Debt - Credit Facility (Details) - Revolving credit facility [Member]	Mar. 31, 2022 USD ($)
U.S. revolving credit facility [Member]
Line of Credit Facility [Line Items]
Credit facility face amount	$ 220,000,000
Outstanding borrowings	35,300,000
Outstanding letters of credit issued	102,100,000
Credit facility maximum amount	220,000,000.0
Borrowing availability	220,000,000.0
Borrowing availability, net of borrowings	82,700,000
U.S. letter of credit [Member]
Line of Credit Facility [Line Items]
Letter of credit sub-facility amount	110,000,000
Iceland revolving line of credit [Member]
Line of Credit Facility [Line Items]
Outstanding borrowings	35,000,000.0
Outstanding letters of credit issued	0
Credit facility maximum amount	80,000,000
Borrowing availability	80,000,000.0
Borrowing availability, net of borrowings	$ 45,000,000.0