Commitments and Contingencies - Environmental, Health and Safety ("EHS") Matters (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Dec. 31, 2016 |
|
Loss Contingencies [Line Items] | |||||
Environmental expenditures capitalized | $ 4.5 | $ 6.5 | $ 11.5 | $ 12.5 | |
Recurring | Biofuels blending obligation | |||||
Loss Contingencies [Line Items] | |||||
Biofuel blending obligation, fair value | 127.0 | 127.0 | |||
Recurring | Biofuels blending obligation | Level 2 | |||||
Loss Contingencies [Line Items] | |||||
Biofuel blending obligation, fair value | 127.0 | 127.0 | $ 186.3 | ||
EHS | |||||
Loss Contingencies [Line Items] | |||||
Environmental accruals | 3.8 | 3.8 | 4.8 | ||
EHS | CRRM | |||||
Loss Contingencies [Line Items] | |||||
Cost of renewable identification numbers expense | 64.3 | $ 58.3 | 163.5 | $ 152.4 | |
Biofuel blending obligation recorded in other current liabilities | $ 185.3 | $ 185.3 | $ 186.3 |