v2.4.0.6
Segment Information (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Revenues:                      
Rental income                 $ 1,194,060 $ 803,455 $ 523,339
Resident fees and services                 1,229,479 868,095 446,301
Medical office building and other services revenue                 20,741 36,471 14,098
Income from loans and investments                 39,913 34,415 16,412
Interest and other income                 1,106 1,217 484
Total revenues 660,711 [1] 641,520 [1] 614,502 [1] 568,566 [1] 563,145 [2] 554,691 [2] 359,421 [2] 266,396 [2] 2,485,299 1,743,653 1,000,634
Less:                      
Interest and other income                 1,106 1,217 484
Property-level operating expenses                 969,342 647,193 315,953
Medical office building services costs                 9,883 27,082 9,518
Segment NOI                 1,504,968 1,068,161 674,679
Income from unconsolidated entities                 18,154 (52) (664)
Segment profit                 1,523,122 1,068,109 674,015
Interest and other income                 1,106 1,217 484
Interest expense                 (293,401) (229,346) (172,474)
Depreciation and amortization                 (725,981) (447,664) (200,682)
General, administrative and professional fees                 (98,801) (74,537) (49,830)
Loss on extinguishment of debt                 (37,640) (27,604) (9,791)
Litigation proceeds, net                 0 202,259 0
Merger-related expenses and deal costs                 (63,183) (153,923) (19,243)
Other                 (6,956) (7,270) (272)
Income tax benefit (expense)                 6,282 30,660 (5,201)
Discontinued operations (11,725) [1] (4,093) [1] 30,529 [1] 42,516 [1] (605) [2] (306) [2] 1,226 [2] 1,045 [2] 57,227 1,360 32,723
Net income                 361,775 363,261 249,729
Triple-Net Leased Properties
                      
Revenues:                      
Rental income                 831,221 637,294 453,592
Resident fees and services                 0 0 0
Medical office building and other services revenue                 4,438 2,217 0
Income from loans and investments                 0 0 0
Interest and other income                 0 0 0
Total revenues                 835,659 639,511 453,592
Less:                      
Interest and other income                 0 0 0
Property-level operating expenses                 0 0 0
Medical office building services costs                 0 0 0
Segment NOI                 835,659 639,511 453,592
Income from unconsolidated entities                 1,313 295 0
Segment profit                 836,972 639,806 453,592
Interest and other income                 0 0 0
Senior Living Operations
                      
Revenues:                      
Rental income                 0 0 0
Resident fees and services                 1,229,479 868,095 446,301
Medical office building and other services revenue                 0 0 0
Income from loans and investments                 0 0 0
Interest and other income                 0 0 0
Total revenues                 1,229,479 868,095 446,301
Less:                      
Interest and other income                 0 0 0
Property-level operating expenses                 843,190 590,151 291,831
Medical office building services costs                 0 0 0
Segment NOI                 386,289 277,944 154,470
Income from unconsolidated entities                 (48) 0 0
Segment profit                 386,241 277,944 154,470
Interest and other income                 0 0 0
MOB Operations
                      
Revenues:                      
Rental income                 362,839 166,161 69,747
Resident fees and services                 0 0 0
Medical office building and other services revenue                 16,303 34,254 14,098
Income from loans and investments                 0 0 0
Interest and other income                 0 0 0
Total revenues                 379,142 200,415 83,845
Less:                      
Interest and other income                 0 0 0
Property-level operating expenses                 126,152 57,042 24,122
Medical office building services costs                 9,883 27,082 9,518
Segment NOI                 243,107 116,291 50,205
Income from unconsolidated entities                 16,889 (347) (664)
Segment profit                 259,996 115,944 49,541
Interest and other income                 0 0 0
All Other
                      
Revenues:                      
Rental income                 0 0 0
Resident fees and services                 0 0 0
Medical office building and other services revenue                 0 0 0
Income from loans and investments                 39,913 34,415 16,412
Interest and other income                 1,106 1,217 484
Total revenues                 41,019 35,632 16,896
Less:                      
Interest and other income                 1,106 1,217 484
Property-level operating expenses                 0 0 0
Medical office building services costs                 0 0 0
Segment NOI                 39,913 34,415 16,412
Income from unconsolidated entities                 0 0 0
Segment profit                 39,913 34,415 16,412
Interest and other income                 $ 1,106 $ 1,217 $ 484
[1] The amounts presented for the three months ended March 31, 2012, June 30, 2012 and September 30, 2012 differ from the amounts previously reported in our Quarterly Reports on Form 10-Q as a result of discontinued operations consisting of properties sold in 2012 or classified as held for sale as of December 31, 2012.
[2] The amounts presented for the three months ended March 31, 2011, June 30, 2011, September 30, 2011 and December 31, 2011 differ from the amounts previously reported in our Annual Report on Form 10-K for the year ended December 31, 2011 as a result of discontinued operations consisting of properties sold in 2012 or classified as held for sale as of December 31, 2012.