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Deferred Revenue And Remaining Performance Obligations
9 Months Ended
Sep. 30, 2022
Revenue Recognition and Deferred Revenue [Abstract]  
Deferred Revenue And Remaining Performance Obligations DEFERRED REVENUE AND REMAINING PERFORMANCE OBLIGATIONS
Deferred Revenue
Changes in our deferred revenue during the third quarter and first three quarters of 2022 and 2021 were as follows: 
  Third Quarter ofFirst Three Quarters of
(In millions) 2022202120222021
Beginning balance of the period$685.2 $606.1 $631.8 $613.8 
Revenue recognized from prior year-end(92.0)(92.3)(453.8)(471.8)
Billings net of revenue recognized from current year43.6 75.2 458.8 447.0 
Ending balance of the period$636.8 $589.0 $636.8 $589.0 
Remaining Performance Obligations
At the end of the third quarter of 2022, approximately $1.5 billion of revenue is expected to be recognized from remaining performance obligations for which goods or services have not been delivered, primarily subscription, software, and software maintenance, and to a lesser extent, hardware and professional services contracts. We expect to recognize $1.1 billion or 72% of our remaining performance obligations as revenue during the next 12 months and the remainder thereafter.