Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ 206,223
Other comprehensive income (loss)	(594)	$ (2,665)
Balance, end of period	220,714	173,566
Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(27)	(13)
Unrealized losses, net of tax	(15)	(40)
Tax benefit included in provision for income taxes	(10)	(12)
Amounts reclassified from accumulated other comprehensive loss	36	47
Other comprehensive income (loss)	21	7
Balance, end of period	(6)	(6)
Derivatives | Other Income (Expense), Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustments for losses included in other income (expense), net	46	59
Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(3,582)	(2,138)
Unrealized losses, net of tax	(283)	(1,925)
Tax benefit included in provision for income taxes	(6)	(7)
Amounts reclassified from accumulated other comprehensive loss	23	28
Other comprehensive income (loss)	(260)	(1,897)
Balance, end of period	(3,842)	(4,035)
Investments | Other Income (Expense), Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustments for losses included in other income (expense), net	29	35
Translation adjustments and other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(2,734)	(2,527)
Other comprehensive income (loss)	(355)	(775)
Balance, end of period	(3,089)	(3,302)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(6,343)	(4,678)
Other comprehensive income (loss)	(594)	(2,665)
Balance, end of period	$ (6,937)	$ (7,343)