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Revenue, Remaining performance obligations (Details)
$ in Millions
Mar. 31, 2025
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Amount $ 36,777
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Amount $ 5,910
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year 2025
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Amount $ 6,938
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year 2026
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Amount $ 5,716
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year 2027
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 2 years 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Amount $ 18,213
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 3 years 9 months