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Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Amortized Intangible Assets The gross carrying amount and accumulated amortization for intangible assets consisted of the following (in millions):
 December 31, 2022
 Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Amortized Intangible Assets
Customer relationships$754.8 $159.4 $595.4 
Developed technology71.2 26.5 44.7 
Trade names35.8 4.4 31.4 
Acquired technology23.5 1.6 21.9 
Non-compete agreements2.9 2.7 0.2 
Patents1.9 0.7 1.2 
Total$890.1 $195.3 $694.8 
Unamortized Intangible Assets
Trade names(1)
$15.5 $— $15.5 
(1) During the first quarter of 2022, indefinite-lived trade names and developed technology with net carrying amounts of $4.2 million and $0.5 million were allocated to the disposal group classified as held for sale and subsequently impaired.

 December 31, 2021
 Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Amortized Intangible Assets
Customer relationships$541.7 $119.2 $422.5 
Developed technology74.6 20.7 53.9 
Trade names18.9 2.7 16.2 
Non-compete agreements2.9 2.5 0.4 
Patents1.5 0.6 0.9 
Total$639.6 $145.7 $493.9 
Unamortized Intangible Assets
Trade names$20.0 $— $20.0 
Schedule of Unamortized Intangible Assets The gross carrying amount and accumulated amortization for intangible assets consisted of the following (in millions):
 December 31, 2022
 Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Amortized Intangible Assets
Customer relationships$754.8 $159.4 $595.4 
Developed technology71.2 26.5 44.7 
Trade names35.8 4.4 31.4 
Acquired technology23.5 1.6 21.9 
Non-compete agreements2.9 2.7 0.2 
Patents1.9 0.7 1.2 
Total$890.1 $195.3 $694.8 
Unamortized Intangible Assets
Trade names(1)
$15.5 $— $15.5 
(1) During the first quarter of 2022, indefinite-lived trade names and developed technology with net carrying amounts of $4.2 million and $0.5 million were allocated to the disposal group classified as held for sale and subsequently impaired.

 December 31, 2021
 Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Amortized Intangible Assets
Customer relationships$541.7 $119.2 $422.5 
Developed technology74.6 20.7 53.9 
Trade names18.9 2.7 16.2 
Non-compete agreements2.9 2.5 0.4 
Patents1.5 0.6 0.9 
Total$639.6 $145.7 $493.9 
Unamortized Intangible Assets
Trade names$20.0 $— $20.0 
Schedule of Estimated Aggregate Amortization Expense for the Next Five Years
The following table shows the estimated aggregate amortization expense as of December 31, 2022 (in millions):

2023$63.5 
202463.2 
202562.4 
202662.4 
202762.4