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Equity-Based Compensation - Narrative (Detail)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
shares
Dec. 31, 2021
USD ($)
plan
shares
Dec. 31, 2020
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of equity plans | plan     1  
Total estimated compensation cost, not yet recognized, related to non-vested equity awards | $ $ 110   $ 110  
Stock Options        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock options outstanding (in shares) 6.0 7.0 6.0 7.0
Restricted Stock Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock units vested (in shares)     2.4 3.5
Stock units granted (in shares)     1.7 2.0
Vesting period     3 years  
Performance-Based Stock Options        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period     3 years  
Stock units granted (in shares) 4.0 5.0    
Stock options expiration period     7 years  
Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted average future period unrecognized compensation cost related to equity based awards is expected to be recognized     1 year  
Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted average future period unrecognized compensation cost related to equity based awards is expected to be recognized     2 years