Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

Summary information by reportable business segment is as follows:

	For the Year Ended December 31, 2019
	Triple-Net Leased Properties		Senior Living Operations		Office Operations		All Other		Total
	(In thousands)
Revenues:
Rental income	$	780,898	$	—	$	828,978	$	—	$	1,609,876
Resident fees and services	—		2,151,533		—		—		2,151,533
Office building and other services revenue	—		—		7,747		3,409		11,156
Income from loans and investments	—		—		—		89,201		89,201
Interest and other income	—		—		—		10,984		10,984
Total revenues	$	780,898	$	2,151,533	$	836,725	$	103,594	$	3,872,750
Total revenues	$	780,898	$	2,151,533	$	836,725	$	103,594	$	3,872,750
Less:
Interest and other income	—		—		—		10,984		10,984
Property-level operating expenses	26,561		1,521,398		260,249		—		1,808,208
Office building services costs	—		—		2,319		—		2,319
Segment NOI	$	754,337	$	630,135	$	574,157	$	92,610	2,051,239
Interest and other income									10,984
Interest expense									(451,662		)
Depreciation and amortization									(1,045,620		)
General, administrative and professional fees									(165,996		)
Loss on extinguishment of debt, net									(41,900		)
Merger-related expenses and deal costs									(15,235		)
Other									17,609
Loss from unconsolidated entities									(2,454		)
Gain on real estate dispositions									26,022
Income tax benefit									56,310
Income from continuing operations									439,297
Discontinued operations									—
Net income									439,297
Net income attributable to noncontrolling interests									6,281
Net income attributable to common stockholders									$	433,016

	For the Year Ended December 31, 2018
	Triple-Net Leased Properties		Senior Living Operations		Office Operations		All Other		Total
	(In thousands)
Revenues:
Rental income	$	737,796	$	—	$	776,011	$	—	$	1,513,807
Resident fees and services	—		2,069,477		—		—		2,069,477
Office building and other services revenue	2,522		—		7,592		3,302		13,416
Income from loans and investments	—		—		—		124,218		124,218
Interest and other income	—		—		—		24,892		24,892
Total revenues	$	740,318	$	2,069,477	$	783,603	$	152,412	$	3,745,810
Total revenues	$	740,318	$	2,069,477	$	783,603	$	152,412	$	3,745,810
Less:
Interest and other income	—		—		—		24,892		24,892
Property-level operating expenses	—		1,446,201		243,679		—		1,689,880
Office building services costs	—		—		1,418		—		1,418
Segment NOI	$	740,318	$	623,276	$	538,506	$	127,520	2,029,620
Interest and other income									24,892
Interest expense									(442,497		)
Depreciation and amortization									(919,639		)
General, administrative and professional fees									(151,982		)
Loss on extinguishment of debt, net									(58,254		)
Merger-related expenses and deal costs									(30,547		)
Other									(66,768		)
Loss from unconsolidated entities									(55,034		)
Gain on real estate dispositions									46,247
Income tax benefit									39,953
Income from continuing operations									415,991
Discontinued operations									(10		)
Net income									415,981
Net income attributable to noncontrolling interests									6,514
Net income attributable to common stockholders									$	409,467

	For the Year Ended December 31, 2017
	Triple-Net Leased Properties		Senior Living Operations		Office Operations		All Other		Total
	(In thousands)
Revenues:
Rental income	$	840,131	$	—	$	753,467	$	—	$	1,593,598
Resident fees and services	—		1,843,232		—		—		1,843,232
Office building and other services revenue	4,580		—		7,497		1,600		13,677
Income from loans and investments	—		—		—		117,608		117,608
Interest and other income	—		—		—		6,034		6,034
Total revenues	$	844,711	$	1,843,232	$	760,964	$	125,242	$	3,574,149
Total revenues	$	844,711	$	1,843,232	$	760,964	$	125,242	$	3,574,149
Less:
Interest and other income	—		—		—		6,034		6,034
Property-level operating expenses	—		1,250,065		233,007		—		1,483,072
Office building services costs	—		—		3,391		—		3,391
Segment NOI	$	844,711	$	593,167	$	524,566	$	119,208	2,081,652
Interest and other income									6,034
Interest expense									(448,196		)
Depreciation and amortization									(887,948		)
General, administrative and professional fees									(135,490		)
Loss on extinguishment of debt, net									(754		)
Merger-related expenses and deal costs									(10,535		)
Other									(20,052		)
Loss from unconsolidated entities									(561		)
Gain on real estate dispositions									717,273
Income tax benefit									59,799
Income from continuing operations									1,361,222
Discontinued operations									(110		)
Net income									1,361,112
Net income attributable to noncontrolling interests									4,642
Net income attributable to common stockholders									$	1,356,470

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

Assets by reportable business segment are as follows:

	As of December 31,
	2019				2018
	(Dollars in thousands)
Assets:
Triple-net leased properties	$	6,381,657	25.8	%	$	6,795,142	30.1	%
Senior living operations	10,142,023		41.1		8,156,187		36.1
Office operations	7,173,401		29.1		6,772,957		30.0
All other assets	995,127		4.0		860,269		3.8
Total assets	$	24,692,208	100.0	%	$	22,584,555	100.0	%

Segment Reporting Information Expenditures for Additions to Long-Lived Assets [Table Text Block]

Capital expenditures, including investments in real estate property and development project expenditures, by reportable business segment are as follows:

	For the Years Ended December 31,
	2019		2018		2017
	(In thousands)
Capital expenditures:
Triple-net leased properties	$	55,429	$	58,744	$	254,542
Senior living operations	944,214		337,750		261,900
Office operations	519,129		332,147		579,885
Total capital expenditures	$	1,518,772	$	728,641	$	1,096,327

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

Geographic information regarding our operations is as follows:

	For the Years Ended December 31,
	2019		2018		2017
	(In thousands)
Revenues:
United States	$	3,578,341	$	3,524,875	$	3,361,682
Canada	266,946		192,350		186,049
United Kingdom	27,463		28,585		26,418
Total revenues	$	3,872,750	$	3,745,810	$	3,574,149

Long-lived Assets by Geographic Areas [Table Text Block]

	As of December 31,
	2019		2018
	(In thousands)
Net real estate property:
United States	$	18,631,352	$	18,861,163
Canada	2,830,850		963,588
United Kingdom	266,885		268,906
Total net real estate property	$	21,729,087	$	20,093,657