Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Investment Management:
Revenues	$ 305,211	$ 201,143	$ 603,534	$ 402,953
Operating Expenses
Depreciation and amortization	113,632	64,337	226,011	130,294
General and administrative	19,729	16,442	41,014	35,025
Reimbursable tenant costs	13,917	5,733	27,088	11,952
Operating property expenses	10,874	3,581	21,468	9,251
Property expenses, excluding reimbursable tenant costs	9,915	5,327	19,827	9,556
Stock-based compensation expense	4,936	3,698	9,101	11,917
Reimbursable costs from affiliates	3,821	5,537	7,689	10,841
Subadvisor fees	1,650	1,855	3,852	3,887
Merger and other expenses	696	2,692	842	2,655
Impairment charges	0	0	0	4,790
Total operating expenses	179,170	109,202	356,892	230,168
Other Income and Expenses
Interest expense	(59,719)	(41,311)	(121,032)	(79,385)
Equity in earnings of equity method investments in the Managed Programs and real estate	3,951	12,558	9,442	27,883
Other gains and (losses)	(671)	10,586	284	7,823
(Loss) gain on sale of real estate, net	(362)	11,912	571	18,644
Total other income and expenses	(56,801)	(6,255)	(110,735)	(25,035)
Income before income taxes	69,240	85,686	135,907	147,750
Provision for income taxes	(3,119)	(6,262)	(990)	(260)
Net Income	66,121	79,424	134,917	147,490
Net income attributable to noncontrolling interests	(83)	(3,743)	(385)	(6,535)
Net Income Attributable to W. P. Carey	$ 66,038	$ 75,681	$ 134,532	$ 140,955
Basic Earnings Per Share (usd per share)	$ 0.39	$ 0.70	$ 0.79	$ 1.30
Diluted Earnings Per Share (usd per share)	$ 0.38	$ 0.70	$ 0.79	$ 1.30
Weighted-Average Shares Outstanding
Basic (in shares)	171,304,112	108,059,394	169,280,360	108,058,671
Diluted (in shares)	171,490,625	108,234,934	169,520,508	108,243,063
Real Estate
Real Estate:
Lease revenues	$ 269,802	$ 168,367	$ 532,741	$ 337,799
Gross contract revenue	15,436	4,865	31,432	12,083
Lease termination income and other	6,304	680	9,574	1,622
Investment Management:
Gross contract revenue	15,436	4,865	31,432	12,083
Revenues	291,542	173,912	573,747	351,504
Operating Expenses
Depreciation and amortization	112,666	63,374	224,079	128,294
General and administrative	15,001	10,599	30,189	22,664
Reimbursable tenant costs	13,917	5,733	27,088	11,952
Operating property expenses	10,874	3,581	21,468	9,251
Property expenses, excluding reimbursable tenant costs	9,915	5,327	19,827	9,556
Stock-based compensation expense	3,482	1,990	6,282	6,296
Merger and other expenses	696	2,692	842	2,655
Impairment charges	0	0	0	4,790
Total operating expenses	166,551	93,296	329,775	195,458
Other Income and Expenses
Interest expense	(59,719)	(41,311)	(121,032)	(79,385)
Equity in earnings of equity method investments in the Managed Programs and real estate	230	3,529	152	6,887
Other gains and (losses)	(1,362)	9,630	(392)	6,743
(Loss) gain on sale of real estate, net	(362)	11,912	571	18,644
Total other income and expenses	(61,213)	(16,240)	(120,701)	(47,111)
Income before income taxes	63,778	64,376	123,271	108,935
Provision for income taxes	(3,019)	(1,317)	(9,178)	2,216
Net Income	60,759	63,059	114,093	111,151
Net income attributable to noncontrolling interests	9	(3,743)	83	(6,535)
Net Income Attributable to W. P. Carey	60,768	59,316	114,176	104,616
Investment Management
Real Estate:
Gross contract revenue	13,669	27,231	29,787	51,449
Investment Management:
Gross contract revenue	13,669	27,231	29,787	51,449
Operating Expenses
Depreciation and amortization	966	963	1,932	2,000
General and administrative	4,728	5,843	10,825	12,361
Stock-based compensation expense	1,454	1,708	2,819	5,621
Reimbursable costs from affiliates	3,821	5,537	7,689	10,841
Subadvisor fees	1,650	1,855	3,852	3,887
Total operating expenses	12,619	15,906	27,117	34,710
Other Income and Expenses
Equity in earnings of equity method investments in the Managed Programs and real estate	3,721	9,029	9,290	20,996
Other gains and (losses)	691	956	676	1,080
Total other income and expenses	4,412	9,985	9,966	22,076
Income before income taxes	5,462	21,310	12,636	38,815
Provision for income taxes	(100)	(4,945)	8,188	(2,476)
Net Income	5,362	16,365	20,824	36,339
Net income attributable to noncontrolling interests	(92)	0	(468)	0
Net Income Attributable to W. P. Carey	5,270	16,365	20,356	36,339
Investment Management | Asset management revenue
Real Estate:
Gross contract revenue	9,790	17,268	19,522	34,253
Investment Management:
Gross contract revenue	9,790	17,268	19,522	34,253
Investment Management | Reimbursable costs from affiliates
Real Estate:
Gross contract revenue	3,821	5,537	7,689	10,841
Investment Management:
Gross contract revenue	3,821	5,537	7,689	10,841
Investment Management | Structuring and other advisory revenue
Real Estate:
Gross contract revenue	58	4,426	2,576	6,355
Investment Management:
Gross contract revenue	$ 58	$ 4,426	$ 2,576	$ 6,355