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Postretirement Health Care and Life Insurance Benefits (Net Periodic Benefit Cost) (Details) - Other Postretirement Benefits Plan [Member] - USD ($) $ in Millions | 12 Months Ended
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Feb. 01, 2020 | Feb. 02, 2019 | Feb. 03, 2018
Service cost | $ 0 | $ 0 | $ 0
Interest cost | 5 | 5 | 5
Amortization of net actuarial (gain) loss | (6) | (5) | (5)
Amortization of prior service credit | (1) | (1) | 0
Total net periodic benefit cost | (2) | (1) | 0
Net actuarial (gain) loss recognized in OCI before tax | 5 | (11) | (9)
Amortization of net actuarial loss | 6 | 5 | 5
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax | 1 | 1 | 0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | 0 | 0 | (10)
Total recognized in other comprehensive income | 12 | (5) | (14)
Total recognized in net periodic benefit cost and other comprehensive income | $ 10 | $ (6) | $ (14)

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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