Financial Instruments and Derivatives - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) Contract $ / shares	Dec. 31, 2018 USD ($)
Derivative [Line Items]
Preferred Stock, Redemption Price Per Share | $ / shares	$ 50
Preferred Stock, Redemption Date	Oct. 01, 2026
Net Liability Position [Member]
Derivative [Line Items]
Credit Risk Related Contingent Features Termination Value	$ 0
Fair Value, Measurements, Recurring [Member]
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset	36,500,000	$ 18,600,000
Fair Value, Measurements, Recurring [Member] | Other Assets [Member]
Derivative [Line Items]
Interest Rate Derivative Assets, at Fair Value	100,000	3,700,000
Fair Value, Measurements, Recurring [Member] | Accrued Expenses and Other Liabilities [Member]
Derivative [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	5,300,000
Designated as Hedging Instrument | Interest Expense
Derivative [Line Items]
Change in fair value of interest rate derivatives included in AOCI and expected to be reclassified in the next 12 months	$ 1,100,000
Designated as Hedging Instrument | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | Contract	4
Derivative, Notional Amount	$ 300,000,000.0
Conventional Variable Rate Debt [Member] | Minimum [Member]
Derivative [Line Items]
Debt Renewal Period	30 days
Conventional Variable Rate Debt [Member] | Maximum [Member]
Derivative [Line Items]
Debt Renewal Period	90 days
Fixed Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements	$ 4,100,000,000	3,100,000,000
Notes Payable, Fair Value Disclosure	4,500,000,000	3,100,000,000
Floating Rate Debt [Member]
Derivative [Line Items]
Notes Payable Excluding Interest Rate Swaps and Cap Agreements	400,000,000	1,100,000,000
Notes Payable, Fair Value Disclosure	$ 400,000,000	$ 1,100,000,000