Goodwill and Other Intangibles (Narratives) (Details) (USD $)	3 Months Ended		6 Months Ended					6 Months Ended			0 Months Ended			3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Real Estate Investments	Dec. 31, 2013 Real Estate Investments	Jun. 30, 2014 Maximum	Jun. 30, 2014 Maximum Below-market ground lease	Jun. 30, 2014 Minimum	Jun. 30, 2014 CPA: 16 - Global	Mar. 31, 2014 CPA: 16 - Global	Jan. 31, 2014 CPA: 16 - Global	Jun. 30, 2014 Measurement period adjustment CPA: 16 - Global
Finite-Lived Intangible Assets
Goodwill	$ 698,891,000		$ 698,891,000		$ 350,208,000	$ 635,284,000	$ 286,601,000				$ 348,876,000	$ 348,972,000	$ 348,876,000	$ (96,000)
Total Consideration											2,059,840,000	2,057,914,000	2,059,840,000	1,926,000
Finite-Lived Intangible Assets, Net
Finite lived intangible assets useful life								40 years	134 years	1 year
Amortization of intangible assets	$ 49,600,000	$ 21,300,000	$ 89,400,000	$ 42,300,000