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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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Debt - Schedule of Debt (Details) - USD ($)	3 Months Ended
Debt - Schedule of Debt (Details) - USD ($)	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Debt, gross	$ 2,970,558,000		$ 2,870,993,000
Unamortized discounts on unsecured senior notes	(4,022,000)		(4,143,000)
Deferred financing costs, net	(31,876,000)		(33,353,000)
Total debt per balance sheet	2,934,660,000		2,833,497,000
Amortization of financing costs	1,849,000	$ 1,810,000
Asset-backed Securitizations, Unsecured Senior Notes and Term Loan Facility
Debt Instrument [Line Items]
Amortization of financing costs	1,500,000	$ 1,500,000
Secured Debt
Debt Instrument [Line Items]
Debt, gross	$ 1,965,558,000		1,970,993,000
Secured Debt \| 2014-SFR 2
Debt Instrument [Line Items]
Interest Rate	4.42%
Debt, gross	$ 484,546,000		485,828,000
Secured Debt \| 2014-SFR 3
Debt Instrument [Line Items]
Interest Rate	4.40%
Debt, gross	$ 499,816,000		501,393,000
Secured Debt \| 2015-SFR 1
Debt Instrument [Line Items]
Interest Rate	4.14%
Debt, gross	$ 525,178,000		526,560,000
Secured Debt \| 2015-SFR 2
Debt Instrument [Line Items]
Interest Rate	4.36%
Debt, gross	$ 456,018,000		457,212,000
Senior Notes \| 4.25% Senior Notes Due 2028
Debt Instrument [Line Items]
Interest Rate	4.25%
Effective interest rate	4.08%
Debt, gross	$ 500,000,000		500,000,000
Senior Notes \| 4.90% Senior Notes Due 2029
Debt Instrument [Line Items]
Interest Rate	4.90%
Debt, gross	$ 400,000,000		400,000,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Interest Rate	2.19%
Debt, gross	$ 105,000,000		0
Maximum borrowing capacity	800,000,000.0
Outstanding letters of credit	$ 3,700,000		$ 6,200,000
Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.20%