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Debt - Schedule of Debt (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 05, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Apr. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total debt |  | $ 4,462,933,000 |  | $ 4,462,933,000 |  |  | $ 3,924,181,000
Unamortized discounts on unsecured senior notes |  | (37,658,000) |  | (37,658,000) |  |  | (15,561,000)
Deferred financing costs, net |  | (33,063,000) |  | (33,063,000) |  |  | (28,142,000)
Total debt per balance sheet |  | 4,392,212,000 |  | 4,392,212,000 |  |  | 3,880,478,000
Amortization of financing costs |  |  |  | 5,502,000 | $ 3,828,000 |  |
Asset-backed securitizations, unsecured senior notes and term loan facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amortization of financing costs |  | 1,700,000 | $ 1,500,000 | 3,300,000 | $ 3,000,000 |  |
Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total debt |  | $ 1,912,933,000 |  | $ 1,912,933,000 |  |  | 1,924,181,000
Secured Debt | AH4R 2014-SFR2 securitization |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.42% |  | 4.42% |  |  |
Total debt |  | $ 470,705,000 |  | $ 470,705,000 |  |  | 473,594,000
Secured Debt | AH4R 2014-SFR3 securitization |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.40% |  | 4.40% |  |  |
Total debt |  | $ 486,042,000 |  | $ 486,042,000 |  |  | 488,790,000
Secured Debt | AH4R 2015-SFR1 securitization |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.14% |  | 4.14% |  |  |
Total debt |  | $ 511,859,000 |  | $ 511,859,000 |  |  | 514,868,000
Secured Debt | AH4R 2015-SFR2 securitization |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.36% |  | 4.36% |  |  |
Total debt |  | $ 444,327,000 |  | $ 444,327,000 |  |  | 446,929,000
Senior Notes | 2028 unsecured senior notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.25% |  | 4.25% |  |  |
Effective interest rate |  | 4.08% |  | 4.08% |  |  |
Total debt |  | $ 500,000,000 |  | $ 500,000,000 |  |  | 500,000,000
Senior Notes | 2029 unsecured senior notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.90% |  | 4.90% |  |  |
Total debt |  | $ 400,000,000 |  | $ 400,000,000 |  |  | 400,000,000
Senior Notes | 2031 unsecured senior notes, net |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 2.38% |  | 2.38% |  |  |
Effective interest rate |  | 2.46% |  | 2.46% |  |  |
Total debt |  | $ 450,000,000 |  | $ 450,000,000 |  |  | 450,000,000
Senior Notes | 2032 unsecured senior notes, net |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 3.63% |  | 3.63% |  | 3.625% |
Total debt |  | $ 600,000,000 |  | $ 600,000,000 |  | $ 600,000,000 | 0
Senior Notes | 2051 unsecured senior notes, net |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 3.38% |  | 3.38% |  |  |
Total debt |  | $ 300,000,000 |  | $ 300,000,000 |  |  | 300,000,000
Senior Notes | 2052 unsecured senior notes, net |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 4.30% |  | 4.30% |  | 4.30% |
Total debt |  | $ 300,000,000 |  | $ 300,000,000 |  | $ 300,000,000 | 0
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate |  | 2.89% |  | 2.89% |  |  |
Total debt |  | $ 0 |  | $ 0 |  |  | 350,000,000
Maximum borrowing capacity |  | 1,250,000,000 |  | 1,250,000,000 |  |  |
Outstanding letters of credit |  | $ 2,500,000 |  | $ 2,500,000 |  |  | $ 1,600,000
Line of Credit | Revolving Credit Facility | LIBOR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.10% |  |  |
Line of Credit | Revolving Credit Facility | LIBOR | Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate | 0.90% |  |  |  |  |  |

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