Revenues - Revenue Remaining Performance Obligation (Details) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 116	$ 296
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	417	417
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 56	$ 56
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 154	$ 154
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 69	$ 69
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period