Property, Plant and Equipment and Leasehold Intangibles, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	$ 10,686,382	$ 10,295,498
Accumulated depreciation and amortization	(2,345,096)	(1,905,993)
Property, plant and equipment and leasehold intangibles, net	8,341,286	8,389,505
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	514,417	475,485
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	5,277,317	5,017,991
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	80,636	56,515
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	818,343	735,837
Resident and Leasehold Operating Intangibles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	852,144	852,746
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	113,870	99,408
Assets Under Capital and Financing Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment and leasehold intangibles gross	$ 3,029,655	$ 3,057,516