Derivatives Derivatives - Schedule of Interest Rate Swap Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Interest Rate Contract, Maturing November 1, 2022 [Member]
Derivative [Line Items]
Derivative, notional amount	$ 350
Weighted average interest rate, LIBOR	1.04%
Interest Rate Contract, Maturing June 1, 2025 [Member]
Derivative [Line Items]
Derivative, notional amount	$ 100
Weighted average interest rate, LIBOR	0.96%
Interest Rate Contract, Maturing September 9, 2026 [Member]
Derivative [Line Items]
Derivative, notional amount	$ 320	$ 320
Weighted average interest rate, LIBOR	1.51%	1.51%