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Debt - Schedule of Total Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Jun. 05, 2024	May 13, 2024	Dec. 31, 2023	May 23, 2022
Short-term debt:
Commercial Paper	$ 529			$ 1,954
Total short-term debt	3,027			1,954
Long-term debt:
Total long-term debt	17,341			20,659
Total debt	20,368			22,613
Line of Credit \| 2025 Term Loan due August 31, 2025
Long-term debt:
Senior notes	0			1,600
Senior Notes \| 2025 Senior Notes (3.65%; unsecured due May 23, 2025)
Short-term debt:
Senior notes	$ 1,249			0
Senior Notes \| 2025 Senior Notes (3.75% senior notes due December 1, 2025)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.75%				3.65%
Short-term debt:
Senior notes	$ 1,249			0
Long-term debt:
Senior notes	0			1,248
Total debt	$ 1,249			1,248
Senior Notes \| 2025 Senior Notes (3.65% senior notes due May 23, 2025)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.65%
Long-term debt:
Senior notes	$ 0			1,246
Total debt	$ 1,249			1,246
Senior Notes \| 2027 Senior Notes (4.00% senior notes due September 15, 2027)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	4.00%				4.00%
Long-term debt:
Senior notes	$ 1,492			1,489
Total debt	$ 1,492			1,489
Senior Notes \| 2027 Senior Notes (3.10% senior notes due September 15, 2027)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.10%
Long-term debt:
Senior notes	$ 498			498
Total debt	$ 498			498
Senior Notes \| 2028 Senior Notes (3.625% senior notes due September 1, 2028)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.625%	3.625%
Long-term debt:
Senior notes	$ 937	$ 1,000		920
Total debt	$ 937			920
Senior Notes \| 2028 Senior Notes (3.75% senior notes due September 21, 2028)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.75%
Long-term debt:
Senior notes	$ 596			596
Total debt	$ 596			596
Senior Notes \| 2029 Senior Notes (4.35% senior notes due June 15, 2029)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	4.35%				4.35%
Long-term debt:
Senior notes	$ 1,243			1,241
Total debt	$ 1,243			1,241
Senior Notes \| 2030 Senior Notes (2.10% senior notes due June 15, 2030)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	2.10%
Long-term debt:
Senior notes	$ 1,240			1,238
Total debt	$ 1,240			1,238
Senior Notes \| 5.25% Senior Notes due June 15, 2031
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	5.25%		5.25%
Long-term debt:
Senior notes	$ 743			0
Total debt	$ 743			0
Senior Notes \| 2032 Senior Notes (1.85% senior notes due September 15, 2032)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	1.85%
Long-term debt:
Senior notes	$ 1,488			1,486
Total debt	$ 1,488			1,486
Senior Notes \| 2033 Senior Notes (4.60% senior notes due March 15, 2033)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	4.60%				4.60%
Long-term debt:
Senior notes	$ 1,490			1,489
Total debt	$ 1,490			1,489
Senior Notes \| 2040 Senior Notes (2.65% senior notes due September 15, 2040)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	2.65%
Long-term debt:
Senior notes	$ 1,233			1,232
Total debt	$ 1,233			1,232
Senior Notes \| 2048 Senior Notes (4.25% senior notes due September 21, 2048)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	4.25%
Long-term debt:
Senior notes	$ 1,233			1,232
Total debt	$ 1,233			1,232
Senior Notes \| 2050 Senior Notes (3.00% senior notes due June 15, 2050)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.00%
Long-term debt:
Senior notes	$ 1,223			1,222
Total debt	$ 1,223			1,222
Senior Notes \| 2052 Senior Notes (4.95% senior notes due June 15, 2052)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	4.95%				4.95%
Long-term debt:
Senior notes	$ 1,467			1,466
Total debt	$ 1,467			1,466
Senior Notes \| 2060 Senior Notes (3.00% senior notes due September 15, 2060)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	3.00%
Long-term debt:
Senior notes	$ 1,473			1,472
Total debt	$ 1,473			1,472
Senior Notes \| 2062 Senior Notes (5.20% senior notes due June 15, 2062)
Debt Instrument [Line Items]
Interest rate, stated percentage (in percentage)	5.20%				5.20%
Long-term debt:
Senior notes	$ 985			984
Total debt	$ 985			$ 984