Accounting Policies - Remaining Performance Obligations (Details) $ in Billions	Dec. 31, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 4.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | 12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected period of satisfaction	12 months
Expected period of satisfaction, percentage	60.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | 24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected period of satisfaction	24 months
Expected period of satisfaction, percentage	85.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | After 24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected period of satisfaction, percentage