Assets and Liabilities Measured at Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Carrying Amount
Current and long-term debt, carrying amount	$ (2,466,068)	$ (2,988,067)
Fair Value
Current and long-term debt, fair value	$ (2,666,773)	$ (2,948,171)