Income Taxes Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2024
Income Taxes
Provision for/(benefit from) income taxes	$ (124)	$ 33
Effective Income Tax Rate Reconciliation, Percent	23.00%	75.10%
Unrecognized tax benefits	$ 952		$ 981	$ 981
Unrecognized tax benefits that would impact effective tax rate	871		882	882
Unrecognized tax benefits, interest and penalties accrued	69		65	65
FY24 Q1 GMPD Goodwill Impairment [Member]
Income Taxes
Provision for/(benefit from) income taxes			$ (102)	$ 45
GMPD
Income Taxes
Goodwill impairment		$ 585
Minimum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	0
Maximum
Income Taxes
Estimated range of decrease in unrecognized tax benefits within the next 12 months	$ 20
Federal | Minimum
Income Taxes
Open Tax Year	2015