v2.4.1.9

Financing (Detail Of Debt Repayments) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2015 | Jan. 31, 2015 | Feb. 01, 2014 | Feb. 02, 2013
Extinguishment of debt | $ 407 us-gaap_ExtinguishmentOfDebtAmount |  |  |
Debt repaid |  | 870 us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations | 124 us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations | 1,803 us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations
5.90% Senior Notes Due 2016 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_FivePointNinePercentSeniorNotesDueTwoThousandSixteenMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_FivePointNinePercentSeniorNotesDueTwoThousandSixteenMember | 400 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_FivePointNinePercentSeniorNotesDueTwoThousandSixteenMember
7.875% Senior Notes Due 2015 [Member] |  |  |  |
Extinguishment of debt |  | 407 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFifteenMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFifteenMember | 205 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFifteenMember
7.45% Senior Debentures Due 2016 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointFourFivePercentSeniorDebenturesDueTwoThousandSixteenMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointFourFivePercentSeniorDebenturesDueTwoThousandSixteenMember | 64 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointFourFivePercentSeniorDebenturesDueTwoThousandSixteenMember
7.5% Senior Debentures Due 2015 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointFivePercentSeniorDebenturesDueTwoThousandFifteenMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointFivePercentSeniorDebenturesDueTwoThousandFifteenMember | 31 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = m_SevenPointFivePercentSeniorDebenturesDueTwoThousandFifteenMember
Five point seven five percent senior notes due 2014[Member] [Member] |  |  |  |
Extinguishment of debt |  | 453 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_Fivepointsevenfivepercentseniornotesdue2014MemberMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_Fivepointsevenfivepercentseniornotesdue2014MemberMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_Fivepointsevenfivepercentseniornotesdue2014MemberMember
7.625% Senior Debentures Due 2013 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_SevenPointSixTwoFivePercentSeniorDebenturesMember | 109 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_SevenPointSixTwoFivePercentSeniorDebenturesMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_SevenPointSixTwoFivePercentSeniorDebenturesMember
5.35% Senior Notes Due 2012 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_FivePointThreeFivePercentSeniorNotesDueTwoThousandTwelveMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_FivePointThreeFivePercentSeniorNotesDueTwoThousandTwelveMember | 616 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_FivePointThreeFivePercentSeniorNotesDueTwoThousandTwelveMember
5.875% Senior Notes Due 2013 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_FivePointEightSevenFivePercentSeniorNotesDueTwoThousandThirteenMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_FivePointEightSevenFivePercentSeniorNotesDueTwoThousandThirteenMember | 298 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_FivePointEightSevenFivePercentSeniorNotesDueTwoThousandThirteenMember
8.0% Senior Debentures Due 2012 [Member] |  |  |  |
Extinguishment of debt |  | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_EightPercentSeniorDebenturesDueTwoThousandTwelveMember | 0 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_EightPercentSeniorDebenturesDueTwoThousandTwelveMember | 173 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_EightPercentSeniorDebenturesDueTwoThousandTwelveMember
9.5% Amortizing Debentures Due 2021 [Member] |  |  |  |
Extinguishment of debt |  | 4 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_NinePointFivePercentAmortizingDebenturesDueTwoThousandTwentyOneMember | 4 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_NinePointFivePercentAmortizingDebenturesDueTwoThousandTwentyOneMember | 4 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_NinePointFivePercentAmortizingDebenturesDueTwoThousandTwentyOneMember
9.75% Amortizing Debentures Due 2021 [Member] |  |  |  |
Extinguishment of debt |  | 2 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_NinePointSevenFivePercentAmortizingDebenturesDueTwoThousandTwentyOneMember | 2 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_NinePointSevenFivePercentAmortizingDebenturesDueTwoThousandTwentyOneMember | 2 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_NinePointSevenFivePercentAmortizingDebenturesDueTwoThousandTwentyOneMember
Capital Lease and Other Long-Term Obligations [Member] |  |  |  |
Extinguishment of debt |  | $ 4 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_CapitalLeaseAndOtherLongTermObligationsMember | $ 9 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_CapitalLeaseAndOtherLongTermObligationsMember | $ 10 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_ShortTermDebtTypeAxis = m_CapitalLeaseAndOtherLongTermObligationsMember

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