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Amortizable Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value | $ 2,992.5 | $ 2,349.2
Accumulated amortization | (1,397.3) | (1,267.7)
Net carrying value | 1,595.2 | 1,081.5
Foreign currency translation, Gross carrying value | (4.5) |
Foreign currency translation, Accumulated amortization | 0.4 |
Foreign currency translation, Net carrying value | (4.1) |
Purchased Customer Accounts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value, excluding foreign currency translation | 2,957.7 | 2,311.6
Accumulated amortization, excluding foreign currency translation | (1,363.7) | (1,235.3)
Net carrying value, excluding foreign currency translation | $ 1,594.0 | $ 1,076.3
Weighted average life (years) | 14 years 9 months 18 days | 14 years 10 months 24 days
Non-compete Agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value, excluding foreign currency translation | $ 39.3 | $ 37.6
Accumulated amortization, excluding foreign currency translation | (34.0) | (32.4)
Net carrying value, excluding foreign currency translation | $ 5.3 | $ 5.2
Weighted average life (years) | 4 years 4 months 24 days | 4 years 6 months

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