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Revenue - Contract Balances (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Accounts Receivable    
Accounts Receivables - Opening $ 872.1 $ 906.4
Accounts Receivables - Closing 838.6 859.8
Increase (decrease) (33.5) (46.6)
Current portion of deferred revenues    
Current portion of deferred revenues - Opening 947.5 1,030.4
Current portion of deferred revenues - Closing 1,040.1 1,080.6
Increase (decrease) 92.6 50.2
Non-current portion of deferred revenues    
Non-current portion of deferred revenues - Opening 38.5 54.2
Non-current portion of deferred revenues - Closing 38.0 54.7
Increase (decrease) (0.5) 0.5
Revenue recognized that was deferred at the beginning of the period $ 457.8 $ 354.0