Business Combinations (Details)
$ in Millions |
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1 Months Ended |
3 Months Ended |
12 Months Ended |
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Jun. 01, 2015
USD ($)
item
location
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Jan. 14, 2015
USD ($)
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Jan. 07, 2015
USD ($)
store
item
location
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Jun. 30, 2015
shares
|
Jan. 31, 2015
USD ($)
|
Dec. 31, 2014
shares
|
Dec. 31, 2015
USD ($)
|
Sep. 30, 2015
USD ($)
|
Jun. 30, 2015
USD ($)
|
Mar. 31, 2015
USD ($)
|
Dec. 31, 2016
item
|
Dec. 31, 2015
USD ($)
shares
|
Dec. 31, 2014
USD ($)
shares
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| Acquisitions |
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| Number of convenience stores | item |
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248
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| Number of owned, leased and/or supplied gasoline stations | item |
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1,458
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| Number of common units sold | shares |
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|
3,000,000
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3,565,000
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|
3,000,000
|
3,565,000
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| Acquisition related costs |
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| Restructuring Charges |
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$ 2.3
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| Warren Equities Inc |
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| Acquisitions |
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| Percentage of outstanding membership interests acquired |
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100.00%
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| Number of convenience stores | store |
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147
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| Number of commissioned agented locations acquired | location |
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53
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| Number of dealers with fuel supply rights acquired | item |
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330
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| Purchase price |
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$ 381.8
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| Number of common units sold | shares |
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3,565,000
|
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| Acquisition related costs |
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| Acquisition related costs incurred |
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$ 1.0
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$ 4.4
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| Warren Equities Inc | Selling, general and administrative expenses |
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| Acquisition related costs |
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| Acquisition related costs incurred |
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$ 5.4
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$ 1.7
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| Restructuring Charges |
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$ 2.3
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| Revere terminal |
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| Acquisitions |
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| Purchase price |
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$ 23.7
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| Liability for contingent consideration |
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$ 0.0
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| Contingent consideration period |
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8 years
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| Capitol Petroleum Group |
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| Acquisitions |
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| Number of dealers with fuel supply rights acquired | item |
7
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| Number of owned, leased and/or supplied gasoline stations | location |
97
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| Purchase price |
$ 155.7
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| Acquisition related costs |
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| Acquisition related costs incurred |
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$ 0.3
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$ 0.1
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$ 3.1
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| Capitol Petroleum Group | Selling, general and administrative expenses |
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| Acquisition related costs |
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| Acquisition related costs incurred |
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$ 3.5
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