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Benefit Plans (Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 29, 2017 | Jul. 30, 2016 | Jul. 29, 2017 | Jul. 30, 2016
Total Retirement Expense | $ 11 | $ 12 | $ 20 | $ 25
Settlement charges | 51 | 6 | 51 | 19
Nonqualified Plan [Member] |  |  |  |
Defined contribution plans expense | 0 | 1 | 0 | 1
Qualified Plan [Member] |  |  |  |
Defined contribution plans expense | 24 | 25 | 45 | 49
Pension Plan [Member] |  |  |  |
Service cost | 2 | 1 | 3 | 2
Interest cost | 27 | 28 | 54 | 56
Expected return on assets | (57) | (58) | (113) | (114)
Recognition of net actuarial (gain) loss | 8 | 7 | 16 | 15
Amortization of prior service credit | 0 | 0 | 0 | 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (20) | (22) | (40) | (41)
Supplemental Employee Retirement Plan [Member] |  |  |  |
Service cost | 0 | 0 | 0 | 0
Interest cost | 5 | 6 | 11 | 12
Recognition of net actuarial (gain) loss | 2 | 2 | 4 | 4
Amortization of prior service credit | 0 | 0 | 0 | 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 7 | 8 | 15 | 16
Other Postretirement Benefits Plan [Member] |  |  |  |
Service cost | 0 | 0 | 0 | 0
Interest cost | 2 | 1 | 3 | 3
Recognition of net actuarial (gain) loss | (1) | (1) | (2) | (2)
Amortization of prior service credit | 0 | 0 | 0 | 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ 1 | $ 0 | $ 1 | $ 1

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- Definition Amount of retirement expenses, including 401(k) defined contribution plan, pension plan, and supplementary retirement plan + References No definition available. + Details
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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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