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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount, after accumulated amortization, of debt discount.

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Debt - Schedule of Debt (Details) - USD ($)	3 Months Ended		9 Months Ended
Debt - Schedule of Debt (Details) - USD ($)	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Debt, gross	$ 2,853,883,000		$ 2,853,883,000		$ 2,870,993,000
Unamortized discounts on unsecured senior notes	(3,780,000)		(3,780,000)		(4,143,000)
Deferred financing costs, net	(28,911,000)		(28,911,000)		(33,353,000)
Total debt per balance sheet	2,821,192,000		2,821,192,000		2,833,497,000
Amortization of financing costs			5,564,000	$ 5,588,000
Asset-backed Securitizations, Unsecured Senior Notes and Term Loan Facility
Debt Instrument [Line Items]
Amortization of financing costs	1,500,000	$ 1,500,000	4,500,000	$ 4,500,000
Secured Debt
Debt Instrument [Line Items]
Debt, gross	$ 1,953,883,000		$ 1,953,883,000		1,970,993,000
Secured Debt \| 2014-SFR 2
Debt Instrument [Line Items]
Interest Rate	4.42%		4.42%
Debt, gross	$ 481,520,000		$ 481,520,000		485,828,000
Secured Debt \| 2014-SFR 3
Debt Instrument [Line Items]
Interest Rate	4.40%		4.40%
Debt, gross	$ 496,577,000		$ 496,577,000		501,393,000
Secured Debt \| 2015-SFR 1
Debt Instrument [Line Items]
Interest Rate	4.14%		4.14%
Debt, gross	$ 522,338,000		$ 522,338,000		526,560,000
Secured Debt \| 2015-SFR 2
Debt Instrument [Line Items]
Interest Rate	4.36%		4.36%
Debt, gross	$ 453,448,000		$ 453,448,000		457,212,000
Senior Notes \| 2028 unsecured senior notes, net
Debt Instrument [Line Items]
Interest Rate	4.25%		4.25%
Effective interest rate	4.08%		4.08%
Debt, gross	$ 500,000,000		$ 500,000,000		500,000,000
Senior Notes \| 2029 unsecured senior notes, net
Debt Instrument [Line Items]
Interest Rate	4.90%		4.90%
Debt, gross	$ 400,000,000		$ 400,000,000		400,000,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Interest Rate	1.35%		1.35%
Debt, gross	$ 0		$ 0		0
Maximum borrowing capacity	800,000,000.0		800,000,000.0
Outstanding letters of credit	$ 1,500,000		$ 1,500,000		$ 6,200,000
Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.20%