different than those estimates. Employee future benefit plans The cost of providing benefits through defined benefit pensions, lump sum termination and long service payment arrangements, and post-retirement benefits other than pensions is actuarially determined and recognized in income using the projected benefit method pro-rated The funded status of the plans is measured as the difference between the plan assets at fair value and the projected benefit obligation [“PBO”]. The aggregate of all overfunded plans is recorded in other assets, and the aggregate of all underfunded plans in long-term employee benefit liabilities. The portion of the amount by which the actuarial present value of benefits included in the PBO exceeds the fair value of plan assets, payable in the next twelve months, is reflected in other accrued liabilities. This is determined on a plan by plan basis. Asset retirement obligation The Company recognizes its obligation to restore leased premises at the end of the lease by recording at lease inception the estimated fair value of this obligation as other long-term liabilities with a corresponding amount recognized as fixed assets. The fixed asset amount is amortized over the period from lease inception to the time the Company expects to vacate the premises, resulting in both depreciation and interest charges. The estimated fair value of the obligation is assessed for changes in the expected timing and extent of expenditures with changes related to the time value of money recorded as interest expense. Revenue recognition Revenue from the sale of manufactured products is recognized when the price is fixed or determinable, collectability is reasonably assured and upon shipment to [or receipt by customers, depending on contractual terms], and acceptance by customers. Revenue from tooling and engineering services are accounted for as a separate revenue element only in circumstances where the tooling and engineering has value to the customer on a standalone basis. Revenues from significant engineering services and tooling contracts that qualify as separate revenue elements are recognized on a percentage-of-completion Percentage-of-completion Revenue and cost of goods sold, including amounts from engineering and tooling contracts, are presented on a gross basis in the consolidated statements of income and comprehensive income when the Company is acting as principal and is subject to significant risks and rewards in connection with the process of bringing the product to its final state and in the post-sale dealings with its customers. Otherwise, components of revenues and related costs are presented on a net basis. With respect to vehicle assembly sales, given that Magna is acting as principal with respect to purchased components and systems, the selling price to the customer includes the costs of such inputs. Government assistance The Company makes periodic applications for financial assistance under available government assistance programs in the various jurisdictions that the Company operates. Grants relating to capital expenditures are reflected as a reduction of the cost of the related assets. Grants relating to current operating expenditures are generally recorded as a reduction of the related expense at the time the eligible expenses are incurred. The Company also receives tax credits and tax super allowances, the benefits of which are recorded as a reduction of income tax expense. In addition, the Company receives loans which are recorded as liabilities in amounts equal to the cash received. When a government loan is issued to the Company at a below-market rate of interest, the loan is initially recorded at its net present value, and accreted to its face value over the period of the loan. The benefit of the below-market rate of interest is accounted for like a government grant. It is measured as the difference between the initial carrying value of the loan and the cash proceeds received. Research and development Costs incurred in connection with research and development activities, to the extent not recoverable from the Company’s customers, are charged to expense as incurred. For the years ended December 31, 2017 and 2016, research and development costs charged to expense were approximately $522 million and $460 million, respectively. Income taxes The Company uses the liability method of tax allocation to account for income taxes. Under the liability method of tax allocation, deferred tax assets and liabilities are determined based on differences between the financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. No deferred tax liability is recorded for taxes on undistributed earnings and translation adjustments of foreign subsidiaries if these items are either considered to be reinvested for the foreseeable future or if they are available for repatriation and are not subject to further tax on remittance. Taxes are recorded on such foreign undistributed earnings and translation adjustments when it becomes apparent that such earnings will be distributed in the foreseeable future and the Company will incur further significant tax on remittance. Recognition of uncertain tax positions is dependent on whether it is more-likely-than-not more-likely-than-not Comprehensive income Other comprehensive income includes unrealized gains and losses on translation of the Company’s foreign operations that use the local currency as the functional currency, net of taxes, the change in fair value of available-for-sale Accumulated other comprehensive income is a separate component of shareholders’ equity which includes the accumulated balances of all components of other comprehensive income which are recognized in comprehensive income but excluded from net income. Earnings per Common Share Basic earnings per Common Share are calculated on net income attributable to Magna International Inc. using the weighted average number of Common Shares outstanding during the year. Diluted earnings per Common Share are calculated on the weighted average number of Common Shares outstanding, including an adjustment for stock options outstanding using the treasury stock method. Common Shares that have not been released under the Company’s restricted stock plan or are being held in trust for purposes of the Company’s restricted stock unit program have been excluded from the calculation of basic earnings per share but have been included in the calculation of diluted earnings per share. Use of estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Accounting Standards

Accounting Standards	12 Months Ended
	Dec. 31, 2017
Accounting Changes and Error Corrections [Abstract]
Accounting Standards	2. ACCOUNTING STANDARDS Accounting Changes Statement of Cash Flows In November 2016, the Financial Accounting Standards Board [“FASB”] issued Accounting Standards Update [“ASU”] 2016-18, 2016-18 2016-18 The impact of adopting this new standard on the consolidated statement of cash flows was as follows: 2016 Increase in changes in operating assets and liabilities $ (120 ) Decrease in cash provided from operating activities $ (120 ) Reduction in purchase of subsidiaries $ 120 Reclassification of restricted cash deposits $ 194 Reduction in cash used for investing activities $ 314 Reduction in net decrease in cash, cash equivalents and restricted cash equivalents, during the period $ 194 Increase in cash, cash equivalents and restricted cash equivalents, end of period $ 194 Goodwill In January 2017, the FASB issued new guidance, ASU No. 2017-4, No. 2017-4 Reclassification of Tax Effects from AOCI In February 2018, the FASB issued ASU No. 2018-02, 2018-02”] 2018-02 2018-02, 2018-02 Future Accounting Standards Revenue Recognition In May 2014, the FASB issued ASU No. 2014-09, In the third quarter of 2017, after careful consideration of all issued guidance and related interpretations, in addition to the Company’s specific facts and circumstances, it was determined that tooling and pre-production pre-production As a result of the change in accounting for tooling and pre-production Financial Instruments In January 2016, the FASB issued ASU No. 2016-01, 825-10): 2016-01 2016-01 Leases In February 2016, the FASB issued ASU No. 2016-02, 2016-02)”, right-of-use 2016-02 2016-02 Income Taxes In October 2016, the FASB issued ASU No. 2016-16, Pensions In March 2017, the FASB issued ASU 2017-07, 2017-07)” 2017-07 Derivatives and Hedging In August 2017, the FASB issued ASU No. 2017-12, 2017-12)” 2017-12

Other Expense, Net

Other Expense, Net	12 Months Ended
	Dec. 31, 2017
Other Income and Expenses [Abstract]
Other Expense, Net	3. OTHER EXPENSE, NET Other expense, net consists of significant items such as: restructuring charges generally related to significant plant closures or consolidations; impairment charges; gains or losses on disposal of facilities; re-measurement on-going 2017 2016 North America [a] Restructuring charges $ 15 $ — Pension settlement — 13 15 13 Europe [b] Impairment of long-lived assets 64 — Impairment of investment 17 — Restructuring charges 14 17 95 17 Asia [c] Gain on formation of a new venture (45 ) — Corporate and Other [d] Gain on sale of investment (26 ) — $ 39 $ 30 [a] North America For the year ended December 31, 2017 During 2017, the Company recorded net restructuring charges of $15 million [$11 million after tax] in North America for one of its body and chassis systems operations. For the year ended December 31, 2016 During 2016, the Company offered a limited lump-sum non-cash [b] Europe For the year ended December 31, 2017 During 2017, the Company recorded fixed asset impairment charges of $64 million [$64 million after tax] in Europe related to its body and chassis systems facilities. During 2017, the Company recorded an impairment charge of $17 million [$17 million after tax] on one of its European investments, which was accounted for under the equity method. During 2017, the Company recorded net restructuring charges of $14 million [$14 million after tax] in Germany at a powertrain systems facility. For the year ended December 31, 2016 During 2016, the Company recorded net restructuring charges of $17 million [$17 million after tax] in Germany at a powertrain systems facility. [c] Asia For the year ended December 31, 2017 During 2017, the Company formed a new venture in China with Hubei Aviation Precision Machinery Co., Ltd. The transaction resulted in a gain of $45 million [$34 million after tax] [note 8] [d] Corporate and Other For the year ended December 31, 2017 During 2017, the Company’s investment in Argus Cyber Security Ltd. was sold for proceeds of $33 million. A gain of $26 million [$26 million after tax] was recognized on the sale of the investment, which was accounted for under the cost method.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	4. EARNINGS PER SHARE Earnings per share are computed as follows: 2017 2016 Basic earnings per Common Share: Net income attributable to Magna International Inc. $ 2,206 $ 2,031 Weighted average number of Common Shares outstanding during the year 371.8 391.0 Basic earnings per Common Share $ 5.93 $ 5.19 Diluted earnings per Common Share: Net income attributable to Magna International Inc. $ 2,206 $ 2,031 Weighted average number of Common Shares outstanding during the year 371.8 391.0 Adjustments Stock options and restricted stock [a] 2.1 2.2 373.9 393.2 Diluted earnings per Common Share $ 5.90 $ 5.16 [a] Diluted earnings per Common Share exclude 1.2 million [2016 – 3.4 million] Common Shares issuable under the Company’s Incentive Stock Option Plan because these options were not “in-the-money”. two-class

Details of Cash From Operating

Details of Cash From Operating Activities	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Details of Cash From Operating Activities	5. DETAILS OF CASH FROM OPERATING ACTIVITIES [a] Cash, cash equivalents and restricted cash equivalents consist of: 2017 2016 Bank term deposits and bankers’ acceptances $ 234 $ 498 Cash 492 476 Cash and cash equivalents $ 726 $ 974 Restricted cash equivalents included in prepaid expenses [note 16] 113 194 $ 839 $ 1,168 [b] Items not involving current cash flows: 2017 2016 Depreciation and amortization $ 1,173 $ 1,056 Amortization of other assets included in cost of goods sold 134 135 Impairment charges [note 3] 81 — Other non-cash (2 ) 27 Deferred income taxes [note 11] (3 ) 22 Equity income in excess of dividends received (6 ) (9 ) Non-cash (71 ) — $ 1,306 $ 1,231 [c] Changes in operating assets and liabilities: 2017 2016 Accounts receivable $ (297 ) $ (446 ) Inventories (362 ) (159 ) Prepaid expenses and other 25 69 Accounts payable 494 562 Accrued salaries and wages 7 94 Other accrued liabilities (46 ) (145 ) Income taxes payable (53 ) (14 ) $ (232 ) $ (39 )

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Acquisitions	6. ACQUISITIONS Acquisitions in the year ended December 31, 2016 On January 4, 2016, the Company completed the acquisition of 100% of the common shares and voting interests of the Getrag Group of Companies [“Getrag”]. Getrag is a global supplier of automotive transmission systems, including manual, automated-manual, dual clutch, hybrid and other advanced systems. The purchase price was approximately $1.9 billion [net of $136 million cash acquired]. The acquired business has sales primarily to BMW, Audi, Jiangling Motors, Ford, Volvo and Dongfeng. The acquisition of Getrag was accounted for as a business combination. The following table summarizes the amounts recognized for assets acquired and liabilities assumed: Final allocation Cash $ 136 Non-cash (395 ) Investments 1,497 Fixed assets 445 Goodwill 590 Other assets 24 Intangibles 372 Deferred tax assets 34 Long-term employee benefit liabilities (137 ) Long-term debt (117 ) Other long-term liabilities (52 ) Deferred tax liabilities (119 ) Non-controlling (287 ) Consideration paid 1,991 Less: Cash acquired (136 ) Net cash outflow $ 1,855 The investments amount includes the following equity investments that were acquired as part of the business combination: Ownership Investment percentage balance Getrag Ford Transmission GmbH 50.0 % $ 340 Getrag (Jiangxi) Transmission Co., Ltd [“GJT”] 66.7 % $ 1,077 Dongfeng Getrag Transmission Co. Ltd 50.0 % $ 80 The Company accounts for the investments under the equity method since it has the ability to exercise significant influence but does not hold a controlling financial interest. Recognized goodwill is attributable to the assembled workforce, expected synergies and other intangible assets that do not qualify for separate recognition. All of the goodwill recognized was assigned to the Company’s European segment. Intangible assets consist primarily of amounts recognized for the fair value of customer relationship intangibles and patents. These amortizable intangible assets are being amortized on a straight-line basis over a 15 year estimated useful life. Sales and net income for the acquired Getrag entities for the year ended December 31, 2016 were $2.0 billion and $45 million, respectively. Other During the fourth quarter of 2016, the Company acquired 100% of the equity interest in the BÖCO Group of Companies [“BÖCO”]. BÖCO is an automotive supplier of latches, hinges and strikers, with sales primarily to the BMW Group, Daimler and Audi. During the second quarter of 2016, the Company acquired 100% of the equity interest in Telemotive AG, an engineering service provider in the field of automotive electronics. The acquired business has sales primarily to BMW, Volkswagen and Daimler. These entities have been included in our consolidated results of operations since their respective acquisition dates. The effects of these acquisitions, individually and in aggregate, were not material to the Company’s consolidated results of operations.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventories	7. INVENTORIES Inventories consist of: 2017 2016 Raw materials and supplies $ 1,254 $ 1,007 Work-in-process 331 264 Finished goods 433 327 Tooling and engineering 1,361 1,206 $ 3,379 $ 2,804 Tooling and engineering inventory represents costs incurred on tooling and engineering services contracts in excess of billed and unbilled amounts included in accounts receivable.

Investments in Affiliated Compa

Investments in Affiliated Companies	12 Months Ended
	Dec. 31, 2017
Investments in and Advances to Affiliates [Abstract]
Investments in Affiliated Companies	8. INVESTMENTS IN AFFILIATED COMPANIES During the fourth quarter of 2017, the Company formed a new venture in China with Hubei Aviation Precision Machinery Co., Ltd. [“HAPM”]. HAPM is a Chinese automotive seat mechanism and structure component supplier. Under the terms of the arrangement, HAPM transferred several of its China manufacturing operations to the new venture and has a 50.1% controlling interest. The Company contributed one of its China manufacturing operations and received net proceeds of $54 million for a 49.9%, non-controlling The Company uses the equity method of accounting for its investments in entities over which it does not have control, but is able to exercise significant influence over operating and financial policies. The ownership percentages and carrying value of the Company’s principal equity method investments at December 31 were as follows [in millions, except percentages]: 2017 2016 Litens Automotive Partnership [“Litens”] [i] 76.7 % $ 221 $ 173 Getrag (Jiangxi) Transmission Co., Ltd 66.7 % $ 1,161 $ 1,015 Getrag Ford Transmission GmbH 50.0 % $ 334 $ 325 Dongfeng Getrag Transmission Co. Ltd [“DGT”] [ii] 50.0 % $ 84 $ 79 HAPM 49.9 % $ 116 $ — [i] Litens – The Company accounts for its investment in Litens under the equity method of accounting as a result of significant participating rights that prevent control. [ii] DGT – DGT is a variable interest entity [“VIE”] and depends on the Company and the Dongfeng Motor Group Company for any additional cash needs. The Company cannot make key operating decisions considered to be most significant to the VIE, and is therefore not considered to be the primary beneficiary. Our known maximum exposure to loss approximated the carrying value of our investment balance as at December 31, 2017. A summary of the total financial results, as reported by the Company’s equity method investees, in the aggregate, at December 31 was as follows: Summarized Balance Sheets 2017 2016 Current assets $ 2,041 $ 2,478 Non-current $ 4,159 $ 4,450 Current liabilities $ 1,516 $ 2,329 Long-term liabilities $ 1,378 $ 1,268 Summarized Income Statements 2017 2016 Sales $ 5,425 $ 5,009 Cost of goods sold, expenses and income taxes 5,099 4,668 Net income $ 326 $ 341 An impairment charge of $17 million was recorded for the year ended December 31, 2017. No impairment charges were recorded for the year ended December 31, 2016. Sales to equity method investees were approximately $284 million and $214 million for the years ended December 31, 2017 and 2016, respectively. Variable Interest Entities The Company has two equity method investees that are variable interest entities, in which the Company is the primary beneficiary and has the power to direct the activities that are considered most significant to the entities. As a result, the assets, liabilities, and results of operations of these variable interest entities are included in the Company’s Consolidated Financial Statements. The Company’s maximum exposure to any potential losses associated with these affiliated companies is limited to its investment, and was $139 million and $187 million at December 31, 2017 and 2016, respectively. The carrying amounts and classification of assets and liabilities included in the Company’s consolidated balance sheet related to the consolidated VIEs are as follows: 2017 2016 Current assets $ 260 $ 256 Non-current assets 134 221 Total assets $ 394 $ 477 Current liabilities $ 251 $ 288 Non-current liabilities 4 2 Total liabilities $ 255 $ 290 Assets recognized as a result of consolidating these VIEs do not represent additional assets that could be used to satisfy claims against the Company’s general assets. Conversely, liabilities recognized as a result of consolidating these VIEs do not represent additional claims on the Company’s general assets; rather, they represent claims against the specific assets of the consolidated VIEs.

