Restructuring Program - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2025	Sep. 30, 2024	Dec. 31, 2024	Mar. 31, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Foreign currency translation gain (loss)		$ (800)
Incremental restructuring charges incurred					$ 1,200
Restructuring charges	$ 55		$ 933	$ 987
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	26			105
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	23			91
Other Non-operating Income (Expense)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6			791
Minimum
Restructuring Cost and Reserve [Line Items]
Historical restructuring costs, before tax	250			250
Maximum
Restructuring Cost and Reserve [Line Items]
Historical restructuring costs, before tax	$ 500			$ 500