Financial Derivative Instruments and Risk Management - Assets and Liabilities Associated with Fuel and Interest Rate Derivative Instruments (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Interest Rate Swap \| Other Noncurrent Assets
Derivative [Line Items]
Derivative, other current assets	$ 8,000,000	$ 0

Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

No definition available.

Name:	us-gaap_DerivativeInstrumentsInHedgesAssetsAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant