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v3.3.1.900

Derivative Instruments, Hedging Activities and Fair Value Measurements, Recurring Fair Value Measurements (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financial liabilities [Abstract] |  |  |  |  |  |
Liquidity Option Agreement |  | $ 245.1 |  | $ 219.7 |  |
Total gains (losses) included in: |  |  |  |  |  |
Unrealized gain (loss) recognized as a component of net income related to financial assets and liabilities |  | 18.4 |  | (30.6) |  | $ (1.4)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] |  |  |  |  |  |
Financial assets [Abstract] |  |  |  |  |  |
Financial assets |  | 0.9 |  | 1.0 |  |
Financial liabilities [Abstract] |  |  |  |  |  |
Financial liabilities |  | 2.5 |  | 0.6 |  |
Reconciliation of changes in the fair value of Level 3 financial assets and liabilities [Roll Forward] |  |  |  |  |  |
Financial asset (liability) balance, net, beginning of period |  | (219.3) | [1] | 3.2 |  |
Total gains (losses) included in: |  |  |  |  |  |
Other comprehensive income (loss) |  | (19.2) |  | (2.6) |  |
Settlements |  | 0.1 |  | (3.4) |  |
Acquisition of Liquidity Option Agreement |  | 0.0 |  | (219.7) |  |
Transfers out of Level 3 | [1] | 18.0 |  | 2.3 |  |
Financial asset (liability) balance, net, end of period |  | (246.7) | [1] | (219.3) | [1] | $ 3.2
Unrealized gain (loss) recognized as a component of net income related to financial assets and liabilities |  | (0.9) |  | (2.6) |  |
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Location - Revenue [Member] |  |  |  |  |  |
Total gains (losses) included in: |  |  |  |  |  |
Net income | [2] | (0.9) |  | 0.9 |  |
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Location - Other expense, net [Member] |  |  |  |  |  |
Total gains (losses) included in: |  |  |  |  |  |
Net income |  | (25.4) |  | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] |  |  |  |  |  |
Financial assets [Abstract] |  |  |  |  |  |
Interest rate derivatives |  | 3.2 |  |  |  |
Commodity derivatives |  | 255.6 |  | 226.6 |  |
Financial assets |  | 258.8 |  |  |  |
Financial liabilities [Abstract] |  |  |  |  |  |
Liquidity Option Agreement |  | 245.1 |  | 219.7 |  |
Interest rate derivatives |  | 3.7 |  |  |  |
Commodity derivatives |  | 143.0 |  | 147.4 |  |
Financial liabilities |  | 391.8 |  | 367.1 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Level 1 [Member] |  |  |  |  |  |
Financial assets [Abstract] |  |  |  |  |  |
Interest rate derivatives |  | 0.0 |  |  |  |
Commodity derivatives |  | 109.5 |  | 37.8 |  |
Financial assets |  | 109.5 |  |  |  |
Financial liabilities [Abstract] |  |  |  |  |  |
Liquidity Option Agreement |  | 0.0 |  | 0.0 |  |
Interest rate derivatives |  | 0.0 |  |  |  |
Commodity derivatives |  | 31.3 |  | 13.8 |  |
Financial liabilities |  | 31.3 |  | 13.8 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Level 2 [Member] |  |  |  |  |  |
Financial assets [Abstract] |  |  |  |  |  |
Interest rate derivatives |  | 3.2 |  |  |  |
Commodity derivatives |  | 145.2 |  | 187.8 |  |
Financial assets |  | 148.4 |  |  |  |
Financial liabilities [Abstract] |  |  |  |  |  |
Liquidity Option Agreement |  | 0.0 |  | 0.0 |  |
Interest rate derivatives |  | 3.7 |  |  |  |
Commodity derivatives |  | 109.2 |  | 133.0 |  |
Financial liabilities |  | 112.9 |  | 133.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Level 3 [Member] |  |  |  |  |  |
Financial assets [Abstract] |  |  |  |  |  |
Interest rate derivatives |  | 0.0 |  |  |  |
Commodity derivatives |  | 0.9 |  | 1.0 |  |
Financial assets |  | 0.9 |  |  |  |
Financial liabilities [Abstract] |  |  |  |  |  |
Liquidity Option Agreement |  | 245.1 |  | 219.7 |  |
Interest rate derivatives |  | 0.0 |  |  |  |
Commodity derivatives |  | 2.5 |  | 0.6 |  |
Financial liabilities |  | $ 247.6 |  | $ 220.3 |  |
[1] | Transfers out of Level 3 into Level 2 were due to shorter remaining transaction maturities falling inside of the Level 2 range at December 31, 2015 and 2014.
[2] | There were $0.9 million and $2.6 million of unrealized losses included in these amounts for the years ended December 31, 2015 and 2014, respectively.

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