XML 103 R85.htm IDEA: XBRL DOCUMENT
v3.19.1

Segment Information - Additional Information (Detail) | 3 Months Ended
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Mar. 31, 2019 Segment
Sales Information [Line Items] |
Number of reportable segments | 4

X
- Definition Sales Information [Line Items] + References No definition available. + Details
Name: | nwl_SalesInformationLineItems
Namespace Prefix: | nwl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration