XML 78 R56.htm IDEA: XBRL DOCUMENT v3.25.0.1

ACCOUNTING POLICIES - Noncontrolling Interest (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Hansgrohe SE
Noncontrolling interest
Ownership (as a percent)	68.00%	68.00%

X

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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_SubsidiaryOrEquityMethodInvesteeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mas_HansgroheSEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: