Debt Debt - Encumbered Properties (Details) $ in Thousands |
Dec. 31, 2019
USD ($)
property
|
Dec. 31, 2018
USD ($)
property
|
|---|---|---|
| Debt Instrument [Line Items] | ||
| Net Book Value | $ 7,986,276 | $ 8,020,597 |
| Encumbered Properties | ||
| Debt Instrument [Line Items] | ||
| Number of Properties | property | 18,001 | 18,009 |
| Net Book Value | $ 2,468,887 | $ 2,548,384 |
| Encumbered Properties | AH4R 2014-SFR2 securitization | ||
| Debt Instrument [Line Items] | ||
| Number of Properties | property | 4,543 | 4,546 |
| Net Book Value | $ 592,203 | $ 611,279 |
| Encumbered Properties | AH4R 2014-SFR3 securitization | ||
| Debt Instrument [Line Items] | ||
| Number of Properties | property | 4,587 | 4,588 |
| Net Book Value | $ 642,189 | $ 662,068 |
| Encumbered Properties | AH4R 2015-SFR1 securitization | ||
| Debt Instrument [Line Items] | ||
| Number of Properties | property | 4,696 | 4,697 |
| Net Book Value | $ 641,595 | $ 662,202 |
| Encumbered Properties | AH4R 2015-SFR2 securitization | ||
| Debt Instrument [Line Items] | ||
| Number of Properties | property | 4,175 | 4,178 |
| Net Book Value | $ 592,900 | $ 612,835 |