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Recently Issued Accounting Standards - Additional Information (Detail)	Aug. 31, 2018
Schedule Of Defined Benefit Plans Disclosures [Line Items]
Effect of health care cost trend rate	1.00%

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- Definition

Schedule Of Defined Benefit Plans Disclosures [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	fbhs_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

+ 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 (l)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

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