Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period			$ 166,542
Other comprehensive income (loss)	$ 813	$ (2,913)	(966)	$ (4,298)
Balance, end of period	194,683	162,924	194,683	162,924
Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(38)	(17)	(13)	(19)
Unrealized gains (losses), net of tax	5	(6)	14	(27)
Tax expense (benefit) included in provision for income taxes	4	(3)	14	(9)
Amounts reclassified from accumulated other comprehensive loss	(14)	12	(48)	35
Other comprehensive income (loss)	(9)	6	(34)	8
Balance, end of period	(47)	(11)	(47)	(11)
Derivatives | Other Income (Expense), Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustments for (gains) losses included in other income (expense), net	(18)	15	(62)	44
Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(3,687)	2,057	(2,138)	3,222
Unrealized gains (losses), net of tax	732	(2,894)	(851)	(4,051)
Tax expense (benefit) included in provision for income taxes	(5)	(3)	(13)	(1)
Amounts reclassified from accumulated other comprehensive loss	21	12	55	4
Other comprehensive income (loss)	753	(2,882)	(796)	(4,047)
Balance, end of period	(2,934)	(825)	(2,934)	(825)
Investments | Other Income (Expense), Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustments for (gains) losses included in other income (expense), net	26	15	68	5
Translation adjustments and other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(2,732)	(1,603)	(2,527)	(1,381)
Other comprehensive income (loss)	69	(37)	(136)	(259)
Balance, end of period	(2,663)	(1,640)	(2,663)	(1,640)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(6,457)	437	(4,678)	1,822
Other comprehensive income (loss)	813	(2,913)	(966)	(4,298)
Balance, end of period	$ (5,644)	$ (2,476)	$ (5,644)	$ (2,476)