Long-Term Debt (Summary of Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Long-term debt	$ 25,709	$ 24,926
Less current portion of long-term debt	1,569	1,527
Long-term debt excluding current portion	24,140	23,399
Notes 2.450% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 23,029	$ 21,784
Notes 2.450% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate	2.45%
Notes 2.450% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate	10.20%
Notes 2.450% To 10.20%, interest payable semi-annually, due through 2061 [Member] | Notes [Member] | Weighted Average [Member]
Debt Instrument [Line Items]
Weighted average interest rate	4.70%	4.60%
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, 2.200% to 3.125%, interest payable annually, due through 2031 [Member] | Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term debt	$ 2,638	$ 3,100
Euro notes, 2.200% to 3.125%, interest payable annually, due through 2031 [Member] | Notes Payable, Other Payables [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate	2.20%
Euro notes, 2.200% 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, 2.200% 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	2.70%	2.50%