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v3.3.1.900

Derivative Instruments, Hedging Activities and Fair Value Measurements, Liability Balance Sheet Offsetting (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Interest rate derivatives [Member] |  |
Offsetting Liabilities [Line Items] |  |
Gross Amounts of Recognized Liabilities | $ 3.7 |
Gross Amounts Offset in the Balance Sheet | 0.0 |
Amounts of Liabilities Presented in the Balance Sheet | 3.7 |
Financial Instruments | (3.2) |
Cash Collateral Paid | 0.0 |
Amounts That Would Have Been Presented On Net Basis | 0.5 |
Commodity derivatives [Member] |  |
Offsetting Liabilities [Line Items] |  |
Gross Amounts of Recognized Liabilities | 143.0 | $ 147.4
Gross Amounts Offset in the Balance Sheet | 0.0 | 0.0
Amounts of Liabilities Presented in the Balance Sheet | 143.0 | 147.4
Financial Instruments | (143.0) | (147.3)
Cash Collateral Paid | 0.0 | 0.0
Amounts That Would Have Been Presented On Net Basis | $ 0.0 | $ 0.1

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