Fixed Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Fixed Assets	9. FIXED ASSETS Fixed assets consist of: 2017 2016 Cost Land $ 269 $ 254 Buildings 2,232 1,942 Machinery and equipment 14,273 12,349 16,774 14,545 Accumulated depreciation Buildings (778 ) (652 ) Machinery and equipment (7,855 ) (6,871 ) $ 8,141 $ 7,022 Included in the cost of fixed assets are construction in progress expenditures of $1.4 billion [2016 - $1.0 billion]

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	10. GOODWILL The following is a continuity of the Company’s goodwill by segment: North Europe Asia Total Balance, December 31, 2015 $ 590 $ 525 $ 229 $ 1,344 Acquisitions [note 6] — 620 (5 ) 615 Foreign exchange and other 5 (29 ) (12 ) (36 ) Balance, December 31, 2016 595 1,116 212 1,923 Acquisitions — 1 — 1 Foreign exchange and other 17 147 11 175 Balance, December 31, 2017 $ 612 $ 1,264 $ 223 $ 2,099

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	11. INCOME TAXES [a] The provision for income taxes differs from the expense that would be obtained by applying the Canadian statutory income tax rate as a result of the following: 2017 2016 Canadian statutory income tax rate 26.5 % 26.5 % Manufacturing and processing profits deduction (0.3 ) (0.3 ) Foreign rate differentials (0.4 ) (0.2 ) Losses not benefited 1.6 0.8 Utilization of losses previously not benefited (0.1 ) (0.2 ) Earnings of equity accounted investees (1.4 ) (1.2 ) Tax on repatriation of foreign earnings 1.4 0.7 Valuation allowance on deferred tax assets [i] (0.1 ) (0.4 ) US tax reform [ii] (0.8 ) — Research and development tax credits (1.2 ) (1.5 ) Reserve for uncertain tax positions (0.2 ) 0.2 Non-deductible 0.3 1.3 Others (0.5 ) (0.3 ) Effective income tax rate 24.8 % 25.4 % [i] GAAP requires that the Company assess whether valuation allowances should be established or maintained against its deferred tax assets, based on consideration of all available evidence, using a “more-likely-than-not” standard. The factors the Company uses to assess the likelihood of realization are its history of losses, forecasts of future pre-tax [ii] On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act [the “US Tax Reform”], which reduces the US federal corporate tax rate from 35% to 21% beginning in 2018, requires companies to pay a one-time Deferred tax assets and liabilities: The Company re-measured One-time Global Intangible Low-Taxed [iii] Non-deductible re-measurement [b] The details of income before income taxes by jurisdiction are as follows: 2017 2016 Canadian $ 592 $ 617 Foreign 2,407 2,163 $ 2,999 $ 2,780 [c] The details of the income tax provision are as follows: 2017 2016 Current Canadian $ 140 $ 127 Foreign 607 559 747 686 Deferred Canadian (7 ) 16 Foreign 4 4 (3 ) 20 $ 744 $ 706 [d] Deferred income taxes have been provided on temporary differences, which consist of the following: 2017 2016 Tax depreciation in excess of book depreciation $ 62 $ 58 Tax amortization in excess of book amortization 10 2 Liabilities currently (not deductible) deductible for tax (7 ) 5 Net tax losses benefited (18 ) (31 ) Change in valuation allowance on deferred tax assets (2 ) (12 ) Tax on undistributed foreign earnings 9 8 US tax reform (61 ) — Others 4 (10 ) $ (3 ) $ 20 [e] Deferred tax assets and liabilities consist of the following temporary differences: 2017 2016 Assets Tax benefit of loss carryforwards $ 747 $ 715 Liabilities currently not deductible for tax 171 188 Tax credit carryforwards 59 22 Unrealized loss on cash flow hedges and retirement liabilities 75 134 Others 21 21 1,073 1,080 Valuation allowance against tax benefit of loss carryforwards (629 ) (615 ) Other valuation allowance (129 ) (66 ) 315 399 Liabilities Tax depreciation in excess of book depreciation 212 266 Other assets book value in excess of tax values 60 57 Tax on undistributed foreign earnings 106 98 Unrealized gain on cash flow hedges and retirement liabilities 24 3 402 424 Net deferred tax liabilities $ (87 ) $ (25 ) The net deferred tax liabilities are presented on the consolidated balance sheet in the following categories: 2017 2016 Long-term deferred tax assets $ 236 $ 268 Long-term deferred tax liabilities (323 ) (293 ) $ (87 ) $ (25 ) [f] The Company has provided for deferred income taxes for the estimated tax cost of distributable earnings of its subsidiaries. Deferred income taxes have not been provided on approximately $5.07 billion of undistributed earnings of certain foreign subsidiaries, as the Company has concluded that such earnings should not give rise to additional tax liabilities upon repatriation or are indefinitely reinvested. A determination of the amount of the unrecognized tax liability relating to the remittance of such undistributed earnings is not practicable. [g] Income taxes paid in cash [net of refunds] were $782 million for the year ended December 31, 2017 [2016 - $707 million]. [h] As of December 31, 2017, the Company had domestic and foreign operating loss carryforwards of $2.60 billion and tax credit carryforwards of $59 million. Approximately $1.87 billion of the operating losses can be carried forward indefinitely. The remaining operating losses and tax credit carryforwards expire between 2018 and 2037. [i] As at December 31, 2017 and 2016, the Company’s gross unrecognized tax benefits were $243 and $220 million, respectively [excluding interest and penalties], of which $222 and $201 million, respectively, if recognized, would affect the Company’s effective tax rate. The gross unrecognized tax benefits differ from the amount that would affect the Company’s effective tax rate due primarily to the impact of the valuation allowance on deferred tax assets. A summary of the changes in gross unrecognized tax benefits is as follows: 2017 2016 Balance, beginning of year $ 220 $ 221 Increase based on tax positions related to current year 21 21 Increase (decrease) based on tax positions of prior years 7 (52 ) Increase related to acquisitions — 44 Settlements (2 ) (2 ) Statute expirations (17 ) (8 ) Foreign currency translation 14 (4 ) $ 243 $ 220 The Company recognizes interest and penalties with respect to unrecognized tax benefits as income tax expense. As at December 31, 2017 and 2016, the Company had recorded interest and penalties on the unrecognized tax benefits of $45 and $35 million, respectively, which reflects expenses related to changes in its reserves for interest and penalties of $10 and $14 million, respectively. The Company operates in multiple jurisdictions throughout the world, and its tax returns are periodically audited or subject to review by both domestic and foreign tax authorities. During the next twelve months, it is reasonably possible that, as a result of audit settlements, the conclusion of current examinations and the expiration of the statute of limitations in several jurisdictions, the Company may decrease the amount of its gross unrecognized tax benefits [including interest and penalties] by approximately $88 million, of which $77 million, if recognized, would affect its effective tax rate. The Company considers its significant tax jurisdictions to include Canada, the United States, Austria, Germany and Mexico. With few exceptions, the Company remains subject to income tax examination in Germany for years after 2007, Mexico for years after 2011, in Austria and in Canada for years after 2012, and in the U.S. federal jurisdiction for years after 2013.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	12. INTANGIBLE ASSETS Intangible assets were as follows: Estimated weighted 2017 2016 Cost Customer relationship intangibles [note 6] 10 $ 438 $ 392 Computer software 3 348 316 Patent and licenses 13 342 278 1,128 986 Accumulated depreciation Customer relationship intangibles [note 6] (162 ) (96 ) Computer software (263 ) (242 ) Patent and licenses (53 ) (27 ) $ 650 $ 621 The Company recorded approximately $125 million and $100 million of amortization expense related to finite-lived intangible assets for the years ended December 31, 2017 and 2016, respectively. The Company currently estimates annual amortization expense to be $124 million for 2018, $91 million for 2019, $72 million for 2020, $62 million for 2021 and $59 million for 2022.

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	13. OTHER ASSETS Other assets consist of: 2017 2016 Preproduction costs related to long-term supply agreements with contractual guarantee for reimbursement $ 689 $ 420 Long-term receivables [note 21[c]] 180 229 Pension overfunded status [note 17[a]] 23 21 Unrealized gain on cash flow hedges [note 21] 46 6 Other, net 21 43 $ 959 $ 719

Employee Equity and Profit Part

Employee Equity and Profit Participation Program	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Employee Equity and Profit Participation Program	14. EMPLOYEE EQUITY AND PROFIT PARTICIPATION PROGRAM During the year ended December 31, 2017, a trust, which exists to make orderly purchases of the Company’s shares for employees for transfer to the Employee Equity and Profit Participation Program [“EEPPP”], borrowed up to $19 million [2016 - $10 million] from the Company to facilitate the purchase of Common Shares. At December 31, 2017, the trust’s indebtedness to Magna was $19 million [2016 - $10 million]. The Company nets the receivable from the trust with the Company’s accrued EEPPP payable in accrued wages and salaries.

Warranty

Warranty	12 Months Ended
	Dec. 31, 2017
Guarantees and Product Warranties [Abstract]
Warranty	15. WARRANTY The following is a continuity of the Company’s warranty accruals: 2017 2016 Balance, beginning of year $ 270 $ 59 Expense, net 51 101 Settlements (81 ) (59 ) Acquisitions [i] — 174 Foreign exchange and other 15 (5 ) $ 255 $ 270 [i] $127 million of the acquisition balance relates to a pre-acquisition [note 6]

Debt

Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Debt	16. DEBT Short-term borrowings The Company’s short-term borrowings consist of the following: 2017 2016 Bank indebtedness [i] $ 9 $ 8 Commercial paper [ii] 250 615 $ 259 $ 623 [i] The Company has an agreement for a credit facility that is drawn in euros. The Company is required to secure any amounts drawn on the facility with a USD cash deposit of 105% of the outstanding euro balance. As at December 31, 2017, the gross amount outstanding under the credit facility was $108 million [€90 million]. The credit agreement includes a netting arrangement with the bank that provides for the legal right of setoff. Accordingly, as at December 31, 2017, this liability balance was offset against the related restricted cash equivalent deposit of $113 million. The remaining net deposit of $5 million was included in the prepaid expenses and other balance, and is restricted under the terms of the loan. As at December 31, 2016, the gross amount outstanding under the credit facility was $185 million [€175 million], and the net deposit included in the prepaid expenses and other balance was $9 million. [ii] During 2016, the Company established a U.S. commercial paper program [the “U.S. Program”] and a euro-commercial paper program [the “euro-Program”]. Under the U.S. Program, the Company may issue U.S. commercial paper notes [the “U.S. notes”] up to a maximum aggregate amount of U.S. $500 million. The U.S. Program is supported by the Company’s existing global credit facility. The proceeds from the issuance of the U.S. notes are being used for general corporate purposes. As at December 31, 2017, $70 million [2016 - $295 million] of U.S. notes were outstanding, with a weighted-average interest rate of 1.84% [2016 – 1.04%], and maturities less than three months. Under the euro-Program, the Company may issue euro-commercial paper notes [the “euro notes”] up to a maximum aggregate amount of €500 million or its equivalent in alternative currencies. The euro notes issued are guaranteed by the Company’s existing global credit facility. The proceeds from the issuance of the euro notes are being used for general corporate purposes. As of December 31, 2017, $180 million or €150 million [2016 – $320 million or €304 million] of euro notes were outstanding, with a negative weighted-average interest rate of 0.22% [2016 – 0.07%], and maturities less than three months. Long-term borrowings [a] The Company’s long-term debt, which is substantially uncollateralized, consists of the following: 2017 2016 Senior Notes [note 16 [d]] $750 million Senior Notes due 2024 at 3.625% $ 746 $ 746 $650 million Senior Notes due 2025 at 4.150% 643 643 €550 million Senior Notes due 2023 at 1.900% 657 576 €600 million Senior Notes due 2027 at 1.500% [c] 717 — Cdn$425 million Senior Notes due 2022 at 3.100% 338 315 Bank term debt at a weighted average interest rate of approximately 5.68% [2016 – 7.3%], denominated primarily in Chinese renminbi, Indian rupee, euro and Brazilian real 99 117 Government loans at a weighted average interest rate of approximately 1.73% [2016 – 2.53%], denominated primarily in euro, Canadian dollar and Brazilian real 84 92 Other 19 44 3,303 2,533 Less due within one year 108 139 $ 3,195 $ 2,394 [b] Future principal repayments on long-term debt are estimated to be as follows: 2018 $ 108 2019 32 2020 28 2021 25 2022 342 Thereafter 2,768 $3,303 [c] On September 25, 2017, the Company issued €600 million of 1.500% fixed-rate Senior Notes which mature on September 25, 2027. Interest is payable on September 25 th [d] All of the Senior Notes pay a fixed rate of interest semi-annually except for the €550 million and €600 million Senior Notes which pay a fixed rate of interest annually. The Senior Notes are unsecured obligations and do not include any financial covenants. The Company may redeem the Senior Notes in whole or in part at any time, at specified redemption prices determined in accordance with the terms of each of the respective indentures governing the Senior Notes. All of the Senior Notes were issued for general corporate purposes. [e] The Company’s $2.75 billion revolving credit facility matures on June 22, 2022. The facility includes a $200 million Asian tranche, a $100 million Mexican tranche and a tranche for Canada, U.S. and Europe, which is fully transferable between jurisdictions and can be drawn in U.S. dollars, Canadian dollars or euros. [f] Interest expense, net includes: 2017 2016 Interest expense Current $ 10 $ 22 Long-term 80 78 90 100 Interest income (20 ) (12 ) Interest expense, net $ 70 $ 88 [g] Interest paid in cash was $88 million [h] At December 31, 2017, the Company had commitments under operating leases requiring annual rental payments as follows: Total 2018 $ 316 2019 272 2020 239 2021 212 2022 189 Thereafter 769 $ 1,997 For the year ended December 31, 2017, operating lease expense was $344 million [2016 - $314 million].

Long-Term Employee Benefit Liab

Long-Term Employee Benefit Liabilities	12 Months Ended
	Dec. 31, 2017
Postemployment Benefits [Abstract]
Long-Term Employee Benefit Liabilities	17. LONG-TERM EMPLOYEE BENEFIT LIABILITIES Long-term employee benefit liabilities consist of: 2017 2016 Defined benefit pension plans and other [a] $ 264 $ 313 Termination and long service arrangements [b] 368 319 Retirement medical benefits plans [c] 31 29 Other long-term employee benefits 7 6 Long-term employee benefit obligations $ 670 $ 667 [a] Defined benefit pension plans The Company sponsors a number of defined benefit pension plans and similar arrangements for its employees. All pension plans are funded to at least the minimum legal funding requirements, while European defined benefit pension plans are unfunded. The weighted average significant actuarial assumptions adopted in measuring the Company’s obligations and costs are as follows: 2017 2016 Projected benefit obligation Discount rate 2.9 % 3.1 % Rate of compensation increase 2.6 % 2.3 % Net periodic benefit cost Discount rate 3.1 % 3.2 % Rate of compensation increase 2.5 % 2.4 % Expected return on plan assets 5.8 % 5.8 % Information about the Company’s defined benefit pension plans is as follows: 2017 2016 Projected benefit obligation Beginning of year $ 624 $ 493 Current service cost 13 14 Interest cost 18 21 Actuarial losses and changes in actuarial assumptions 8 28 Benefits paid (23 ) (22 ) Benefits paid – settlements [ii] — (32 ) Acquisition — 129 Gain on settlement — (5 ) Foreign exchange 47 (2 ) End of year 687 624 Plan assets at fair value [iii] Beginning of year 330 326 Return on plan assets 33 22 Employer contributions [i] 82 19 Benefits paid (18 ) (17 ) Benefits paid – settlements [ii] — (32 ) Acquisition — 8 Foreign exchange 16 4 End of year 443 330 Ending funded status $ 244 $ 294 Amounts recorded in the consolidated balance sheet Non-current [note 13] $ (23 ) $ (21 ) Current liability 3 2 Non-current 264 313 Net amount $ 244 $ 294 Amounts recorded in accumulated other comprehensive income $ (135 ) $ (144 ) Net periodic benefit cost Current service cost $ 13 $ 14 Interest cost 18 21 Return on plan assets (20 ) (20 ) Benefits paid – settlements [ii] — 13 Actuarial losses 4 3 Net periodic benefit cost $ 15 $ 31 [i] During the fourth quarter of 2017, the Company contributed $60 million to fund the Company’s U.S. defined benefit pension plans. [ii] During the fourth quarter of 2016, the Company offered a limited lump-sum lump-sum lump-sum non-cash [note 3] [iii] The asset allocation of the Company’s defined benefit pension plans at December 31, 2017 and the target allocation for 2018 is as follows: 2018 2017 Equity securities 55-75 % 50 % Fixed income securities 25-45 % 35 % Cash and cash equivalents 0-15 % 15 % 100 % 100 % Substantially all of the plan assets’ fair value has been determined using significant observable inputs [level 2] from indirect market prices on regulated financial exchanges. The expected rate of return on plan assets was determined by considering the Company’s current investment mix, the historic performance of these investment categories and expected future performance of these investment categories. [b] Termination and long service arrangements Pursuant to labour laws and national labour agreements in certain European countries and Mexico, the Company is obligated to provide lump sum termination payments to employees on retirement or involuntary termination, and long service payments contingent upon persons reaching a predefined number of years of service. The weighted average significant actuarial assumptions adopted in measuring the Company’s projected termination and long service benefit obligations and net periodic benefit cost are as follows: 2017 2016 Discount rate 2.6 % 2.9 % Rate of compensation increase 2.6 % 2.7 % Information about the Company’s termination and long service arrangements is as follows: 2017 2016 Projected benefit obligation Beginning of year $ 327 $ 295 Current service cost 20 20 Interest cost 7 8 Actuarial (gains) losses and changes in actuarial assumptions (7 ) 15 Benefits paid (11 ) (11 ) Acquisition — 16 Foreign exchange 42 (16 ) Ending funded status $ 378 $ 327 Amounts recorded in the consolidated balance sheet Current liability $ 10 $ 8 Non-current 368 319 Net amount $ 378 $ 327 Amounts recorded in accumulated other comprehensive income Unrecognized actuarial losses $ (73 ) $ (84 ) Net periodic benefit cost Current service cost $ 20 $ 20 Interest cost 7 8 Actuarial losses 3 1 Net periodic benefit cost $ 30 $ 29 [c] Retirement medical benefits plans The Company sponsors a number of retirement medical plans which were assumed on certain acquisitions in prior years. These plans are frozen to new employees and incur no current service costs. In addition, the Company sponsors a retirement medical benefits plan that was amended during 2009 such that substantially all employees retiring on or after August 1, 2009 no longer participate in the plan. The weighted average discount rates used in measuring the Company’s projected retirement medical benefit obligations and net periodic benefit cost are as follows: 2017 2016 Retirement medical benefit obligations 3.4 % 3.8 % Net periodic benefit cost 3.8 % 3.9 % Health care cost inflation 6.6 % 7.0 % Information about the Company’s retirement medical benefits plans are as follows: 2017 2016 Projected benefit obligation Beginning of year $ 31 $ 32 Interest cost 1 1 Actuarial losses (gains) and changes in actuarial assumptions 2 (1 ) Benefits paid (2 ) (1 ) Foreign exchange 1 — Ending funded status $ 33 $ 31 Amounts recorded in the consolidated balance sheet Current liability $ 2 $ 2 Non-current 31 29 Net amount $ 33 $ 31 Amounts recorded in accumulated other comprehensive income Unrecognized past service costs $ 1 $ 1 Unrecognized actuarial gains 8 11 Total accumulated other comprehensive income $ 9 $ 12 Net periodic benefit cost Interest cost $ 1 $ 1 Actuarial gains (1 ) (1 ) Net periodic benefit cost $ — $ — The effect of a one-percentage [d] Future benefit payments Defined Termination Retirement Total Expected employer contributions - 2018 $ 19 $ 10 $ 2 $ 31 Expected benefit payments: 2018 $ 23 $ 10 $ 2 $ 35 2019 23 11 2 36 2020 24 14 2 40 2021 25 15 2 42 2022 26 18 2 46 Thereafter 143 99 9 251 $ 264 $ 167 $ 19 $ 450

Other Long-Term Liabilities

Other Long-Term Liabilities	12 Months Ended
	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	18. OTHER LONG-TERM LIABILITIES Other long-term liabilities consist of: 2017 2016 Long-term portion of fair value of hedges [note 21] $ 17 $ 61 Long-term portion of income taxes payable 225 181 Asset retirement obligation 34 28 Long-term lease inducements 15 16 Deferred revenue 13 12 $ 304 $ 298

Capital Stock

Capital Stock	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Capital Stock	19. CAPITAL STOCK [a] At December 31, 2017, the Company’s authorized, issued and outstanding capital stock are as follows: Preference shares - issuable in series - The Company’s authorized capital stock includes 99,760,000 preference shares, issuable in series. None of these shares are currently issued or outstanding. Common Shares - Common Shares without par value [unlimited amount authorized] have the following attributes: [i] Each share is entitled to one vote per share at all meetings of shareholders. [ii] Each share shall participate equally as to dividends. [b] On November 13, 2017, the Toronto Stock Exchange [“TSX”] accepted the Company’s Notice of Intention to Make a Normal Course Issuer Bid relating to the purchase for cancellation, as well as purchases to fund the Company’s stock-based compensation awards or programs and/or the Company’s obligations to its deferred profit sharing plans, of up to 35.8 million Magna Common Shares [the “2017 Bid”], representing approximately 10% of the Company’s public float of Common Shares. The Bid commenced on November 15, 2017 and will terminate no later than November 14, 2018. Previously, the Company had Normal Course Issuer Bids in place for the 12 month periods beginning in November 2016 and 2015. The following is a summary of the Normal Course Issuer Bids [number of shares in the table below are expressed in whole numbers]: Maximum 2017 2016 number Shares Cash Shares Cash of shares purchased amount purchased amount 2015 Bid 40,000,000 — $ — 20,313,194 $ 818 2016 Bid 38,000,000 23,245,377 1,109 2,021,824 86 2017 Bid 35,800,000 3,011,666 162 — — 26,257,043 $ 1,271 22,335,018 $ 904 Certain purchases were made by way of private agreements entered into with arm’s length, third party sellers. Such private agreement purchases were made at a discount to the prevailing market price for the Company’s Common Shares and pursuant to issuer bid exemption orders issued by the Ontario Securities Commission. All other purchases of Common Shares are made at the market price at the time of purchase in accordance with the rules and policies of the TSX. Purchases may also be made on the New York Stock Exchange in compliance with Rule 10b-18 [c] The following table presents the maximum number of shares that would be outstanding if all the dilutive instruments outstanding at March 6, 2018 were exercised or converted: Common Shares 358,395,997 Stock options (i) 7,661,769 366,057,766 (i) Options to purchase Common Shares are exercisable by the holder in accordance with the vesting provisions and upon payment of the exercise price as may be determined from time to time pursuant to the Company’s stock option plans.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Accumulated Other Comprehensive Loss	20. ACCUMULATED OTHER COMPREHENSIVE LOSS The following is a continuity schedule of accumulated other comprehensive loss: 2017 2016 Accumulated net unrealized loss on translation of net investment in foreign operations Balance, beginning of year $ (1,131 ) $ (1,042 ) Net unrealized gain (loss) 657 (109 ) Repurchase of shares under normal course issuer bids [note 19] 21 20 Balance, end of year (453 ) (1,131 ) Accumulated net unrealized gain (loss) on cash flow hedges [b] Balance, beginning of year (135 ) (262 ) Net unrealized gain 114 1 Reclassification of net loss to net income [a] 60 126 Balance, end of year 39 (135 ) Accumulated net unrealized loss on other long-term liabilities [b] Balance, beginning of year (185 ) (165 ) Net unrealized gain (loss) 8 (29 ) Reclassification of net loss to net income [a] 5 9 Reclassification of tax effect to retained earnings [c] (11 ) — Balance, end of year (183 ) (185 ) Accumulated net unrealized loss on available-for-sale Balance, beginning of year — (1 ) Reclassification of net loss to net income [a] — 1 Balance, end of year — — Total accumulated other comprehensive loss [d] $ (597 ) $ (1,451 ) [a] The effects on net income of amounts reclassified from AOCL, with presentation location, were as follows: 2017 2016 Cash flow hedges Sales $ (30 ) $ (87 ) Cost of sales (54 ) (87 ) Income tax 24 48 Net of tax (60 ) (126 ) Other long-term liabilities Cost of sales (6 ) (13 ) Income tax 1 4 Net of tax (5 ) (9 ) Total loss reclassified to net income $ (65 ) $ (135 ) [b] The amount of income tax benefit (expense) that has been allocated to each component of other comprehensive loss is as follows: 2017 2016 Accumulated net unrealized loss on translation of net investment in foreign operations Balance, beginning of year $ — $ — Net unrealized loss 7 — Balance, end of year 7 — Accumulated net unrealized (gain) loss on cash flow hedges Balance, beginning of year 53 97 Net unrealized (gain) loss (41 ) 4 Reclassification of net loss to net income (24 ) (48 ) Balance, end of year (12 ) 53 Accumulated net unrealized loss on other long-term liabilities Balance, beginning of year 30 31 Net unrealized (gain) loss (1 ) 3 Reclassification of net loss to net income (1 ) (4 ) Reclassification of tax effect to retained earnings (11 ) — Balance, end of year 17 30 Total income tax benefit $ 12 $ 83 [c] Amounts related to the reclassification of the stranded tax effects of the Company’s pensions and financial instruments to retained earnings in accordance with the adoption of [d] The amount of other comprehensive loss that is expected to be reclassified to net income during 2018 is $21 million.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Financial Instruments	21. FINANCIAL INSTRUMENTS [a] Foreign exchange contracts At December 31, 2017, the Company had outstanding foreign exchange forward contracts representing commitments to buy and sell various foreign currencies. Significant commitments are as follows: For Canadian dollars For U.S. dollars Buy (Sell) U.S. Weighted Euro Weighted Peso Weighted 2018 208 1.27249 22 1.48899 3,778 0.05170 2018 (980 ) 0.78027 (16 ) 0.66174 — — 2019 41 1.29098 9 1.56845 1,755 0.04678 2019 (596 ) 0.77989 (5 ) 0.64926 — — 2020 9 1.29947 — — 576 0.04684 2020 (291 ) 0.77338 — — — — 2021 (97 ) 0.78321 — — — — 2022 (26 ) 0.78978 — — — — (1,732 ) 10 6,109 For euros Buy (Sell) U.S. Weighted GBP Weighted Czech Weighted 2018 104 0.86349 7 1.11963 4,128 0.03791 2018 (130 ) 1.17146 (28 ) 0.83230 (14 ) 25.4660 2019 37 0.86276 1 1.11072 2,885 0.03799 2019 (68 ) 1.18414 (14 ) 0.83346 — — 2020 14 0.85860 — — 1,101 0.03851 2020 (16 ) 1.22742 (9 ) 0.88220 — — 2021 7 0.82532 — — — — 2021 (11 ) 1.29394 (6 ) 0.92098 — — 2022 1 0.75974 — — — — 2022 (1 ) 1.31155 — — — — (63 ) (49 ) 8,100 Based on forward foreign exchange rates as at December 31, 2017 for contracts with similar remaining terms to maturity, the gains and losses relating to the Company’s foreign exchange forward contracts recognized in other comprehensive income are approximately $101 million and $49 million, respectively [note 20] The Company does not enter into foreign exchange forward contracts for speculative purposes. [b] Financial assets and liabilities The Company’s financial assets and liabilities consist of the following: 2017 2016 Financial assets Cash and cash equivalents $ 726 $ 974 Restricted cash equivalents 113 194 Investment in ABCP — 60 Accounts receivable 6,878 6,165 Severance investments 4 3 Long-term receivables included in other assets [note 13] 180 229 $ 7,901 $ 7,625 Financial liabilities Bank indebtedness [note 16] $ 9 $ 8 Commercial paper [note 16] 250 615 Long-term debt (including portion due within one year) 3,303 2,533 Accounts payable 6,299 5,430 $ 9,861 $ 8,586 Derivatives designated as effective hedges, measured at fair value Foreign currency contracts Prepaid expenses and other $ 55 $ 12 Other assets 46 6 Other accrued liabilities (32 ) (134 ) Other long-term liabilities (17 ) (61 ) $ 52 $ (177 ) [c] Derivatives designated as effective hedges, measured at fair value The Company presents derivatives that are designated as effective hedges at gross fair values in the consolidated balance sheets. However, master netting and other similar arrangements allow net settlements under certain conditions. The following table shows the Company’s derivative foreign currency contracts at gross fair value as reflected in the consolidated balance sheets and the unrecognized impacts of master netting arrangements: Gross Gross Net December 31, 2017 Assets $ 101 $ 47 $ 54 Liabilities $ (49 ) $ (47 ) $ (2 ) December 31, 2016 Assets $ 18 $ 17 $ 1 Liabilities $ (195 ) $ (17 ) $ (178 ) [d] Fair value The Company determined the estimated fair values of its financial instruments based on valuation methodologies it believes are appropriate; however, considerable judgment is required to develop these estimates. Accordingly, these estimated fair values are not necessarily indicative of the amounts the Company could realize in a current market exchange. The estimated fair value amounts can be materially affected by the use of different assumptions or methodologies. The methods and assumptions used to estimate the fair value of financial instruments are described below: Cash and cash equivalents, restricted cash equivalents, accounts receivable, short-term borrowings and accounts payable. Due to the short period to maturity of the instruments, the carrying values as presented in the consolidated balance sheets are reasonable estimates of fair values. Commercial Paper Due to the short period to maturity of the commercial paper, the carrying value as presented in the consolidated balance sheet is a reasonable estimate of its fair value. Term debt The Company’s term debt includes $108 million due within one year. Due to the short period to maturity of this debt, the carrying value as presented in the consolidated balance sheet is a reasonable estimate of its fair value. Senior Notes The fair value of our Senior Notes are classified as Level 1 when we use quoted prices in active markets and Level 2 when the quoted prices are from less active markets or when other observable inputs are used to determine fair value. At December 31, 2017, the net book value of the Company’s Senior Notes was $3.12 billion and the estimated fair value was $3.27 billion, determined using active market prices. [e] Credit risk The Company’s financial assets that are exposed to credit risk consist primarily of cash and cash equivalents, restricted cash equivalents, accounts receivable, held-to-maturity Cash and cash equivalents and restricted cash equivalents, which consist of short-term investments, are only invested in bank term deposits and bank commercial paper with an investment grade credit rating. Credit risk is further reduced by limiting the amount which is invested in certain governments or any major financial institution. The Company is also exposed to credit risk from the potential default by any of its counterparties on its foreign exchange forward contracts. The Company mitigates this credit risk by dealing with counterparties who are major financial institutions that the Company anticipates will satisfy their obligations under the contracts. In the normal course of business, the Company is exposed to credit risk from its customers, substantially all of which are in the automotive industry and are subject to credit risks associated with the automotive industry. For the year ended December 31, 2017, sales to the Company’s six largest customers represented 81% [2016 - 82%] of the Company’s total sales; and substantially all of its sales are to customers in which the Company has ongoing contractual relationships. [f] Currency risk The Company is exposed to fluctuations in foreign exchange rates when manufacturing facilities have committed to the delivery of products for which the selling price has been quoted in currencies other than the facilities’ functional currency, and when materials and equipment are purchased in currencies other than the facilities’ functional currency. In an effort to manage this net foreign exchange exposure, the Company employs hedging programs, primarily through the use of foreign exchange forward contracts [note 21[a]] [g] Interest rate risk The Company is not exposed to significant interest rate risk due to the short-term maturity of its monetary current assets and current liabilities. In particular, the amount of interest income earned on cash and cash equivalents is impacted more by investment decisions made and the demands to have available cash on hand, than by movements in interest rates over a given period. In addition, the Company is not exposed to interest rate risk on its term debt and Senior Notes as the interest rates on these instruments are fixed.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Contingencies	22. CONTINGENCIES From time to time, the Company may become involved in regulatory proceedings, or become liable for legal, contractual and other claims by various parties, including customers, suppliers, former employees, class action plaintiffs and others. On an ongoing basis, the Company attempts to assess the likelihood of any adverse judgments or outcomes to these proceedings or claims, together with potential ranges of probable costs and losses. A determination of the provision required, if any, for these contingencies is made after analysis of each individual issue. The required provision may change in the future due to new developments in each matter or changes in approach such as a change in settlement strategy in dealing with these matters. [a] In September 2014, the Conselho Administrativo de Defesa Economica, Brazil’s Federal competition authority, attended at one of the Company’s operating divisions in Brazil to obtain information in connection with an ongoing antitrust investigation relating to suppliers of automotive door latches and related products. Proceedings of this nature can often continue for several years. At this time, management is unable to predict the duration or outcome of the Brazilian investigation. The Company’s policy is to comply with all applicable laws, including antitrust and competition laws. The Company has completed its previously announced global review focused on antitrust risk and does not currently anticipate any material liabilities in connection with the review. In the event of an antitrust violation, Magna could be subject to fines, penalties, restitution settlements and civil, administrative or criminal legal proceedings and other consequences, including reputational damage. [b] In certain circumstances, the Company is at risk for warranty costs including product liability and recall costs. Due to the nature of the costs, the Company makes its best estimate of the expected future costs [note 15]

Segmented Information

Segmented Information	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segmented Information	23. SEGMENTED INFORMATION [a] Magna is a global automotive supplier which has complete vehicle engineering and contract manufacturing expertise, as well as product capabilities which include body, chassis, exterior, seating, powertrain, active driver assistance, vision, closure and roof systems. Magna also has electronic and software capabilities across many of these areas. Magna’s success is directly dependent upon the levels of North American and European [and currently to a lesser extent on Asia and Rest of World] car and light truck production by its customers. OEM production volumes in each of North America and Europe may be impacted by a number of geographic factors, including general economic conditions, interest rates, consumer credit availability, fuel prices and availability, infrastructure, legislative changes, environmental emission and safety issues, and labour and/or trade relations. Given the differences between the regions in which the Company operates, Magna’s operations are segmented on a geographic basis. The Company’s segments consist of North America, Europe, Asia and Rest of World. The Company maintains management teams in each of the Company’s two primary markets, North America and Europe. The role of the North American and European management teams is to manage Magna’s interests to ensure a coordinated effort across the Company’s different product capabilities. In addition to maintaining key customer, supplier and government contacts in their respective markets, the regional management teams centrally manage key aspects of the Company’s operations while permitting the divisions enough flexibility through Magna’s decentralized structure to foster an entrepreneurial environment. Consistent with the above, the Company’s internal financial reporting separately segments key internal operating performance measures between North America, Europe, Asia and Rest of World for purposes of presentation to the chief operating decision maker to assist in the assessment of operating performance, the allocation of resources, and the long-term strategic direction and future global growth in the Company. The Company’s chief operating decision maker uses Adjusted Earnings before Interest and Income Taxes [“Adjusted EBIT”] as the measure of segment profit or loss, since management believes Adjusted EBIT is the most appropriate measure of operational profitability or loss for its reporting segments. Adjusted EBIT is calculated by taking net income from operations and adding back income taxes, interest expense, net, and other (income) expense, net. The accounting policies of each segment are the same as those set out under “Significant Accounting Policies” [note 1] The following tables show segment information for the Company’s reporting segments and a reconciliation of Adjusted EBIT to the Company’s consolidated income before income taxes: 2017 Total External Depreciation Adjusted Goodwill Fixed Fixed North America Canada $ 6,888 $ 6,215 $ 268 $ 883 United States 9,989 9,742 301 1,593 Mexico 5,505 4,867 241 1,084 Eliminations (1,477 ) — — — North America 20,905 20,824 $ 549 $ 2,064 $ 612 810 3,560 Europe Western Europe (excluding Great Britain) 12,371 11,949 624 2,443 Great Britain 597 595 35 162 Eastern Europe 2,674 2,379 199 728 Eliminations (465 ) — — — Europe 15,177 14,923 478 596 1,264 858 3,333 Asia 2,791 2,608 106 366 223 117 726 Rest of World 584 583 13 12 — 8 57 Corporate and Other [i] (511 ) 8 27 70 — 65 465 Total reportable segments $ 38,946 $ 38,946 $ 1,173 $ 3,108 $ 2,099 $ 1,858 $ 8,141 Current assets 11,220 Investments, intangible assets, goodwill, deferred tax assets and other assets 6,032 Consolidated total assets $ 25,393 2016 Total External Depreciation Adjusted Goodwill Fixed Fixed North America Canada $ 6,784 $ 6,214 $ 201 $ 721 United States 10,226 9,857 400 1,573 Mexico 5,121 4,586 309 999 Eliminations (1,387 ) — — — North America 20,744 20,657 $ 486 $ 2,061 $ 595 910 3,293 Europe Western Europe (excluding Great Britain) 10,537 10,159 578 1,912 Great Britain 658 656 24 127 Eastern Europe 2,285 2,000 136 545 Eliminations (400 ) — — — Europe 13,080 12,815 431 543 1,116 738 2,584 Asia 2,674 2,502 103 266 212 97 679 Rest of World 465 464 13 (17 ) — 11 62 Corporate and Other [i] (518 ) 7 23 45 — 51 404 Total reportable segments $ 36,445 $ 36,445 $ 1,056 $ 2,898 $ 1,923 $ 1,807 $ 7,022 Current assets 10,163 Investments, intangible assets, goodwill, deferred tax assets and other assets 5,381 Consolidated total assets $ 22,566 [i] Included in Corporate and Other Adjusted EBIT are intercompany fees charged to the automotive segments. [ii] The following table reconciles Net income from operations to Adjusted EBIT: 2017 2016 Net Income from operations $ 2,255 $ 2,074 Add (deduct): Interest expense, net 70 88 Other expense, net 39 30 Income taxes 744 706 Adjusted EBIT $ 3,108 $ 2,898 [b] The following table aggregates external revenues by customer as follows: 2017 2016 General Motors $ 6,854 $ 7,207 Ford Motor Company 6,058 5,667 Fiat / Chrysler Group 5,502 5,349 Daimler AG 4,719 4,294 BMW 4,231 3,786 Volkswagen 4,025 3,758 Other 7,557 6,384 $ 38,946 $ 36,445 [c] The following table summarizes external revenues generated by automotive products and services: 2017 2016 Body systems and chassis systems $ 9,744 $ 9,157 Powertrain systems 6,773 6,489 Exterior systems 5,325 5,272 Seating systems 5,203 5,079 Tooling, engineering and other 3,397 3,078 Complete vehicle assembly 2,944 2,190 Vision and electronic systems 2,891 2,768 Closure systems 2,669 2,412 $ 38,946 $ 36,445

Significant Accounting Polici32

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Principles of consolidation	Principles of consolidation The Consolidated Financial Statements include the accounts of Magna and its subsidiaries in which Magna has a controlling financial interest or is the primary beneficiary. The Company presents non-controlling
Financial instruments	Financial instruments The Company classifies all of its financial assets and financial liabilities as trading, held-to-maturity available-for-sale Held-for-trading Held-to-maturity Available-for-sale
Foreign currency translation	Foreign currency translation The Company operates globally, which gives rise to a risk that its earnings and cash flows may be adversely impacted by fluctuations in foreign exchange rates. Assets and liabilities of the Company’s operations having a functional currency other than the U.S. dollar are translated into U.S. dollars using the exchange rate in effect at year end, and revenues and expenses are translated at the average rate during the year. Exchange gains or losses on translation of the Company’s net investment in these operations are included in comprehensive income and are deferred in accumulated other comprehensive income. Foreign exchange gains or losses on debt that was designated as a hedge of the Company’s net investment in these operations are also recorded in accumulated other comprehensive income. Foreign exchange gains and losses on transactions occurring in a currency other than an operation’s functional currency are reflected in income, except for gains and losses on foreign exchange contracts used to hedge specific future commitments in foreign currencies and on intercompany balances which are designated as long-term investments. In particular, the Company uses foreign exchange forward contracts for the sole purpose of hedging certain of the Company’s future committed foreign currency based outflows and inflows. Most of the Company’s foreign exchange contracts are subject to master netting arrangements that provide for the net settlement of contracts, by counterparty, in the event of default or termination. All derivative instruments, including foreign exchange contracts, are recorded on the consolidated balance sheet at fair value. The fair values of derivatives are recorded on a gross basis in prepaid expenses and other, other assets, other accrued liabilities or other long-term liabilities. To the extent that cash flow hedges are effective, the change in their fair value is recorded in other comprehensive income; any ineffective portion is recorded in net income. Amounts accumulated in other comprehensive income are reclassified to net income in the period in which the hedged item affects net income. If the Company’s foreign exchange forward contracts cease to be effective as hedges, for example, if projected foreign cash inflows or outflows declined significantly, gains or losses pertaining to the portion of the hedging transactions in excess of projected foreign currency denominated cash flows would be recognized in income at the time this condition was identified.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents include cash on account, demand deposits and short-term investments with remaining maturities of less than three months at acquisition.
Inventories	Inventories Production inventories and tooling inventories manufactured in-house first-in, first-out Outsourced tooling inventories are valued at the lower of subcontracted costs and market.
Long-lived assets	Long-lived assets Fixed assets are recorded at historical cost. Depreciation is provided on a straight-line basis over the estimated useful lives of fixed assets at annual rates of 2 1 2 Finite-lived intangible assets, which have arisen principally through acquisitions, include customer relationship intangibles and patents and licences. These finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives which range from 4 to 15 years. The Company assesses fixed and finite-lived intangible assets for recoverability whenever indicators of impairment exist. If the carrying value of the asset exceeds the estimated undiscounted cash flows from the use of the asset, then an impairment loss is recognized to write the asset down to fair value. The fair value of fixed and finite-lived intangible assets is generally determined using estimated discounted future cash flows.
Goodwill	Goodwill Goodwill represents the excess of the cost of an acquired enterprise over the fair value of the identifiable assets acquired and liabilities assumed less any subsequent write-downs for impairment. Goodwill is reviewed for impairment in the fourth quarter of each year, or more frequently if indicators of potential impairment exist. Goodwill impairment is assessed based on a comparison of the fair value of a reporting unit to the underlying carrying value of the reporting unit’s net assets, including goodwill. When the carrying amount of the reporting unit exceeds its fair value, an impairment is recognized based on that difference. The fair value of a reporting unit is determined using the estimated discounted future cash flows of the reporting unit.
Investments in Affiliates	Investments in Affiliates The Company accounts for investments in companies over which it has the ability to exercise significant influence but does not hold a controlling interest, under the equity method. It records its proportionate share of income or losses in Equity income in the Consolidated Statements of Income. The Company monitors its investments in affiliates for indicators of other-than-temporary declines in value on an ongoing basis in accordance with GAAP. If the Company determines that an other-than-temporary decline in value has occurred, it recognizes an impairment loss, which is measured as the difference between the recorded book value and the fair value of the investment. Fair value is generally determined using an income approach based on discounted cash flows.
Other assets	Other assets Other assets include the long-term portion of certain receivables, which represent the recognized sales value of tooling and design and engineering services provided to customers under certain long-term contracts. The receivables will be paid in full upon completion of the contracts or in instalments based on forecasted production volumes. In the event that actual production volumes are less than those forecasted, a reimbursement for any shortfall will be made.
Preproduction costs related to long-term supply agreements	Preproduction costs related to long-term supply agreements Pre-operating Costs incurred [net of customer subsidies] related to design and engineering, which are paid for as part of subsequent production piece price amounts, are expensed as incurred unless a contractual guarantee for reimbursement exists. Costs incurred [net of customer subsidies] related to design and development costs for moulds, dies and other tools that the Company does not own [and that will be used in, and paid for as part of the piece price amount for, subsequent production] are expensed as incurred unless the supply agreement provides a contractual guarantee for reimbursement or the non-cancellable Where these preproduction costs are deemed to be a single unit of account combined with a subsequent parts production, the costs deferred in the above circumstances are included in other assets and amortized on a units-of-production
Warranty	Warranty The Company records product warranty liabilities based on its individual customer agreements. Under most customer agreements, the Company only accounts for existing or probable claims on product default issues when amounts related to such issues are probable and reasonably estimable. Under certain powertrain and complete vehicle engineering and assembly contracts, the Company records an estimate of future warranty-related costs based on the terms of the specific customer agreements and the specific customer’s warranty experience. Product liability provisions are established based on the Company’s best estimate of the amounts necessary to settle existing claims on product default issues. Recall costs are costs incurred when government regulators and/or the customer decides to recall a product due to a known or suspected performance issue, and the Company is required to participate, either voluntarily or involuntarily. Costs typically include the cost of the product being replaced, the customer’s cost of the recall and labour to remove and replace the defective part. When a decision to recall a product has been made or is probable, the Company’s portion of the estimated cost of the recall is recorded as a charge to income in that period. In making this estimate, judgement is required as to the number of units that may be returned as a result of the recall, the total cost of the recall campaign and the ultimate negotiated sharing of the cost between the Company, the customer and, in some cases, a supplier to the Company. The Company monitors warranty activity on an ongoing basis and adjusts reserve estimates when it is probable that future warranty costs will be different than those estimates.
Employee future benefit plans	Employee future benefit plans The cost of providing benefits through defined benefit pensions, lump sum termination and long service payment arrangements, and post-retirement benefits other than pensions is actuarially determined and recognized in income using the projected benefit method pro-rated The funded status of the plans is measured as the difference between the plan assets at fair value and the projected benefit obligation [“PBO”]. The aggregate of all overfunded plans is recorded in other assets, and the aggregate of all underfunded plans in long-term employee benefit liabilities. The portion of the amount by which the actuarial present value of benefits included in the PBO exceeds the fair value of plan assets, payable in the next twelve months, is reflected in other accrued liabilities. This is determined on a plan by plan basis.
Asset retirement obligation	Asset retirement obligation The Company recognizes its obligation to restore leased premises at the end of the lease by recording at lease inception the estimated fair value of this obligation as other long-term liabilities with a corresponding amount recognized as fixed assets. The fixed asset amount is amortized over the period from lease inception to the time the Company expects to vacate the premises, resulting in both depreciation and interest charges. The estimated fair value of the obligation is assessed for changes in the expected timing and extent of expenditures with changes related to the time value of money recorded as interest expense.
Revenue recognition	Revenue recognition Revenue from the sale of manufactured products is recognized when the price is fixed or determinable, collectability is reasonably assured and upon shipment to [or receipt by customers, depending on contractual terms], and acceptance by customers. Revenue from tooling and engineering services are accounted for as a separate revenue element only in circumstances where the tooling and engineering has value to the customer on a standalone basis. Revenues from significant engineering services and tooling contracts that qualify as separate revenue elements are recognized on a percentage-of-completion Percentage-of-completion Revenue and cost of goods sold, including amounts from engineering and tooling contracts, are presented on a gross basis in the consolidated statements of income and comprehensive income when the Company is acting as principal and is subject to significant risks and rewards in connection with the process of bringing the product to its final state and in the post-sale dealings with its customers. Otherwise, components of revenues and related costs are presented on a net basis. With respect to vehicle assembly sales, given that Magna is acting as principal with respect to purchased components and systems, the selling price to the customer includes the costs of such inputs.
Government assistance	Government assistance The Company makes periodic applications for financial assistance under available government assistance programs in the various jurisdictions that the Company operates. Grants relating to capital expenditures are reflected as a reduction of the cost of the related assets. Grants relating to current operating expenditures are generally recorded as a reduction of the related expense at the time the eligible expenses are incurred. The Company also receives tax credits and tax super allowances, the benefits of which are recorded as a reduction of income tax expense. In addition, the Company receives loans which are recorded as liabilities in amounts equal to the cash received. When a government loan is issued to the Company at a below-market rate of interest, the loan is initially recorded at its net present value, and accreted to its face value over the period of the loan. The benefit of the below-market rate of interest is accounted for like a government grant. It is measured as the difference between the initial carrying value of the loan and the cash proceeds received.
Research and development	Research and development Costs incurred in connection with research and development activities, to the extent not recoverable from the Company’s customers, are charged to expense as incurred. For the years ended December 31, 2017 and 2016, research and development costs charged to expense were approximately $522 million and $460 million, respectively.
Income taxes	Income taxes The Company uses the liability method of tax allocation to account for income taxes. Under the liability method of tax allocation, deferred tax assets and liabilities are determined based on differences between the financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. No deferred tax liability is recorded for taxes on undistributed earnings and translation adjustments of foreign subsidiaries if these items are either considered to be reinvested for the foreseeable future or if they are available for repatriation and are not subject to further tax on remittance. Taxes are recorded on such foreign undistributed earnings and translation adjustments when it becomes apparent that such earnings will be distributed in the foreseeable future and the Company will incur further significant tax on remittance. Recognition of uncertain tax positions is dependent on whether it is more-likely-than-not more-likely-than-not
Comprehensive income	Comprehensive income Other comprehensive income includes unrealized gains and losses on translation of the Company’s foreign operations that use the local currency as the functional currency, net of taxes, the change in fair value of available-for-sale Accumulated other comprehensive income is a separate component of shareholders’ equity which includes the accumulated balances of all components of other comprehensive income which are recognized in comprehensive income but excluded from net income.
Earnings per Common Share	Earnings per Common Share Basic earnings per Common Share are calculated on net income attributable to Magna International Inc. using the weighted average number of Common Shares outstanding during the year. Diluted earnings per Common Share are calculated on the weighted average number of Common Shares outstanding, including an adjustment for stock options outstanding using the treasury stock method. Common Shares that have not been released under the Company’s restricted stock plan or are being held in trust for purposes of the Company’s restricted stock unit program have been excluded from the calculation of basic earnings per share but have been included in the calculation of diluted earnings per share.
Use of estimates	Use of estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Accounting Standards (Tables)

Accounting Standards (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Changes and Error Corrections [Abstract]
Summary of Adopting New Standard on the Consolidated Statement of Cash flows	The impact of adopting this new standard on the consolidated statement of cash flows was as follows: 2016 Increase in changes in operating assets and liabilities $ (120 ) Decrease in cash provided from operating activities $ (120 ) Reduction in purchase of subsidiaries $ 120 Reclassification of restricted cash deposits $ 194 Reduction in cash used for investing activities $ 314 Reduction in net decrease in cash, cash equivalents and restricted cash equivalents, during the period $ 194 Increase in cash, cash equivalents and restricted cash equivalents, end of period $ 194

Other Expense, Net (Tables)

Other Expense, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Other Income and Expenses [Abstract]
Other Expense, Net	Other expense, net consists of: 2017 2016 North America [a] Restructuring charges $ 15 $ — Pension settlement — 13 15 13 Europe [b] Impairment of long-lived assets 64 — Impairment of investment 17 — Restructuring charges 14 17 95 17 Asia [c] Gain on formation of a new venture (45 ) — Corporate and Other [d] Gain on sale of investment (26 ) — $ 39 $ 30 [a] North America For the year ended December 31, 2017 During 2017, the Company recorded net restructuring charges of $15 million [$11 million after tax] in North America for one of its body and chassis systems operations. For the year ended December 31, 2016 During 2016, the Company offered a limited lump-sum non-cash [b] Europe For the year ended December 31, 2017 During 2017, the Company recorded fixed asset impairment charges of $64 million [$64 million after tax] in Europe related to its body and chassis systems facilities. During 2017, the Company recorded an impairment charge of $17 million [$17 million after tax] on one of its European investments, which was accounted for under the equity method. During 2017, the Company recorded net restructuring charges of $14 million [$14 million after tax] in Germany at a powertrain systems facility. For the year ended December 31, 2016 During 2016, the Company recorded net restructuring charges of $17 million [$17 million after tax] in Germany at a powertrain systems facility. [c] Asia For the year ended December 31, 2017 During 2017, the Company formed a new venture in China with Hubei Aviation Precision Machinery Co., Ltd. The transaction resulted in a gain of $45 million [$34 million after tax] [note 8] [d] Corporate and Other For the year ended December 31, 2017 During 2017, the Company’s investment in Argus Cyber Security Ltd. was sold for proceeds of $33 million. A gain of $26 million [$26 million after tax] was recognized on the sale of the investment, which was accounted for under the cost method.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Computation of Earnings Per Share	Earnings per share are computed as follows: 2017 2016 Basic earnings per Common Share: Net income attributable to Magna International Inc. $ 2,206 $ 2,031 Weighted average number of Common Shares outstanding during the year 371.8 391.0 Basic earnings per Common Share $ 5.93 $ 5.19 Diluted earnings per Common Share: Net income attributable to Magna International Inc. $ 2,206 $ 2,031 Weighted average number of Common Shares outstanding during the year 371.8 391.0 Adjustments Stock options and restricted stock [a] 2.1 2.2 373.9 393.2 Diluted earnings per Common Share $ 5.90 $ 5.16 [a] Diluted earnings per Common Share exclude 1.2 million [2016 – 3.4 million] Common Shares issuable under the Company’s Incentive Stock Option Plan because these options were not “in-the-money”. two-class

Details of Cash From Operatin36

Details of Cash From Operating Activities (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Components of Cash, Cash Equivalents and Restricted Cash Equivalents	[a] Cash, cash equivalents and restricted cash equivalents consist of: 2017 2016 Bank term deposits and bankers’ acceptances $ 234 $ 498 Cash 492 476 Cash and cash equivalents $ 726 $ 974 Restricted cash equivalents included in prepaid expenses [note 16] 113 194 $ 839 $ 1,168
Details of Items Not Involving Current Cash Flows	[b] Items not involving current cash flows: 2017 2016 Depreciation and amortization $ 1,173 $ 1,056 Amortization of other assets included in cost of goods sold 134 135 Impairment charges [note 3] 81 — Other non-cash (2 ) 27 Deferred income taxes [note 11] (3 ) 22 Equity income in excess of dividends received (6 ) (9 ) Non-cash (71 ) — $ 1,306 $ 1,231
Changes in Operating Assets and Liabilities	[c] Changes in operating assets and liabilities: 2017 2016 Accounts receivable $ (297 ) $ (446 ) Inventories (362 ) (159 ) Prepaid expenses and other 25 69 Accounts payable 494 562 Accrued salaries and wages 7 94 Other accrued liabilities (46 ) (145 ) Income taxes payable (53 ) (14 ) $ (232 ) $ (39 )

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Summary of Amounts Recognized for Assets and Liabilities Acquired	The following table summarizes the amounts recognized for assets acquired and liabilities assumed: Final allocation Cash $ 136 Non-cash (395 ) Investments 1,497 Fixed assets 445 Goodwill 590 Other assets 24 Intangibles 372 Deferred tax assets 34 Long-term employee benefit liabilities (137 ) Long-term debt (117 ) Other long-term liabilities (52 ) Deferred tax liabilities (119 ) Non-controlling (287 ) Consideration paid 1,991 Less: Cash acquired (136 ) Net cash outflow $ 1,855
Equity Investments Acquired as Part of Business Combination	The investments amount includes the following equity investments that were acquired as part of the business combination: Ownership Investment percentage balance Getrag Ford Transmission GmbH 50.0 % $ 340 Getrag (Jiangxi) Transmission Co., Ltd [“GJT”] 66.7 % $ 1,077 Dongfeng Getrag Transmission Co. Ltd 50.0 % $ 80

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories consist of: 2017 2016 Raw materials and supplies $ 1,254 $ 1,007 Work-in-process 331 264 Finished goods 433 327 Tooling and engineering 1,361 1,206 $ 3,379 $ 2,804

Investments in Affiliated Com39

Investments in Affiliated Companies (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of Total financial Results of Equity Method Investees	A summary of the total financial results, as reported by the Company’s equity method investees, in the aggregate, at December 31 was as follows: Summarized Balance Sheets 2017 2016 Current assets $ 2,041 $ 2,478 Non-current $ 4,159 $ 4,450 Current liabilities $ 1,516 $ 2,329 Long-term liabilities $ 1,378 $ 1,268 Summarized Income Statements 2017 2016 Sales $ 5,425 $ 5,009 Cost of goods sold, expenses and income taxes 5,099 4,668 Net income $ 326 $ 341
Carrying Amounts and Classification of Assets and Liabilities Included in Consolidated Balance Sheet Related to Consolidated VIE	The carrying amounts and classification of assets and liabilities included in the Company’s consolidated balance sheet related to the consolidated VIEs are as follows: 2017 2016 Current assets $ 260 $ 256 Non-current assets 134 221 Total assets $ 394 $ 477 Current liabilities $ 251 $ 288 Non-current liabilities 4 2 Total liabilities $ 255 $ 290
Equity Method Investments [Member]
Ownership Percentages and Carrying Value Principal Equity Method Investments	The ownership percentages and carrying value of the Company’s principal equity method investments at December 31 were as follows [in millions, except percentages]: 2017 2016 Litens Automotive Partnership [“Litens”] [i] 76.7 % $ 221 $ 173 Getrag (Jiangxi) Transmission Co., Ltd 66.7 % $ 1,161 $ 1,015 Getrag Ford Transmission GmbH 50.0 % $ 334 $ 325 Dongfeng Getrag Transmission Co. Ltd [“DGT”] [ii] 50.0 % $ 84 $ 79 HAPM 49.9 % $ 116 $ — [i] Litens – The Company accounts for its investment in Litens under the equity method of accounting as a result of significant participating rights that prevent control. [ii] DGT – DGT is a variable interest entity [“VIE”] and depends on the Company and the Dongfeng Motor Group Company for any additional cash needs. The Company cannot make key operating decisions considered to be most significant to the VIE, and is therefore not considered to be the primary beneficiary. Our known maximum exposure to loss approximated the carrying value of our investment balance as at December 31, 2017.

