Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment
Total property, plant, and equipment	$ 5,406	$ 3,529
Accumulated depreciation	(1,774)	(1,508)
Property, plant and equipment, net	3,632	2,021
Depreciation	284	271	$ 257
Facilities and equipment
Property, Plant and Equipment
Total property, plant, and equipment	$ 2,877	1,972
Facilities and equipment | Minimum
Property, Plant and Equipment
Depreciable lives (in years)	1 year
Facilities and equipment | Maximum
Property, Plant and Equipment
Depreciable lives (in years)	40 years
Land and improvements
Property, Plant and Equipment
Total property, plant, and equipment	$ 272	255
Software
Property, Plant and Equipment
Total property, plant, and equipment	$ 728	582
Depreciable lives (in years)	5 years
Hardware and office equipment and furnishings
Property, Plant and Equipment
Total property, plant, and equipment	$ 333	278
Hardware and office equipment and furnishings | Minimum
Property, Plant and Equipment
Depreciable lives (in years)	2 years
Hardware and office equipment and furnishings | Maximum
Property, Plant and Equipment
Depreciable lives (in years)	10 years
Construction in progress
Property, Plant and Equipment
Total property, plant, and equipment	$ 1,196	$ 442