Summary of Significant Accounting Policies (Unaudited) Backlog and Contract Assets and Liabilities (Details 3) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Change in Contract with Customer, Liability [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 552	$ 431	$ 3,100	$ 3,100
Backlog, Awards, and Related Adjustments [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 109,600		$ 109,600
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation			Of our September 30, 2026 backlog, we expect to recognize approximately 35 percent as revenue over the next 12 months and 55 percent as revenue over the next 24 months, with the remainder to be recognized thereafter.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-09-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Percentage	35.00%		35.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months		12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Percentage	55.00%		55.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	24 months		24 months