Fair Value Measurements - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2022	May 23, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	$ 18,113		$ 13,918
Fair value	16,410
Other short-term debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	4
Fair value	$ 4
2025 Senior Notes (3.65% senior unsecured notes due May 23, 2025) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	3.65%
Carrying Amount	$ 1,242
Fair value	$ 1,242
2025 Senior Notes (3.75% senior unsecured notes due December 1, 2025) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	3.75%	3.65%
Carrying Amount	$ 1,247
Fair value	$ 1,241
2027 Senior Notes (4.00% senior unsecured notes due September 15, 2027) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	4.00%	4.00%
Carrying Amount	$ 1,485
Fair value	$ 1,477
2027 Senior Notes (3.10% senior unsecured notes due September 15, 2027) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	3.10%
Carrying Amount	$ 497
Fair value	$ 473
2028 Senior Notes (3.75% senior unsecured notes due September 21, 2028) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	3.75%
Carrying Amount	$ 594
Fair value	$ 577
2029 Senior Notes (4.35% senior unsecured notes due June 15, 2029) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	4.35%	4.35%
Carrying Amount	$ 1,239
Fair value	$ 1,234
2030 Senior Notes (2.10% senior unsecured notes due June 15, 2030) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	2.10%
Carrying Amount	$ 1,235
Fair value	$ 1,048
2032 Senior Notes (1.85% senior unsecured notes due September 15, 2032) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	1.85%
Carrying Amount	$ 1,484
Fair value	$ 1,176
2033 Senior Notes (4.60% senior unsecured notes due March 15, 2033) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	4.60%	4.60%
Carrying Amount	$ 1,487
Fair value	$ 1,492
2040 Senior Notes (2.65% senior unsecured notes due September 15, 2040) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	2.65%
Carrying Amount	$ 1,230
Fair value	$ 919
2048 Senior Notes (4.25% senior unsecured notes due September 21, 2048) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	4.25%
Carrying Amount	$ 1,231
Fair value	$ 1,118
2050 Senior Notes (3.00% senior unsecured notes due June 15, 2050) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	3.00%
Carrying Amount	$ 1,221
Fair value	$ 913
2052 Senior Notes (4.95% senior unsecured notes due June 15, 2052) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	4.95%	4.95%
Carrying Amount	$ 1,463
Fair value	$ 1,478
2060 Senior Notes (3.00% senior unsecured notes due September 15, 2060) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	3.00%
Carrying Amount	$ 1,471
Fair value	$ 1,018
2062 Senior Notes (5.20% senior unsecured notes due June 15, 2062) | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate, stated percentage	5.20%	5.20%
Carrying Amount	$ 983
Fair value	$ 1,000