CBRE (CBRE) 10-Q 29 Oct 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 20, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Trading Symbol	CBRE
Entity Registrant Name	CBRE GROUP, INC.
Entity Central Index Key	0001138118
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		335,456,246
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity File Number	001-32205
Entity Tax Identification Number	94-3391143
Entity Address, Address Line One	2100 McKinney Avenue
Entity Address, Address Line Two	12th Floor
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	214
Local Phone Number	979-6100
Entity Interactive Data Current	Yes
Title of 12(b) Security	Class A Common Stock, $0.01 par value per share
Security Exchange Name	NYSE
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 1,481,924	$ 971,781
Restricted cash	164,633	121,964
Receivables, less allowance for doubtful accounts of $111,777 and $72,725 at September 30, 2020 and December 31, 2019, respectively	3,997,998	4,466,674
Warehouse receivables	1,211,886	993,058
Prepaid expenses	284,947	282,741
Contract assets	282,031	328,012
Income taxes receivable	62,736	93,915
Other current assets	285,220	276,319
Total Current Assets	7,771,375	7,534,464
Property and equipment, net	818,333	836,206
Goodwill	3,744,269	3,753,493
Other intangible assets, net of accumulated amortization of $1,496,563 and $1,358,528 at September 30, 2020 and December 31, 2019, respectively	1,333,917	1,379,546
Operating lease assets	1,057,992	997,966
Investments in unconsolidated subsidiaries	392,569	426,711
Real estate under development	228,038	185,508
Non-current contract assets	177,801	201,760
Deferred tax assets, net	95,380	73,864
Non-current income taxes receivable	39,467	139,136
Other assets, net	687,935	668,542
Total Assets	16,347,076	16,197,196
Current Liabilities:
Accounts payable and accrued expenses	2,428,845	2,436,084
Compensation and employee benefits payable	1,222,607	1,324,990
Accrued bonus and profit sharing	808,353	1,261,974
Operating lease liabilities	189,641	168,663
Contract liabilities	132,499	108,671
Income taxes payable	50,965	30,207
Short-term borrowings:
Warehouse lines of credit (which fund loans that U.S. Government Sponsored Enterprises have committed to purchase)	1,191,834	977,175
Other	5,028	4,534
Total short-term borrowings	1,196,862	981,709
Current maturities of long-term debt	1,526	1,814
Other current liabilities	120,974	122,339
Total Current Liabilities	6,152,272	6,436,451
Long-term debt, net of current maturities	1,783,212	1,761,245
Non-current operating lease liabilities	1,125,005	1,057,758
Non-current tax liabilities	84,633	85,966
Deferred tax liabilities, net	71,892	34,593
Non-current income taxes payable	40,562	93,647
Other liabilities	495,198	454,424
Total Liabilities	9,752,774	9,924,084
Commitments and contingencies
CBRE Group, Inc. Stockholders’ Equity:
Class A common stock; $0.01 par value; 525,000,000 shares authorized; 335,438,893 and 334,752,283 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	3,354	3,348
Additional paid-in capital	1,064,849	1,115,944
Accumulated earnings	6,216,292	5,793,149
Accumulated other comprehensive loss	(731,399)	(679,748)
Total CBRE Group, Inc. Stockholders’ Equity	6,553,096	6,232,693
Non-controlling interests	41,206	40,419
Total Equity	6,594,302	6,273,112
Total Liabilities and Equity	$ 16,347,076	$ 16,197,196

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 111,777	$ 72,725
Other intangible assets, accumulated amortization	$ 1,496,563	$ 1,358,528
Class A common stock, par value	$ 0.01	$ 0.01
Class A common stock, shares authorized	525,000,000	525,000,000
Class A common stock, shares issued	335,438,893	334,752,283
Class A common stock, shares outstanding	335,438,893	334,752,283

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenue	$ 5,645,142	$ 5,925,101	$ 16,915,694	$ 16,774,684
Costs and expenses:
Cost of revenue	4,564,579	4,687,336	13,676,790	13,155,160
Operating, administrative and other	794,227	809,584	2,355,099	2,479,857
Depreciation and amortization	127,725	111,560	357,903	323,862
Asset impairments			75,171	89,037
Total costs and expenses	5,486,531	5,608,480	16,464,963	16,047,916
Gain on disposition of real estate	52,797	9	75,132	19,266
Operating income	211,408	316,630	525,863	746,034
Equity income from unconsolidated subsidiaries	32,376	25,796	72,487	120,233
Other income	7,947	941	12,974	26,163
Interest expense, net of interest income	17,829	21,846	51,795	67,638
Write-off of financing costs on extinguished debt				2,608
Income before provision for income taxes	233,902	321,521	559,529	822,184
Provision for income taxes	49,062	63,468	119,047	169,867
Net income	184,840	258,053	440,482	652,317
Less: Net income attributable to non-controlling interests	708	1,454	2,258	7,578
Net income attributable to CBRE Group, Inc.	$ 184,132	$ 256,599	$ 438,224	$ 644,739
Basic income per share:
Net income per share attributable to CBRE Group, Inc.	$ 0.55	$ 0.76	$ 1.31	$ 1.92
Weighted average shares outstanding for basic income per share	335,287,245	336,203,747	335,128,531	336,149,719
Diluted income per share:
Net income per share attributable to CBRE Group, Inc.	$ 0.55	$ 0.75	$ 1.30	$ 1.89
Weighted average shares outstanding for diluted income per share	337,665,848	341,100,182	338,255,859	340,590,007

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 184,840	$ 258,053	$ 440,482	$ 652,317
Other comprehensive income (loss):
Foreign currency translation gain (loss)	106,201	(78,177)	(40,237)	(79,772)
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax	106	377	320	1,212
Unrealized gains (losses) on interest rate swaps, net of tax		7		(104)
Unrealized holding gains on available for sale debt securities, net of tax	811	881	1,311	2,341
Other, net		7,377	(13,045)	7,378
Total other comprehensive income (loss)	107,118	(69,535)	(51,651)	(68,945)
Comprehensive income	291,958	188,518	388,831	583,372
Less: Comprehensive income attributable to non-controlling interests	708	1,340	2,258	7,445
Comprehensive income attributable to CBRE Group, Inc.	$ 291,250	$ 187,178	$ 386,573	$ 575,927

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 440,482	$ 652,317
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	357,903	323,862
Amortization and write-off of financing costs on extinguished debt	4,632	7,196
Gains related to mortgage servicing rights, premiums on loan sales and sales of other assets	(179,506)	(191,103)
Asset impairments	75,171	89,037
Net realized and unrealized gains, primarily from investments	(12,974)	(26,163)
Provision for doubtful accounts	49,498	18,083
Net compensation expense for equity awards	41,841	98,958
Equity income from unconsolidated subsidiaries	(72,487)	(120,233)
Distribution of earnings from unconsolidated subsidiaries	103,796	145,588
Proceeds from sale of mortgage loans	11,565,281	15,786,800
Origination of mortgage loans	(11,727,227)	(15,381,864)
Increase in warehouse lines of credit	214,659	19,849
Increase in advance warehouse funding		(376,707)
Tenant concessions received	28,617	18,367
Purchase of equity securities	(8,932)	(81,369)
Proceeds from sale of equity securities	11,210	45,333
Increase in real estate under development	(68,178)	(3,356)
Decrease (increase) in receivables, prepaid expenses and other assets (including contract and lease assets)	610,058	(644,586)
(Decrease) increase in accounts payable and accrued expenses and other liabilities (including contract and lease liabilities)	(128,693)	158,708
Decrease in compensation and employee benefits payable and accrued bonus and profit sharing	(550,932)	(194,592)
Decrease (increase) in net income taxes receivable/payable	118,736	(132,583)
Other operating activities, net	(12,313)	(36,793)
Net cash provided by operating activities	860,642	174,749
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(190,546)	(196,031)
Acquisition of businesses, including net assets acquired, intangibles and goodwill, net of cash acquired	(25,923)	(14,844)
Contributions to unconsolidated subsidiaries	(72,058)	(84,648)
Distributions from unconsolidated subsidiaries	66,409	20,960
Other investing activities, net	15,631	2,864
Net cash used in investing activities	(206,487)	(271,699)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from senior term loans		300,000
Repayment of senior term loans		(300,000)
Proceeds from revolving credit facility	835,671	2,683,000
Repayment of revolving credit facility	(835,671)	(2,631,000)
Proceeds from notes payable on real estate	40,263	5,243
Repayment of notes payable on real estate	(24,704)
Repurchase of common stock	(50,028)	(94,088)
Acquisition of businesses (cash paid for acquisitions more than three months after purchase date)	(34,400)	(36,089)
Units repurchased for payment of taxes on equity awards	(41,627)	(16,573)
Non-controlling interest contributions	1,977	46,513
Non-controlling interest distributions	(2,471)	(3,798)
Other financing activities, net	(334)	(5,171)
Net cash used in financing activities	(111,324)	(51,963)
Effect of currency exchange rate changes on cash and cash equivalents and restricted cash	9,981	(12,726)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	552,812	(161,639)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, AT BEGINNING OF PERIOD	1,093,745	863,944
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, AT END OF PERIOD	1,646,557	702,305
Cash paid during the period for:
Interest	60,415	80,179
Income tax payments, net	$ 4,137	$ 302,735

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-controlling Interests [Member]
Beginning balance at Dec. 31, 2018	$ 5,009,902	$ 3,369	$ 1,149,013	$ 4,504,684	$ (718,269)	$ 71,105
Net income	652,317			644,739		7,578
Net compensation expense for equity awards	98,958		98,958
Units repurchased for payment of taxes on equity awards	(16,573)		(16,573)
Repurchase of common stock	(94,088)	(11)	(94,077)
Foreign currency translation (loss) gain	(79,772)				(79,639)	(133)
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax	1,212				1,212
Unrealized gains (losses) on interest rate swaps, net of tax	(104)				(104)
Unrealized holding gains on available for sale debt securities, net of tax	2,341				2,341
Contributions from non-controlling interests	46,513					46,513
Distributions to non-controlling interests	(3,798)					(3,798)
Deconsolidation of investment	(67,667)					(67,667)
Other	9,739		2,700	6,108	7,378	(6,447)
Ending balance at Sep. 30, 2019	5,558,980	3,358	1,140,021	5,155,531	(787,081)	47,151
Beginning balance at Dec. 31, 2018	5,009,902	3,369	1,149,013	4,504,684	(718,269)	71,105
Ending balance at Dec. 31, 2019	6,273,112	3,348	1,115,944	5,793,149	(679,748)	40,419
Beginning balance at Jun. 30, 2019	5,390,530	3,363	1,162,002	4,898,932	(717,660)	43,893
Net income	258,053			256,599		1,454
Net compensation expense for equity awards	33,378		33,378
Units repurchased for payment of taxes on equity awards	(7,008)		(7,008)
Repurchase of common stock	(49,000)		(49,000)
Foreign currency translation (loss) gain	(78,177)				(78,063)	(114)
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax	377				377
Unrealized gains (losses) on interest rate swaps, net of tax	7				7
Unrealized holding gains on available for sale debt securities, net of tax	881				881
Contributions from non-controlling interests	4,536					4,536
Distributions to non-controlling interests	(1,235)					(1,235)
Deconsolidation of investment	(26)					(26)
Other	6,664	(5)	649		7,377	(1,357)
Ending balance at Sep. 30, 2019	5,558,980	3,358	1,140,021	5,155,531	(787,081)	47,151
Beginning balance at Dec. 31, 2019	6,273,112	3,348	1,115,944	5,793,149	(679,748)	40,419
Net income	440,482			438,224		2,258
Net compensation expense for equity awards	41,841		41,841
Units repurchased for payment of taxes on equity awards	(41,627)		(41,627)
Repurchase of common stock	(50,028)	(11)	(50,017)
Foreign currency translation (loss) gain	(40,237)				(40,237)
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax	320				320
Unrealized holding gains on available for sale debt securities, net of tax	1,311				1,311
Contributions from non-controlling interests	1,977					1,977
Distributions to non-controlling interests	(2,471)					(2,471)
Other	(30,378)	17	(1,292)	(15,081)	(13,045)	(977)
Ending balance at Sep. 30, 2020	6,594,302	3,354	1,064,849	6,216,292	(731,399)	41,206
Beginning balance at Jun. 30, 2020	6,285,051	3,352	1,046,999	6,032,160	(838,517)	41,057
Net income	184,840			184,132		708
Net compensation expense for equity awards	22,137		22,137
Units repurchased for payment of taxes on equity awards	(4,269)		(4,269)
Foreign currency translation (loss) gain	106,201				106,201
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of tax	106				106
Unrealized holding gains on available for sale debt securities, net of tax	811				811
Contributions from non-controlling interests	549					549
Distributions to non-controlling interests	(1,379)					(1,379)
Other	255	2	(18)			271
Ending balance at Sep. 30, 2020	$ 6,594,302	$ 3,354	$ 1,064,849	$ 6,216,292	$ (731,399)	$ 41,206

