Derivatives - Interest Rate Swaps (Details) - USD ($)		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020		Apr. 30, 2019
Derivatives
Derivative, notional amount								$ 850,000,000
Derivative, fixed interest rate								2.28%
Interest Rate Swaps Terminations		$ 850,000,000.0
Cash Payments Associated with Interest Rate Swaps Terminations		12,700,000
Change in fair value of derivatives		40,200,000		$ (12,400,000)		$ (10,500,000)
Tax benefit (expense)		(500,000)		(4,300,000)		1,300,000
Unrealized gain (loss) on designated cash flow hedge	[2]	1,400,000	[1]	13,900,000	[3]	(4,300,000)	[4]
Cash flow hedge gain (loss) amortized into interest rate expense		1,900,000		18,300,000		14,500,000
December 2021
Derivatives
Interest Rate Swaps Terminations		150,000,000.0
Cash Payments Associated with Interest Rate Swaps Terminations		0
September 2021
Derivatives
Interest Rate Swaps Terminations		100,000,000.0
Cash Payments Associated with Interest Rate Swaps Terminations		500,000
May 2021
Derivatives
Interest Rate Swaps Terminations		100,000,000.0
Cash Payments Associated with Interest Rate Swaps Terminations		1,300,000
December 2020
Derivatives
Interest Rate Swaps Terminations		500,000,000.0
Cash Payments Associated with Interest Rate Swaps Terminations		10,900,000
Interest rate swaps
Derivatives
Change in fair value of derivatives		$ 1,900,000		$ 18,200,000		$ (5,600,000)

[1] Includes a tax expense of $0.5 million.

[2] Includes tax expense of $0.5 million and $4.3 million for the years ended December 31, 2022 and 2021, respectively, and a tax benefit of $1.3 million for the year ended December 31, 2020.

[3] Includes a tax expense of $4.3 million.

[4] Includes a tax benefit of $1.3 million.