Financing Arrangements - Carrying amount (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Financing Arrangements
Long-term debt	$ 1,739	$ 1,738
Total short-term borrowings	652	308
Total debt	$ 2,391	$ 2,046
2.9% senior notes due June 1, 2030
Financing Arrangements
Debt, interest rate (as a percent)	2.90%	2.90%
Long-term debt	$ 595	$ 595
3.2% senior notes due October 1, 2026
Financing Arrangements
Debt, interest rate (as a percent)	3.20%	3.20%
Long-term debt	$ 498	$ 498
3.9% senior notes due June 1, 2050
Financing Arrangements
Debt, interest rate (as a percent)	3.90%	3.90%
Long-term debt	$ 390	$ 390
6.625% senior notes due April 15, 2037
Financing Arrangements
Debt, interest rate (as a percent)	6.625%	6.625%
Long-term debt	$ 253	$ 253
Other long-term borrowings
Financing Arrangements
Long-term debt	3	2
Commercial paper
Financing Arrangements
Short-term borrowings	558	250
Other short-term borrowings
Financing Arrangements
Short-term borrowings	$ 94	$ 58