Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets:
Investments	$ 9	$ 10
Foreign Exchange Contracts	20	10
Total Assets at Fair Value	29	20
Liabilities:
Foreign Exchange Contracts	14	5
Total Liabilities at Fair Value	14	5
Supplemental Fair Value Information
Notes Payable and Overdrafts (Note 9)	570	406
Carrying amount — liability	7,557	6,736
Fixed Rate Debt, Excluding Capital Leases
Supplemental Fair Value Information
Notes Payable and Overdrafts (Note 9)	254	227
Carrying amount — liability	5,780	5,781
Fair value — liability	5,559	6,149
Variable Rate Debt, Excluding Capital Leases
Supplemental Fair Value Information
Notes Payable and Overdrafts (Note 9)	316	179
Carrying amount — liability	1,777	955
Fair value — liability	1,763	955
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)
Assets:
Investments	9	10
Foreign Exchange Contracts	0	0
Total Assets at Fair Value	9	10
Liabilities:
Foreign Exchange Contracts	0	0
Total Liabilities at Fair Value	0	0
Supplemental Fair Value Information
Fair value — liability	5,308	5,905
Significant Other Observable Inputs (Level 2)
Assets:
Investments	0	0
Foreign Exchange Contracts	20	10
Total Assets at Fair Value	20	10
Liabilities:
Foreign Exchange Contracts	14	5
Total Liabilities at Fair Value	14	5
Significant Unobservable Inputs (Level 3)
Assets:
Investments	0	0
Foreign Exchange Contracts	0	0
Total Assets at Fair Value	0	0
Liabilities:
Foreign Exchange Contracts	0	0
Total Liabilities at Fair Value	$ 0	$ 0