Debt Obligations (Changes in Debt Obligations) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Short-term debt:
Short-term debt - beginning balance	$ 431
Additions	374
Payments, Foreign Currency Translation and Accretion	(536)
Short-term debt - ending balance	269
Long-term debt - senior unsecured notes:
Additions	(3)
Payments, Foreign Currency Translation and Accretion	(78)
Total long-term debt	8,492	$ 8,573
Changes In Debt Obligations [Abstract]
Total debt obligations at beginning of period	9,004
Additions	371
Total debt obligations	(614)
Total debt obligations at ending of period	8,761
Commercial paper
Short-term debt:
Short-term debt - beginning balance	0
Additions	374
Payments, Foreign Currency Translation and Accretion	(105)
2026 Notes | Senior notes
Short-term debt:
Short-term debt - beginning balance	431
Additions	0
Payments, Foreign Currency Translation and Accretion	(431)
Short-term debt - ending balance	0
2028 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	793
Additions	0
Payments, Foreign Currency Translation and Accretion	1
Long-term debt obligations at end of period	794
2029 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	702
Additions	0
Payments, Foreign Currency Translation and Accretion	(19)
Long-term debt obligations at end of period	683
2030 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	702
Additions	0
Payments, Foreign Currency Translation and Accretion	(19)
Long-term debt obligations at end of period	683
2031 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	646
Additions	0
Payments, Foreign Currency Translation and Accretion	1
Long-term debt obligations at end of period	647
2032 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	874
Additions	0
Payments, Foreign Currency Translation and Accretion	(24)
Long-term debt obligations at end of period	850
2033 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	719
Additions	0
Payments, Foreign Currency Translation and Accretion	(20)
Long-term debt obligations at end of period	699
2034 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	1,122
Additions	0
Payments, Foreign Currency Translation and Accretion	1
Long-term debt obligations at end of period	1,123
2040 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	645
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	645
2050 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	488
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	488
2052 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	407
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	407
2053 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	739
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	739
2063 Notes | Senior notes
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	738
Additions	0
Payments, Foreign Currency Translation and Accretion	0
Long-term debt obligations at end of period	738
2026 Revolving Credit Facility | Revolving credit facility
Long-term debt - senior unsecured notes:
Long-term debt obligations at beginning of period	2
Additions	(3)
Payments, Foreign Currency Translation and Accretion	1
Long-term debt obligations at end of period	$ 4