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Readers of this Quarterly Report on Form 10-Q (Quarterly Report) should refer to the audited financial statements and notes to consolidated financial statements of CBRE Group, Inc., a Delaware corporation (which may be referred to in these financial statements as “the company,” “we,” “us” and “our”), for the year ended December 31, 2019, which are included in our 2019 Annual Report on Form 10-K (2019 Annual Report), filed with the United States Securities and Exchange Commission (SEC) and also available on our website (www.cbre.com), since we have omitted from this Quarterly Report certain footnote disclosures which would substantially duplicate those contained in such audited financial statements. You should also refer to Note 2, Significant Accounting Policies, in the notes to consolidated financial statements in our 2019 Annual Report for further discussion of our significant accounting policies and estimates. Considerations Related to the COVID‑19 Pandemic The outbreak of the novel coronavirus (COVID‑19) global pandemic in the first quarter of 2020 has created a tremendous amount of uncertainty, precipitated a global economic contraction and severely disrupted both business activity and global real estate markets. From 2010 to early 2020, commercial real estate markets had generally been characterized by increased demand for space, falling vacancies, higher rents and strong capital flows, leading to solid property sales and leasing activity. This healthy backdrop changed abruptly in the first quarter of 2020 with the emergence of the COVID‑19 pandemic and resultant sharp contraction of economic activity across much of the world. There has been a significant impact on commercial real estate markets, as many property owners and occupiers have put transactions on hold and withdrawn existing mandates, sharply reducing sales and leasing volumes. We expect to see this trend continue, as concerns about a COVID-19 resurgence are high across our major markets. The recovery of real estate markets around the world remained uncertain as of October 2020. We expect the effects of COVID‑19 will adversely impact our financial position, results of operations, and cash flows for fiscal year 2020. The unaudited consolidated financial statements presented herein reflect our current estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures as of the date of the financial statements and reported amounts of sales and expenses during the reporting periods presented. See Note 6 (Fair Value Measurements) and Note 10 (Commitments and Contingencies) for further discussion of COVID‑19 considerations. Financial Statement Preparation The accompanying consolidated financial statements have been prepared in accordance with the rules applicable to quarterly reports on Form 10-Q and include all information and footnotes required for interim financial statement presentation, but do not include all disclosures required under accounting principles generally accepted in the United States (U.S.), or GAAP, for annual financial statements. In our opinion, all adjustments (consisting of normal recurring adjustments, except as otherwise noted) considered necessary for a fair presentation have been included. The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions about future events, including the impact COVID‑19 may have on our business. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported and reported amounts of revenue and expenses. Such estimates include the value of goodwill, intangibles and other long-lived assets, real estate assets, accounts receivable, contract assets, operating lease assets, investments in unconsolidated subsidiaries and assumptions used in the calculation of income taxes, retirement and other post-employment benefits, among others. These estimates and assumptions are based on our best judgment. We evaluate our estimates and assumptions on an ongoing basis using historical experience and other factors, including consideration of the current economic environment, and adjust such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in these estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. Certain re classifications have been made to the 201 9 financial statements to conform with the 20 20 presentation .

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2020
Accounting Changes And Error Corrections [Abstract]
New Accounting Pronouncements	2. New Accounting Pronouncements Recent Accounting Pronouncements Pending Adoption In August 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018‑14, “ Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans. In December 2019, the FASB issued ASU 2019‑12, “ Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. In January 2020, the FASB issued ASU 2020‑01, “ Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815). In March 2020, the FASB issued ASU 2020‑04, “ Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.”

Telford Acquisition

Telford Acquisition	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Telford Acquisition	3 . On October 1, 2019, we acquired Telford Homes Plc (Telford) to expand our real estate development business outside of the U.S. (Telford Acquisition). A leading developer of multifamily residential properties in the London area, Telford is reported in our Real Estate Investments segment. Telford shareholders received £3.50 per share in cash, valuing Telford at £267.1 million, or $328.5 million as of the acquisition date. The purchase accounting related to the Telford Acquisition has been finalized in the accompanying consolidated financial statements (with no significant changes made in 2020 to the preliminary purchase accounting recorded in 2019). The excess purchase price over the estimated fair value of net assets acquired has been recorded to goodwill. The goodwill arising from the Telford Acquisition consists largely of the synergies and economies of scale expected from combining the operations acquired from Telford with ours. The goodwill recorded in connection with the Telford Acquisition that is deductible for tax purposes was not significant.

Warehouse Receivables & Warehou

Warehouse Receivables & Warehouse Lines of Credit	9 Months Ended
	Sep. 30, 2020
Warehouse Receivables And Warehouse Lines Of Credit [Abstract]
Warehouse Receivables & Warehouse Lines of Credit	4 . Our wholly-owned subsidiary CBRE Capital Markets, Inc. (CBRE Capital Markets) is a Federal Home Loan Mortgage Corporation (Freddie Mac) approved Multifamily Program Plus Seller/Servicer and an approved Federal National Mortgage Association (Fannie Mae) Aggregation and Negotiated Transaction Seller/Servicer. In addition, CBRE Capital Markets’ wholly-owned subsidiary CBRE Multifamily Capital, Inc. (CBRE MCI) is an approved Fannie Mae Delegated Underwriting and Servicing (DUS) Seller/Servicer and CBRE Capital Markets’ wholly-owned subsidiary CBRE HMF, Inc. (CBRE HMF) is a U.S. Department of Housing and Urban Development (HUD) approved Non-Supervised Federal Housing Authority (FHA) Title II Mortgagee, an approved Multifamily Accelerated Processing (MAP) lender and an approved Government National Mortgage Association (Ginnie Mae) issuer of mortgage-backed securities (MBS). Under these arrangements, before loans are originated through proceeds from warehouse lines of credit, we obtain either a contractual loan purchase commitment from either Freddie Mac or Fannie Mae or a confirmed forward trade commitment for the issuance and purchase of a Fannie Mae or Ginnie Mae MBS that will be secured by the loans. The warehouse lines of credit are generally repaid within a one-month A rollforward of our warehouse receivables is as follows (dollars in thousands): Beginning balance at December 31, 2019 $ 993,058 Origination of mortgage loans 11,727,227 Gains (premiums on loan sales) 51,380 Proceeds from sale of mortgage loans: Sale of mortgage loans (11,513,901 ) Cash collections of premiums on loan sales (51,380 ) Proceeds from sale of mortgage loans (11,565,281 ) Net increase in mortgage servicing rights included in warehouse receivables 5,502 Ending balance at September 30, 2020 $ 1,211,886 The following table is a summary of our warehouse lines of credit in place as of September 30, 2020 and December 31, 2019 (dollars in thousands): September 30, 2020 December 31, 2019 Lender Current Maturity Pricing Maximum Facility Size Carrying Value Maximum Facility Size Carrying Value JP Morgan Chase Bank, N.A. (JP Morgan) (1) 10/19/2020 daily floating rate LIBOR plus 1.30% $ 985,000 $ 336,262 $ 985,000 $ 267,075 JP Morgan (2) 10/19/2020 daily floating rate LIBOR plus 2.75% 15,000 — 15,000 — Capital One, N.A. (Capital One) (3) 7/27/2020 daily one-month LIBOR plus 1.25% — — 200,000 39,538 Fannie Mae Multifamily As Soon As Pooled Plus Agreement and Multifamily As Soon As Pooled Sale Agreement (ASAP) Program Cancelable anytime daily one-month LIBOR plus 1.35%, with a LIBOR floor of 0.35% 450,000 65,505 450,000 360,784 TD Bank, N.A. (TD Bank) (4) (4) daily floating rate LIBOR plus 1.15% 800,000 596,021 800,000 92,266 Bank of America, N.A. (BofA) (5) 5/26/2021 (6) 350,000 189,290 350,000 189,465 BofA (7) daily one-month LIBOR plus 1.15% — — 250,000 17,457 MUFG Union Bank, N.A. (Union Bank) (8) (8) daily floating rate LIBOR plus 1.50% 300,000 4,756 350,000 10,590 $ 2,900,000 $ 1,191,834 $ 3,400,000 $ 977,175 (1) Effective October 19, 2020, this facility was amended and the maximum facility size was temporarily increased to $1,585.0 million and will revert back to $985.0 million on January 18, 2021. The interest rate increased to a LIBOR daily floating rate, plus 1.60% and the revised maturity date is October 18, 2021. (2) Effective October 19, 2020 the maturity date was extended to October 18, 2021. (3) This facility expired on July 27, 2020 and was not renewed. (4) Effective July 1, 2020, this facility was amended and provides for a maximum aggregate principal amount of $400.0 million, in addition to an uncommitted $400.0 million temporary line of credit, with an unchanged interest rate and revised maturity date of June 30, 2021. Effective September 21, 2020, CBRE utilized the additional $400.0 million as a temporary increase, which expires on December 31, 2020. (5) On June 10, 2020, this facility was amended with a revised maturity date of May 26, 2021. The total commitment amount of $350.0 million includes a separate sublimit borrowing in the amount of $100.0 million, which can be utilized for specific purposes as defined within the agreement. As of September 30, 2020, the sublimit borrowing has not been utilized. (6) Effective July 24, 2020, the interest rate on this facility was as follows: (i) a LIBOR daily floating rate for such day, plus 1.40% on the general facility and (ii) a LIBOR daily floating rate for such day, plus 1.75% on the separate sublimit borrowing. (7) This facility expired on May 27, 2020 and was not renewed. (8) On June 28, 2019, we added a new warehouse facility for $200.0 million with Union Bank. This facility contains an accordion feature which allows for temporary increases not to exceed an additional $150.0 million. If utilized, the additional borrowings must be in predefined multiples and are not to occur more than three times within twelve consecutive months. On June 26, 2020, the maturity date was extended to July 28, 2020 and on July 28, 2020 the maturity date was extended to August 27, 2020. Effective August 4, 2020, this facility was amended with a revised interest of LIBOR daily floating rate for such day, plus 1.50% and a maturity date of June 28, 2021. Additionally, this amendment decreased the accordion feature from $150.0 million to $100.0 million, with no changes to the predefined borrowing multiples. On September 22, 2020, the temporary increase of $100.0 million was utilized and expires on January 20, 2021. During the nine months ended September 30, 2020, we had a maximum of $1.8 billion of warehouse lines of credit principal outstanding.

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	9 Months Ended
	Sep. 30, 2020
Equity Method Investments And Joint Ventures [Abstract]
Variable Interest Entities (VIEs)	5 . We hold variable interests in certain VIEs in our Real Estate Investments segment which are not consolidated as it was determined that we are not the primary beneficiary. Our involvement with these entities is in the form of equity co-investments and fee arrangements. As of September 30, 2020 and December 31, 2019, our maximum exposure to loss related to VIEs which are not consolidated was as follows (dollars in thousands): September 30, December 31, 2020 2019 Investments in unconsolidated subsidiaries $ 65,341 $ 30,484 Other current assets 4,219 4,307 Co-investment commitments 53,971 29,696 Maximum exposure to loss $ 123,531 $ 64,487

