Equity - Schedule of Changes in Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 13,691	$ 12,081
Net income	808	698
Other comprehensive income	(41)	348
Dividends paid	(228)	(210)
Stock incentive plan activity	35	34
Shares purchased at cost, including excise tax	(479)
Shares purchased at cost	(475)	(50)
Ending balance	$ 13,786	$ 12,901
Dividends paid (in USD per share)	$ 1.80	$ 1.63
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 91	$ 91
Ending balance	91	91
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	194	264
Stock incentive plan activity	629	11
Ending balance	823	275
Additional Paid-in Capital | Revision of Prior Period, Reclassification, Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock incentive plan activity	578
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	21,775	19,105
Net income	808	698
Dividends paid	(228)	(210)
Ending balance	22,355	19,593
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(883)	(1,438)
Other comprehensive income	(41)	348
Ending balance	(924)	(1,090)
Treasury Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(7,495)	(5,950)
Stock incentive plan activity	(594)	23
Shares purchased at cost, including excise tax	(479)
Shares purchased at cost		(50)
Ending balance	(8,568)	(5,977)
Treasury Shares | Revision of Prior Period, Reclassification, Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock incentive plan activity	(578)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	9	9
Ending balance	$ 9	$ 9