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Label | Element | Value
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Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect | alk_TaxCutsandJobsActReclassificationfromAOCItoRetainedEarningsTaxEffect | $ 0
AOCI Attributable to Parent [Member] |  |
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect | alk_TaxCutsandJobsActReclassificationfromAOCItoRetainedEarningsTaxEffect | (62,000,000)
Retained Earnings [Member] |  |
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect | alk_TaxCutsandJobsActReclassificationfromAOCItoRetainedEarningsTaxEffect | $ 62,000,000

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