Fixed Assets (Tables)

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Components of Fixed Assets	Fixed assets consist of: 2017 2016 Cost Land $ 269 $ 254 Buildings 2,232 1,942 Machinery and equipment 14,273 12,349 16,774 14,545 Accumulated depreciation Buildings (778 ) (652 ) Machinery and equipment (7,855 ) (6,871 ) $ 8,141 $ 7,022

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill by Segment	The following is a continuity of the Company’s goodwill by segment: North Europe Asia Total Balance, December 31, 2015 $ 590 $ 525 $ 229 $ 1,344 Acquisitions [note 6] — 620 (5 ) 615 Foreign exchange and other 5 (29 ) (12 ) (36 ) Balance, December 31, 2016 595 1,116 212 1,923 Acquisitions — 1 — 1 Foreign exchange and other 17 147 11 175 Balance, December 31, 2017 $ 612 $ 1,264 $ 223 $ 2,099

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Summary of Income Tax Rate	[a] The provision for income taxes differs from the expense that would be obtained by applying the Canadian statutory income tax rate as a result of the following: 2017 2016 Canadian statutory income tax rate 26.5 % 26.5 % Manufacturing and processing profits deduction (0.3 ) (0.3 ) Foreign rate differentials (0.4 ) (0.2 ) Losses not benefited 1.6 0.8 Utilization of losses previously not benefited (0.1 ) (0.2 ) Earnings of equity accounted investees (1.4 ) (1.2 ) Tax on repatriation of foreign earnings 1.4 0.7 Valuation allowance on deferred tax assets [i] (0.1 ) (0.4 ) US tax reform [ii] (0.8 ) — Research and development tax credits (1.2 ) (1.5 ) Reserve for uncertain tax positions (0.2 ) 0.2 Non-deductible 0.3 1.3 Others (0.5 ) (0.3 ) Effective income tax rate 24.8 % 25.4 % [i] GAAP requires that the Company assess whether valuation allowances should be established or maintained against its deferred tax assets, based on consideration of all available evidence, using a “more-likely-than-not” standard. The factors the Company uses to assess the likelihood of realization are its history of losses, forecasts of future pre-tax [ii] On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act [the “US Tax Reform”], which reduces the US federal corporate tax rate from 35% to 21% beginning in 2018, requires companies to pay a one-time Deferred tax assets and liabilities: The Company re-measured One-time Global Intangible Low-Taxed [iii] Non-deductible re-measurement
Details of Income before Income Taxes by Jurisdiction	[b] The details of income before income taxes by jurisdiction are as follows: 2017 2016 Canadian $ 592 $ 617 Foreign 2,407 2,163 $ 2,999 $ 2,780
Details of Income Tax Provision	[c] The details of the income tax provision are as follows: 2017 2016 Current Canadian $ 140 $ 127 Foreign 607 559 747 686 Deferred Canadian (7 ) 16 Foreign 4 4 (3 ) 20 $ 744 $ 706
Summary of Deferred Income Taxes Provided on Temporary Differences	[d] Deferred income taxes have been provided on temporary differences, which consist of the following: 2017 2016 Tax depreciation in excess of book depreciation $ 62 $ 58 Tax amortization in excess of book amortization 10 2 Liabilities currently (not deductible) deductible for tax (7 ) 5 Net tax losses benefited (18 ) (31 ) Change in valuation allowance on deferred tax assets (2 ) (12 ) Tax on undistributed foreign earnings 9 8 US tax reform (61 ) — Others 4 (10 ) $ (3 ) $ 20
Summary of Deferred Tax Assets and Liabilities	[e] Deferred tax assets and liabilities consist of the following temporary differences: 2017 2016 Assets Tax benefit of loss carryforwards $ 747 $ 715 Liabilities currently not deductible for tax 171 188 Tax credit carryforwards 59 22 Unrealized loss on cash flow hedges and retirement liabilities 75 134 Others 21 21 1,073 1,080 Valuation allowance against tax benefit of loss carryforwards (629 ) (615 ) Other valuation allowance (129 ) (66 ) 315 399 Liabilities Tax depreciation in excess of book depreciation 212 266 Other assets book value in excess of tax values 60 57 Tax on undistributed foreign earnings 106 98 Unrealized gain on cash flow hedges and retirement liabilities 24 3 402 424 Net deferred tax liabilities $ (87 ) $ (25 )
Net Deferred Tax Liabilities Presented on Consolidated Balance Sheet	The net deferred tax liabilities are presented on the consolidated balance sheet in the following categories: 2017 2016 Long-term deferred tax assets $ 236 $ 268 Long-term deferred tax liabilities (323 ) (293 ) $ (87 ) $ (25 )
Summary of Changes in Gross Unrecognized Tax Benefits	[i] As at December 31, 2017 and 2016, the Company’s gross unrecognized tax benefits were $243 and $220 million, respectively [excluding interest and penalties], of which $222 and $201 million, respectively, if recognized, would affect the Company’s effective tax rate. The gross unrecognized tax benefits differ from the amount that would affect the Company’s effective tax rate due primarily to the impact of the valuation allowance on deferred tax assets. A summary of the changes in gross unrecognized tax benefits is as follows: 2017 2016 Balance, beginning of year $ 220 $ 221 Increase based on tax positions related to current year 21 21 Increase (decrease) based on tax positions of prior years 7 (52 ) Increase related to acquisitions — 44 Settlements (2 ) (2 ) Statute expirations (17 ) (8 ) Foreign currency translation 14 (4 ) $ 243 $ 220

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets were as follows: Estimated weighted 2017 2016 Cost Customer relationship intangibles [note 6] 10 $ 438 $ 392 Computer software 3 348 316 Patent and licenses 13 342 278 1,128 986 Accumulated depreciation Customer relationship intangibles [note 6] (162 ) (96 ) Computer software (263 ) (242 ) Patent and licenses (53 ) (27 ) $ 650 $ 621

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Summary of Other Assets	Other assets consist of: 2017 2016 Preproduction costs related to long-term supply agreements with contractual guarantee for reimbursement $ 689 $ 420 Long-term receivables [note 21[c]] 180 229 Pension overfunded status [note 17[a]] 23 21 Unrealized gain on cash flow hedges [note 21] 46 6 Other, net 21 43 $ 959 $ 719

Warranty (Tables)

Warranty (Tables)	12 Months Ended
	Dec. 31, 2017
Guarantees and Product Warranties [Abstract]
Schedule of Company's Warranty Accruals	The following is a continuity of the Company’s warranty accruals: 2017 2016 Balance, beginning of year $ 270 $ 59 Expense, net 51 101 Settlements (81 ) (59 ) Acquisitions [i] — 174 Foreign exchange and other 15 (5 ) $ 255 $ 270 [i] $127 million of the acquisition balance relates to a pre-acquisition [note 6]

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Short Term Borrowings	The Company’s short-term borrowings consist of the following: 2017 2016 Bank indebtedness [i] $ 9 $ 8 Commercial paper [ii] 250 615 $ 259 $ 623 [i] The Company has an agreement for a credit facility that is drawn in euros. The Company is required to secure any amounts drawn on the facility with a USD cash deposit of 105% of the outstanding euro balance. As at December 31, 2017, the gross amount outstanding under the credit facility was $108 million [€90 million]. The credit agreement includes a netting arrangement with the bank that provides for the legal right of setoff. Accordingly, as at December 31, 2017, this liability balance was offset against the related restricted cash equivalent deposit of $113 million. The remaining net deposit of $5 million was included in the prepaid expenses and other balance, and is restricted under the terms of the loan. As at December 31, 2016, the gross amount outstanding under the credit facility was $185 million [€175 million], and the net deposit included in the prepaid expenses and other balance was $9 million. [ii] During 2016, the Company established a U.S. commercial paper program [the “U.S. Program”] and a euro-commercial paper program [the “euro-Program”]. Under the U.S. Program, the Company may issue U.S. commercial paper notes [the “U.S. notes”] up to a maximum aggregate amount of U.S. $500 million. The U.S. Program is supported by the Company’s existing global credit facility. The proceeds from the issuance of the U.S. notes are being used for general corporate purposes. As at December 31, 2017, $70 million [2016 - $295 million] of U.S. notes were outstanding, with a weighted-average interest rate of 1.84% [2016 – 1.04%], and maturities less than three months. Under the euro-Program, the Company may issue euro-commercial paper notes [the “euro notes”] up to a maximum aggregate amount of €500 million or its equivalent in alternative currencies. The euro notes issued are guaranteed by the Company’s existing global credit facility. The proceeds from the issuance of the euro notes are being used for general corporate purposes. As of December 31, 2017, $180 million or €150 million [2016 – $320 million or €304 million] of euro notes were outstanding, with a negative weighted-average interest rate of 0.22% [2016 – 0.07%], and maturities less than three months.
Schedule of Company's Long-Term Debt	[a] The Company’s long-term debt, which is substantially uncollateralized, consists of the following: 2017 2016 Senior Notes [note 16 [d]] $750 million Senior Notes due 2024 at 3.625% $ 746 $ 746 $650 million Senior Notes due 2025 at 4.150% 643 643 €550 million Senior Notes due 2023 at 1.900% 657 576 €600 million Senior Notes due 2027 at 1.500% [c] 717 — Cdn$425 million Senior Notes due 2022 at 3.100% 338 315 Bank term debt at a weighted average interest rate of approximately 5.68% [2016 – 7.3%], denominated primarily in Chinese renminbi, Indian rupee, euro and Brazilian real 99 117 Government loans at a weighted average interest rate of approximately 1.73% [2016 – 2.53%], denominated primarily in euro, Canadian dollar and Brazilian real 84 92 Other 19 44 3,303 2,533 Less due within one year 108 139 $ 3,195 $ 2,394
Schedule of Future Principal Repayments on Long-Term Debt	[b] Future principal repayments on long-term debt are estimated to be as follows: 2018 $ 108 2019 32 2020 28 2021 25 2022 342 Thereafter 2,768 $3,303
Interest Expense, Net	[f] Interest expense, net includes: 2017 2016 Interest expense Current $ 10 $ 22 Long-term 80 78 90 100 Interest income (20 ) (12 ) Interest expense, net $ 70 $ 88
Company's Commitments under Operating Leases and Requiring Annual Rental Payments	[h] At December 31, 2017, the Company had commitments under operating leases requiring annual rental payments as follows: Total 2018 $ 316 2019 272 2020 239 2021 212 2022 189 Thereafter 769 $ 1,997

Long-Term Employee Benefit Li47

Long-Term Employee Benefit Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Long-Term Employee Benefit Liabilities	Long-term employee benefit liabilities consist of: 2017 2016 Defined benefit pension plans and other [a] $ 264 $ 313 Termination and long service arrangements [b] 368 319 Retirement medical benefits plans [c] 31 29 Other long-term employee benefits 7 6 Long-term employee benefit obligations $ 670 $ 667
Schedule of Company's Defined Benefit Pension Plans	Information about the Company’s defined benefit pension plans is as follows: 2017 2016 Projected benefit obligation Beginning of year $ 624 $ 493 Current service cost 13 14 Interest cost 18 21 Actuarial losses and changes in actuarial assumptions 8 28 Benefits paid (23 ) (22 ) Benefits paid – settlements [ii] — (32 ) Acquisition — 129 Gain on settlement — (5 ) Foreign exchange 47 (2 ) End of year 687 624 Plan assets at fair value [iii] Beginning of year 330 326 Return on plan assets 33 22 Employer contributions [i] 82 19 Benefits paid (18 ) (17 ) Benefits paid – settlements [ii] — (32 ) Acquisition — 8 Foreign exchange 16 4 End of year 443 330 Ending funded status $ 244 $ 294 Amounts recorded in the consolidated balance sheet Non-current [note 13] $ (23 ) $ (21 ) Current liability 3 2 Non-current 264 313 Net amount $ 244 $ 294 Amounts recorded in accumulated other comprehensive income $ (135 ) $ (144 ) Net periodic benefit cost Current service cost $ 13 $ 14 Interest cost 18 21 Return on plan assets (20 ) (20 ) Benefits paid – settlements [ii] — 13 Actuarial losses 4 3 Net periodic benefit cost $ 15 $ 31 [i] During the fourth quarter of 2017, the Company contributed $60 million to fund the Company’s U.S. defined benefit pension plans. [ii] During the fourth quarter of 2016, the Company offered a limited lump-sum lump-sum lump-sum non-cash [note 3] [iii] The asset allocation of the Company’s defined benefit pension plans at December 31, 2017 and the target allocation for 2018 is as follows: 2018 2017 Equity securities 55-75 % 50 % Fixed income securities 25-45 % 35 % Cash and cash equivalents 0-15 % 15 % 100 % 100 %
Future Benefit Payments	[d] Future benefit payments Defined Termination Retirement Total Expected employer contributions - 2018 $ 19 $ 10 $ 2 $ 31 Expected benefit payments: 2018 $ 23 $ 10 $ 2 $ 35 2019 23 11 2 36 2020 24 14 2 40 2021 25 15 2 42 2022 26 18 2 46 Thereafter 143 99 9 251 $ 264 $ 167 $ 19 $ 450
Termination and Long Service Arrangements [Member]
Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost	The weighted average significant actuarial assumptions adopted in measuring the Company’s projected termination and long service benefit obligations and net periodic benefit cost are as follows: 2017 2016 Discount rate 2.6 % 2.9 % Rate of compensation increase 2.6 % 2.7 %
Schedule of Company's Defined Benefit Pension Plans	Information about the Company’s termination and long service arrangements is as follows: 2017 2016 Projected benefit obligation Beginning of year $ 327 $ 295 Current service cost 20 20 Interest cost 7 8 Actuarial (gains) losses and changes in actuarial assumptions (7 ) 15 Benefits paid (11 ) (11 ) Acquisition — 16 Foreign exchange 42 (16 ) Ending funded status $ 378 $ 327 Amounts recorded in the consolidated balance sheet Current liability $ 10 $ 8 Non-current 368 319 Net amount $ 378 $ 327 Amounts recorded in accumulated other comprehensive income Unrecognized actuarial losses $ (73 ) $ (84 ) Net periodic benefit cost Current service cost $ 20 $ 20 Interest cost 7 8 Actuarial losses 3 1 Net periodic benefit cost $ 30 $ 29
Retirement Medical Benefits Plans [Member]
Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost	The weighted average discount rates used in measuring the Company’s projected retirement medical benefit obligations and net periodic benefit cost are as follows: 2017 2016 Retirement medical benefit obligations 3.4 % 3.8 % Net periodic benefit cost 3.8 % 3.9 % Health care cost inflation 6.6 % 7.0 %
Schedule of Company's Defined Benefit Pension Plans	Information about the Company’s retirement medical benefits plans are as follows: 2017 2016 Projected benefit obligation Beginning of year $ 31 $ 32 Interest cost 1 1 Actuarial losses (gains) and changes in actuarial assumptions 2 (1 ) Benefits paid (2 ) (1 ) Foreign exchange 1 — Ending funded status $ 33 $ 31 Amounts recorded in the consolidated balance sheet Current liability $ 2 $ 2 Non-current 31 29 Net amount $ 33 $ 31 Amounts recorded in accumulated other comprehensive income Unrecognized past service costs $ 1 $ 1 Unrecognized actuarial gains 8 11 Total accumulated other comprehensive income $ 9 $ 12 Net periodic benefit cost Interest cost $ 1 $ 1 Actuarial gains (1 ) (1 ) Net periodic benefit cost $ — $ —
Pension Plan, Defined Benefit [Member]
Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost	The weighted average significant actuarial assumptions adopted in measuring the Company’s obligations and costs are as follows: 2017 2016 Projected benefit obligation Discount rate 2.9 % 3.1 % Rate of compensation increase 2.6 % 2.3 % Net periodic benefit cost Discount rate 3.1 % 3.2 % Rate of compensation increase 2.5 % 2.4 % Expected return on plan assets 5.8 % 5.8 %

Other Long-Term Liabilities (Ta

Other Long-Term Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Particulars of Other Long-Term Liabilities	Other long-term liabilities consist of: 2017 2016 Long-term portion of fair value of hedges [note 21] $ 17 $ 61 Long-term portion of income taxes payable 225 181 Asset retirement obligation 34 28 Long-term lease inducements 15 16 Deferred revenue 13 12 $ 304 $ 298

Capital Stock (Tables)

Capital Stock (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Summary of Normal Course Issuer Bids	The following is a summary of the Normal Course Issuer Bids [number of shares in the table below are expressed in whole numbers]: Maximum 2017 2016 number Shares Cash Shares Cash of shares purchased amount purchased amount 2015 Bid 40,000,000 — $ — 20,313,194 $ 818 2016 Bid 38,000,000 23,245,377 1,109 2,021,824 86 2017 Bid 35,800,000 3,011,666 162 — — 26,257,043 $ 1,271 22,335,018 $ 904
Maximum Number of Shares Outstanding Exercised or Converted	[c] The following table presents the maximum number of shares that would be outstanding if all the dilutive instruments outstanding at March 6, 2018 were exercised or converted: Common Shares 358,395,997 Stock options (i) 7,661,769 366,057,766 (i) Options to purchase Common Shares are exercisable by the holder in accordance with the vesting provisions and upon payment of the exercise price as may be determined from time to time pursuant to the Company’s stock option plans.

