Revenue recognition - Narrative (Details) $ in Millions	12 Months Ended
	Jun. 30, 2025 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized	$ 165
Remaining performance obligation, amount	$ 11,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (as percent)	71.00%
Remaining performance obligation, period (in months)	12 months