XML 103 R76.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Debt - Summary of Debt (Parenthetical) (Detail) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
2.15% Senior Notes Due 2018 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 2.15% | 2.15%
Maturity year |  | 2018 | 2018
2.60% Senior Notes Due 2019 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 2.60% | 2.60%
Maturity year |  | 2019 | 2019
2.875% Senior Notes Due 2019 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 2.875% | 2.875% | 2.875%
Maturity year | 2019 | 2019 | 2019
4.70% Senior Notes Due 2020 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 4.70% | 4.70%
Maturity year |  | 2020 | 2020
3.15% Senior Notes Due 2021 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.15% | 3.15% | 3.15%
Maturity year | 2021 | 2021 | 2021
3.75% Senior Notes Due 2021 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 3.75% | 3.75%
Maturity year |  | 2021 | 2021
4.00% Senior Notes Due 2022 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 4.00% | 4.00%
Maturity year |  | 2022 | 2022
3.85% Senior Notes Due 2023 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.85% | 3.85% | 3.85%
Maturity year | 2023 | 2023 | 2023
5.00% Senior Notes Due 2023 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 5.00% | 5.00%
Maturity year |  | 2023 | 2023
4.00% Senior Notes Due 2024 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 4.00% | 4.00%
Maturity year |  | 2024 | 2024
3.90% Senior Notes Due 2025 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 3.90% | 3.90%
Maturity year |  | 2025 | 2025
4.20% Senior Notes Due 2026 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 4.20% | 4.20% | 4.20%
Maturity year | 2026 | 2026 | 2026
5.375% Senior Notes Due 2036 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 5.375% | 5.375%
Maturity year |  | 2036 | 2036
5.50% Senior Notes Due 2046 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  | 5.50% | 5.50%
Maturity year |  | 2046 | 2046

X
- Definition Debt instruments maturity year. + References No definition available. + Details
Name: | nwl_DebtInstrumentsMaturityYear
Namespace Prefix: | nwl_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A2.15seniornotesdue2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A2.60SeniorNotesdue2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A2.875seniornotesdue2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A470SeniorNotesDue2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A3.15SeniorNotesdue2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A3.75SeniorExchangeNotesdue2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A400SeniorNotesDue2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A3.85SeniorNotesdue2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A5SeniorExchangeNotesdue2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A4.00SeniorNotesDue2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A3.90SeniorNotesDue2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A4.20SeniorNotesdue2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A5.375SeniorNotesdue2036Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nwl_A5.5SeniorNotesdue2046Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |