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Remaining performance obligations - Narrative (Details)
$ in Billions
Dec. 31, 2021
USD ($)
Revenue from Contract with Customer [Abstract]  
Remaining performance obligation $ 0.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, percent to be recognized as revenue 34.00%
Period over which remaining performance obligations are expected to be recognized as revenue 1 year