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	6 . Topic 820 of the FASB Accounting Standards Codification (ASC) defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. Topic 820 also establishes a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows: • Level 1 – Quoted prices in active markets for identical assets or liabilities. • Level 2 – Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs. There have been no significant changes to the valuation techniques and inputs used to develop the recurring fair value measurements from those disclosed in our 2019 Annual Report . For a portion of our investments in unconsolidated subsidiaries reported at fair value, we estimate fair value using the net asset value (NAV) per share (or its equivalent) our investees provide. These investments are considered investment companies, or are the equivalent of investment companies, as they carry all investments at fair value, with unrealized gains and losses resulting from changes in fair value reflected in earnings. Accordingly, we effectively carry our investments at an amount that is equivalent to our proportionate share of the net assets of each investment that would be allocated to us if each investment was liquidated at the net asset value as of the measurement date. As of September 30, 2020, and December 31, 2019, investments in unconsolidated subsidiaries at fair value using NAV were $59.0 million and $45.2 million, respectively. These investments fall under practical expedient rules that do not require them to be included in the fair value hierarchy and as a result have been excluded from the tables below. The following tables present the fair value of assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 (dollars in thousands): As of September 30, 2020 Fair Value Measured and Recorded Using Level 1 Level 2 Level 3 Total Assets Available for sale securities: Debt securities: U.S. treasury securities $ 7,325 $ — $ — $ 7,325 Debt securities issued by U.S. federal agencies — 10,944 — 10,944 Corporate debt securities — 47,173 — 47,173 Asset-backed securities — 2,973 — 2,973 Collateralized mortgage obligations — 1,357 — 1,357 Total available for sale debt securities 7,325 62,447 — 69,772 Equity securities 40,089 — — 40,089 Warehouse receivables — 1,211,886 — 1,211,886 Total assets at fair value $ 47,414 $ 1,274,333 $ — $ 1,321,747 As of December 31, 2019 Fair Value Measured and Recorded Using Level 1 Level 2 Level 3 Total Assets Available for sale securities: Debt securities: U.S. treasury securities $ 6,998 $ — $ — $ 6,998 Debt securities issued by U.S. federal agencies — 10,639 — 10,639 Corporate debt securities — 29,098 — 29,098 Asset-backed securities — 5,152 — 5,152 Collateralized mortgage obligations — 2,222 — 2,222 Total available for sale debt securities 6,998 47,111 — 54,109 Equity securities 51,399 — — 51,399 Warehouse receivables — 993,058 — 993,058 Total assets at fair value $ 58,397 $ 1,040,169 $ — $ 1,098,566 There were no significant non-recurring fair value measurements recorded during the three months ended September 30, 2020 and 2019 . The following non-recurring fair value measurements were recorded for the nine months ended September 30, 2020 (dollars in thousands): Total Impairment Charges Net Carrying Value Fair Value Measured and for the as of Recorded Using Nine Months Ended September 30, 2020 Level 1 Level 2 Level 3 September 30, 2020 Property and equipment $ 9,565 $ — $ — $ 9,565 $ 21,663 Goodwill 431,389 — — 431,389 25,000 Other intangible assets 12,842 — — 12,842 28,508 Total $ 453,796 $ — $ — $ 453,796 $ 75,171 The following non-recurring fair value measurements were recorded for the nine months ended September 30, 2019 (dollars in thousands): Total Impairment Charges Net Carrying Value Fair Value Measured and for the as of Recorded Using Nine Months Ended September 30, 2019 Level 1 Level 2 Level 3 September 30, 2019 Other intangible assets $ 16,000 $ — $ — $ 16,000 $ 89,037 During the nine months ended September 30, 2020, we recorded $50.2 million of non-cash asset impairment charges in our Global Workplace Solutions segment and a non-cash goodwill impairment charge of $25.0 million in our Real Estate Investments segment. As a result of the recent global economic disruption and uncertainty due to COVID‑19, we deemed there to be triggering events in the first quarter of 2020 that required testing of certain assets for impairment at that time. Based on these tests, we recorded the aforementioned non-cash impairment charges, which were driven by lower anticipated cash flows in certain businesses directly resulting from a downturn in forecasts as well as increased forecast risk due to COVID‑19. During the nine months ended September 30, 2019, we recorded an intangible asset impairment charge of $89.0 million in our Real Estate Investments segment. This non-cash write-off resulted from a review of the anticipated cash flows and a decrease in assets under management in our public securities business driven in part by continued industry-wide shift in investor preference for passive investment programs. All the above-mentioned asset impairment charges were included within the line item “Asset impairments” in the accompanying consolidated statements of operations. The fair value measurements employed for our impairment evaluations were based on a discounted cash flow approach. Inputs used in these evaluations included risk-free rates of return, estimated risk premiums, terminal growth rates, working capital assumptions, income tax rates as well as other economic variables. FASB ASC Topic 825, “Financial Instruments” • Cash and Cash Equivalents and Restricted Cash – These balances include cash and cash equivalents as well as restricted cash with maturities of less than three months. The carrying amount approximates fair value due to the short-term maturities of these instruments. • Receivables, less Allowance for Doubtful Accounts – Due to their short-term nature, fair value approximates carrying value. • Warehouse Receivables – These balances are carried at fair value. The primary source of value is either a contractual purchase commitment from Freddie Mac or a confirmed forward trade commitment for the issuance and purchase of a Fannie Mae or Ginnie Mae MBS (see Note 4 ). • Investments in Unconsolidated Subsidiaries – A portion of these investments are carried at fair value. At September 30, 2020, we did not classify any investments as Level 1 in the fair value hierarchy. For investments in unconsolidated subsidiaries that are carried at fair value, we estimate the fair value of each investment using the NAV per share (or its equivalent). • Available for Sale Debt Securities – These investments are carried at their fair value. • Equity Securities – These investments are carried at their fair value. • Short-Term Borrowings – The majority of this balance represents outstanding amounts under our warehouse lines of credit of our wholly-owned subsidiary, CBRE Capital Markets, and our revolving credit facility. Due to the short-term nature and variable interest rates of these instruments, fair value approximates carrying value (see Notes 4 and 8). • Senior Term Loans – Based upon information from third-party banks (which falls within Level 2 of the fair value hierarchy), the estimated fair value of our senior term loans was approximately $752.7 million at September 30, 2020 and $745.5 million at December 31, 2019. Their actual carrying value, net of unamortized debt issuance costs, totaled $765.7 million and $744.6 million at September 30, 2020 and December 31, 2019, respectively (see Note 8). • Senior Notes – Based on dealers’ quotes (which falls within Level 2 of the fair value hierarchy), the estimated fair values of our 4.875 and $482.6 million, respectively, at September 30, 2020 and $670.7 million and $478.3 million, respectively, at December 31, 2019. The actual carrying value of our 4.875 $593.6 million and $423.0 million, respectively, at December 31, 2019.

Investments in Unconsolidated S

Investments in Unconsolidated Subsidiaries	9 Months Ended
	Sep. 30, 2020
Equity Method Investments And Joint Ventures [Abstract]
Investments in Unconsolidated Subsidiaries	7 . Investments in unconsolidated subsidiaries are accounted for under the equity method of accounting. Our investment ownership percentages in equity method investments vary, generally ranging up to 50.0%. Combined condensed financial information for the entities accounted for using the equity method is as follows (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Revenue $ 513,792 $ 375,717 $ 1,337,212 $ 1,083,664 Operating income 97,833 191,667 411,291 383,490 Net income 109,251 189,960 267,835 289,437

Long-Term Debt and Short-Term B

Long-Term Debt and Short-Term Borrowings	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Long-Term Debt and Short-Term Borrowings	8 . Long-Term Debt Long-term debt consists of the following (dollars in thousands): September 30, December 31, 2020 2019 Senior term loans, with interest ranging from 0.75% to 2.69%, due quarterly through 2024 $ 768,988 $ 748,531 4.875% senior notes due in 2026, net of unamortized discount 597,364 597,052 5.25% senior notes due in 2025, net of unamortized premium 425,814 425,952 Other 1,526 1,861 Total long-term debt 1,793,692 1,773,396 Less: current maturities of long-term debt (1,526 ) (1,814 ) Less: unamortized debt issuance costs (8,954 ) (10,337 ) Total long-term debt, net of current maturities $ 1,783,212 $ 1,761,245 We maintain credit facilities with third-party lenders, which we use for a variety of purposes. On March 4, 2019, CBRE Services, Inc. (CBRE Services) entered into an incremental assumption agreement with respect to its credit agreement, dated October 31, 2017 (such credit agreement, as amended by a December 20, 2018 incremental loan assumption agreement and such March 4, 2019 incremental assumption agreement, the 2019 Credit Agreement), which (i) extended the maturity of the U.S. dollar tranche A term loans under such credit agreement, (ii) extended the termination date of the revolving credit commitments available under such credit agreement and (iii) made certain changes to the interest rates and fees applicable to such tranche A term loans and revolving credit commitments under such credit agreement. The proceeds from the new tranche A term loan facility under the 2019 Credit Agreement were used to repay the $300.0 million of tranche A term loans outstanding under the credit agreement in effect prior to the entry into the 2019 incremental assumption agreement. The 2019 Credit Agreement is a senior unsecured credit facility that is jointly and severally guaranteed by us and certain of our subsidiaries. As of September 30, 2020, the 2019 Credit Agreement provided for the following: (1) a $2.8 billion incremental revolving credit facility, which includes the capacity to obtain letters of credit and swingline loans and terminates on March 4, 2024; (2) a $300.0 million incremental tranche A term loan facility maturing on March 4, 2024, requiring quarterly principal payments unless our leverage ratio (as defined in the 2019 Credit Agreement) is less than or equal to 2.50 to 1.00 on the last day of the fiscal quarter immediately preceding any such payment date; and (3) a €400.0 million term loan facility due and payable in full at maturity on December 20, 2023. The indentures governing our 4.875% senior notes and 5.25% senior notes contain restrictive covenants that, among other things, limit our ability to create or permit liens on assets securing indebtedness, enter into sale/leaseback transactions and enter into consolidations or mergers. In addition, these indentures require that the 4.875% senior notes and 5.25% senior notes be jointly and severally guaranteed on a senior basis by CBRE Group, Inc. and each domestic subsidiary of CBRE Services that guarantees our 2019 Credit Agreement. Our 2019 Credit Agreement also requires us to maintain a minimum coverage ratio of consolidated EBITDA (as defined in the 2019 Credit Agreement) to consolidated interest expense of 2.00x and a maximum leverage ratio of total debt less available cash to consolidated EBITDA (as defined in the 2019 Credit Agreement) of 4.25x (and in the case of the first four full fiscal quarters following consummation of a qualified acquisition (as defined in the 2019 Credit Agreement), 4.75x) as of the end of each fiscal quarter. On this basis, our coverage ratio of consolidated EBITDA to consolidated interest expense was 23.68x for the trailing twelve months ended September 30, 2020, and our leverage ratio of total debt less available cash to consolidated EBITDA was 0.25x as of September 30, 2020. Short-Term Borrowings Revolving Credit Facility The revolving credit facility under the 2019 Credit Agreement allows for borrowings outside of the U.S., with a $200.0 million sub-facility available to CBRE Services, one of our Canadian subsidiaries, one of our Australian subsidiaries and one of our New Zealand subsidiaries and a $300.0 million sub-facility available to CBRE Services and one of our U.K. subsidiaries. Borrowings under the revolving credit facility bear interest at varying rates, based at our option, on either (1) the applicable fixed rate plus 0.680% to 1.075% or (2) the daily rate plus 0.0% to 0.075%, in each case as determined by reference to our Credit Rating (as defined in the 2019 Credit Agreement). The 2019 Credit Agreement requires us to pay a fee based on the total amount of the revolving credit facility commitment (whether used or unused). As of September 30, 2020, no amount was outstanding under the revolving credit facility other than letters of credit totaling $2.0 million. These letters of credit, which reduce the amount we may borrow under the revolving credit facility, were primarily issued in the ordinary course of business. Warehouse Lines of Credit CBRE Capital Markets has warehouse lines of credit with third-party lenders for the purpose of funding mortgage loans that will be resold, and a funding arrangement with Fannie Mae for the purpose of selling a percentage of certain closed multifamily loans to Fannie Mae. These warehouse lines are recourse only to CBRE Capital Markets and are secured by our related warehouse receivables. See Note 4 for additional information.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	9 . Leases We are the lessee in contracts for our office space tenancies, for leased vehicles and for our wholly-owned subsidiary Hana. These arrangements account for the significant portion of our lease liabilities and right-of-use assets. We monitor our service arrangements to evaluate whether they meet the definition of a lease. Supplemental balance sheet information related to our leases is as follows (dollars in thousands): September 30, December 31, Category Classification 2020 2019 Assets Operating lease assets Operating lease assets $ 1,057,992 $ 997,966 Financing lease assets Other assets, net 99,990 94,141 Total leased assets $ 1,157,982 $ 1,092,107 Liabilities Current: Operating Operating lease liabilities $ 189,641 $ 168,663 Financing Other current liabilities 37,780 34,966 Non-current: Operating Non-current operating lease liabilities 1,125,005 1,057,758 Financing Other liabilities 62,331 60,001 Total lease liabilities $ 1,414,757 $ 1,321,388 Supplemental cash flow information and non-cash activity related to our leases are as follows (dollars in thousands): Nine Months Ended September 30, 2020 2019 Right-of-use assets obtained in exchange for new operating lease liabilities $ 175,909 $ 149,259 Right-of-use assets obtained in exchange for new financing lease liabilities 34,169 40,819 Other non-cash increases in operating lease right-of-use assets (1) 6,729 35,510 Other non-cash decreases in financing lease right-of-use assets (1) (471 ) (1,011 ) ( 1 ) The non-cash activity in the right-of-use assets resulted from lease modifications and remeasurements.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	1 0 . We are a party to a number of pending or threatened lawsuits arising out of, or incident to, our ordinary course of business. We believe that any losses in excess of the amounts accrued therefore as liabilities on our financial statements are unlikely to be significant, but litigation is inherently uncertain and there is the potential for a material adverse effect on our financial statements if one or more matters are resolved in a particular period in an amount materially in excess of what we anticipated. In January 2008, CBRE MCI, a wholly-owned subsidiary of CBRE Capital Markets, entered into an agreement with Fannie Mae under Fannie Mae’s Delegated Underwriting and Servicing Lender Program (DUS Program), to provide financing for multifamily housing with five or more units. Under the DUS Program, CBRE MCI originates, underwrites, closes and services loans without prior approval by Fannie Mae, and typically, is subject to sharing up to one-third of any losses on loans originated under the DUS Program. CBRE MCI has funded loans subject to such loss sharing arrangements with unpaid principal balances of $26.2 billion at September 30, 2020. CBRE MCI, under its agreement with Fannie Mae, must post cash reserves or other acceptable collateral under formulas established by Fannie Mae to provide for sufficient capital in the event losses occur. As of September 30, 2020 and December 31, 2019, CBRE MCI had a $85.0 million and a $72.0 million, respectively, letter of credit under this reserve arrangement, and had recorded a liability of approximately $56.5 million and $37.0 million, respectively, for its loan loss guarantee obligation under such arrangement. Fannie Mae’s recourse under the DUS Program is limited to the assets of CBRE MCI, which assets totaled approximately $928.0 million (including $556.4 million of warehouse receivables, a substantial majority of which are pledged against warehouse lines of credit and are therefore not available to Fannie Mae) at September 30, 2020. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted in the United States in response to the COVID‑19 pandemic. The CARES Act, among other things, permits borrowers with government-backed mortgages from Government Sponsored Enterprises who are experiencing a financial hardship to obtain forbearance of their loans. For Fannie Mae loans that we service, CBRE MCI is obligated to advance (for a forbearance period up to 90 consecutive days and potentially longer) scheduled principal and interest payments to Fannie Mae, regardless of whether the borrowers actually make the payments. CBRE Capital Markets participates in Freddie Mac’s Multifamily Small Balance Loan (SBL) Program. Under the SBL program, CBRE Capital Markets has certain repurchase and loss reimbursement obligations. We could potentially be obligated to repurchase any SBL loan originated by CBRE Capital Markets that remains in default for 120 days following the forbearance period, if the default occurred during the first 12 months after origination and such loan had not been earlier securitized. In addition, CBRE Capital Markets may be responsible for a loss not to exceed 10% of the original principal amount of any SBL loan that is not securitized and goes into default after the 12-month repurchase period. CBRE Capital Markets must post a cash reserve or other acceptable collateral to provide for sufficient capital in the event the obligations are triggered. As of both September 30, 2020 and December 31, 2019, CBRE Capital Markets had posted a $5.0 million letter of credit under this reserve arrangement. We had outstanding letters of credit totaling $104.4 million as of September 30, 2020, excluding letters of credit for which we have outstanding liabilities already accrued on our consolidated balance sheet related to our subsidiaries’ outstanding reserves for claims under certain insurance programs as well as letters of credit related to operating leases. The CBRE Capital Markets letters of credit totaling $90.0 million as of September 30, 2020 referred to in the preceding paragraphs represented the majority of the $104.4 million outstanding letters of credit as of such date. The remaining letters of credit are primarily executed by us in the ordinary course of business and expire at varying dates through October 2021. We had guarantees totaling $72.4 million as of September 30, 2020, excluding guarantees related to pension liabilities, consolidated indebtedness and other obligations for which we have outstanding liabilities already accrued on our consolidated balance sheet, and excluding guarantees related to operating leases. The $72.4 million primarily represents guarantees executed by us in the ordinary course of business, including various guarantees of management and vendor contracts in our operations overseas, which expire at the end of each of the respective agreements. In addition, as of September 30, 2020, we had issued numerous non-recourse carveout, completion and budget guarantees relating to development projects for the benefit of third parties. These guarantees are commonplace in our industry and are made by us in the ordinary course of our Real Estate Investments business. Non-recourse carveout guarantees generally require that our project-entity borrower not commit specified improper acts, with us potentially liable for all or a portion of such entity’s indebtedness or other damages suffered by the lender if those acts occur. Completion and budget guarantees generally require us to complete construction of the relevant project within a specified timeframe and/or within a specified budget, with us potentially being liable for costs to complete in excess of such timeframe or budget. While there can be no assurance, we do not expect to incur any material losses under these guarantees. An important part of the strategy for our Real Estate Investments business involves investing our capital in certain real estate investments with our clients. These co-investments generally total up to 2.0% of the equity in a particular fund. As of September 30, 2020, we had aggregate commitments of $84.0 million to fund these future co-investments. Additionally, an important part of our Real Estate Investments business strategy is to invest in unconsolidated real estate subsidiaries as a principal (in most cases co-investing with our clients). As of September 30, 2020, we had committed to fund $41.0 million of additional capital to these unconsolidated subsidiaries.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes Our provision for income taxes on a consolidated basis was $49.1 million for the three months ended September 30, 2020 as compared to $63.5 million for the three months ended September 30, 2019. The decrease of $14.4 million is primarily related to the corresponding decrease in our consolidated pre-tax book income. Our effective tax rate increased to 21.0% for the three months ended September 30, 2020 from 19.7% for the three months ended September 30, 2019 primarily due to a larger impact on a percentage basis of unfavorable permanent book tax differences in certain non-U.S. jurisdictions due to lower pre-tax book income. Our provision for income taxes on a consolidated basis was $119.0 million for the nine months ended September 30, 2020 as compared to $169.9 million for the nine months ended September 30, 2019. The decrease of $50.9 million is primarily related to the corresponding decrease in consolidated pre-tax book income. Our effective tax rate increased to 21.3% for the nine months ended September 30, 2020 from 20.7% for the nine months ended September 30, 2019 primarily due to a larger impact on a percentage basis of unfavorable permanent book tax differences in certain non-U.S. jurisdictions due to lower pre-tax book income. Our effective tax rate for the three months and nine months ended September 30, 2020 was not significantly different than the U.S. federal statutory tax rate of 21.0%. As of September 30, 2020, the company had gross unrecognized tax benefits of $142.2 million; a net increase of $1.0 million was recorded over the nine months ended September 30, 2020. The net increase of $1.0 million consists of unrecognized tax benefits of $6.4 million through the six months ended June 30, 2020 and a release of $5.4 million of gross unrecognized tax benefits in the current quarter, primarily related to expiration of statute of limitations in various tax jurisdictions. The CARES Act has not had, nor is it expected to have, a significant impact on our effective tax rate for 2020.

