Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue	$ 5,135,510	$ 4,673,952
Costs and expenses:
Cost of services	4,022,034	3,619,961
Operating, administrative and other	792,876	732,235
Depreciation and amortization	105,823	108,165
Intangible asset impairment	89,037
Total costs and expenses	5,009,770	4,460,361
Gain on disposition of real estate	19,247	18
Operating income	144,987	213,609
Equity income from unconsolidated subsidiaries	72,664	40,179
Other income (loss)	20,853	(4,280)
Interest income	1,534	3,621
Interest expense	22,726	28,858
Write-off of financing costs on extinguished debt	2,608	27,982
Income before provision for income taxes	214,704	196,289
Provision for income taxes	43,878	46,164
Net income	170,826	150,125
Less: Net income (loss) attributable to non-controlling interests	6,417	(163)
Net income attributable to CBRE Group, Inc.	$ 164,409	$ 150,288
Basic income per share:
Net income per share attributable to CBRE Group, Inc.	$ 0.49	$ 0.44
Weighted average shares outstanding for basic income per share	336,020,431	338,890,098
Diluted income per share:
Net income per share attributable to CBRE Group, Inc.	$ 0.48	$ 0.44
Weighted average shares outstanding for diluted income per share	340,158,399	342,589,810

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Name:	us-gaap_CostOfGoodsAndServicesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Total costs of sales and operating expenses for the period.