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Financial Instruments Energy (Details) bbl in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) bbl | Dec. 31, 2014 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative contracts, at fair value(2) | [1] | $ 1,139.0 | $ 36.0 |
Derivative contracts, at fair value(1) | [2] | 23.0 | 259.0 |
Not designated as hedging instrument | Other assets |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative contracts, at fair value(1) | [3],[4] | 19.0 | 259.0 |
Not designated as hedging instrument | Accrued expenses and other liabilities |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative contracts, at fair value(2) | [3],[5] | 1,139.0 | $ 33.0 |
Commodity contracts | Energy Segment | Not designated as hedging instrument |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative volume (barrels) | bbl |  |  | 2.5 |
Commodity contracts | Energy Segment | Not designated as hedging instrument | Other assets |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative contracts, at fair value(1) |  |  | $ 45.0 |
Commodity contracts | Energy Segment | Not designated as hedging instrument | Accrued expenses and other liabilities |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative contracts, at fair value(2) |  | (11.0) |  |
Interest rate contracts(2) |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount |  |  | 16,000.0 |
Interest rate contracts(2) | Energy Segment | Designated as hedging instrument |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount |  | 62.5 |  |
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, before Tax |  | 0.0 | (1.0) |
Other Income (Loss) [Member] | Commodity contracts | Energy Segment | Not designated as hedging instrument |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Realized (loss) gain on interest rate swaps reclassified from AOCI into interest expense |  | (19.0) | $ (36.0) | $ 187.0
Term loan | Energy Segment |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Balance of debt partially hedged |  | $ 125.0 |  |
[1] | Amounts are classified within accrued expenses and other liabilities in our consolidated balance sheets.
[2] | Amounts are classified within other assets in our consolidated balance sheets.
[3] | Excludes netting of cash collateral received and posted. The total collateral posted at December 31, 2016 and 2015 was $634 million and $883 million, respectively, across all counterparties.
[4] | Net asset derivatives are located within other assets in our consolidated balance sheets.
[5] | Net liability derivatives are located within accrued expenses and other liabilities in our consolidated balance sheets.

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313 + Details
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