Income Per Share and Stockholde

Income Per Share and Stockholders' Equity	9 Months Ended
	Sep. 30, 2020
Earnings Per Share And Stockholders Equity [Abstract]
Income Per Share and Stockholders' Equity	1 2 . The calculations of basic and diluted income per share attributable to CBRE Group, Inc. shareholders are as follows (dollars in thousands, except share data): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Basic Income Per Share Net income attributable to CBRE Group, Inc. shareholders $ 184,132 $ 256,599 $ 438,224 $ 644,739 Weighted average shares outstanding for basic income per share 335,287,245 336,203,747 335,128,531 336,149,719 Basic income per share attributable to CBRE Group, Inc. shareholders $ 0.55 $ 0.76 $ 1.31 $ 1.92 Diluted Income Per Share Net income attributable to CBRE Group, Inc. shareholders $ 184,132 $ 256,599 $ 438,224 $ 644,739 Weighted average shares outstanding for basic income per share: 335,287,245 336,203,747 335,128,531 336,149,719 Dilutive effect of contingently issuable shares 2,378,603 4,896,435 3,127,328 4,440,288 Weighted average shares outstanding for diluted income per share 337,665,848 341,100,182 338,255,859 340,590,007 Diluted income per share attributable to CBRE Group, Inc. shareholders $ 0.55 $ 0.75 $ 1.30 $ 1.89 For the three and nine months ended September 30, 2020, 1,294,385 and 1,191,464, respectively, of contingently issuable shares were excluded from the computation of diluted income per share because their inclusion would have had an anti-dilutive effect. For the three and nine months ended September 30, 2019, 320,154 and 447,687, respectively, of contingently issuable shares were excluded from the computation of diluted income per share because their inclusion would have had an anti-dilutive effect. In October 2016, our board of directors authorized the company to repurchase up to an aggregate of $250.0 million of our Class A common stock over three years. During January 2019, through an existing stock repurchase plan entered into pursuant to Rule 10b5-1 under the Exchange Act (10b5-1 plan), we spent $45.1 million to repurchase 1,144,449 shares of our Class A common stock with an average price paid per share of $39.38. In February 2019, our board of directors authorized a new program for the company to repurchase up to $300.0 million of our Class A common stock over three years, effective March 11, 2019. The previous program terminated upon the effectiveness of the new stock repurchase program. In each of August and November 2019, our board of directors authorized an additional $100.0 million under our new program, bringing the total authorized amount under the new program to $500.0 million. During the year ended December 31, 2019, under the March 2019 program, and through repurchases under a 10b5-1 plan, we spent $100.0 million to repurchase an additional 1,936,458 shares of our Class A common stock with an average price paid per share of $51.64. During the month of March 2020, through repurchases under a 10b5-1 plan, we spent $50.0 million to repurchase an additional 1,050,084 shares of our Class A common stock with an average price paid per share of $47.62. We did not repurchase any of our stock during the three month periods ended June 30, 2020 and September 30, 2020. As of September 30, 2020, we had $350.0 million of capacity remaining under our current stock repurchase program.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Revenue from Contracts with Customers	1 3 . We account for revenue with customers in accordance with FASB ASC Topic, “ Revenue from Contracts with Customers Disaggregated Revenue The following tables represent a disaggregation of revenue from contracts with customers for the three and nine months ended September 30, 2020 and 2019 by type of service and/or segment (dollars in thousands): Three Months Ended September 30, 2020 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 3,721,365 $ — $ 3,721,365 Advisory leasing 536,132 — — 536,132 Advisory sales 346,650 — — 346,650 Property and advisory project management 545,325 — — 545,325 Valuation 139,019 — — 139,019 Commercial mortgage origination (1) 20,040 — — 20,040 Loan servicing (2) 9,860 — — 9,860 Investment management — — 99,935 99,935 Development services — — 68,850 68,850 Topic 606 Revenue 1,597,026 3,721,365 168,785 5,487,176 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 108,986 — — 108,986 Loan servicing 48,153 — — 48,153 Development services (3) — — 827 827 Total Out of Scope of Topic 606 Revenue 157,139 — 827 157,966 Total revenue $ 1,754,165 $ 3,721,365 $ 169,612 $ 5,645,142 Three Months Ended September 30, 2019 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 3,555,176 $ — $ 3,555,176 Advisory leasing 781,246 — — 781,246 Advisory sales 526,104 — — 526,104 Property and advisory project management 558,039 — — 558,039 Valuation 154,861 — — 154,861 Commercial mortgage origination (1) 46,787 — — 46,787 Loan servicing (2) 8,599 — — 8,599 Investment management — — 104,927 104,927 Development services — — 24,286 24,286 Topic 606 Revenue 2,075,636 3,555,176 129,213 5,760,025 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 117,052 — — 117,052 Loan servicing 48,024 — — 48,024 Total Out of Scope of Topic 606 Revenue 165,076 — — 165,076 Total revenue $ 2,240,712 $ 3,555,176 $ 129,213 $ 5,925,101 (1) We earn fees for arranging financing for borrowers with third-party lender contacts. Such fees are in scope of Topic 606. (2) Loan servicing fees earned from servicing contracts for which we do not hold mortgage servicing rights are in scope of Topic 606. (3) Out of scope revenue for development services represents selling profit from transfers of sales-type leases in the scope of Topic 842. Nine Months Ended September 30, 2020 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 11,134,383 $ — $ 11,134,383 Advisory leasing 1,653,367 — — 1,653,367 Advisory sales 1,018,853 — — 1,018,853 Property and advisory project management 1,623,486 — — 1,623,486 Valuation 418,616 — — 418,616 Commercial mortgage origination (1) 78,030 — — 78,030 Loan servicing (2) 30,290 — — 30,290 Investment management — — 324,745 324,745 Development services — — 202,776 202,776 Topic 606 Revenue 4,822,642 11,134,383 527,521 16,484,546 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 274,523 — — 274,523 Loan servicing 141,453 — — 141,453 Development services (3) — — 15,172 15,172 Total Out of Scope of Topic 606 Revenue 415,976 — 15,172 431,148 Total revenue $ 5,238,618 $ 11,134,383 $ 542,693 $ 16,915,694 Nine Months Ended September 30, 2019 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 10,106,543 $ — $ 10,106,543 Advisory leasing 2,221,674 — — 2,221,674 Advisory sales 1,378,317 — — 1,378,317 Property and advisory project management 1,634,745 — — 1,634,745 Valuation 442,238 — — 442,238 Commercial mortgage origination (1) 102,471 — — 102,471 Loan servicing (2) 22,669 — — 22,669 Investment management — — 312,881 312,881 Development services — — 101,188 101,188 Topic 606 Revenue 5,802,114 10,106,543 414,069 16,322,726 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 322,246 — — 322,246 Loan servicing 129,712 — — 129,712 Total Out of Scope of Topic 606 Revenue 451,958 — — 451,958 Total revenue $ 6,254,072 $ 10,106,543 $ 414,069 $ 16,774,684 (1) We earn fees for arranging financing for borrowers with third-party lender contacts. Such fees are in scope of Topic 606. (2) Loan servicing fees earned from servicing contracts for which we do not hold mortgage servicing rights are in scope of Topic 606. (3) Out of scope revenue for development services represents selling profit from transfers of sales-type leases in the scope of Topic 842. Contract Assets and Liabilities We had contract assets totaling $459.8 million ($282.0 million of which was current) and $529.8 million ($328.0 million of which was current) as of September 30, 2020 and December 31, 2019, respectively. We had contract liabilities totaling $134.3 million ($132.5 million of which was current) and $115.0 million ($108.7 million of which was current) as of September 30, 2020 and December 31, 2019, respectively. During the nine months ended September 30, 2020, we recognized revenue of $77.9 million that was included in the contract liability balance at December 31, 2019.

