Revenues - Practical expedients and other revenue disclosures (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2023 USD ($)
Disaggregation of Revenue [Line Items]
Revenue from performance obligation	$ 389
Revenue from remaining performance obligation	1,219
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01
Disaggregation of Revenue [Line Items]
Revenue from remaining performance obligation	$ 443
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Disaggregation of Revenue [Line Items]
Revenue from remaining performance obligation	$ 233
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01
Disaggregation of Revenue [Line Items]
Revenue from remaining performance obligation	$ 183
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-01
Disaggregation of Revenue [Line Items]
Expected timing of satisfaction