Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Financing arrangements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Repayments of debt	$ 1,500	$ 2,200	$ 5,000	$ 3,600
Extinguishment of debt	81	249	683	659
Gain on extinguishment of debt	$ 36	82	$ 264	215
Notes
Debt Instrument [Line Items]
Basis spread on variable rate			1.225%
4.563% notes due 2048 (4.563% 2048 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	4.563%		4.563%
Effective interest rate	6.30%		6.30%
4.663% notes due 2051 (4.663% 2051 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	4.663%		4.663%
Effective interest rate	5.60%		5.60%
2.77% notes due 2053 (2.77% 2053 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	2.77%		2.77%
Effective interest rate	5.20%		5.20%
Various Long-Term Notes \| Notes
Debt Instrument [Line Items]
Repayments of debt	$ 119	$ 331	$ 1,000	$ 875
2.00% notes due 2032 (2.00% 2032 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	2.00%		2.00%
3.15% notes due 2040 (3.15% 2040 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	3.15%	3.15%	3.15%	3.15%
2.80% notes due 2041 (2.80% 2041 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	2.80%	2.80%	2.80%	2.80%
3.375% notes due 2050 (3.375% 2050 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	3.375%	3.375%	3.375%	3.375%
3.00% notes due 2052 (3.00% 2052 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%	3.00%	3.00%	3.00%
4.20% notes due 2052 (4.20% 2052 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	4.20%	4.20%	4.20%	4.20%
4.40% notes due 2062 (4.40% 2062 Notes) \| Notes
Debt Instrument [Line Items]
Interest rate, stated percentage	4.40%	4.40%	4.40%	4.40%