Debt - Carrying Value of Outstanding Debt (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2023	Dec. 31, 2022
Long-Term Debt
Hedge accounting fair value adjustments	$ 3	$ 5
Unamortized premium/(discount) and debt issuance costs	(32)	(34)
Current portion of long-term debt	0	(1,150)
Total long-term debt	7,721	7,721
Short-Term Debt
Current portion of long-term debt	0	1,150
Total short-term debt	0	1,150
Total Debt	7,721	8,871
Senior Notes
Long-Term Debt
Total senior notes	7,750	8,900
Senior Notes \| Floating Senior Notes Due 2023
Long-Term Debt
Total senior notes	$ 0	$ 400
Effective interest rate (in percent)	0.00%	3.786%
Senior Notes \| Floating Senior Notes Due 2023 \| London Interbank Offered Rate (LIBOR)
Long-Term Debt
Variable rate (in percent)	0.87%
Senior Notes \| Senior notes due 2023
Long-Term Debt
Coupon rate (in percent)	2.75%
Total senior notes	$ 0	$ 750
Effective interest rate (in percent)	0.00%	2.866%
Senior Notes \| Senior notes due 2024
Long-Term Debt
Coupon rate (in percent)	3.45%
Total senior notes	$ 750	$ 750
Effective interest rate (in percent)	3.531%	3.531%
Senior Notes \| Senior notes due 2025
Long-Term Debt
Coupon rate (in percent)	1.90%
Total senior notes	$ 800	$ 800
Effective interest rate (in percent)	1.803%	1.803%
Senior Notes \| Senior notes due 2025
Long-Term Debt
Coupon rate (in percent)	5.90%
Total senior notes	$ 425	$ 425
Effective interest rate (in percent)	6.036%	6.036%
Senior Notes \| Senior notes due 2026
Long-Term Debt
Coupon rate (in percent)	1.40%
Total senior notes	$ 750	$ 750
Effective interest rate (in percent)	1.252%	1.252%
Senior Notes \| Senior notes due 2027
Long-Term Debt
Coupon rate (in percent)	3.60%
Total senior notes	$ 850	$ 850
Effective interest rate (in percent)	3.689%	3.689%
Senior Notes \| Senior notes due 2027
Long-Term Debt
Coupon rate (in percent)	5.95%	5.95%
Total senior notes	$ 300	$ 300
Effective interest rate (in percent)	6.064%	6.064%
Senior Notes \| Senior notes due 2030
Long-Term Debt
Coupon rate (in percent)	2.70%
Total senior notes	$ 950	$ 950
Effective interest rate (in percent)	2.623%	2.623%
Senior Notes \| Senior notes due 2031
Long-Term Debt
Coupon rate (in percent)	2.60%
Total senior notes	$ 750	$ 750
Effective interest rate (in percent)	2.186%	2.186%
Senior Notes \| Senior notes due 2032
Long-Term Debt
Coupon rate (in percent)	6.30%
Total senior notes	$ 425	$ 425
Effective interest rate (in percent)	6.371%	6.371%
Senior Notes \| Senior notes due 2042
Long-Term Debt
Coupon rate (in percent)	4.00%
Total senior notes	$ 750	$ 750
Effective interest rate (in percent)	4.114%	4.114%
Senior Notes \| Senior notes due 2051
Long-Term Debt
Coupon rate (in percent)	3.65%
Total senior notes	$ 1,000	$ 1,000
Effective interest rate (in percent)	2.517%	2.517%

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Amount of addition (reduction) to long-term debt, hedge accounting, fair value

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Amount of short-term and long-term debt and lease obligation.

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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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Amount of long-term debt and lease obligation, classified as noncurrent.

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