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v3.25.3

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

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration