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v3.19.1

Goodwill and Identifiable Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 02, 2018 | Mar. 31, 2019 | Dec. 31, 2018
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | $ 501.0 | $ 483.5
Accumulated Amortization |  | 269.7 | 257.0
Net Carrying Amount |  | 231.3 | 226.5
Intangible assets not subject to amortization: |  |  |
Trademarks, Carrying Amount |  | 262.1 | 262.2
Intangible Assets, Gross (Excluding Goodwill) |  | 763.1 | 745.7
Intangible Assets, Net (Excluding Goodwill) |  | 493.4 | 488.7
Customer and Contractual Relationships |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 12 years 9 months |  |
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | 362.4 | 346.9
Accumulated Amortization |  | 153.8 | 145.4
Net Carrying Amount |  | $ 208.6 | 201.5
Customer and Contractual Relationships | Minimum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 2 months |
Customer and Contractual Relationships | Maximum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 12 years 9 months |
Contractor Relations |  |  |
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | $ 71.1 | 71.1
Accumulated Amortization |  | 69.0 | 67.1
Net Carrying Amount |  | $ 2.1 | 4.0
Contractor Relations | Minimum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 2 years |
Contractor Relations | Maximum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 5 years |
Backlog |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years 9 months |  |
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | $ 25.0 | 23.1
Accumulated Amortization |  | 19.2 | 17.7
Net Carrying Amount |  | $ 5.8 | 5.4
Backlog | Minimum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 1 year |
Backlog | Maximum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 2 years 9 months |
Noncompete Agreements |  |  |
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | $ 23.6 | 22.1
Accumulated Amortization |  | 10.9 | 9.9
Net Carrying Amount |  | $ 12.7 | 12.2
Noncompete Agreements | Minimum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 4 years | 2 years |
Noncompete Agreements | Maximum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 7 years | 7 years |
In-use software |  |  |
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | $ 18.9 | 18.9
Accumulated Amortization |  | 16.8 | 16.0
Net Carrying Amount |  | $ 2.1 | 2.9
In-use software | Minimum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 6 years |
Favorable Contracts |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |  |
Intangible assets subject to amortization: |  |  |
Gross Carrying Amount |  | $ 0.0 | 1.4
Accumulated Amortization |  | 0.0 | 0.9
Net Carrying Amount |  | $ 0.0 | $ 0.5
Favorable Contracts | Minimum [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 5 years |

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