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Intangible Assets, Net (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Intangible assets subject to amortization: |  |  |
Intangible assets subject to amortization, Gross Carrying Amount | $ 783.8 |  | $ 748.9
Intangible assets subject to amortization, Accumulated Amortization | (556.6) |  | (536.0)
Intangible assets |  |  |
Intangible assets, Gross Carrying Amount | 1,592.8 |  | 1,517.1
Amortization expense for intangible assets | 21.1 | $ 23.0 |
Changes in intangible assets due to foreign currency translation gains (losses) | (1.4) | $ 1.2 |
Summary of estimated aggregate amortization expense for each of the succeeding five years and thereafter |  |  |
2024 (remaining six months) | 21.4 |  |
2025 | 38.9 |  |
2026 | 29.5 |  |
2027 | 28.8 |  |
2028 | 27.3 |  |
Thereafter | 81.3 |  |
Total | 227.2 |  |
2024 Acquisitions |  |  |
Intangible assets |  |  |
Intangible assets recorded in connection with acquisition | 75.4 |  |
Intangible assets not subject to amortization | 38.9 |  |
Trade names |  |  |
Intangible assets not subject to amortization: |  |  |
Intangible assets not subject to amortization, Gross Carrying Amount | 809.0 |  | 768.2
Trade names | 2024 Acquisitions |  |  |
Intangible assets |  |  |
Intangible assets not subject to amortization | $ 38.9 |  |
Covenants not to compete | 2024 Acquisitions |  |  |
Intangible assets |  |  |
Weighted average lives of identifiable intangible assets | 5 years |  |
Customer lists/relationships |  |  |
Intangible assets subject to amortization: |  |  |
Weighted average amortizable life in years | 14 years |  |
Intangible assets subject to amortization, Gross Carrying Amount | $ 751.5 |  | 716.0
Intangible assets subject to amortization, Accumulated Amortization | $ (539.9) |  | (520.5)
Backlog of orders |  |  |
Intangible assets subject to amortization: |  |  |
Weighted average amortizable life in years | 7 years 10 months 24 days |  |
Intangible assets subject to amortization, Gross Carrying Amount | $ 22.1 |  | 22.9
Intangible assets subject to amortization, Accumulated Amortization | $ (7.2) |  | (6.0)
Other |  |  |
Intangible assets subject to amortization: |  |  |
Weighted average amortizable life in years | 9 years 3 months 18 days |  |
Intangible assets subject to amortization, Gross Carrying Amount | $ 10.2 |  | 10.0
Intangible assets subject to amortization, Accumulated Amortization | $ (9.5) |  | $ (9.5)

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- Definition Definition: Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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