Significant Accounting Policies - Interest Rate Swaps (Details) $ in Millions	Dec. 31, 2021 USD ($)
Derivatives
Interest Rate Swaps Terminations	$ 850.0
Cash Payments Associated with Interest Rate Swaps Terminations	12.7
December 2021
Derivatives
Interest Rate Swaps Terminations	150.0
Cash Payments Associated with Interest Rate Swaps Terminations	0.0
September 2021
Derivatives
Interest Rate Swaps Terminations	100.0
Cash Payments Associated with Interest Rate Swaps Terminations	0.5
May 2021
Derivatives
Interest Rate Swaps Terminations	100.0
Cash Payments Associated with Interest Rate Swaps Terminations	1.3
December 2020
Derivatives
Interest Rate Swaps Terminations	500.0
Cash Payments Associated with Interest Rate Swaps Terminations	$ 10.9