AUGUST 2023 CYBERATTACK - Schedule of Recognition of Costs, Net of Insurance Recoveries (Details) - Cyberattack - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Unusual or Infrequent Item, or Both [Line Items]
Cyberattack costs, net of insurance recoveries		$ (70)	$ 29
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Unusual or Infrequent Item, or Both [Line Items]
Cyberattack costs, net of insurance recoveries		(5)	17
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Unusual or Infrequent Item, or Both [Line Items]
Cyberattack costs, net of insurance recoveries		0	12
Income Statement Location [Axis]: clx:OtherExpenseIncomeNet
Unusual or Infrequent Item, or Both [Line Items]
Cyberattack costs, net of insurance recoveries	$ 0	$ (65)	$ 0