v3.25.4
Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning of period     $ 343,479  
Other comprehensive income (loss) $ 59 $ (1,434) 645 $ (26)
Balance, end of period 390,875 302,695 390,875 302,695
Derivatives        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning of period (11) (13) (8) (3)
Unrealized gains (losses), net of tax (9) (50) (16) (21)
Tax benefit included in provision for income taxes (1) (22) (2) (12)
Amounts reclassified from accumulated other comprehensive loss 6 84 10 45
Other comprehensive income (loss) (3) 34 (6) 24
Balance, end of period (14) 21 (14) 21
Derivatives | Other Income (Expense), Net        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification adjustments for losses included in other income (expense), net 7 106 12 57
Investments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning of period (364) (1,511) (1,051) (2,625)
Unrealized gains (losses), net of tax (170) (453) 525 665
Tax benefit included in provision for income taxes (2) (5) 0 (4)
Amounts reclassified from accumulated other comprehensive loss 9 19 1 15
Other comprehensive income (loss) (161) (434) 526 680
Balance, end of period (525) (1,945) (525) (1,945)
Investments | Other Income (Expense), Net        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification adjustments for losses included in other income (expense), net 11 24 1 19
Translation adjustments and other        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning of period (2,386) (2,658) (2,288) (2,962)
Other comprehensive income (loss) 223 (1,034) 125 (730)
Balance, end of period (2,163) (3,692) (2,163) (3,692)
Accumulated other comprehensive loss        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning of period (2,761) (4,182) (3,347) (5,590)
Other comprehensive income (loss) 59 (1,434) 645 (26)
Balance, end of period $ (2,702) $ (5,616) $ (2,702) $ (5,616)