Segments

Segments	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Segments	1 4 . We organize our operations around, and publicly report our financial results on, three global business segments: (1) Advisory Services; (2) Global Workplace Solutions and (3) Real Estate Investments. Advisory Services provides a comprehensive range of services globally, including property leasing, property sales, mortgage services, property management, project management and valuation. Global Workplace Solutions provides a broad suite of integrated, contractually-based outsourcing services to occupiers of real estate, including facilities management, project management and transaction services. Real Estate Investments includes: (i) investment management services provided globally; (ii) development services in the U.S. and U.K. and (iii) flexible office space solutions. Summarized financial information by segment is as follows (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Revenue Advisory Services $ 1,754,165 $ 2,240,712 $ 5,238,618 $ 6,254,072 Global Workplace Solutions 3,721,365 3,555,176 11,134,383 10,106,543 Real Estate Investments 169,612 129,213 542,693 414,069 Total revenue $ 5,645,142 $ 5,925,101 $ 16,915,694 $ 16,774,684 Adjusted EBITDA Advisory Services $ 236,369 $ 345,482 $ 662,129 $ 942,860 Global Workplace Solutions 140,523 95,209 355,768 298,948 Real Estate Investments 64,872 13,939 121,522 131,346 Total Adjusted EBITDA $ 441,764 $ 454,630 $ 1,139,419 $ 1,373,154 Adjusted EBITDA is the measure reported to the chief operating decision maker (CODM) for purposes of making decisions about allocating resources to each segment and assessing performance of each segment. EBITDA represents earnings before net interest expense, write-off of financing costs on extinguished debt, income taxes, depreciation and amortization and asset impairments. Amounts shown for adjusted EBITDA further remove (from EBITDA) the impact of costs associated with transformation initiatives, certain carried interest incentive compensation expense (reversal) to align with the timing of associated revenue, fair value adjustments to real estate acquired in the Telford Acquisition (purchase accounting) that were sold in the period, costs incurred related to legal entity restructuring, integration and other costs related to acquisitions, costs primarily associated with workforce optimization efforts in response to the COVID-19 pandemic and costs associated with our reorganization, including cost-savings initiatives. Adjusted EBITDA is calculated as follows (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Net income attributable to CBRE Group, Inc. $ 184,132 $ 256,599 $ 438,224 $ 644,739 Add: Depreciation and amortization 127,725 111,560 357,903 323,862 Asset impairments — — 75,171 89,037 Interest expense, net of interest income 17,829 21,846 51,795 67,638 Write-off of financing costs on extinguished debt — — — 2,608 Provision for income taxes 49,062 63,468 119,047 169,867 EBITDA 378,748 453,473 1,042,140 1,297,751 Adjustments: Costs associated with transformation initiatives (1) 55,374 — 55,374 — Carried interest incentive compensation expense (reversal) to align with the timing of associated revenue 3,767 (3,360 ) (11,517 ) 12,284 Impact of fair value adjustments to real estate assets acquired in the Telford Acquisition (purchase accounting) that were sold in period 2,289 — 9,289 — Costs incurred related to legal entity restructuring 1,061 — 4,995 — Integration and other costs related to acquisitions 525 4,517 1,544 13,554 Costs associated with workforce optimization efforts (2) — — 37,594 — Costs associated with our reorganization, including cost-savings initiatives (3) — — — 49,565 Adjusted EBITDA $ 441,764 $ 454,630 $ 1,139,419 $ 1,373,154 (1) Commencing during the quarter ended September 30, 2020, management began the implementation of certain transformation initiatives to enable the company to reduce costs, streamline operations and support future growth. The majority of expenses incurred were cash in nature and primarily related to employee separation benefits, lease termination costs and professional fees. See Note 15 for further discussion. ( 2 ) Primarily represents costs incurred related to workforce optimization initiated and executed in the second quarter of 2020 as part of management’s cost containment efforts in response to the COVID-19 pandemic. The charges are cash expenditures primarily for severance costs incurred related to this effort. Of the total costs, $7.4 million was included within the “Cost of revenue” line item and $30.2 million was included in the “Operating, administrative, and other” line item in the accompanying consolidated statements of operations for the nine months ended September 30, 2020. ( 3 ) Primarily represents severance costs related to headcount reductions in connection with our reorganization announced in the third quarter of 2018 that became effective January 1, 2019. Our CODM is not provided with total asset information by segment and accordingly, does not measure or allocate total assets on a segment basis. As a result, we have not disclosed any asset information by segment. Geographic Information Revenue in the table below is allocated based upon the country in which services are performed (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Revenue United States $ 3,162,235 $ 3,442,570 $ 9,632,592 $ 9,851,477 United Kingdom 736,927 758,084 2,188,822 2,003,671 All other countries 1,745,980 1,724,447 5,094,280 4,919,536 Total revenue $ 5,645,142 $ 5,925,101 $ 16,915,694 $ 16,774,684

Transformation Initiatives

Transformation Initiatives	9 Months Ended
	Sep. 30, 2020
Restructuring And Related Activities [Abstract]
Transformation Initiatives	1 5. Transformation Initiatives During the third quarter of 2020, management embarked on the implementation of certain transformation initiatives to enable the company to reduce costs, streamline operations and support future growth. As part of these initiatives, we incurred $55.4 million of costs, primarily in cash, related to employee separation benefits, lease termination costs and professional fees during the three months ended September 30, 2020 of which $38.3 million was recorded to the Advisory Services segment and $17.1 million to the Global Workplace Solutions segment. Of the total charges incurred, $15.7 million was included within the “Cost of revenue” line item and $39.7 million was included in the “Operating, administrative, and other” line item in the accompanying consolidated statements of operations for both the three and nine months ended September 30, 2020. Management continues to assess and modify these transformation initiatives based on the company’s overall strategic plan and evolving business conditions.

Warehouse Receivables & Wareh_2

Warehouse Receivables & Warehouse Lines of Credit (Tables)	9 Months Ended
	Sep. 30, 2020
Warehouse Receivables And Warehouse Lines Of Credit [Abstract]
Schedule of Warehouse Receivables	A rollforward of our warehouse receivables is as follows (dollars in thousands): Beginning balance at December 31, 2019 $ 993,058 Origination of mortgage loans 11,727,227 Gains (premiums on loan sales) 51,380 Proceeds from sale of mortgage loans: Sale of mortgage loans (11,513,901 ) Cash collections of premiums on loan sales (51,380 ) Proceeds from sale of mortgage loans (11,565,281 ) Net increase in mortgage servicing rights included in warehouse receivables 5,502 Ending balance at September 30, 2020 $ 1,211,886
Summary of Warehouse Lines of Credit in Place	The following table is a summary of our warehouse lines of credit in place as of September 30, 2020 and December 31, 2019 (dollars in thousands): September 30, 2020 December 31, 2019 Lender Current Maturity Pricing Maximum Facility Size Carrying Value Maximum Facility Size Carrying Value JP Morgan Chase Bank, N.A. (JP Morgan) (1) 10/19/2020 daily floating rate LIBOR plus 1.30% $ 985,000 $ 336,262 $ 985,000 $ 267,075 JP Morgan (2) 10/19/2020 daily floating rate LIBOR plus 2.75% 15,000 — 15,000 — Capital One, N.A. (Capital One) (3) 7/27/2020 daily one-month LIBOR plus 1.25% — — 200,000 39,538 Fannie Mae Multifamily As Soon As Pooled Plus Agreement and Multifamily As Soon As Pooled Sale Agreement (ASAP) Program Cancelable anytime daily one-month LIBOR plus 1.35%, with a LIBOR floor of 0.35% 450,000 65,505 450,000 360,784 TD Bank, N.A. (TD Bank) (4) (4) daily floating rate LIBOR plus 1.15% 800,000 596,021 800,000 92,266 Bank of America, N.A. (BofA) (5) 5/26/2021 (6) 350,000 189,290 350,000 189,465 BofA (7) daily one-month LIBOR plus 1.15% — — 250,000 17,457 MUFG Union Bank, N.A. (Union Bank) (8) (8) daily floating rate LIBOR plus 1.50% 300,000 4,756 350,000 10,590 $ 2,900,000 $ 1,191,834 $ 3,400,000 $ 977,175 (1) Effective October 19, 2020, this facility was amended and the maximum facility size was temporarily increased to $1,585.0 million and will revert back to $985.0 million on January 18, 2021. The interest rate increased to a LIBOR daily floating rate, plus 1.60% and the revised maturity date is October 18, 2021. (2) Effective October 19, 2020 the maturity date was extended to October 18, 2021. (3) This facility expired on July 27, 2020 and was not renewed. (4) Effective July 1, 2020, this facility was amended and provides for a maximum aggregate principal amount of $400.0 million, in addition to an uncommitted $400.0 million temporary line of credit, with an unchanged interest rate and revised maturity date of June 30, 2021. Effective September 21, 2020, CBRE utilized the additional $400.0 million as a temporary increase, which expires on December 31, 2020. (5) On June 10, 2020, this facility was amended with a revised maturity date of May 26, 2021. The total commitment amount of $350.0 million includes a separate sublimit borrowing in the amount of $100.0 million, which can be utilized for specific purposes as defined within the agreement. As of September 30, 2020, the sublimit borrowing has not been utilized. (6) Effective July 24, 2020, the interest rate on this facility was as follows: (i) a LIBOR daily floating rate for such day, plus 1.40% on the general facility and (ii) a LIBOR daily floating rate for such day, plus 1.75% on the separate sublimit borrowing. (7) This facility expired on May 27, 2020 and was not renewed. (8) On June 28, 2019, we added a new warehouse facility for $200.0 million with Union Bank. This facility contains an accordion feature which allows for temporary increases not to exceed an additional $150.0 million. If utilized, the additional borrowings must be in predefined multiples and are not to occur more than three times within twelve consecutive months. On June 26, 2020, the maturity date was extended to July 28, 2020 and on July 28, 2020 the maturity date was extended to August 27, 2020. Effective August 4, 2020, this facility was amended with a revised interest of LIBOR daily floating rate for such day, plus 1.50% and a maturity date of June 28, 2021. Additionally, this amendment decreased the accordion feature from $150.0 million to $100.0 million, with no changes to the predefined borrowing multiples. On September 22, 2020, the temporary increase of $100.0 million was utilized and expires on January 20, 2021.

Variable Interest Entities (V_2

Variable Interest Entities (VIEs) (Tables)	9 Months Ended
	Sep. 30, 2020
Equity Method Investments And Joint Ventures [Abstract]
Schedule of Maximum Exposure to Loss	As of September 30, 2020 and December 31, 2019, our maximum exposure to loss related to VIEs which are not consolidated was as follows (dollars in thousands): September 30, December 31, 2020 2019 Investments in unconsolidated subsidiaries $ 65,341 $ 30,484 Other current assets 4,219 4,307 Co-investment commitments 53,971 29,696 Maximum exposure to loss $ 123,531 $ 64,487

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present the fair value of assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 (dollars in thousands): As of September 30, 2020 Fair Value Measured and Recorded Using Level 1 Level 2 Level 3 Total Assets Available for sale securities: Debt securities: U.S. treasury securities $ 7,325 $ — $ — $ 7,325 Debt securities issued by U.S. federal agencies — 10,944 — 10,944 Corporate debt securities — 47,173 — 47,173 Asset-backed securities — 2,973 — 2,973 Collateralized mortgage obligations — 1,357 — 1,357 Total available for sale debt securities 7,325 62,447 — 69,772 Equity securities 40,089 — — 40,089 Warehouse receivables — 1,211,886 — 1,211,886 Total assets at fair value $ 47,414 $ 1,274,333 $ — $ 1,321,747 As of December 31, 2019 Fair Value Measured and Recorded Using Level 1 Level 2 Level 3 Total Assets Available for sale securities: Debt securities: U.S. treasury securities $ 6,998 $ — $ — $ 6,998 Debt securities issued by U.S. federal agencies — 10,639 — 10,639 Corporate debt securities — 29,098 — 29,098 Asset-backed securities — 5,152 — 5,152 Collateralized mortgage obligations — 2,222 — 2,222 Total available for sale debt securities 6,998 47,111 — 54,109 Equity securities 51,399 — — 51,399 Warehouse receivables — 993,058 — 993,058 Total assets at fair value $ 58,397 $ 1,040,169 $ — $ 1,098,566
Summary of Non-Recurring Fair Value Measurement	The following non-recurring fair value measurements were recorded for the nine months ended September 30, 2020 (dollars in thousands): Total Impairment Charges Net Carrying Value Fair Value Measured and for the as of Recorded Using Nine Months Ended September 30, 2020 Level 1 Level 2 Level 3 September 30, 2020 Property and equipment $ 9,565 $ — $ — $ 9,565 $ 21,663 Goodwill 431,389 — — 431,389 25,000 Other intangible assets 12,842 — — 12,842 28,508 Total $ 453,796 $ — $ — $ 453,796 $ 75,171 The following non-recurring fair value measurements were recorded for the nine months ended September 30, 2019 (dollars in thousands): Total Impairment Charges Net Carrying Value Fair Value Measured and for the as of Recorded Using Nine Months Ended September 30, 2019 Level 1 Level 2 Level 3 September 30, 2019 Other intangible assets $ 16,000 $ — $ — $ 16,000 $ 89,037

Investments in Unconsolidated_2

Investments in Unconsolidated Subsidiaries (Tables)	9 Months Ended
	Sep. 30, 2020
Equity Method Investments And Joint Ventures [Abstract]
Schedule of Condensed Financial Information of Equity Method Investments	Combined condensed financial information for the entities accounted for using the equity method is as follows (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Revenue $ 513,792 $ 375,717 $ 1,337,212 $ 1,083,664 Operating income 97,833 191,667 411,291 383,490 Net income 109,251 189,960 267,835 289,437

Long-Term Debt and Short-Term_2

Long-Term Debt and Short-Term Borrowings (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consists of the following (dollars in thousands): September 30, December 31, 2020 2019 Senior term loans, with interest ranging from 0.75% to 2.69%, due quarterly through 2024 $ 768,988 $ 748,531 4.875% senior notes due in 2026, net of unamortized discount 597,364 597,052 5.25% senior notes due in 2025, net of unamortized premium 425,814 425,952 Other 1,526 1,861 Total long-term debt 1,793,692 1,773,396 Less: current maturities of long-term debt (1,526 ) (1,814 ) Less: unamortized debt issuance costs (8,954 ) (10,337 ) Total long-term debt, net of current maturities $ 1,783,212 $ 1,761,245

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to our leases is as follows (dollars in thousands): September 30, December 31, Category Classification 2020 2019 Assets Operating lease assets Operating lease assets $ 1,057,992 $ 997,966 Financing lease assets Other assets, net 99,990 94,141 Total leased assets $ 1,157,982 $ 1,092,107 Liabilities Current: Operating Operating lease liabilities $ 189,641 $ 168,663 Financing Other current liabilities 37,780 34,966 Non-current: Operating Non-current operating lease liabilities 1,125,005 1,057,758 Financing Other liabilities 62,331 60,001 Total lease liabilities $ 1,414,757 $ 1,321,388
Supplemental Cash Flow Information and Non-Cash Activity Related to Leases	Supplemental cash flow information and non-cash activity related to our leases are as follows (dollars in thousands): Nine Months Ended September 30, 2020 2019 Right-of-use assets obtained in exchange for new operating lease liabilities $ 175,909 $ 149,259 Right-of-use assets obtained in exchange for new financing lease liabilities 34,169 40,819 Other non-cash increases in operating lease right-of-use assets (1) 6,729 35,510 Other non-cash decreases in financing lease right-of-use assets (1) (471 ) (1,011 ) ( 1 ) The non-cash activity in the right-of-use assets resulted from lease modifications and remeasurements.

