Lease Accounting (Cash Flow Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 52,326,000	$ 58,979,000	$ 28,576,000
Leased assets obtained in exchange for new operating lease liabilities	18,622,000	150,917,000	9,443,000
Lessor, Lease, Description [Line Items]
Mileage credits	25,100,000	22,500,000	22,400,000
Marine transportation
Lessor, Lease, Description [Line Items]
Lease revenue	28,200,000	$ 23,600,000	$ 16,400,000
Expected undiscounted cash flows, year one	$ 29,600,000