Accumulated Other Comprehensi50

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The following is a continuity schedule of accumulated other comprehensive loss: 2017 2016 Accumulated net unrealized loss on translation of net investment in foreign operations Balance, beginning of year $ (1,131 ) $ (1,042 ) Net unrealized gain (loss) 657 (109 ) Repurchase of shares under normal course issuer bids [note 19] 21 20 Balance, end of year (453 ) (1,131 ) Accumulated net unrealized gain (loss) on cash flow hedges [b] Balance, beginning of year (135 ) (262 ) Net unrealized gain 114 1 Reclassification of net loss to net income [a] 60 126 Balance, end of year 39 (135 ) Accumulated net unrealized loss on other long-term liabilities [b] Balance, beginning of year (185 ) (165 ) Net unrealized gain (loss) 8 (29 ) Reclassification of net loss to net income [a] 5 9 Reclassification of tax effect to retained earnings [c] (11 ) — Balance, end of year (183 ) (185 ) Accumulated net unrealized loss on available-for-sale Balance, beginning of year — (1 ) Reclassification of net loss to net income [a] — 1 Balance, end of year — — Total accumulated other comprehensive loss [d] $ (597 ) $ (1,451 )
Schedule of Net Income Amounts Reclassified from AOCL	[a] The effects on net income of amounts reclassified from AOCL, with presentation location, were as follows: 2017 2016 Cash flow hedges Sales $ (30 ) $ (87 ) Cost of sales (54 ) (87 ) Income tax 24 48 Net of tax (60 ) (126 ) Other long-term liabilities Cost of sales (6 ) (13 ) Income tax 1 4 Net of tax (5 ) (9 ) Total loss reclassified to net income $ (65 ) $ (135 )
Summary of Income Tax Benefit (Expense) to Component of Other Comprehensive Loss	[b] The amount of income tax benefit (expense) that has been allocated to each component of other comprehensive loss is as follows: 2017 2016 Accumulated net unrealized loss on translation of net investment in foreign operations Balance, beginning of year $ — $ — Net unrealized loss 7 — Balance, end of year 7 — Accumulated net unrealized (gain) loss on cash flow hedges Balance, beginning of year 53 97 Net unrealized (gain) loss (41 ) 4 Reclassification of net loss to net income (24 ) (48 ) Balance, end of year (12 ) 53 Accumulated net unrealized loss on other long-term liabilities Balance, beginning of year 30 31 Net unrealized (gain) loss (1 ) 3 Reclassification of net loss to net income (1 ) (4 ) Reclassification of tax effect to retained earnings (11 ) — Balance, end of year 17 30 Total income tax benefit $ 12 $ 83

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Foreign Exchange Forward Contracts Representing Commitments to Buy and Sell Various Foreign Currencies	At December 31, 2017, the Company had outstanding foreign exchange forward contracts representing commitments to buy and sell various foreign currencies. Significant commitments are as follows: For Canadian dollars For U.S. dollars Buy (Sell) U.S. Weighted Euro Weighted Peso Weighted 2018 208 1.27249 22 1.48899 3,778 0.05170 2018 (980 ) 0.78027 (16 ) 0.66174 — — 2019 41 1.29098 9 1.56845 1,755 0.04678 2019 (596 ) 0.77989 (5 ) 0.64926 — — 2020 9 1.29947 — — 576 0.04684 2020 (291 ) 0.77338 — — — — 2021 (97 ) 0.78321 — — — — 2022 (26 ) 0.78978 — — — — (1,732 ) 10 6,109 For euros Buy (Sell) U.S. Weighted GBP Weighted Czech Weighted 2018 104 0.86349 7 1.11963 4,128 0.03791 2018 (130 ) 1.17146 (28 ) 0.83230 (14 ) 25.4660 2019 37 0.86276 1 1.11072 2,885 0.03799 2019 (68 ) 1.18414 (14 ) 0.83346 — — 2020 14 0.85860 — — 1,101 0.03851 2020 (16 ) 1.22742 (9 ) 0.88220 — — 2021 7 0.82532 — — — — 2021 (11 ) 1.29394 (6 ) 0.92098 — — 2022 1 0.75974 — — — — 2022 (1 ) 1.31155 — — — — (63 ) (49 ) 8,100
Schedule of Company's Financial Assets and Liabilities	The Company’s financial assets and liabilities consist of the following: 2017 2016 Financial assets Cash and cash equivalents $ 726 $ 974 Restricted cash equivalents 113 194 Investment in ABCP — 60 Accounts receivable 6,878 6,165 Severance investments 4 3 Long-term receivables included in other assets [note 13] 180 229 $ 7,901 $ 7,625 Financial liabilities Bank indebtedness [note 16] $ 9 $ 8 Commercial paper [note 16] 250 615 Long-term debt (including portion due within one year) 3,303 2,533 Accounts payable 6,299 5,430 $ 9,861 $ 8,586 Derivatives designated as effective hedges, measured at fair value Foreign currency contracts Prepaid expenses and other $ 55 $ 12 Other assets 46 6 Other accrued liabilities (32 ) (134 ) Other long-term liabilities (17 ) (61 ) $ 52 $ (177 )
Derivative Foreign Currency Contracts at Gross Fair Value and Unrecognized Impacts of Master Netting Arrangements	The following table shows the Company’s derivative foreign currency contracts at gross fair value as reflected in the consolidated balance sheets and the unrecognized impacts of master netting arrangements: Gross Gross Net December 31, 2017 Assets $ 101 $ 47 $ 54 Liabilities $ (49 ) $ (47 ) $ (2 ) December 31, 2016 Assets $ 18 $ 17 $ 1 Liabilities $ (195 ) $ (17 ) $ (178 )

Segmented Information (Tables)

Segmented Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Schedule of Segment Information for Reporting Segments and a Reconciliation for Adjusted EBIT to Consolidated Income Before Income Taxes	The following tables show segment information for the Company’s reporting segments and a reconciliation of Adjusted EBIT to the Company’s consolidated income before income taxes: 2017 Total External Depreciation Adjusted Goodwill Fixed Fixed North America Canada $ 6,888 $ 6,215 $ 268 $ 883 United States 9,989 9,742 301 1,593 Mexico 5,505 4,867 241 1,084 Eliminations (1,477 ) — — — North America 20,905 20,824 $ 549 $ 2,064 $ 612 810 3,560 Europe Western Europe (excluding Great Britain) 12,371 11,949 624 2,443 Great Britain 597 595 35 162 Eastern Europe 2,674 2,379 199 728 Eliminations (465 ) — — — Europe 15,177 14,923 478 596 1,264 858 3,333 Asia 2,791 2,608 106 366 223 117 726 Rest of World 584 583 13 12 — 8 57 Corporate and Other [i] (511 ) 8 27 70 — 65 465 Total reportable segments $ 38,946 $ 38,946 $ 1,173 $ 3,108 $ 2,099 $ 1,858 $ 8,141 Current assets 11,220 Investments, intangible assets, goodwill, deferred tax assets and other assets 6,032 Consolidated total assets $ 25,393 2016 Total External Depreciation Adjusted Goodwill Fixed Fixed North America Canada $ 6,784 $ 6,214 $ 201 $ 721 United States 10,226 9,857 400 1,573 Mexico 5,121 4,586 309 999 Eliminations (1,387 ) — — — North America 20,744 20,657 $ 486 $ 2,061 $ 595 910 3,293 Europe Western Europe (excluding Great Britain) 10,537 10,159 578 1,912 Great Britain 658 656 24 127 Eastern Europe 2,285 2,000 136 545 Eliminations (400 ) — — — Europe 13,080 12,815 431 543 1,116 738 2,584 Asia 2,674 2,502 103 266 212 97 679 Rest of World 465 464 13 (17 ) — 11 62 Corporate and Other [i] (518 ) 7 23 45 — 51 404 Total reportable segments $ 36,445 $ 36,445 $ 1,056 $ 2,898 $ 1,923 $ 1,807 $ 7,022 Current assets 10,163 Investments, intangible assets, goodwill, deferred tax assets and other assets 5,381 Consolidated total assets $ 22,566 [i] Included in Corporate and Other Adjusted EBIT are intercompany fees charged to the automotive segments. [ii] The following table reconciles Net income from operations to Adjusted EBIT: 2017 2016 Net Income from operations $ 2,255 $ 2,074 Add (deduct): Interest expense, net 70 88 Other expense, net 39 30 Income taxes 744 706 Adjusted EBIT $ 3,108 $ 2,898
Schedule of Aggregates External Revenues by Customer	[b] The following table aggregates external revenues by customer as follows: 2017 2016 General Motors $ 6,854 $ 7,207 Ford Motor Company 6,058 5,667 Fiat / Chrysler Group 5,502 5,349 Daimler AG 4,719 4,294 BMW 4,231 3,786 Volkswagen 4,025 3,758 Other 7,557 6,384 $ 38,946 $ 36,445
Summary of External Revenues by Automotive Products and Services	[c] The following table summarizes external revenues generated by automotive products and services: 2017 2016 Body systems and chassis systems $ 9,744 $ 9,157 Powertrain systems 6,773 6,489 Exterior systems 5,325 5,272 Seating systems 5,203 5,079 Tooling, engineering and other 3,397 3,078 Complete vehicle assembly 2,944 2,190 Vision and electronic systems 2,891 2,768 Closure systems 2,669 2,412 $ 38,946 $ 36,445

Significant Accounting Polici53

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Significant Accounting Policies [Line Items]
Changes in assumptions and experience gains and losses	Greater than 10%
Period of benefit obligation in current liabilities	Next twelve months
Research and develepment costs	$ 522	$ 460
Minimum [Member]
Significant Accounting Policies [Line Items]
Amortizable intangible assets, estimated useful life	4 years
Minimum [Member] | Building [Member]
Significant Accounting Policies [Line Items]
Annual rates of depreciation on fixed assets	2.50%
Minimum [Member] | General Purpose Equipment [Member]
Significant Accounting Policies [Line Items]
Annual rates of depreciation on fixed assets	7.00%
Minimum [Member] | Special Purpose Equipment [Member]
Significant Accounting Policies [Line Items]
Annual rates of depreciation on fixed assets	10.00%
Maximum [Member]
Significant Accounting Policies [Line Items]
Amortizable intangible assets, estimated useful life	15 years
Maximum [Member] | Building [Member]
Significant Accounting Policies [Line Items]
Annual rates of depreciation on fixed assets	5.00%
Maximum [Member] | General Purpose Equipment [Member]
Significant Accounting Policies [Line Items]
Annual rates of depreciation on fixed assets	10.00%
Maximum [Member] | Special Purpose Equipment [Member]
Significant Accounting Policies [Line Items]
Annual rates of depreciation on fixed assets	33.00%

Accounting Standards - Summary

Accounting Standards - Summary of Adopting New Standard on the Consolidated Statement of Cash flows (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncement, Early Adoption [Line Items]
Increase in changes in operating assets and liabilities	$ 232	$ 39
Decrease in cash provided from operating activities	3,329	3,266
Reduction in purchase of subsidiaries		1,810
Reduction in cash used for investing activities	(2,128)	(3,957)
Reduction in net decrease in cash, cash equivalents and restricted cash equivalents, during the period	(329)	(1,695)
Increase in cash, cash equivalents and restricted cash equivalents, end of period	$ 839	1,168	$ 2,863
Accounting Standards Update 2016-18 [Member] | Restatement Adjustment [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Increase in changes in operating assets and liabilities		(120)
Decrease in cash provided from operating activities		(120)
Reduction in purchase of subsidiaries		120
Reclassification of restricted cash deposits		194
Reduction in cash used for investing activities		314
Reduction in net decrease in cash, cash equivalents and restricted cash equivalents, during the period		194
Increase in cash, cash equivalents and restricted cash equivalents, end of period		$ 194

Accounting Standards - Addition

Accounting Standards - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncement, Early Adoption [Line Items]
Sales	$ 38,946	$ 36,445
Cost of goods sold	33,258	$ 31,123
Accounting Standards Update 2014-09 [Member] | Change In Accounting For Tooling And Pre-Production Engineering Activities [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Sales	(2,400)
Cost of goods sold	$ (2,400)

Other Expense, Net - Other Expe

Other Expense, Net - Other Expense, Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Components of Other Expense (Income), Net [Line Items]
Other expense, net	$ 39	$ 30
Impairment of investment	17	0
North America [Member]
Components of Other Expense (Income), Net [Line Items]
Restructuring charges	15
Pension settlement		13
Other expense, net	15	13
Europe [Member]
Components of Other Expense (Income), Net [Line Items]
Restructuring charges	14	17
Other expense, net	95	$ 17
Impairment of long-lived assets	64
Impairment of investment	17
Asia [Member]
Components of Other Expense (Income), Net [Line Items]
Gain on formation of a new venture	(45)
Corporate and Other [Member]
Components of Other Expense (Income), Net [Line Items]
Gain on sale of investment	$ (26)

Other Expense, Net - Other Ex57

Other Expense, Net - Other Expense, Net (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Components of Other Expense (Income), Net [Line Items]
Impairment of investment	$ 17	$ 0
North America [Member]
Components of Other Expense (Income), Net [Line Items]
Restructuring charges	15
Restructuring charges, after tax	11
Pension settlement		13
Pension settlement, after tax		9
Europe [Member]
Components of Other Expense (Income), Net [Line Items]
Restructuring charges	14	17
Restructuring charges, after tax	14	$ 17
Fixed asset impairment charges	64
Fixed asset impairment charges, after tax	64
Impairment of investment	17
Impairment of investment, after tax	17
Asia [Member]
Components of Other Expense (Income), Net [Line Items]
Gain on formation of new venture	45
Gain on formation of new venture, after tax	34
Corporate and Other [Member]
Components of Other Expense (Income), Net [Line Items]
Proceeds from sale of investment	33
Gain on sale of investment	26
Gain on sale of investment, after tax	$ 26

Earnings Per Share - Computatio

Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Basic earnings per Common Share:
Net income attributable to Magna International Inc.	$ 2,206	$ 2,031
Weighted average number of Common Shares outstanding during the year	371.8	391
Basic earnings per Common Share	$ 5.93	$ 5.19
Diluted earnings per Common Share:
Net income attributable to Magna International Inc.	$ 2,206	$ 2,031
Weighted average number of Common Shares outstanding during the year	371.8	391
Stock options and restricted stock	2.1	2.2
Diluted	373.9	393.2
Diluted earnings per Common Share	$ 5.90	$ 5.16

Earnings Per Share - Computat59

Earnings Per Share - Computation of Earnings Per Share (Parenthetical) (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Excluded Common Shares issuable under Company's Incentive Stock Option Plan	1.2	3.4

Details of Cash From Operatin60

Details of Cash From Operating Activities - Components of Cash, Cash Equivalents and Restricted Cash Equivalents (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Bank term deposits and bankers' acceptances	$ 234	$ 498
Cash	492	476
Cash and cash equivalents	726	974
Restricted cash equivalents included in prepaid expenses	113	194
Cash, cash equivalents and restricted cash equivalents	$ 839	$ 1,168	$ 2,863

Details of Cash From Operatin61

Details of Cash From Operating Activities - Details of Items Not Involving Current Cash Flows (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Depreciation and amortization	$ 1,173	$ 1,056
Amortization of other assets included in cost of goods sold	134	135
Impairment charges	81
Other non-cash charges	(2)	27
Deferred income taxes	(3)	22
Equity income in excess of dividends received	(6)	(9)
Non-cash portion of Other expense, net	(71)
Items not involving current cash flows	$ 1,306	$ 1,231

Details of Cash From Operatin62

Details of Cash From Operating Activities - Changes in Operating Assets and Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Accounts receivable	$ (297)	$ (446)
Inventories	(362)	(159)
Prepaid expenses and other	25	69
Accounts payable	494	562
Accrued salaries and wages	7	94
Other accrued liabilities	(46)	(145)
Income taxes payable	(53)	(14)
Changes in operating assets and liabilities	$ (232)	$ (39)

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Millions	Jan. 04, 2016	Dec. 31, 2016	Jun. 30, 2016
Business Acquisition [Line Items]
Net cash outflow		$ 1,810
Getrag Group Of Companies [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Net cash outflow		1,855
Cash acquired in business acquisition		136
Amortizable intangible assets, estimated useful life	15 years
Sales from acquired company		2,000
Net income from acquired company		$ 45
BOCO Group of Companies [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired		100.00%
Telemotive AG [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired			100.00%

Acquisitions - Summary of Amoun

Acquisitions - Summary of Amounts Recognized for Assets and Liabilities Acquired (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Net cash outflow	$ 1,810
Getrag Group Of Companies [Member]
Business Acquisition [Line Items]
Cash	136
Non-cash working capital	(395)
Investments	1,497
Fixed assets	445
Goodwill	590
Other assets	24
Intangibles	372
Deferred tax assets	34
Long-term employee benefit liabilities	(137)
Long-term debt	(117)
Other long-term liabilities	(52)
Deferred tax liabilities	(119)
Non-controlling interest	(287)
Consideration paid	1,991
Less: Cash acquired	(136)
Net cash outflow	$ 1,855

Equity Investments Acquired as

Equity Investments Acquired as Part of Business Combination (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Getrag Ford Transmission GmbH ["GFT"] [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%
Investment balance		$ 340
Getrag (Jiangxi) Transmission Co., Ltd [GJT] [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	66.70%	66.70%
Investment balance		$ 1,077
Dongfeng Getrag Transmission Co. Ltd ["DGT"] [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%
Investment balance		$ 80

Inventories - Inventories (Deta

Inventories - Inventories (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 1,254	$ 1,007
Work-in-process	331	264
Finished goods	433	327
Tooling and engineering	1,361	1,206
Inventory, net, total	$ 3,379	$ 2,804

Investments in Affiliated Com67

Investments in Affiliated Companies - Additional Information (Detail) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017USD ($)Business-Combination	Dec. 31, 2016USD ($)
Schedule of Equity Method Investments [Line Items]
Impairment charges for equity method investments		$ 17	$ 0
Sales to equity method investees		$ 284	214
Hubei Aviation Precision Machinery Co., Ltd [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from transfer of operations	$ 54
Hubei Aviation Precision Machinery Co., Ltd [Member] | Other Nonoperating Income (Expense) [Member]
Schedule of Equity Method Investments [Line Items]
Gain on deconsolidation of manufacturing operation	45
Gain on deconsolidation of manufacturing operation, after tax	$ 34
Corporate Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of ownership by company	49.90%	49.90%
Hubei Aviation Precision Machinery Co., Ltd [Member] | Corporate Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of ownership by other	50.10%	50.10%
Getrag Group Of Companies [Member]
Schedule of Equity Method Investments [Line Items]
Number of investees, determined as variable interest entities | Business-Combination		2
Variable interest entities, maximum exposure to any potential losses	$ 139	$ 139	$ 187

Ownership Percentages and Carry

Ownership Percentages and Carrying Value Principal Equity Method Investments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Litens Automotive Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	76.70%
Carrying value of equity method investments	$ 221	$ 173
Getrag (Jiangxi) Transmission Co., Ltd [GJT] [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	66.70%	66.70%
Carrying value of equity method investments	$ 1,161	$ 1,015
Getrag Ford Transmission GmbH ["GFT"] [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%
Carrying value of equity method investments	$ 334	$ 325
Dongfeng Getrag Transmission Co. Ltd ["DGT"] [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%	50.00%
Carrying value of equity method investments	$ 84	$ 79
Hubei Aviation Precision Machinery Co., Ltd [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	49.90%
Carrying value of equity method investments	$ 116

Investments - Company's Combine

Investments - Company's Combined Proportionate Share of Major Components of Financial Statements (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Current assets	$ 2,041	$ 2,478
Non-current assets	4,159	4,450
Current liabilities	1,516	2,329
Long-term liabilities	1,378	1,268
Sales	5,425	5,009
Cost of goods sold, expenses and income taxes	5,099	4,668
Net income	$ 326	$ 341

Carrying Amounts and Classifica

Carrying Amounts and Classification of Assets and Liabilities Included in Consolidated Balance Sheet Related to Consolidated VIE (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Current assets	$ 260	$ 256
Non-current assets	134	221
Total assets	394	477
Current liabilities	251	288
Non-current liabilities	4	2
Total liabilities	$ 255	$ 290