Income Per Share and Stockhol_2

Income Per Share and Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share And Stockholders Equity [Abstract]
Calculations of Basic and Diluted Income Per Share	The calculations of basic and diluted income per share attributable to CBRE Group, Inc. shareholders are as follows (dollars in thousands, except share data): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Basic Income Per Share Net income attributable to CBRE Group, Inc. shareholders $ 184,132 $ 256,599 $ 438,224 $ 644,739 Weighted average shares outstanding for basic income per share 335,287,245 336,203,747 335,128,531 336,149,719 Basic income per share attributable to CBRE Group, Inc. shareholders $ 0.55 $ 0.76 $ 1.31 $ 1.92 Diluted Income Per Share Net income attributable to CBRE Group, Inc. shareholders $ 184,132 $ 256,599 $ 438,224 $ 644,739 Weighted average shares outstanding for basic income per share: 335,287,245 336,203,747 335,128,531 336,149,719 Dilutive effect of contingently issuable shares 2,378,603 4,896,435 3,127,328 4,440,288 Weighted average shares outstanding for diluted income per share 337,665,848 341,100,182 338,255,859 340,590,007 Diluted income per share attributable to CBRE Group, Inc. shareholders $ 0.55 $ 0.75 $ 1.30 $ 1.89

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Disaggregation of Revenue from Contracts with Customers	Disaggregated Revenue The following tables represent a disaggregation of revenue from contracts with customers for the three and nine months ended September 30, 2020 and 2019 by type of service and/or segment (dollars in thousands): Three Months Ended September 30, 2020 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 3,721,365 $ — $ 3,721,365 Advisory leasing 536,132 — — 536,132 Advisory sales 346,650 — — 346,650 Property and advisory project management 545,325 — — 545,325 Valuation 139,019 — — 139,019 Commercial mortgage origination (1) 20,040 — — 20,040 Loan servicing (2) 9,860 — — 9,860 Investment management — — 99,935 99,935 Development services — — 68,850 68,850 Topic 606 Revenue 1,597,026 3,721,365 168,785 5,487,176 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 108,986 — — 108,986 Loan servicing 48,153 — — 48,153 Development services (3) — — 827 827 Total Out of Scope of Topic 606 Revenue 157,139 — 827 157,966 Total revenue $ 1,754,165 $ 3,721,365 $ 169,612 $ 5,645,142 Three Months Ended September 30, 2019 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 3,555,176 $ — $ 3,555,176 Advisory leasing 781,246 — — 781,246 Advisory sales 526,104 — — 526,104 Property and advisory project management 558,039 — — 558,039 Valuation 154,861 — — 154,861 Commercial mortgage origination (1) 46,787 — — 46,787 Loan servicing (2) 8,599 — — 8,599 Investment management — — 104,927 104,927 Development services — — 24,286 24,286 Topic 606 Revenue 2,075,636 3,555,176 129,213 5,760,025 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 117,052 — — 117,052 Loan servicing 48,024 — — 48,024 Total Out of Scope of Topic 606 Revenue 165,076 — — 165,076 Total revenue $ 2,240,712 $ 3,555,176 $ 129,213 $ 5,925,101 (1) We earn fees for arranging financing for borrowers with third-party lender contacts. Such fees are in scope of Topic 606. (2) Loan servicing fees earned from servicing contracts for which we do not hold mortgage servicing rights are in scope of Topic 606. (3) Out of scope revenue for development services represents selling profit from transfers of sales-type leases in the scope of Topic 842. Nine Months Ended September 30, 2020 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 11,134,383 $ — $ 11,134,383 Advisory leasing 1,653,367 — — 1,653,367 Advisory sales 1,018,853 — — 1,018,853 Property and advisory project management 1,623,486 — — 1,623,486 Valuation 418,616 — — 418,616 Commercial mortgage origination (1) 78,030 — — 78,030 Loan servicing (2) 30,290 — — 30,290 Investment management — — 324,745 324,745 Development services — — 202,776 202,776 Topic 606 Revenue 4,822,642 11,134,383 527,521 16,484,546 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 274,523 — — 274,523 Loan servicing 141,453 — — 141,453 Development services (3) — — 15,172 15,172 Total Out of Scope of Topic 606 Revenue 415,976 — 15,172 431,148 Total revenue $ 5,238,618 $ 11,134,383 $ 542,693 $ 16,915,694 Nine Months Ended September 30, 2019 Advisory Services Global Workplace Solutions Real Estate Investments Consolidated Topic 606 Revenue: Global workplace solutions $ — $ 10,106,543 $ — $ 10,106,543 Advisory leasing 2,221,674 — — 2,221,674 Advisory sales 1,378,317 — — 1,378,317 Property and advisory project management 1,634,745 — — 1,634,745 Valuation 442,238 — — 442,238 Commercial mortgage origination (1) 102,471 — — 102,471 Loan servicing (2) 22,669 — — 22,669 Investment management — — 312,881 312,881 Development services — — 101,188 101,188 Topic 606 Revenue 5,802,114 10,106,543 414,069 16,322,726 Out of Scope of Topic 606 Revenue: Commercial mortgage origination 322,246 — — 322,246 Loan servicing 129,712 — — 129,712 Total Out of Scope of Topic 606 Revenue 451,958 — — 451,958 Total revenue $ 6,254,072 $ 10,106,543 $ 414,069 $ 16,774,684 (1) We earn fees for arranging financing for borrowers with third-party lender contacts. Such fees are in scope of Topic 606. (2) Loan servicing fees earned from servicing contracts for which we do not hold mortgage servicing rights are in scope of Topic 606. (3) Out of scope revenue for development services represents selling profit from transfers of sales-type leases in the scope of Topic 842.

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Summarized Financial Information by Segment	Summarized financial information by segment is as follows (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Revenue Advisory Services $ 1,754,165 $ 2,240,712 $ 5,238,618 $ 6,254,072 Global Workplace Solutions 3,721,365 3,555,176 11,134,383 10,106,543 Real Estate Investments 169,612 129,213 542,693 414,069 Total revenue $ 5,645,142 $ 5,925,101 $ 16,915,694 $ 16,774,684 Adjusted EBITDA Advisory Services $ 236,369 $ 345,482 $ 662,129 $ 942,860 Global Workplace Solutions 140,523 95,209 355,768 298,948 Real Estate Investments 64,872 13,939 121,522 131,346 Total Adjusted EBITDA $ 441,764 $ 454,630 $ 1,139,419 $ 1,373,154
Adjusted EBITDA Calculation by Segment	Adjusted EBITDA is calculated as follows (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Net income attributable to CBRE Group, Inc. $ 184,132 $ 256,599 $ 438,224 $ 644,739 Add: Depreciation and amortization 127,725 111,560 357,903 323,862 Asset impairments — — 75,171 89,037 Interest expense, net of interest income 17,829 21,846 51,795 67,638 Write-off of financing costs on extinguished debt — — — 2,608 Provision for income taxes 49,062 63,468 119,047 169,867 EBITDA 378,748 453,473 1,042,140 1,297,751 Adjustments: Costs associated with transformation initiatives (1) 55,374 — 55,374 — Carried interest incentive compensation expense (reversal) to align with the timing of associated revenue 3,767 (3,360 ) (11,517 ) 12,284 Impact of fair value adjustments to real estate assets acquired in the Telford Acquisition (purchase accounting) that were sold in period 2,289 — 9,289 — Costs incurred related to legal entity restructuring 1,061 — 4,995 — Integration and other costs related to acquisitions 525 4,517 1,544 13,554 Costs associated with workforce optimization efforts (2) — — 37,594 — Costs associated with our reorganization, including cost-savings initiatives (3) — — — 49,565 Adjusted EBITDA $ 441,764 $ 454,630 $ 1,139,419 $ 1,373,154 (1) Commencing during the quarter ended September 30, 2020, management began the implementation of certain transformation initiatives to enable the company to reduce costs, streamline operations and support future growth. The majority of expenses incurred were cash in nature and primarily related to employee separation benefits, lease termination costs and professional fees. See Note 15 for further discussion. ( 2 ) Primarily represents costs incurred related to workforce optimization initiated and executed in the second quarter of 2020 as part of management’s cost containment efforts in response to the COVID-19 pandemic. The charges are cash expenditures primarily for severance costs incurred related to this effort. Of the total costs, $7.4 million was included within the “Cost of revenue” line item and $30.2 million was included in the “Operating, administrative, and other” line item in the accompanying consolidated statements of operations for the nine months ended September 30, 2020. ( 3 ) Primarily represents severance costs related to headcount reductions in connection with our reorganization announced in the third quarter of 2018 that became effective January 1, 2019.
Summary of Geographic Information	Revenue in the table below is allocated based upon the country in which services are performed (dollars in thousands): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Revenue United States $ 3,162,235 $ 3,442,570 $ 9,632,592 $ 9,851,477 United Kingdom 736,927 758,084 2,188,822 2,003,671 All other countries 1,745,980 1,724,447 5,094,280 4,919,536 Total revenue $ 5,645,142 $ 5,925,101 $ 16,915,694 $ 16,774,684

Telford Acquisition - Additiona

Telford Acquisition - Additional Information (Detail) - Oct. 01, 2019 - Telford Homes Plc [Member] £ / shares in Units, £ in Millions, $ in Millions	USD ($)	GBP (£)£ / shares
Business Acquisition [Line Items]
Date of business purchase agreement	Oct. 1, 2019
Share price		£ 3.50
Business combination, cash consideration	$ 328.5	£ 267.1

Warehouse Receivables & Wareh_3

Warehouse Receivables & Warehouse Lines of Credit - Additional Information (Detail) - Warehouse Agreement Borrowings [Member]	9 Months Ended
	Sep. 30, 2020USD ($)
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Period of repayment for warehouse lines of credit	1 month
Lines of credit principal outstanding	$ 1,800,000,000

Warehouse Receivables & Wareh_4

Warehouse Receivables & Warehouse Lines of Credit - Schedule of Warehouse Receivables (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Warehouse Receivables And Warehouse Lines Of Credit [Abstract]
Beginning balance at December 31, 2019	$ 993,058
Origination of mortgage loans	11,727,227	$ 15,381,864
Gains (premiums on loan sales)	51,380
Proceeds from sale of mortgage loans:
Sale of mortgage loans	(11,513,901)
Cash collections of premiums on loan sales	(51,380)
Proceeds from sale of mortgage loans	(11,565,281)	$ (15,786,800)
Net increase in mortgage servicing rights included in warehouse receivables	5,502
Ending balance at September 30, 2020	$ 1,211,886

