Derivatives - Interest Rate Swaps (Details) - USD ($)		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019		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		(12,400,000)		$ (10,500,000)		$ (100,000)
Tax benefit (expense)		(4,300,000)		1,300,000		3,400,000
Unrealized gain (loss) on designated cash flow hedge	[1]	13,900,000	[2]	(4,300,000)	[3]	(9,000,000.0)	[4]
Cash flow hedge gain (loss) amortized into interest rate expense		18,300,000		14,500,000		400,000
Cash flow hedge gain (loss) amortized into interest rate expense in the next 12 months		100,000
Fair value of derivative liabilities—current		(34,900,000)		(37,100,000)
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		18,200,000		(5,600,000)		$ (12,400,000)
Fair value of derivative liabilities—current		$ 0		$ (7,600,000)

[1] Includes a tax expense of $4.3 million for the year ended December 31, 2021 and a tax benefit of $1.3 million and $3.4 million for the years ended December 31, 2020 and 2019, respectively.

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

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

[4] Includes a tax benefit of $3.4 million.