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Deferred Revenue
 9 Months Ended
Sep. 30, 2023
Revenue from Contract with Customer [Abstract]  
Deferred Revenue Deferred Revenue
Deferred revenue consisted of the following:
September 30, 2023December 31, 2022
Current:
A&C$692.9 $622.1 
Core1,401.8 1,331.9 
$2,094.7 $1,954.0 
Noncurrent:
A&C$173.7 $173.1 
Core629.5 597.2 
$803.2 $770.3 
The increase in deferred revenue is primarily driven by payments received in advance of satisfying our performance obligations, offset by $438.9 million and $1,789.2 million of revenue recognized during the three and nine months ended September 30, 2023, respectively, which was included in deferred revenue as of December 31, 2022. Deferred revenue as of September 30, 2023 represents our aggregate remaining performance obligations that will be recognized as revenue over the period in which the performance obligations are expected to be satisfied, as follows:
Remainder of 2023
2024202520262027ThereafterTotal
A&C$284.1 $447.5 $96.8 $26.3 $6.8 $5.1 $866.6 
Core517.6 994.9 270.2 109.4 61.1 78.1 2,031.3 
$801.7 $1,442.4 $367.0 $135.7 $67.9 $83.2 $2,897.9