v3.5.0.2

ACQUISITIONS OF REAL ESTATE PROPERTY - Narrative (Details) $ / shares in Units, $ in Thousands, shares in Millions |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jul. 05, 2016 USD ($) property | Aug. 04, 2015 USD ($) | Aug. 31, 2015 property | Jan. 31, 2015 USD ($) property $ / shares shares | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) property | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) property
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Investment in unconsolidated operating entity |  |  |  |  |  |  | $ 0 | $ 26,282 |
Total net real estate property |  |  |  |  | $ 20,601,402 |  | 20,601,402 |  | $ 19,625,220
Total revenues |  |  |  |  | 867,116 | $ 827,606 | 2,567,809 | $ 2,445,124 |
Goodwill |  |  |  |  | 1,043,075 |  | 1,043,075 |  | $ 1,047,497
Limited Partnership Units |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Equity interest issued, number of shares | shares |  |  |  | 1.1 |  |  |  |  |
Wexford Acquisition |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total cash used | $ 1,500,000 |  |  |  |  |  |  |  |
Wexford Acquisition | Operating Property |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property | 23 |  |  |  |  |  |  |  |
Wexford Acquisition | Development Assets |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property | 2 |  |  |  |  |  |  |  |
Wexford Acquisition | Future Development Sites |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property | 9 |  |  |  |  |  |  |  |
Other 2016 Acquisitions |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Investment in unconsolidated operating entity |  |  |  |  |  |  | 42,000 |  |
Other 2016 Acquisitions | Triple-Net Leased Properties |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  |  |  |  |  |  |  | 1
Other 2016 Acquisitions | Unconsolidated Properties | Office Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  |  |  |  |  |  |  | 2
2016 Acquisitions |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total cash used |  |  |  |  |  |  | 1,428,545 |  |
Acquisition costs |  |  |  |  | 14,000 |  | 18,600 |  |
Assumed mortgage debt |  |  |  |  | 47,641 |  | 47,641 |  |
2016 Acquisitions | Triple-Net Leased Properties |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total cash used |  |  |  |  |  |  | 13,620 |  |
Assumed mortgage debt |  |  |  |  | 0 |  | 0 |  |
2016 Acquisitions | Office Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total cash used |  |  |  |  |  |  | 1,414,925 |  |
Assumed mortgage debt |  |  |  |  | 47,641 |  | $ 47,641 |  |
2016 Acquisitions | Development Assets |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties completed | property |  |  |  |  |  |  | 3 |  |
Total net real estate property |  |  |  |  | 31,600 |  | $ 31,600 |  |
2016 Acquisitions | Expansion of Senior Housing |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties completed | property |  |  |  |  |  |  | 2 |  |
2015 Acquisitions |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total cash used |  |  |  |  |  |  |  |  | $ 2,685,982
Number of real estate properties acquired | property |  |  |  | 152 |  |  |  |  |
Assumed mortgage debt |  |  |  |  |  |  |  |  | 177,857
Equity issued |  |  |  |  |  |  |  |  | 2,216,355
Goodwill |  |  |  |  |  |  |  |  | 746,900
2015 Acquisitions | Triple-Net Leased Properties |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Assumed mortgage debt |  |  |  |  |  |  |  |  | 0
Goodwill |  |  |  |  |  |  |  |  | 133,600
2015 Acquisitions | Senior Living Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Assumed mortgage debt |  |  |  |  |  |  |  |  | 77,940
Goodwill |  |  |  |  |  |  |  |  | 219,100
2015 Acquisitions | Office Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Assumed mortgage debt |  |  |  |  |  |  |  |  | 99,917
Goodwill |  |  |  |  |  |  |  |  | 394,200
American Realty Capital Healthcare Trust |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total cash used |  |  |  | $ 11,000 |  |  |  |  |
Number of real estate properties acquired | property |  |  |  | 20 |  |  |  |  |
Consideration transferred, stock conversion ratio, per acquiree share |  |  |  | 0.1688 |  |  |  |  |
Consideration transferred, price per acquiree share | $ / shares |  |  |  | $ 11.33 |  |  |  |  |
Assumed mortgage debt |  |  |  | $ 167,000 |  |  |  |  |
Repayments of debt |  |  |  | $ 730,000 |  |  |  |  |
American Realty Capital Healthcare Trust | Skilled Nursing Facilities |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  | 10 |  |  |  |  |  |
American Realty Capital Healthcare Trust | Common Stock Par Value |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Equity interest issued, number of shares | shares |  |  |  | 28.4 |  |  |  |  |
Ardent |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Investment in unconsolidated operating entity |  | $ 26,300 |  |  |  |  |  |  |
Business combination assets acquired, property plant and equipment |  | $ 1,300,000 |  |  |  |  |  |  |
Ownership interests accounted for under the equity method |  | 9.90% |  |  |  |  |  |  |
Other 2015 Acquisitions |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |  | $ 612,000
Other 2015 Acquisitions | Triple-Net Leased Properties |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  |  |  |  |  |  |  | 11
Other 2015 Acquisitions | Office Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  |  |  |  |  |  |  | 11
Other 2015 Acquisitions | Skilled Nursing Facilities |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  |  |  |  |  |  |  | 12
Other 2015 Acquisitions | Unconsolidated Properties | Office Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties acquired | property |  |  |  |  |  |  |  |  | 8
2015 Development Projects | Triple-Net Leased Properties |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of real estate properties completed | property |  |  |  |  |  |  |  |  | 1
Total net real estate property |  |  |  |  |  |  |  |  | $ 9,300
Aggregate Revenue | 2016 Acquisitions |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  | 14,000 |  | $ 14,700 |  |
Net Operating Income | 2016 Acquisitions |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  | $ 9,600 |  | $ 10,200 |  |

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