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Acquisitions and Divestitures - 2015 Narrative (Details) $ in Millions |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 01, 2016 USD ($) | Dec. 31, 2015 USD ($) acquisition | Dec. 31, 2016 USD ($) | Sep. 01, 2015 USD ($) | Dec. 31, 2014 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Total current assets held for sale |  | $ 5.5 | $ 0.0 |  |
Total non-current assets held for sale |  | 36.5 | 0.0 |  |
Goodwill |  | 675.8 | 835.8 |  | $ 653.3
Total current liabilities held for sale |  | 5.6 | 0.0 |  |
Total non-current liabilities held for sale |  | 5.0 | 0.0 |  |
2015 Acquisitions |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | 39.4 |  |  |
Purchase price |  | 102.3 |  |  |
Goodwill anticipated to be deductible for tax purposes |  | 1.7 |  |  |
Identifiable intangible assets |  | 25.9 |  |  |
2015 Acquisitions | Trademark/Trade name rights |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Identifiable intangible assets |  | 0.9 |  |  |
2015 Acquisitions | Customer relationships |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Identifiable intangible assets |  | $ 18.1 |  |  |
Weighted average amortizable lives of identifiable intangible assets |  | 5 years 3 months 6 days |  |  |
2015 Acquisitions | Supplier agreements |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Identifiable intangible assets |  | $ 4.8 |  |  |
Weighted average amortizable lives of identifiable intangible assets |  | 6 years 2 months 4 days |  |  |
2015 Acquisitions | Other |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Identifiable intangible assets |  | $ 2.1 |  |  |
Weighted average amortizable lives of identifiable intangible assets |  | 3 years 4 months 8 days |  |  |
Land segment |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 430.7 | 496.7 |  | 405.9
Land segment | 2015 Acquisitions |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of business acquired | acquisition |  | 3 |  |  |
Aviation segment |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 173.7 | $ 266.8 |  | $ 174.3
Aviation segment | 2015 Acquisitions |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of business acquired | acquisition |  | 1 |  |  |
Pester | Discontinued Operations, Held-for-sale |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total current assets held for sale |  | $ 5.5 |  |  |
Total non-current assets held for sale |  | 36.5 |  |  |
Goodwill | $ 2.9 |  |  | $ 5.9 |
Total current liabilities held for sale |  | 5.6 |  |  |
Total non-current liabilities held for sale |  | $ 5.0 |  |  |
Pester | Discontinued Operations, Disposed of by Sale |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash received for disposal of retail business | 32.3 |  |  |  |
Pester | Discontinued Operations, Disposed of by Sale | Other income |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Gain (loss) on disposal of retail business | $ 3.8 |  |  |  |

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