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Retirement Benefit Obligations - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Net pension and postretirement benefits liability	$ (32)	$ (102)
Net periodic benefit costs	0	(1)	$ 7
Pension plan contributions for next fiscal year	12
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligations	$ 1,011	$ 1,457
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Pension asset portfolio, percentage	17.00%
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Pension asset portfolio, percentage	76.00%
Cash and other
Defined Benefit Plan Disclosure [Line Items]
Pension asset portfolio, percentage	7.00%