XML 108 R9999.htm IDEA: XBRL DOCUMENT v3.22.0.1

Label	Element	Value
Repayments Of Other Long-Term Debt And Finance Lease Obligations	luv_RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	$ 839,000,000
Repayments Of Other Long-Term Debt And Finance Lease Obligations	luv_RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	$ 612,000,000

X

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Repayments Of Other Long-Term Debt And Finance Lease Obligations

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Name:	luv_RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations
Namespace Prefix:	luv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration