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Revenue from Contracts With Customers - Performance obligations (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
contract
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Practical Expedient, Initial Application and Transition, Nondisclosure of Transaction Price Allocation to Remaining Performance Obligation [true false] true
Maximum  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Payment term 1 year
Aerospace & technologies  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Sales expected to be recognized on multi-year contracts in place as of the end of the period $ 2,346
Number of types of long-term sales contracts utilized | contract 2
Aerospace & technologies | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Period in which remaining performance obligations expect to be satisfied and revenue recognized 12 months
Sales expected to be recognized on multi-year contracts in place as of the end of the period $ 1,210
Aerospace & technologies | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Period in which remaining performance obligations expect to be satisfied and revenue recognized 0 months
Sales expected to be recognized on multi-year contracts in place as of the end of the period $ 1,136
Aerospace & technologies | Maximum  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Payment term 1 year