Warehouse Receivables & Wareh_5

Warehouse Receivables & Warehouse Lines of Credit - Summary of Warehouse Lines of Credit in Place (Detail) - USD ($)	Sep. 22, 2020	Sep. 21, 2020	Aug. 04, 2020	Jul. 28, 2020	Jul. 01, 2020	Jun. 26, 2020	Jun. 10, 2020	Sep. 30, 2020	Dec. 31, 2019	Jun. 28, 2019
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Carrying Value								$ 1,191,834,000	$ 977,175,000
Warehouse Agreement Borrowings [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity	Jan. 20, 2021		Jun. 28, 2021
Maximum Facility Size	$ 100,000,000		$ 100,000,000					2,900,000,000	3,400,000,000
Carrying Value								$ 1,191,834,000	977,175,000
Line of credit over LIBOR rate			1.50%
Warehouse Agreement Borrowings [Member] | JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 1.30%, maturing October 19, 2020 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity								Oct. 19, 2020
Maximum Facility Size								$ 985,000,000	985,000,000
Carrying Value								$ 336,262,000	$ 267,075,000
Line of credit over LIBOR rate								1.30%	1.30%
Warehouse Agreement Borrowings [Member] | JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 2.75%, maturing October 19, 2020 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity								Oct. 19, 2020
Maximum Facility Size								$ 15,000,000	$ 15,000,000
Line of credit over LIBOR rate								2.75%	2.75%
Warehouse Agreement Borrowings [Member] | Capital One [Member] | Pricing at daily one-month LIBOR plus 1.25%, maturing July 27, 2020 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity								Jul. 27, 2020
Maximum Facility Size									$ 200,000,000
Carrying Value									$ 39,538,000
Line of credit over LIBOR rate								1.25%	1.25%
Warehouse Agreement Borrowings [Member] | Fannie Mae ASAP Program [Member] | Pricing at daily one-month LIBOR plus 1.35%, with a LIBOR floor of 0.35%, Cancelable anytime [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity								Cancelable anytime
Maximum Facility Size								$ 450,000,000	$ 450,000,000
Carrying Value								$ 65,505,000	$ 360,784,000
Line of credit over LIBOR rate								1.35%	1.35%
Line of credit, LIBOR floor rate								0.35%	0.35%
Warehouse Agreement Borrowings [Member] | TD Bank [Member] | Pricing at daily floating rate LIBOR plus 1.15%, maturing June 30, 2021 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity		Dec. 31, 2020			Jun. 30, 2021
Maximum Facility Size					$ 400,000,000			$ 800,000,000	$ 800,000,000
Carrying Value								$ 596,021,000	$ 92,266,000
Line of credit over LIBOR rate								1.15%	1.15%
Warehouse Agreement Borrowings [Member] | Bank of America (BofA) [Member] | LIBOR daily floating rate plus 1.50% on general facility and LIBOR daily floating rate plus 1.75% on separate sublimit borrowing, maturing on May 26, 2021 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity							May 26, 2021	May 26, 2021
Maximum Facility Size							$ 350,000,000	$ 350,000,000	$ 350,000,000
Carrying Value								$ 189,290,000	189,465,000
Warehouse Agreement Borrowings [Member] | Bank of America (BofA) [Member] | Pricing at daily one-month LIBOR plus 1.15%, maturing May 27, 2020 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity								May 27, 2020
Maximum Facility Size									250,000,000
Carrying Value									$ 17,457,000
Line of credit over LIBOR rate								1.15%	1.15%
Warehouse Agreement Borrowings [Member] | MUFG Union Bank, N.A. (Union Bank) [Member] | Pricing at daily floating rate LIBOR plus 1.20%, maturing June 28, 2020 [Member]
Warehouse Receivables And Warehouse Lines Of Credit [Line Items]
Current Maturity				Aug. 27, 2020		Jul. 28, 2020
Maximum Facility Size								$ 300,000,000	$ 350,000,000	$ 200,000,000
Carrying Value								$ 4,756,000	$ 10,590,000
Line of credit over LIBOR rate								1.50%	1.50%

Warehouse Receivables & Wareh_6

Warehouse Receivables & Warehouse Lines of Credit - Summary of Warehouse Lines of Credit in Place (Parenthetical) (Detail) - Warehouse Agreement Borrowings [Member] - USD ($)

Jan. 18, 2021

Oct. 19, 2020

Sep. 22, 2020

Sep. 21, 2020

Aug. 04, 2020

Jul. 28, 2020

Jul. 24, 2020

Jul. 01, 2020

Jun. 26, 2020

Jun. 10, 2020

Sep. 30, 2020

Dec. 31, 2019

Jun. 28, 2019

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 100,000,000

$ 100,000,000

$ 2,900,000,000

$ 3,400,000,000

Current Maturity

Jan. 20, 2021

Jun. 28, 2021

Line of credit over LIBOR rate

1.50%

Maximum [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Additional line of credit

$ 150,000,000

JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 1.30%, maturing October 19, 2020 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 985,000,000

$ 985,000,000

Current Maturity

Oct. 19, 2020

Line of credit over LIBOR rate

1.30%

1.30%

JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 1.30%, maturing October 19, 2020 [Member] | Subsequent Event [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 1,585,000,000

JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 1.30%, maturing October 19, 2020 [Member] | Forecast [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 985,000,000

Current Maturity

Oct. 18, 2021

Line of credit over LIBOR rate

1.60%

JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 2.75%, maturing October 19, 2020 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 15,000,000

$ 15,000,000

Current Maturity

Oct. 19, 2020

Line of credit over LIBOR rate

2.75%

2.75%

JP Morgan [Member] | Pricing at daily floating rate LIBOR plus 2.75%, maturing October 19, 2020 [Member] | Subsequent Event [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Current Maturity

Oct. 18, 2021

Capital One [Member] | Pricing at daily one-month LIBOR plus 1.25%, maturing July 27, 2020 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 200,000,000

Current Maturity

Jul. 27, 2020

Line of credit over LIBOR rate

1.25%

1.25%

TD Bank [Member] | Pricing at daily floating rate LIBOR plus 1.15%, maturing June 30, 2021 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 400,000,000

$ 800,000,000

$ 800,000,000

Current Maturity

Dec. 31, 2020

Jun. 30, 2021

Line of credit over LIBOR rate

1.15%

1.15%

Additional line of credit

$ 400,000,000

Bank of America (BofA) [Member] | LIBOR daily floating rate plus 1.50% on general facility and LIBOR daily floating rate plus 1.75% on separate sublimit borrowing, maturing on May 26, 2021 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 350,000,000

$ 350,000,000

$ 350,000,000

Current Maturity

May 26, 2021

May 26, 2021

Bank of America (BofA) [Member] | LIBOR daily floating rate plus 1.50% on general facility and LIBOR daily floating rate plus 1.75% on separate sublimit borrowing, maturing on May 26, 2021 [Member] | Sublimit Borrowing [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 100,000,000

Line of credit over LIBOR rate

1.75%

Bank of America (BofA) [Member] | LIBOR daily floating rate plus 1.50% on general facility and LIBOR daily floating rate plus 1.75% on separate sublimit borrowing, maturing on May 26, 2021 [Member] | General Facility [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Line of credit over LIBOR rate

1.40%

Bank of America (BofA) [Member] | Pricing at daily one-month LIBOR plus 1.15%, maturing May 27, 2020 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 250,000,000

Current Maturity

May 27, 2020

Line of credit over LIBOR rate

1.15%

1.15%

MUFG Union Bank, N.A. (Union Bank) [Member] | Pricing at daily floating rate LIBOR plus 1.20%, maturing June 28, 2020 [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Maximum Facility Size

$ 300,000,000

$ 350,000,000

200,000,000

Current Maturity

Aug. 27, 2020

Jul. 28, 2020

Line of credit over LIBOR rate

1.50%

1.50%

MUFG Union Bank, N.A. (Union Bank) [Member] | Pricing at daily floating rate LIBOR plus 1.20%, maturing June 28, 2020 [Member] | Maximum [Member]

Warehouse Receivables And Warehouse Lines Of Credit [Line Items]

Additional line of credit

$ 150,000,000

Variable Interest Entities (V_3

Variable Interest Entities (VIEs) - Schedule of Maximum Exposure to Loss (Detail) - Non-Consolidated Variable Interest Entities [Member] - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Investments in unconsolidated subsidiaries	$ 65,341	$ 30,484
Other current assets	4,219	4,307
Co-investment commitments	53,971	29,696
Maximum exposure to loss	$ 123,531	$ 64,487

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments in unconsolidated subsidiaries at fair value using NAV	$ 59,000		$ 45,200
Non-cash asset impairment charges	$ 75,171	$ 89,037
Intangible asset impairment		$ 89,000
4.875% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate of long-term debt	4.875%		4.875%
5.25% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate of long-term debt	5.25%		5.25%
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior term loans	$ 752,700		$ 745,500
Estimated Fair Value [Member] | 4.875% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	697,400		670,700
Estimated Fair Value [Member] | 5.25% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	482,600		478,300
Actual Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior term loans	765,700		744,600
Actual Carrying Value [Member] | 4.875% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	594,300		593,600
Actual Carrying Value [Member] | 5.25% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	423,200		$ 423,000
Global Workplace Solutions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-cash asset impairment charges	50,200
Real Estate Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-cash goodwill impairment charge	$ 25,000

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warehouse receivables	$ 1,211,886	$ 993,058
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	69,772	54,109
Equity securities	40,089	51,399
Warehouse receivables	1,211,886	993,058
Total assets at fair value	1,321,747	1,098,566
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	7,325	6,998
Equity securities	40,089	51,399
Total assets at fair value	47,414	58,397
Recurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	62,447	47,111
Warehouse receivables	1,211,886	993,058
Total assets at fair value	1,274,333	1,040,169
Recurring [Member] | U.S. treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	7,325	6,998
Recurring [Member] | U.S. treasury securities [Member] | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	7,325	6,998
Recurring [Member] | Debt securities issued by U.S. federal agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	10,944	10,639
Recurring [Member] | Debt securities issued by U.S. federal agencies [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	10,944	10,639
Recurring [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	47,173	29,098
Recurring [Member] | Corporate debt securities [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	47,173	29,098
Recurring [Member] | Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	2,973	5,152
Recurring [Member] | Asset-backed securities [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	2,973	5,152
Recurring [Member] | Collateralized mortgage obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	1,357	2,222
Recurring [Member] | Collateralized mortgage obligations [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	$ 1,357	$ 2,222

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Non-Recurring Fair Value Measurement (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	$ 818,333		$ 836,206
Goodwill, Net Carrying Value	3,744,269		3,753,493
Other intangible assets, Net Carrying Value	1,333,917		1,379,546
Other intangible assets, Total Impairment Charges		$ 89,000
Net Carrying Value	16,347,076		$ 16,197,196
Total Impairment Charges	75,171	89,037
Fair Value Measurements, Non-recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	9,565
Property and equipment, Total Impairment Charges	21,663
Goodwill, Net Carrying Value	431,389
Goodwill, Total Impairment Charges	25,000
Other intangible assets, Net Carrying Value	12,842	16,000
Other intangible assets, Total Impairment Charges	28,508	89,037
Net Carrying Value	453,796
Total Impairment Charges	75,171
Fair Value Measurements, Non-recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, Fair Value Measured and Recorded Using	9,565
Goodwill, Fair Value Measured and Recorded Using	431,389
Other intangible assets, Fair Value Measured and Recorded Using	12,842	$ 16,000
Fair Value Measured and Recorded Using	$ 453,796

Investments in Unconsolidated_3

Investments in Unconsolidated Subsidiaries - Additional Information (Detail)	Sep. 30, 2020
Maximum [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method investments in unconsolidated subsidiaries, variations in ownership percentage	50.00%

Investments in Unconsolidated_4

Investments in Unconsolidated Subsidiaries - Schedule of Condensed Financial Information of Equity Method Investments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Revenue	$ 5,645,142	$ 5,925,101	$ 16,915,694	$ 16,774,684
Operating income	211,408	316,630	525,863	746,034
Net income	184,840	258,053	440,482	652,317
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Revenue	513,792	375,717	1,337,212	1,083,664
Operating income	97,833	191,667	411,291	383,490
Net income	$ 109,251	$ 189,960	$ 267,835	$ 289,437

Long-Term Debt and Short-Term_3

Long-Term Debt and Short-Term Borrowings - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 1,793,692	$ 1,773,396
Less: current maturities of long-term debt	(1,526)	(1,814)
Less: unamortized debt issuance costs	(8,954)	(10,337)
Total long-term debt, net of current maturities	1,783,212	1,761,245
Senior secured term loans [Member]
Debt Instrument [Line Items]
Total long-term debt	768,988	748,531
Other Long Term Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	1,526	1,861
4.875% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	597,364	597,052
5.25% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 425,814	$ 425,952

Long-Term Debt and Short-Term_4

Long-Term Debt and Short-Term Borrowings - Schedule of Long-Term Debt (Parenthetical) (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Senior secured term loans [Member]
Debt Instrument [Line Items]
Due date of debt instrument	2024	2024
Senior secured term loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt	0.75%	0.75%
Senior secured term loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt	2.69%	2.69%
4.875% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt	4.875%	4.875%
4.875% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt	4.875%	4.875%
Due date of debt instrument	2026	2026
5.25% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt	5.25%	5.25%
5.25% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt	5.25%	5.25%
Due date of debt instrument	2025	2025

Long-Term Debt and Short-Term_5

Long-Term Debt and Short-Term Borrowings - Long-Term Debt - Additional Information (Detail)	Oct. 31, 2017USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020EUR (€)	Dec. 31, 2019
Debt Instrument [Line Items]
Borrowings from line of credit		$ 835,671,000	$ 2,683,000,000
Minimum coverage ratio of EBITDA to total interest expense expressed in percentage		200.00%
Maximum leverage ratio of total debt less available cash to EBITDA expressed in percentage		425.00%
Maximum leverage ratio during first four quarter that qualified acquisition is consummated		475.00%
Coverage ratio of EBITDA to total interest expense expressed in percentage		2368.00%		2368.00%
Leverage ratio of total debt less available cash to EBITDA expressed in percentage		25.00%		25.00%
4.875% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt		4.875%		4.875%	4.875%
5.25% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate of long-term debt		5.25%		5.25%	5.25%
Tranche A term loan facility [Member] | 2019 Credit Agreement [Member]
Debt Instrument [Line Items]
Borrowings from line of credit	$ 300,000,000
Amounts available to borrow under credit agreement		$ 300,000,000
Termination date		Mar. 4, 2024
Maximum leverage ratio		250.00%
Revolving credit facility [Member] | 2019 Credit Agreement [Member]
Debt Instrument [Line Items]
Amounts available to borrow under credit agreement		$ 2,800,000,000
Termination date		Mar. 4, 2024
Euro term loan facility [Member] | 2019 Credit Agreement [Member]
Debt Instrument [Line Items]
Term loan facility due and payable | €				€ 400,000,000
Debt instrument, maturity date		Dec. 20, 2023

