Long-Term Debt (Summary of Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt	$ 24,926	$ 26,233
Less current portion of long-term debt	1,527	1,121
Long-term debt excluding current portion	23,399	25,112
Notes 2.350% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 21,784	$ 22,888
Notes 2.350% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate	2.35%
Notes 2.350% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate	10.20%
Notes 2.350% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member] | Weighted Average [Member]
Debt Instrument [Line Items]
Weighted average interest rate	4.60%	4.50%
USD Debenture, 7.750%, Maturing January 2027 [Member] | Debenture [Member]
Debt Instrument [Line Items]
Long-term debt	$ 42	$ 42
Interest Rate	7.75%
Euro notes, 1.000% to 3.125%, interest payable annually, due through 2031 [Member] | Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term debt	$ 3,100	$ 3,303
Euro notes, 1.000% to 3.125%, interest payable annually, due through 2031 [Member] | Notes Payable, Other Payables [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate	1.70%
Euro notes, 1.000% to 3.125%, interest payable annually, due through 2031 [Member] | Notes Payable, Other Payables [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate	3.125%
Euro notes, 1.000% to 3.125%, interest payable annually, due through 2031 [Member] | Notes Payable, Other Payables [Member] | Weighted Average [Member]
Debt Instrument [Line Items]
Weighted average interest rate	2.50%	2.50%