SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) $ in Millions	3 Months Ended
Dec. 31, 2017 USD ($)
Accounting Policies [Abstract]
Tax Cuts and Jobs Act of 2017, provisional income tax benefit	$ 81

Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)

No definition available.

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Namespace Prefix:	clx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration