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v2.4.1.9

DEBT (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Debt |  |
Long-term debt includes notes and debentures | $ 3,424 us-gaap_LongTermDebt | $ 3,427 us-gaap_LongTermDebt
Less: Current portion | 505 us-gaap_NotesPayableCurrent | 6 us-gaap_NotesPayableCurrent
Total long-term debt | 2,919 us-gaap_LongTermDebtNoncurrent | 3,421 us-gaap_LongTermDebtNoncurrent
4.8% Notes and Debentures Due 15 June 2015 |  |
Debt |  |
Long-term debt includes notes and debentures | 500 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesThreeMember | 500 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesThreeMember
Interest rate (as a percent) | 4.80%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesThreeMember |
6.125% Notes and Debentures Due 3 October 2016 |  |
Debt |  |
Long-term debt includes notes and debentures | 1,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesFourMember | 1,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesFourMember
Interest rate (as a percent) | 6.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesFourMember |
5.85% Notes and Debentures Due 15 March 2017 |  |
Debt |  |
Long-term debt includes notes and debentures | 300 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesFiveMember | 300 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesFiveMember
Interest rate (as a percent) | 5.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesFiveMember |
6.625% Notes and Debentures Due 15 April 2018 |  |
Debt |  |
Long-term debt includes notes and debentures | 114 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesSixMember | 114 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesSixMember
Interest rate (as a percent) | 6.625%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesSixMember |
7.125% Notes and Debentures Due 15 March 2020 |  |
Debt |  |
Long-term debt includes notes and debentures | 500 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesSevenMember | 500 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesSevenMember
Interest rate (as a percent) | 7.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesSevenMember |
5.95% Notes and Debentures Due 15 March 2022 |  |
Debt |  |
Long-term debt includes notes and debentures | 400 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesEightMember | 400 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesEightMember
Interest rate (as a percent) | 5.95%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesEightMember |
7.75% Notes and Debentures Due 1 August 2029 |  |
Debt |  |
Long-term debt includes notes and debentures | 296 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesNineMember | 296 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesNineMember
Interest rate (as a percent) | 7.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesNineMember |
6.5% Notes and Debentures Due 15 August 2032 |  |
Debt |  |
Long-term debt includes notes and debentures | 300 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesTenMember | 300 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesTenMember
Interest rate (as a percent) | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = mas_NotesAndDebenturesTenMember |
Other Notes and Debentures |  |
Debt |  |
Long-term debt includes notes and debentures | $ 14 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_OtherNotesAndDebenturesMember | $ 17 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = mas_OtherNotesAndDebenturesMember

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