Loans Payable, Long-Term Debt and Leases - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	May 31, 2024 EUR (€)
Debt Instrument [Line Items]
Long-term debt, current maturities	$ 2,500	$ 1,300
Loans payable and current portion of long-term debt	2,649	$ 1,372
Long-term debt, maturities, repayments of principal in 2025	2,600
Long-term debt, maturities, repayments of principal in 2026	2,200
Long-term debt, maturities, repayments of principal in 2027	1,500
Long-term debt, maturities, repayments of principal in 2028	2,100
Long-term debt, maturities, repayments of principal in 2029	1,700
Long-term debt, interest payments in 2025	1,200
Long-term debt, interest payments in 2026	1,200
Long-term debt, interest payments in 2027	1,100
Long-term debt, interest payments in 2028	1,100
Long-term debt, interest payments in 2029	1,000
Available borrowing capacity under credit facility	$ 6,000
Operating lease, weighted average remaining lease term	6 years	7 years
Operating lease, cost	$ 348	$ 339	$ 334
Operating lease, payments	357	347	335
Right-of-use asset obtained in exchange for operating lease liability	47	$ 122	$ 57
Lessee, operating lease, lease not yet commenced, amount	$ 183
Buildings
Debt Instrument [Line Items]
Operating lease, weighted average remaining lease term	6 years
Lessee, operating lease, renewal term	5 years
Vehicles
Debt Instrument [Line Items]
Operating lease, weighted average remaining lease term	4 years
Senior Notes
Debt Instrument [Line Items]
Face amount of debt | €				€ 3,400,000,000
Other Variable Rate Debt
Debt Instrument [Line Items]
Effective interest rate	5.02%	4.82%
6.30% debentures due 2026
Debt Instrument [Line Items]
Stated interest rate	6.30%
3.25% Notes due 2032 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate				3.25%
Face amount of debt | €				€ 850,000,000
3.50% Notes due 2037 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate				3.50%
Face amount of debt | €				€ 850,000,000
3.70% Notes due 2044 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate				3.70%
Face amount of debt | €				€ 850,000,000
3.75% Notes due 2054 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate				3.75%
Face amount of debt | €				€ 850,000,000
Notes Subject To Repayment At Option Of Holder
Debt Instrument [Line Items]
Loans payable and current portion of long-term debt	$ 149	$ 69
Commercial paper
Debt Instrument [Line Items]
Weighted-average interest rate of commercial paper	5.18%	5.14%