Debt and Financing Arrangements (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Fair value of long-term debt, excluding current portion	$ 7,200	$ 7,100
Long-term debt	$ 7,606	$ 7,580
Weighted average interest rate on short term borrowings (as a percent)	4.50%	4.70%
Line of Credit
Debt Instrument [Line Items]
Lines of credit	$ 12,500	$ 13,000
Unused lines of credit	9,500	9,100
Commercial Paper
Debt Instrument [Line Items]
Lines of credit	5,100	5,100
Amount utilized from lines of credit facility	$ 721	$ 1,700