Discontinued Operations - Discontinued Operations from Dispositions of Real Estate (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2013 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Revenue	$ 9,362
Costs and expenses:
Operating, administrative and other	5,416
Depreciation and amortization	880
Total costs and expenses	6,296
Gain on disposition of real estate	28,602
Operating income	31,668
Interest expense	3,297
Income from discontinued operations, before provision for income taxes	28,371
Provision for income taxes	1,374
Income from discontinued operations, net of income taxes	26,997
Less: Income from discontinued operations attributable to non-controlling interests	24,688
Income from discontinued operations attributable to CBRE Group, Inc.	$ 2,309