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Leases - Summary of Lease information (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Leases [Abstract]
Non-cash component of lease expense			$ 24.3	$ 22.8
Increase (decrease) in right-of-use asset	$ 11.0	$ 15.4

X

- Definition

Increase (decrease) in right-of-use asset.

+ References

No definition available.

+ Details

Name:	chd_IncreaseDecreaseInRightOfUseAsset
Namespace Prefix:	chd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of amortization expense attributable to right-of-use asset from operating lease.

+ References

No definition available.

+ Details

Name:	chd_OperatingLeaseRighOfUseAssetAmortization
Namespace Prefix:	chd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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