Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2025	Sep. 15, 2025	Dec. 31, 2024	Oct. 31, 2024	Aug. 15, 2024	May 30, 2024
Debt Instrument [Line Items]
Total Long-Term Debt	$ 31,896		$ 30,867
Current portion of long-term debt	(1,099)		(1,649)
Long-term debt, less current portion	$ 30,797		$ 29,218
3.500%, due 2024 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate					3.50%
2.375%, due 2025 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	2.375%		2.375%
Total Long-Term Debt	$ 0		$ 1,250
5.350%, due 2025 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.35%		5.35%
Total Long-Term Debt	$ 0		$ 399
1.500%, due 2026 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	1.50%		1.50%
Total Long-Term Debt	$ 750		$ 749
4.500%, due 2026 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.50%			4.50%
Total Long-Term Debt	$ 349		$ 349
4.900%, due 2026 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.90%		4.90%
Total Long-Term Debt	$ 0		$ 499
3.650%, due 2027 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	3.65%		3.65%
Total Long-Term Debt	$ 1,597		$ 1,596
4.101%, due 2028 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.101%		4.101%
Total Long-Term Debt	$ 1,244		$ 1,238
2.875%, due 2029 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	2.875%		2.875%
Total Long-Term Debt	$ 823		$ 822
5.150%, due 2029 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.15%					5.15%
Total Long-Term Debt	$ 613		$ 601
2.250%, due 2030 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	2.25%		2.25%
Total Long-Term Debt	$ 1,084		$ 1,075
4.750%, due 2030 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.75%			4.75%
Total Long-Term Debt	$ 751		$ 731
2.550%, due 2031 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	2.55%		2.55%
Total Long-Term Debt	$ 980		$ 971
4.950%, due 2031 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.95%			4.95%
Total Long-Term Debt	$ 751		$ 726
4.100%, due 2032 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.10%		4.10%
Total Long-Term Debt	$ 596		$ 596
5.500%, due 2032 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.50%		5.50%
Total Long-Term Debt	$ 656		$ 635
4.750%, due 2033 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.75%		4.75%
Total Long-Term Debt	$ 1,005		$ 973
5.375%, due 2034 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.375%					5.375%
Total Long-Term Debt	$ 1,020		$ 992
5.950%, due 2034 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.95%		5.95%
Total Long-Term Debt	$ 335		$ 335
5.200%, due 2035 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.20%			5.20%
Total Long-Term Debt	$ 1,188		$ 1,151
5.850%, due 2036 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.85%		5.85%
Total Long-Term Debt	$ 397		$ 397
6.375%, due 2037 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	6.375%		6.375%
Total Long-Term Debt	$ 365		$ 364
5.800%, due 2040 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.80%		5.80%
Total Long-Term Debt	$ 115		$ 115
4.625%, due 2042 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.625%		4.625%
Total Long-Term Debt	$ 861		$ 860
4.650%, due 2043 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.65%		4.65%
Total Long-Term Debt	$ 975		$ 975
4.650%, due 2044 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.65%		4.65%
Total Long-Term Debt	$ 768		$ 768
5.100%, due 2044 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.10%		5.10%
Total Long-Term Debt	$ 548		$ 548
4.375%, due 2047 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.375%		4.375%
Total Long-Term Debt	$ 1,389		$ 1,389
4.550%, due 2048 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.55%		4.55%
Total Long-Term Debt	$ 841		$ 840
3.700%, due 2049 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	3.70%		3.70%
Total Long-Term Debt	$ 813		$ 813
3.125%, due 2050 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	3.125%		3.125%
Total Long-Term Debt	$ 989		$ 988
3.600%, due 2051 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	3.60%		3.60%
Total Long-Term Debt	$ 1,234		$ 1,234
4.550% due 2052 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.55%		4.55%
Total Long-Term Debt	$ 690		$ 689
6.100%, due 2052 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	6.10%		6.10%
Total Long-Term Debt	$ 742		$ 742
5.125%, due 2053 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.125%		5.125%
Total Long-Term Debt	$ 1,085		$ 1,084
4.850%, due 2054 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.85%		4.85%
Total Long-Term Debt	$ 247		$ 247
5.650%, due 2054 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.65%					5.65%
Total Long-Term Debt	$ 986		985
5.700%, due 2055 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.70%			5.70%
Total Long-Term Debt	$ 1,328		1,327
5.850% due 2064 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.85%			5.85%
Total Long-Term Debt	$ 790		$ 789
9.000%, due 2027 | Surplus Notes
Debt Instrument [Line Items]
Debt instrument interest rate	9.00%		9.00%
Total Long-Term Debt	$ 25		$ 25
5.000% Senior Unsecured Notes Due 2036 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.00%	5.00%
Total Long-Term Debt	$ 985		0
4.000% Senior Unsecured Notes Due 2028 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%	4.00%
Total Long-Term Debt	$ 747		0
4.600% Senior Unsecured Notes Due 2032 | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.60%	4.60%
Total Long-Term Debt	$ 742		0
5.700% Senior Unsecured Notes Due 2055 B | Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.70%	5.70%
Total Long-Term Debt	$ 492		$ 0