Schedule III - Real Estate and Accumulated Depreciation (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Real estate
Rollforward of Carrying Amounts of Real Estate Investments
Beginning balance	$ 2,105,772	$ 1,500,151	$ 930,404
Additions (a)	235,093	513,407	531,795
Disposition	0	(56,200)	(10,142)
Foreign currency translation adjustment	31,932	15,468	(25,664)
Reclassification from real estate under construction	29,518	140,324	73,758
Reclassification to direct financing lease	0	(7,378)	0
Ending balance	2,402,315	2,105,772	1,500,151
Rollforward of Accumulated Depreciation of Real Estate Investments
Beginning balance	77,245	40,522	16,274
Depreciation expense	49,785	37,265	25,046
Dispositions	0	(447)	(7)
Foreign currency translation adjustment	2,021	625	(791)
Reclassification to direct financing lease	0	(720)	0
Ending balance	129,051	77,245	40,522
Operating real estate
Rollforward of Carrying Amounts of Real Estate Investments
Beginning balance	254,805	178,141	12,177
Additions (a)	29,066	77,203	165,964
Disposition	(13,058)	0	0
Reclassification from real estate under construction	12,557	0	0
Write-off of fully depreciated asset	0	(539)	0
Ending balance	283,370	254,805	178,141
Rollforward of Accumulated Depreciation of Real Estate Investments
Beginning balance	7,757	2,745	300
Depreciation expense	8,470	5,551	2,445
Dispositions	(873)	0	0
Write-off of fully depreciated asset	0	(539)	0
Ending balance	$ 15,354	$ 7,757	$ 2,745