Fixed Assets - Components of Fi

Fixed Assets - Components of Fixed Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 16,774	$ 14,545
Property plant and equipment, net	8,141	7,022
Land [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	269	254
Building [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	2,232	1,942
Accumulated depreciation	(778)	(652)
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	14,273	12,349
Accumulated depreciation	$ (7,855)	$ (6,871)

Fixed Assets - Additional Infor

Fixed Assets - Additional Information (Detail) - USD ($) $ in Billions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Construction in progress expenditures	$ 1.4	$ 1

Goodwill - Goodwill by Segment

Goodwill - Goodwill by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill, Beginning balance	$ 1,923	$ 1,344
Acquisitions	1	615
Foreign exchange and other	175	(36)
Goodwill, Ending balance	2,099	1,923
North America [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	595	590
Foreign exchange and other	17	5
Goodwill, Ending balance	612	595
Europe [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	1,116	525
Acquisitions	1	620
Foreign exchange and other	147	(29)
Goodwill, Ending balance	1,264	1,116
Asia [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	212	229
Acquisitions		(5)
Foreign exchange and other	11	(12)
Goodwill, Ending balance	$ 223	$ 212

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Canadian statutory income tax rate	26.50%	26.50%
Manufacturing and processing profits deduction	(0.30%)	(0.30%)
Foreign rate differentials	(0.40%)	(0.20%)
Losses not benefited	1.60%	0.80%
Utilization of losses previously not benefited	(0.10%)	(0.20%)
Earnings of equity accounted investees	(1.40%)	(1.20%)
Tax on repatriation of foreign earnings	1.40%	0.70%
Valuation allowance on deferred tax assets	(0.10%)	(0.40%)
US tax reform	(0.80%)
Research and development tax credits	(1.20%)	(1.50%)
Reserve for uncertain tax positions	(0.20%)	0.20%
Non-deductible foreign exchange losses	0.30%	1.30%
Others	(0.50%)	(0.30%)
Effective income tax rate	24.80%	25.40%

Income Taxes - Summary of Inc75

Income Taxes - Summary of Income Tax Rate (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
US federal corporate tax rate		26.50%	26.50%
Provisional net reduction recognized in income tax expense		$ 23
Maximum [Member]
Income Tax Contingency [Line Items]
US federal corporate tax rate		35.00%
Scenario Plan [Member]
Income Tax Contingency [Line Items]
US federal corporate tax rate	21.00%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Reduction in deferred tax expense	$ 61
Increase in current income tax expense	38
Undistributed earnings of certain foreign subsidiaries	5,070
Income taxes paid, net	782	$ 707
Income tax loss carryforwards	2,600
Tax credit carryforwards	59
Total losses	1,870
Gross unrecognized tax benefits	243	220	$ 221
Recognized tax benefits	222	201
Interest and penalties on the unrecognized tax benefits	45	35
Recoveries/(expenses) related to changes in reserves for interest and penalties	10	$ 14
Decrease in gross unrecognized tax benefits	88
Decrease in recognized tax benefits	$ 77
Minimum [Member]
Income Taxes [Line Items]
Expiry date of losses	2,018
Maximum [Member]
Income Taxes [Line Items]
Expiry date of losses	2,037

Income Taxes - Details of Incom

Income Taxes - Details of Income before Income Taxes by Jurisdiction (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Canadian	$ 592	$ 617
Foreign	2,407	2,163
Income before income taxes, Total	$ 2,999	$ 2,780

Income Taxes - Details of Inc78

Income Taxes - Details of Income Tax Provision (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Canadian	$ 140	$ 127
Foreign	607	559
Current income tax, Total	747	686
Canadian	(7)	16
Foreign	4	4
Deferred income tax, Total	(3)	20
Income tax provision, Total	$ 744	$ 706

Income Taxes - Summary of Defer

Income Taxes - Summary of Deferred Income Taxes Provided on Temporary Differences (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax depreciation in excess of book depreciation	$ 62	$ 58
Tax amortization in excess of book amortization	10	2
Liabilities currently (not deductible) deductible for tax	(7)	5
Net tax losses benefited	(18)	(31)
Change in valuation allowance on deferred tax assets	(2)	(12)
Tax on undistributed foreign earnings	9	8
US tax reform	(61)
Others	4	(10)
Deferred income tax, Total	$ (3)	$ 20

Income Taxes - Summary of Def80

Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax benefit of loss carryforwards	$ 747	$ 715
Liabilities currently not deductible for tax	171	188
Tax credit carryforwards	59	22
Unrealized loss on cash flow hedges and retirement liabilities	75	134
Others	21	21
Deferred tax assets, Gross, Total	1,073	1,080
Valuation allowance against tax benefit of loss carryforwards	(629)	(615)
Other valuation allowance	(129)	(66)
Deferred tax assets, Net, Total	315	399
Tax depreciation in excess of book depreciation	212	266
Other assets book value in excess of tax values	60	57
Tax on undistributed foreign earnings	106	98
Unrealized gain on cash flow hedges and retirement liabilities	24	3
Deferred tax liabilities, Total	402	424
Net deferred tax liabilities	$ (87)	$ (25)

Income Taxes - Net Deferred Tax

Income Taxes - Net Deferred Tax Liabilities Presented on Consolidated Balance Sheet (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Long-term deferred tax assets	$ 236	$ 268
Long-term deferred tax liabilities	(323)	(293)
Net deferred tax liabilities	$ (87)	$ (25)

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Balance, beginning of year	$ 220	$ 221
Increase based on tax positions related to current year	21	21
Increase (decrease) based on tax positions of prior years	7	(52)
Increase related to acquisitions		44
Settlements	(2)	(2)
Statute expirations	(17)	(8)
Foreign currency translation	14	(4)
Balance, ending of year	$ 243	$ 220

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, cost	$ 1,128	$ 986
Intangible assets, net	$ 650	621
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated weighted average useful life in years	10 years
Intangible Assets, cost	$ 438	392
Intangible Assets, accumulated depreciation	$ (162)	(96)
Computer software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated weighted average useful life in years	3 years
Intangible Assets, cost	$ 348	316
Intangible Assets, accumulated depreciation	$ (263)	(242)
Patent And License [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated weighted average useful life in years	13 years
Intangible Assets, cost	$ 342	278
Intangible Assets, accumulated depreciation	$ (53)	$ (27)

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets, Net [Abstract]
Definite-lived intangible assets, amortization expense	$ 125	$ 100
Estimates annual amortization expense, 2018	124
Estimates annual amortization expense, 2019	91
Estimates annual amortization expense, 2020	72
Estimates annual amortization expense, 2021	62
Estimates annual amortization expense, 2022	$ 59

Other Assets - Summary of Other

Other Assets - Summary of Other Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Preproduction costs related to long-term supply agreements with contractual guarantee for reimbursement	$ 689	$ 420
Long-term receivables	180	229
Pension overfunded status	23	21
Unrealized gain on cash flow hedges	46	6
Other, net	21	43
Total other assets	$ 959	$ 719

Employee Equity and Profit Pa86

Employee Equity and Profit Participation Program - Additional Information (Detail) - Trust for Benefit of Employees [Member] - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount borrowed from company to purchase common shares maximum	$ 19,000,000	$ 10,000,000
Indebtedness receivable	$ 19,000,000	$ 10,000,000

Warranty - Schedule of Company'

Warranty - Schedule of Company's Warranty Accruals (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance, beginning of year	$ 270	$ 59
Expense, net	51	101
Settlements	(81)	(59)
Acquisitions		174
Foreign exchange and other	15	(5)
Balance, end of year	$ 255	$ 270

Warranty - Schedule of Compan88

Warranty - Schedule of Company's Warranty Accruals (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Product Warranty Liability [Line Items]
Acquisition balance relates to a pre-acquisition settlement agreement		$ 174
Pre-acquisition Settlement Agreement for Specific Performance [Member]
Product Warranty Liability [Line Items]
Acquisition balance relates to a pre-acquisition settlement agreement	$ 127	$ 127

Debt - Short Term Borrowings (D

Debt - Short Term Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Short term borrowings	$ 259	$ 623
Bank Indebtedness [Member]
Short-term Debt [Line Items]
Short term borrowings	9	8
Commercial Paper [Member]
Short-term Debt [Line Items]
Short term borrowings	$ 250	$ 615

Debt - Short Term Borrowings (P

Debt - Short Term Borrowings (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2016EUR (€)	Dec. 31, 2016USD ($)
Short-term Debt [Line Items]
Net cash deposit			$ 113,000,000		$ 194,000,000
Maximum borrowing capacity			2,750,000,000
Short-term borrowings			259,000,000		623,000,000
Bank Indebtedness [Member]
Short-term Debt [Line Items]
Covenant percentage USD cash deposit to outstanding euro balance	105.00%
Gross amount outstanding under the credit facility		€ 90,000,000	108,000,000	€ 175,000,000	185,000,000
Increase in restricted cash deposits	$ 113,000,000
Short-term borrowings			9,000,000		8,000,000
U.S. Commercial Paper Notes [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity			500,000,000
Short-term borrowings			$ 70,000,000		$ 295,000,000
Weighted-average interest rate on notes outstanding		1.84%	1.84%	1.04%	1.04%
Debt maturity period	Maturities less than three months.
Euro-Commercial Paper Notes [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity | €		€ 500,000,000
Short-term borrowings		€ 150,000,000	$ 180,000,000	€ 304,000,000	$ 320,000,000
Weighted-average interest rate on notes outstanding		(0.22%)	(0.22%)	(0.07%)	(0.07%)
Debt maturity period	Maturities less than three months.
Debt issuance description	Under the euro-Program, the Company may issue euro-commercial paper notes [the “euro notes”] up to a maximum aggregate amount of €500 million or its equivalent in alternative currencies.
Prepaid Expenses and Other [Member] | Bank Indebtedness [Member]
Short-term Debt [Line Items]
Net cash deposit			$ 5,000,000		$ 9,000,000

Debt - Schedule of Company's Lo

Debt - Schedule of Company's Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total long-term debt	$ 3,303	$ 2,533
Less due within one year	108	139
Total long term non current debt	3,195	2,394
Three Point Six Two Five Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	746	746
Four Point One Five Zero Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	643	643
One Point Nine Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	657	576
One Point Five Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	717
Three Point One Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	338	315
Bank Term Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	99	117
Government Loans [Member]
Debt Instrument [Line Items]
Total long-term debt	84	92
Other Long Term Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 19	$ 44

Debt - Schedule of Company's 92

Debt - Schedule of Company's Long-Term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2017CAD ($)	Sep. 25, 2017EUR (€)	Dec. 31, 2016
Three Point Six Two Five Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, face amount		$ 750,000,000
Senior Notes, due year	2,024
Interest rate	3.625%	3.625%	3.625%
Four Point One Five Zero Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, face amount		$ 650,000,000
Senior Notes, due year	2,025
Interest rate	4.15%	4.15%	4.15%
One Point Nine Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, face amount | €	€ 550,000,000
Senior Notes, due year	2,023
Interest rate	1.90%	1.90%	1.90%
One Point Five Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, face amount | €	€ 600,000,000			€ 600,000,000
Senior Notes, due year	2,027
Interest rate	1.50%	1.50%	1.50%	1.50%
Three Point One Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, face amount			$ 425,000,000
Senior Notes, due year	2,022
Interest rate	3.10%	3.10%	3.10%
Bank Term Debt [Member]
Debt Instrument [Line Items]
Weighted average interest rate of bank term debt	5.68%	5.68%	5.68%		7.30%
Government Loans [Member]
Debt Instrument [Line Items]
Weighted average interest rate of bank term debt	1.73%	1.73%	1.73%		2.53%

Debt - Schedule of Future Princ

Debt - Schedule of Future Principal Repayments on Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2,018	$ 108
2,019	32
2,020	28
2,021	25
2,022	342
Thereafter	2,768
Total long-term debt	$ 3,303	$ 2,533

Debt - Additional Information (

Debt - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Sep. 25, 2017EUR (€)
Debt Instrument [Line Items]
Borrowings under revolving credit facility				$ 2,750,000,000
Revolving credit facility maturity date	Jun. 22, 2022
Interest paid in cash	$ 88,000,000	$ 99,000,000
Operating lease expense	$ 344,000,000	$ 314,000,000
One Point Nine Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, face amount | €			€ 550,000,000
Interest rate			1.90%	1.90%
Asian Tranche [Member]
Debt Instrument [Line Items]
Line of credit facility fully transferable amount				$ 200,000,000
Mexican Tranche [Member]
Debt Instrument [Line Items]
Line of credit facility fully transferable amount				$ 100,000,000
One Point Five Zero Zero Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes, issued date	Sep. 25, 2017
Senior Notes, face amount | €			€ 600,000,000		€ 600,000,000
Interest rate			1.50%	1.50%	1.50%
Senior Notes, maturity date	Sep. 25, 2027
Senior Notes, interest payable term	Interest is payable on September 25th of each year.

Debt - Interest Expense, Net (D

Debt - Interest Expense, Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Interest expense
Current	$ 10	$ 22
Long-term	80	78
Interest Expense, Total	90	100
Interest income	(20)	(12)
Interest expense, net	$ 70	$ 88

Debt - Company's Commitments un

Debt - Company's Commitments under Operating Leases Requiring Annual Rental Payments (Detail) $ in Millions	Dec. 31, 2017USD ($)
Leases [Abstract]
2,018	$ 316
2,019	272
2,020	239
2,021	212
2,022	189
Thereafter	769
Operating Leases, Future Minimum Payments Due, Total	$ 1,997

Long-Term Employee Benefit Li97

Long-Term Employee Benefit Liabilities - Long-Term Employee Benefit Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Defined benefit pension plans and other	$ 264	$ 313
Termination and long service arrangements	368	319
Retirement medical benefits plans	31	29
Other long-term employee benefits	7	6
Long-term employee benefit obligations	$ 670	$ 667

Long-Term Employee Benefit Li98

Long-Term Employee Benefit Liabilities - Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost (Detail) - Pension Plan, Defined Benefit [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.90%	3.10%
Rate of compensation increase	2.60%	2.30%
Net periodic benefit cost Discount rate	3.10%	3.20%
Rate of compensation increase	2.50%	2.40%
Expected return on plan assets	5.80%	5.80%

Long-Term Employee Benefit Li99

Long-Term Employee Benefit Liabilities - Schedule of Company's Defined Benefit Pension Plans (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Non-current asset	$ (23)	$ (21)
Non-current liability	670	667
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning of year	624	493
Current service cost	13	14
Interest cost	18	21
Actuarial losses and changes in actuarial assumptions	8	28
Benefits paid	(23)	(22)
Benefits paid - settlements		(32)
Acquisition		129
Gain on settlement		(5)
Foreign exchange	47	(2)
End of year	687	624
Beginning of year	330	326
Return on plan assets	33	22
Employer contributions	82	19
Benefits paid	(18)	(17)
Benefits paid - settlements		(32)
Acquisition		8
Foreign exchange	16	4
End of year	443	330
Ending funded status	244	294
Non-current asset	(23)	(21)
Current liability	3	2
Non-current liability	264	313
Net amount	244	294
Unrecognized actuarial losses	(135)	(144)
Current service cost	13	14
Interest cost	18	21
Return on plan assets	(20)	(20)
Benefits paid - settlements		13
Actuarial losses	4	3
Net periodic benefit cost	$ 15	$ 31

Long-Term Employee Benefit L100

Long-Term Employee Benefit Liabilities - Schedule of Company's Defined Benefit Pension Plans (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension, non cash settlement			$ 13
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		$ 82	19
Defined benefit pension plan assets, settlement			$ 32
Target allocation in 2018	100.00%	100.00%
Asset allocation of defined benefit pension plans	100.00%	100.00%
U.S. Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 60
Equity Investments [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation of defined benefit pension plans	50.00%	50.00%
Equity Investments [Member] | Pension Plan, Defined Benefit [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation in 2018	55.00%	55.00%
Equity Investments [Member] | Pension Plan, Defined Benefit [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation in 2018	75.00%	75.00%
Fixed Income Securities [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation of defined benefit pension plans	35.00%	35.00%
Fixed Income Securities [Member] | Pension Plan, Defined Benefit [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation in 2018	25.00%	25.00%
Fixed Income Securities [Member] | Pension Plan, Defined Benefit [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation in 2018	45.00%	45.00%
Cash and Cash Equivalents [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation of defined benefit pension plans	15.00%	15.00%
Cash and Cash Equivalents [Member] | Pension Plan, Defined Benefit [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation in 2018	0.00%	0.00%
Cash and Cash Equivalents [Member] | Pension Plan, Defined Benefit [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation in 2018	15.00%	15.00%

Long-Term Employee Benefit L101

Long-Term Employee Benefit Liabilities - Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Projected Termination and Long Service Benefit Obligations and Net Periodic Benefit Cost (Detail) - Termination and Long Service Arrangements [Member]	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.60%	2.90%
Rate of compensation increase	2.60%	2.70%

Long-Term Employee Benefit L102

Long-Term Employee Benefit Liabilities - Company's Termination and Long Service Arrangements (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Non-current liability	$ 670	$ 667
Termination and Long Service Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning of year	327	295
Current service cost	20	20
Interest cost	7	8
Actuarial losses (gains) and changes in actuarial assumptions	(7)	15
Benefits paid	(11)	(11)
Acquisition		16
Foreign exchange	42	(16)
Ending funded status	378	327
Current liability	10	8
Non-current liability	368	319
Net amount	378	327
Unrecognized actuarial losses	(73)	(84)
Current service cost	20	20
Interest cost	7	8
Actuarial losses	3	1
Net periodic benefit cost	$ 30	$ 29

Long-Term Employee Benefit L103

Long-Term Employee Benefit Liabilities - Summary of Weighted Average Discount Rates Used in Measuring Company's Projected Retirement Medical Benefit Obligations and Net Periodic Benefit Cost (Detail) - Retirement Medical Benefits Plans [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Retirement medical benefit obligations	3.40%	3.80%
Net periodic benefit cost	3.80%	3.90%
Health care cost inflation	6.60%	7.00%

Long-Term Employee Benefit L104

Long-Term Employee Benefit Liabilities - Company's Retirement Medical Benefits Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Non-current liability	$ 670	$ 667
Retirement Medical Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning of year	31	32
Interest cost	1	1
Actuarial losses (gains) and changes in actuarial assumptions	2	(1)
Benefits paid	(2)	(1)
Foreign exchange	1
Ending funded status	33	31
Current liability	2	2
Non-current liability	31	29
Net amount	33	31
Unrecognized past service costs	1	1
Unrecognized actuarial gains	8	11
Total accumulated other comprehensive income	9	12
Actuarial gains	(1)	(1)
Net periodic benefit cost	0	0
Retirement Medical Benefits Plans [Member] | Net Periodic Benefit Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 1	$ 1