Long-Term Debt and Short-Term_6

Long-Term Debt and Short-Term Borrowings - Revolving Credit Facility - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020USD ($)
Debt Instrument [Line Items]
Letters of credit outstanding amount	$ 104,400,000
2019 Credit Agreement [Member] | Revolving credit facility [Member]
Debt Instrument [Line Items]
Amounts available to borrow under credit agreement	2,800,000,000
Revolving credit facility	0
Letters of credit outstanding amount	$ 2,000,000
2019 Credit Agreement [Member] | Revolving credit facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit Agreement applicable fixed rate spread	0.68%
Credit Agreement applicable daily rate spread	0.00%
2019 Credit Agreement [Member] | Revolving credit facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit Agreement applicable fixed rate spread	1.075%
Credit Agreement applicable daily rate spread	0.075%
2019 Credit Agreement [Member] | Canadian, Australian and New Zealand subsidiaries [Member]
Debt Instrument [Line Items]
Amounts available to borrow under credit agreement	$ 200,000,000
2019 Credit Agreement [Member] | U.K. subsidiaries [Member]
Debt Instrument [Line Items]
Amounts available to borrow under credit agreement	$ 300,000,000

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Operating lease assets	$ 1,057,992	$ 997,966
Financing lease assets	$ 99,990	$ 94,141
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets	us-gaap:OtherAssets
Total leased assets	$ 1,157,982	$ 1,092,107
Current:
Operating	189,641	168,663
Financing	$ 37,780	$ 34,966
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Non-current:
Operating	$ 1,125,005	$ 1,057,758
Financing	$ 62,331	$ 60,001
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Total lease liabilities	$ 1,414,757	$ 1,321,388

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information and Non-Cash Activity Related to Leases (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 175,909	$ 149,259
Right-of-use assets obtained in exchange for new financing lease liabilities	34,169	40,819
Other non-cash increases in operating lease right-of-use assets	6,729	35,510
Other non-cash decreases in financing lease right-of-use assets	$ (471)	$ (1,011)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 104,400,000
Accrued loan loss	56,500,000	$ 37,000,000
Assets available for recourse	$ 928,000,000
Letters of credit expiration date	2021-10
Guarantees total	$ 72,400,000
Commitments to investment in future real estate investment	84,000,000
Commitments to investment in unconsolidated real estate subsidiary	$ 41,000,000
Maximum [Member]
Loss Contingencies [Line Items]
Co-investments typically range	2.00%
COVID 19 Pandemic [Member]
Loss Contingencies [Line Items]
Advances for principal and interest	$ 5,200,000
Warehouse Receivable [Member]
Loss Contingencies [Line Items]
Warehouse receivables	556,400,000
Funded loans subject to loss sharing arrangements [Member]
Loss Contingencies [Line Items]
Funded loans unpaid principal	26,200,000,000
Letters of credit outstanding	85,000,000	72,000,000
SBL Program [Member]
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 5,000,000	$ 5,000,000
Percentage of maximum original principal amount loan loss	10.00%
Funded loans not subject to loss sharing arrangements [Member]
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 90,000,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 49,062	$ 63,468		$ 119,047	$ 169,867
Decrease in income taxes due to decrease of pre-tax book income	$ 14,400			$ 50,900
Effective tax rate	21.00%	19.70%		21.30%	20.70%
Federal statutory tax rate	21.00%			21.00%
Unrecognized tax benefits	$ 142,200			$ 142,200
Increase in unrecognized tax benefits			$ 6,400	$ 1,000
Unrecognized tax benefits expiration of statute of limitations in various tax jurisdictions	$ 5,400

Income Per Share and Stockhol_3

Income Per Share and Stockholders' Equity - Calculations of Basic and Diluted Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic Income Per Share
Net income attributable to CBRE Group, Inc. shareholders	$ 184,132	$ 256,599	$ 438,224	$ 644,739
Weighted average shares outstanding for basic income per share	335,287,245	336,203,747	335,128,531	336,149,719
Basic income per share attributable to CBRE Group, Inc. shareholders	$ 0.55	$ 0.76	$ 1.31	$ 1.92
Diluted Income Per Share
Net income attributable to CBRE Group, Inc. shareholders	$ 184,132	$ 256,599	$ 438,224	$ 644,739
Weighted average shares outstanding for basic income per share	335,287,245	336,203,747	335,128,531	336,149,719
Dilutive effect of contingently issuable shares	2,378,603	4,896,435	3,127,328	4,440,288
Weighted average shares outstanding for diluted income per share	337,665,848	341,100,182	338,255,859	340,590,007
Diluted income per share attributable to CBRE Group, Inc. shareholders	$ 0.55	$ 0.75	$ 1.30	$ 1.89

Income Per Share and Stockhol_4

Income Per Share and Stockholders' Equity - Additional Information (Detail) - USD ($)

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Mar. 31, 2020

Feb. 28, 2019

Jan. 31, 2019

Oct. 31, 2016

Sep. 30, 2020

Jun. 30, 2020

Sep. 30, 2019

Sep. 30, 2020

Sep. 30, 2019

Dec. 31, 2019

Nov. 30, 2019

Aug. 31, 2019

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Shares repurchased during the period, shares

0

0

Shares repurchased during the period, value

$ 49,000,000

$ 50,028,000

$ 94,088,000

Capacity remaining under current stock repurchase program

$ 350,000,000

350,000,000

Exchange Act (10b5-1 Plan) [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Shares repurchased during the period, value

$ 45,100,000

Exchange Act (10b5-1 Plan) [Member] | March 2019 Program [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Shares repurchased during the period, value

$ 100,000,000

Class A Common Stock [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Authorized share repurchase amount

$ 500,000,000

500,000,000

Authorized share repurchase term

3 years

3 years

Shares repurchased during the period, value

$ 11,000

$ 11,000

Authorized share additional repurchase amount

$ 100,000,000

$ 100,000,000

Class A Common Stock [Member] | Maximum [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Authorized share repurchase amount

$ 300,000,000

$ 250,000,000

Class A Common Stock [Member] | Exchange Act (10b5-1 Plan) [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Shares repurchased during the period, shares

1,050,084

1,144,449

Shares repurchased during the period, value

$ 50,000,000

Average price per share

$ 47.62

$ 39.38

Class A Common Stock [Member] | Exchange Act (10b5-1 Plan) [Member] | March 2019 Program [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Shares repurchased during the period, shares

1,936,458

Average price per share

$ 51.64

Contingently Issuable Shares [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Shares excluded in computation of diluted income per share

1,294,385

320,154

1,191,464

447,687

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Disaggregation of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	$ 5,487,176	$ 5,760,025	$ 16,484,546	$ 16,322,726
Out of Scope of Topic 606 Revenue	157,966	165,076	431,148	451,958
Total revenue	5,645,142	5,925,101	16,915,694	16,774,684
Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	1,597,026	2,075,636	4,822,642	5,802,114
Out of Scope of Topic 606 Revenue	157,139	165,076	415,976	451,958
Total revenue	1,754,165	2,240,712	5,238,618	6,254,072
Global Workplace Solutions [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	3,721,365	3,555,176	11,134,383	10,106,543
Total revenue	3,721,365	3,555,176	11,134,383	10,106,543
Real Estate Investments [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	168,785	129,213	527,521	414,069
Out of Scope of Topic 606 Revenue	827		15,172
Total revenue	169,612	129,213	542,693	414,069
Global Workplace Solutions [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	3,721,365	3,555,176	11,134,383	10,106,543
Global Workplace Solutions [Member] | Global Workplace Solutions [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	3,721,365	3,555,176	11,134,383	10,106,543
Advisory Leasing [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	536,132	781,246	1,653,367	2,221,674
Advisory Leasing [Member] | Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	536,132	781,246	1,653,367	2,221,674
Advisory Sales [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	346,650	526,104	1,018,853	1,378,317
Advisory Sales [Member] | Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	346,650	526,104	1,018,853	1,378,317
Property and Advisory Project Management [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	545,325	558,039	1,623,486	1,634,745
Property and Advisory Project Management [Member] | Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	545,325	558,039	1,623,486	1,634,745
Valuation [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	139,019	154,861	418,616	442,238
Valuation [Member] | Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	139,019	154,861	418,616	442,238
Commercial Mortgage Origination [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	20,040	46,787	78,030	102,471
Out of Scope of Topic 606 Revenue	108,986	117,052	274,523	322,246
Commercial Mortgage Origination [Member] | Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	20,040	46,787	78,030	102,471
Out of Scope of Topic 606 Revenue	108,986	117,052	274,523	322,246
Loan Servicing [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	9,860	8,599	30,290	22,669
Out of Scope of Topic 606 Revenue	48,153	48,024	141,453	129,712
Loan Servicing [Member] | Advisory Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	9,860	8,599	30,290	22,669
Out of Scope of Topic 606 Revenue	48,153	48,024	141,453	129,712
Investment Management [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	99,935	104,927	324,745	312,881
Investment Management [Member] | Real Estate Investments [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	99,935	104,927	324,745	312,881
Development Services [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	68,850	24,286	202,776	101,188
Out of Scope of Topic 606 Revenue	827		15,172
Development Services [Member] | Real Estate Investments [Member]
Disaggregation Of Revenue [Line Items]
Topic 606 Revenue	68,850	$ 24,286	202,776	$ 101,188
Out of Scope of Topic 606 Revenue	$ 827		$ 15,172

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Contract assets	$ 459,800	$ 529,800
Contract assets, current	282,031	328,012
Contract liabilities	134,300	115,000
Contract liabilities, current	132,499	$ 108,671
Recognized revenue included in contract liability	$ 77,900

Segments - Additional Informati

Segments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020Segment
Segment Reporting [Abstract]
Global business segments	3

Segments - Summarized Financial

Segments - Summarized Financial Information by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 5,645,142	$ 5,925,101	$ 16,915,694	$ 16,774,684
Adjusted EBITDA	441,764	454,630	1,139,419	1,373,154
Advisory Services [Member]
Segment Reporting Information [Line Items]
Revenue	1,754,165	2,240,712	5,238,618	6,254,072
Adjusted EBITDA	236,369	345,482	662,129	942,860
Global Workplace Solutions [Member]
Segment Reporting Information [Line Items]
Revenue	3,721,365	3,555,176	11,134,383	10,106,543
Adjusted EBITDA	140,523	95,209	355,768	298,948
Real Estate Investments [Member]
Segment Reporting Information [Line Items]
Revenue	169,612	129,213	542,693	414,069
Adjusted EBITDA	$ 64,872	$ 13,939	$ 121,522	$ 131,346

Segments - Adjusted EBITDA Calc

Segments - Adjusted EBITDA Calculation by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting [Abstract]
Net income attributable to CBRE Group, Inc.	$ 184,132	$ 256,599	$ 438,224	$ 644,739
Depreciation and amortization	127,725	111,560	357,903	323,862
Asset impairments			75,171	89,037
Interest expense, net of interest income	17,829	21,846	51,795	67,638
Write-off of financing costs on extinguished debt				2,608
Provision for income taxes	49,062	63,468	119,047	169,867
EBITDA	378,748	453,473	1,042,140	1,297,751
Costs associated with transformation initiatives	55,374		55,374
Carried interest incentive compensation expense (reversal) to align with the timing of associated revenue	3,767	(3,360)	(11,517)	12,284
Impact of fair value adjustments to real estate assets acquired in the Telford Acquisition (purchase accounting) that were sold in period	2,289		9,289
Costs incurred related to legal entity restructuring	1,061		4,995
Integration and other costs related to acquisitions	525	4,517	1,544	13,554
Costs associated with workforce optimization efforts			37,594
Costs associated with our reorganization, including cost-savings initiatives				49,565
Adjusted EBITDA	$ 441,764	$ 454,630	$ 1,139,419	$ 1,373,154

Segments - Adjusted EBITDA Ca_2

Segments - Adjusted EBITDA Calculation by Segment (Parenthetical) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)
Segment Reporting Information [Line Items]
Costs primarily associated with workforce optimization efforts	$ 37,594
Cost of Revenue [Member]
Segment Reporting Information [Line Items]
Costs primarily associated with workforce optimization efforts	7,400
Operating, Administrative, and Other [Member]
Segment Reporting Information [Line Items]
Costs primarily associated with workforce optimization efforts	$ 30,200

Segments - Summary of Geographi

Segments - Summary of Geographic Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 5,645,142	$ 5,925,101	$ 16,915,694	$ 16,774,684
United States [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	3,162,235	3,442,570	9,632,592	9,851,477
United Kingdom [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	736,927	758,084	2,188,822	2,003,671
All other countries [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 1,745,980	$ 1,724,447	$ 5,094,280	$ 4,919,536

Transformation Initiatives - Ad

Transformation Initiatives - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Restructuring Cost And Reserve [Line Items]
Costs associated with transformation initiatives	$ 55,374	$ 55,374
Cost of Revenue [Member]
Restructuring Cost And Reserve [Line Items]
Costs associated with transformation initiatives	15,700	15,700
Operating, Administrative, and Other [Member]
Restructuring Cost And Reserve [Line Items]
Costs associated with transformation initiatives	39,700	39,700
Advisory Services [Member]
Restructuring Cost And Reserve [Line Items]
Costs associated with transformation initiatives	38,300	38,300
Global Workplace Solutions [Member]
Restructuring Cost And Reserve [Line Items]
Costs associated with transformation initiatives	$ 17,100	$ 17,100