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Acquisitions and Divestitures - 2014 Narrative (Details) location in Thousands, £ in Millions, $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 29, 2014 USD ($) location | Mar. 07, 2014 GBP (£) | Mar. 07, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 GBP (£) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) acquisition | Dec. 31, 2015 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Escrow payment related to an assumed obligation of an acquired business |  |  |  | $ 0.0 |  | $ 0.0 | $ 21.7 |
Goodwill |  |  |  | 835.8 |  |  | 653.3 | $ 675.8
Aviation segment |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  |  | 266.8 |  |  | 174.3 | 173.7
Marine segment |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  |  | $ 72.3 |  |  | 73.1 | 71.4
Watson Petroleum |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price |  |  | $ 164.3 |  |  |  |  |
Escrow payment related to an assumed obligation of an acquired business |  | £ 13.0 | $ 21.7 |  |  |  |  |
Amounts due to sellers |  |  |  |  | £ 3.4 |  |  | $ 5.1
Additional estimated amounts due to seller |  |  |  |  | £ 2.1 | $ 3.0 |  |
Colt |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price | $ 72.9 |  |  |  |  |  |  |
Number of locations (more than) | location | 3 |  |  |  |  |  |  |
2014 Acquisitions |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  | 295.8 |
Goodwill |  |  |  |  |  |  | 177.8 |
Goodwill anticipated to be deductible for tax purposes |  |  |  |  |  |  | 22.4 |
Identifiable intangible assets |  |  |  |  |  |  | 83.5 |
2014 Acquisitions | Trademark/Trade name rights |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets |  |  |  |  |  |  | 11.5 |
2014 Acquisitions | Customer relationships |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets |  |  |  |  |  |  | $ 55.5 |
Weighted average amortizable lives of identifiable intangible assets |  |  |  |  |  |  | 4 years 10 months 8 days |
2014 Acquisitions | Other |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Identifiable intangible assets |  |  |  |  |  |  | $ 16.5 |
Weighted average amortizable lives of identifiable intangible assets |  |  |  |  |  |  | 5 years |
2014 Acquisitions | Aviation segment |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Number of acquisitions | acquisition |  |  |  |  |  |  | 2 |
2014 Acquisitions | Marine segment |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Number of acquisitions | acquisition |  |  |  |  |  |  | 1 |

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