Exit and Implementation Costs (Movement in Exit and Implementation Costs) (Details) - Initiative [Member] - USD ($) $ in Millions	12 Months Ended		15 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	$ 57	$ 0
Charges	56	68
Cash paid	(79)	(11)	$ (90)
Restructuring reserve, end of period	34	57	34
Exit Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	35	0
Charges	8	35
Cash paid	(18)	0	(18)
Restructuring reserve, end of period	25	35	25
Implementation Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	22	0
Charges	48	33
Cash paid	(61)	(11)	(72)
Restructuring reserve, end of period	$ 9	$ 22	$ 9