Long-Term Employee Benefit L105

Long-Term Employee Benefit Liabilities - Future Benefit Payments (Detail) $ in Millions	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2018	$ 31
2,018	35
2,019	36
2,020	40
2,021	42
2,022	46
Thereafter	251
Total	450
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2018	19
2,018	23
2,019	23
2,020	24
2,021	25
2,022	26
Thereafter	143
Total	264
Termination and Long Service Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2018	10
2,018	10
2,019	11
2,020	14
2,021	15
2,022	18
Thereafter	99
Total	167
Retirement Medical Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions - 2018	2
2,018	2
2,019	2
2,020	2
2,021	2
2,022	2
Thereafter	9
Total	$ 19

Other Long-Term Liabilities - P

Other Long-Term Liabilities - Particulars of Other Long-Term Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Long-term portion of fair value of hedges	$ 17	$ 61
Long-term portion of income taxes payable	225	181
Asset retirement obligation	34	28
Long-term lease inducements	15	16
Deferred revenue	13	12
Total	$ 304	$ 298

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail)	Nov. 13, 2017shares	Dec. 31, 2017Voteshares
Equity [Abstract]
Preference shares included in authorized capital stock		99,760,000
Shares issued or outstanding		0
Number of votes per share | Vote		1
Number of common stock shares to be purchased under the Bid	35,800,000
Percentage of issued and outstanding common shares	10.00%
Commencement date of Bid		Nov. 15, 2017
Termination date of Bid		Nov. 14, 2018

Capital Stock - Summary of Norm

Capital Stock - Summary of Normal Course Issuer Bids (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Share Repurchase Programs [Line Items]
Shares purchased	26,257,043	22,335,018
Cash amount	$ 1,271	$ 904
2015 Bid [Member]
Schedule Of Share Repurchase Programs [Line Items]
Maximum number of shares	40,000,000
Shares purchased		20,313,194
Cash amount		$ 818
2016 Bid [Member]
Schedule Of Share Repurchase Programs [Line Items]
Maximum number of shares	38,000,000
Shares purchased	23,245,377	2,021,824
Cash amount	$ 1,109	$ 86
2017 Bid [Member]
Schedule Of Share Repurchase Programs [Line Items]
Maximum number of shares	35,800,000
Shares purchased	3,011,666
Cash amount	$ 162

Capital Stock - Maximum Number

Capital Stock - Maximum Number of Shares Outstanding Exercised or Converted (Detail) - Convertible Common Stock [Member] - Subsequent Event [Member]	Mar. 06, 2018shares
Class of Stock [Line Items]
Common Shares	358,395,997
Stock options	7,661,769
Total number of shares outstanding	366,057,766

Accumulated Other Comprehens110

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		$ (1,451)
Net unrealized gain (loss)		114	$ 1
Ending Balance		(597)	(1,451)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(1,131)	(1,042)
Net unrealized gain (loss)		657	(109)
Repurchase of shares under normal course issuer bids [note 19]		21	20
Ending Balance		(453)	(1,131)
Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(135)	(262)
Net unrealized gain (loss)		114	1
Reclassification of net loss to net income		60	126
Ending Balance		39	(135)
Accumulated Net Unrealized Loss On Other Long Term Liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(185)	(165)
Net unrealized gain (loss)		8	(29)
Reclassification of net loss to net income		5	9
Reclassification of tax effect to retained earnings		(11)
Ending Balance		(183)	(185)
Accumulated Net Unrealized Loss on Available-for-Sale investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(1)
Reclassification of net loss to net income			1
AOCL [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(1,451)
Reclassification of tax effect to retained earnings	[1]	(11)
Ending Balance		$ (597)	$ (1,451)
[1]	AOCL is Accumulated Other Comprehensive Loss.

Accumulated Other Comprehens111

Accumulated Other Comprehensive Loss - Schedule of Net Income Amounts Reclassified from AOCL (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales	$ (38,946)	$ (36,445)
Cost of sales	33,258	31,123
Income tax	744	706
Net of tax	(2,206)	(2,031)
Total loss reclassified to net income	(65)	(135)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales	(30)	(87)
Cost of sales	(54)	(87)
Income tax	24	48
Net of tax	(60)	(126)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Loss On Other Long Term Liabilities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	(6)	(13)
Income tax	1	4
Net of tax	$ (5)	$ (9)

Accumulated Other Comprehens112

Accumulated Other Comprehensive Loss - Summary of Income Tax Benefit (Expense) to Component of Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of year	$ 83
Balance, end of year	12	$ 83
Accumulated Net (Loss) Gain from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of year	53	97
Net unrealized (gain) loss	(41)	4
Reclassification of net loss to net income	(24)	(48)
Balance, end of year	(12)	53
Accumulated Net Unrealized Loss On Other Long Term Liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of year	30	31
Net unrealized (gain) loss	(1)	3
Reclassification of net loss to net income	(1)	(4)
Reclassification of tax effect to retained earnings	(11)
Balance, end of year	17	$ 30
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized (gain) loss	7
Balance, end of year	$ 7

Accumulated Other Comprehens113

Accumulated Other Comprehensive Loss - Additional Information (Detail) $ in Millions	Dec. 31, 2018USD ($)
Scenario, Forecast [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of comprehensive loss that is expected to be reclassified to net income	$ 21

Financial Instruments - Foreign

Financial Instruments - Foreign Exchange Forward Contracts Representing Commitments to Buy and Sell Various Foreign Currencies (Detail)	12 Months Ended
	Dec. 31, 2017EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2017GBP (£)	Dec. 31, 2017CZK (Kč)	Dec. 31, 2016USD ($)
Derivative [Line Items]
Assets, Gross amounts presented in consolidated balance sheets		$ 101,000,000			$ 18,000,000
Canada, Dollars | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives | €	€ 10,000,000
Canada, Dollars | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		1,732,000,000
Canada, Dollars | 2018 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.27249
Foreign exchange forward contract, Sales Exchange Rate	0.78027
Canada, Dollars | 2018 [Member] | Euro [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.48899
Foreign exchange forward contract, Sales Exchange Rate	0.66174
Canada, Dollars | 2018 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives	€ 22,000,000	208,000,000
Canada, Dollars | 2018 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives	€ 16,000,000	980,000,000
Canada, Dollars | 2019 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.29098
Foreign exchange forward contract, Sales Exchange Rate	0.77989
Canada, Dollars | 2019 [Member] | Euro [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.56845
Foreign exchange forward contract, Sales Exchange Rate	0.64926
Canada, Dollars | 2019 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives	€ 9,000,000	41,000,000
Canada, Dollars | 2019 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives	€ 5,000,000	596,000,000
Canada, Dollars | 2020 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.29947
Foreign exchange forward contract, Sales Exchange Rate	0.77338
Canada, Dollars | 2020 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		9,000,000
Canada, Dollars | 2020 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		291,000,000
Canada, Dollars | 2021 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Sales Exchange Rate	0.78321
Canada, Dollars | 2021 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		97,000,000
Canada, Dollars | 2022 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Sales Exchange Rate	0.78978
Canada, Dollars | 2022 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		26,000,000
United States of America, Dollars | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		6,109,000,000
United States of America, Dollars | 2018 [Member] | Mexican Peso [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.05170
United States of America, Dollars | 2018 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		3,778,000,000
United States of America, Dollars | 2019 [Member] | Mexican Peso [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.04678
United States of America, Dollars | 2019 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		1,755,000,000
United States of America, Dollars | 2020 [Member] | Mexican Peso [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.04684
United States of America, Dollars | 2020 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		576,000,000
Euro Member Countries, Euro | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives | Kč				Kč 8,100,000,000
Euro Member Countries, Euro | Short [Member]
Derivative [Line Items]
Assets, Gross amounts presented in consolidated balance sheets		(63,000,000)	£ (49,000,000)
Euro Member Countries, Euro | 2018 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.86349
Foreign exchange forward contract, Sales Exchange Rate	1.17146
Euro Member Countries, Euro | 2018 [Member] | British Pound [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.11963
Foreign exchange forward contract, Sales Exchange Rate	0.83230
Euro Member Countries, Euro | 2018 [Member] | Czech Koruna [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.03791
Foreign exchange forward contract, Sales Exchange Rate	25.46600
Euro Member Countries, Euro | 2018 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		104,000,000	7,000,000	4,128,000,000
Euro Member Countries, Euro | 2018 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		130,000,000	28,000,000	14,000,000
Euro Member Countries, Euro | 2019 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.86276
Foreign exchange forward contract, Sales Exchange Rate	1.18414
Euro Member Countries, Euro | 2019 [Member] | British Pound [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	1.11072
Foreign exchange forward contract, Sales Exchange Rate	0.83346
Euro Member Countries, Euro | 2019 [Member] | Czech Koruna [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.03799
Euro Member Countries, Euro | 2019 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		37,000,000	1,000,000	2,885,000,000
Euro Member Countries, Euro | 2019 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		68,000,000	14,000,000
Euro Member Countries, Euro | 2020 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.85860
Foreign exchange forward contract, Sales Exchange Rate	1.22742
Euro Member Countries, Euro | 2020 [Member] | British Pound [Member]
Derivative [Line Items]
Foreign exchange forward contract, Sales Exchange Rate	0.88220
Euro Member Countries, Euro | 2020 [Member] | Czech Koruna [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.03851
Euro Member Countries, Euro | 2020 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		14,000,000		Kč 1,101,000,000
Euro Member Countries, Euro | 2020 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		16,000,000	9,000,000
Euro Member Countries, Euro | 2021 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.82532
Foreign exchange forward contract, Sales Exchange Rate	1.29394
Euro Member Countries, Euro | 2021 [Member] | British Pound [Member]
Derivative [Line Items]
Foreign exchange forward contract, Sales Exchange Rate	0.92098
Euro Member Countries, Euro | 2021 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		7,000,000
Euro Member Countries, Euro | 2021 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		11,000,000	£ 6,000,000
Euro Member Countries, Euro | 2022 [Member] | US Dollar [Member]
Derivative [Line Items]
Foreign exchange forward contract, Purchases Exchange Rate	0.75974
Foreign exchange forward contract, Sales Exchange Rate	1.31155
Euro Member Countries, Euro | 2022 [Member] | Long [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		1,000,000
Euro Member Countries, Euro | 2022 [Member] | Short [Member]
Derivative [Line Items]
Notional amount of foreign currency derivatives		$ 1,000,000

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)Customer	Dec. 31, 2016USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt due within one year	$ 108	$ 139
Debt instrument maturity period	1 year
Book value of senior notes	$ 3,120
Sales Revenue, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of largest customers | Customer	6
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of sales to six largest customers	81.00%	82.00%
Fair Value, Inputs, Level 1 [Member] | Senior Notes [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Estimated fair value of notes payable	$ 3,270
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange forward contracts, gain recognized in other comprehensive loss	101
Foreign exchange forward contracts, loss recognized in other comprehensive loss	$ 49

Financial Instruments - Schedul

Financial Instruments - Schedule of Company's Financial Assets and Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financial assets
Cash and cash equivalents	$ 726	$ 974
Restricted cash equivalents	113	194
Investment in ABCP		60
Accounts receivable	6,878	6,165
Severance investments	4	3
Long-term receivables included in other assets [note 13]	180	229
Total	7,901	7,625
Financial liabilities
Bank indebtedness [note 16]	259	623
Long-term debt (including portion due within one year)	3,303	2,533
Accounts payable	6,299	5,430
Other Liabilities, Total	9,861	8,586
Other assets	101	18
Other accrued liabilities	(49)	(195)
Liabilities, Net Amounts	(2)	(178)
Foreign Exchange Contract [Member]
Financial liabilities
Liabilities, Net Amounts	52	(177)
Prepaid Expenses and Other [Member] | Foreign Exchange Contract [Member]
Financial liabilities
Other assets	55	12
Other Assets [Member] | Foreign Exchange Contract [Member]
Financial liabilities
Other assets	46	6
Other Accrued Liabilities [Member] | Foreign Exchange Contract [Member]
Financial liabilities
Other accrued liabilities	(32)	(134)
Other Long-term Liabilities [Member] | Foreign Exchange Contract [Member]
Financial liabilities
Other accrued liabilities	(17)	(61)
Bank Indebtedness [Member]
Financial liabilities
Bank indebtedness [note 16]	9	8
Commercial Paper [Member]
Financial liabilities
Bank indebtedness [note 16]	$ 250	$ 615

Financial Instruments - Derivat

Financial Instruments - Derivative Foreign Currency Contracts at Gross Fair Value and Unrecognized Impacts of Master Netting Arrangements (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Offsetting [Abstract]
Assets, Gross amounts presented in consolidated balance sheets	$ 101	$ 18
Assets, Gross amounts not offset in consolidated balance sheets	47	17
Assets, Net amounts	54	1
Liabilities, Gross amounts presented in Consolidated Balance Sheets	(49)	(195)
Liabilities, Gross amounts not offset in Consolidated Balance Sheets	(47)	(17)
Liabilities, Net Amounts	$ (2)	$ (178)

Segmented Information - Additio

Segmented Information - Additional Information (Detail)	Dec. 31, 2017Market
Segment Reporting [Abstract]
Number of primary markets	2

Segmented Information - Schedul

Segmented Information - Schedule of Segment Information for Reporting Segments and a Reconciliation for Adjusted EBIT to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 1,173	$ 1,056
Adjusted EBIT	3,108	2,898
Goodwill	2,099	1,923	$ 1,344
Fixed assets, net	8,141	7,022
Current assets	11,220	10,163
Investments, intangible assets, goodwill, deferred tax assets and other assets	6,032	5,381
Consolidated total assets	25,393	22,566
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	38,946	36,445
External sales	38,946	36,445
Depreciation and amortization	1,173	1,056
Adjusted EBIT	3,108	2,898
Goodwill	2,099	1,923
Fixed asset additions	1,858	1,807
Fixed assets, net	8,141	7,022
North America [Member]
Segment Reporting Information [Line Items]
Goodwill	612	595	590
North America [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	20,905	20,744
External sales	20,824	20,657
Depreciation and amortization	549	486
Adjusted EBIT	2,064	2,061
Goodwill	612	595
Fixed asset additions	810	910
Fixed assets, net	3,560	3,293
North America [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	(1,477)	(1,387)
North America [Member] | Canada [Member] | Reportable Subsegments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	6,888	6,784
External sales	6,215	6,214
Fixed asset additions	268	201
Fixed assets, net	883	721
North America [Member] | United States [Member] | Reportable Subsegments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	9,989	10,226
External sales	9,742	9,857
Fixed asset additions	301	400
Fixed assets, net	1,593	1,573
North America [Member] | Mexico [Member] | Reportable Subsegments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	5,505	5,121
External sales	4,867	4,586
Fixed asset additions	241	309
Fixed assets, net	1,084	999
Europe [Member]
Segment Reporting Information [Line Items]
Goodwill	1,264	1,116	525
Europe [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	15,177	13,080
External sales	14,923	12,815
Depreciation and amortization	478	431
Adjusted EBIT	596	543
Goodwill	1,264	1,116
Fixed asset additions	858	738
Fixed assets, net	3,333	2,584
Europe [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	(465)	(400)
Europe [Member] | Western Europe Excluding Great Britain [Member] | Reportable Subsegments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	12,371	10,537
External sales	11,949	10,159
Fixed asset additions	624	578
Fixed assets, net	2,443	1,912
Europe [Member] | Great Britain [Member] | Reportable Subsegments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	597	658
External sales	595	656
Fixed asset additions	35	24
Fixed assets, net	162	127
Europe [Member] | Eastern Europe [Member] | Reportable Subsegments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	2,674	2,285
External sales	2,379	2,000
Fixed asset additions	199	136
Fixed assets, net	728	545
Asia [Member]
Segment Reporting Information [Line Items]
Goodwill	223	212	$ 229
Asia [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	2,791	2,674
External sales	2,608	2,502
Depreciation and amortization	106	103
Adjusted EBIT	366	266
Goodwill	223	212
Fixed asset additions	117	97
Fixed assets, net	726	679
Rest of World [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	584	465
External sales	583	464
Depreciation and amortization	13	13
Adjusted EBIT	12	(17)
Fixed asset additions	8	11
Fixed assets, net	57	62
Corporate and Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total sales	(511)	(518)
External sales	8	7
Depreciation and amortization	27	23
Adjusted EBIT	70	45
Fixed asset additions	65	51
Fixed assets, net	$ 465	$ 404

Segmented Information - Sche120

Segmented Information - Schedule of Segment Information for Reporting Segments and a Reconciliation for Adjusted EBIT to Consolidated Income Before Income Taxes (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Net Income from operations	$ 2,255	$ 2,074
Add (deduct):
Interest expense, net	70	88
Other expense, net	39	30
Income taxes	744	706
Adjusted EBIT	$ 3,108	$ 2,898

Segmented Information - Sche121

Segmented Information - Schedule of Aggregates External Revenues by Customer (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Revenue from External Customer [Line Items]
Sales	$ 38,946	$ 36,445
General Motors [Member]
Revenue from External Customer [Line Items]
Sales	6,854	7,207
Ford Motor Company [Member]
Revenue from External Customer [Line Items]
Sales	6,058	5,667
Fiat or Chrysler Group [Member]
Revenue from External Customer [Line Items]
Sales	5,502	5,349
Daimler AG [Member]
Revenue from External Customer [Line Items]
Sales	4,719	4,294
BMW [Member]
Revenue from External Customer [Line Items]
Sales	4,231	3,786
Volkswagen [Member]
Revenue from External Customer [Line Items]
Sales	4,025	3,758
Other Customers [Member]
Revenue from External Customer [Line Items]
Sales	$ 7,557	$ 6,384

Segmented Information - Summary

Segmented Information - Summary of External Revenues by Automotive Products and Services (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sales	$ 38,946	$ 36,445
Body Systems and Chassis Systems [Member]
Segment Reporting Information [Line Items]
Sales	9,744	9,157
Powertrain Systems [Member]
Segment Reporting Information [Line Items]
Sales	6,773	6,489
Exterior Systems [Member]
Segment Reporting Information [Line Items]
Sales	5,325	5,272
Seating Systems [Member]
Segment Reporting Information [Line Items]
Sales	5,203	5,079
Tooling, Engineering and Other [Member]
Segment Reporting Information [Line Items]
Sales	3,397	3,078
Complete Vehicle Assembly [Member]
Segment Reporting Information [Line Items]
Sales	2,944	2,190
Vision and Electronic Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,891	2,768
Closure Systems [Member]
Segment Reporting Information [Line Items]
Sales	$ 2,669	$ 2,412