Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Business Segments [Abstract]
Number of reportable segments			5
Segment Gross Operating Margin [Abstract]
Revenues	$ 11,149.3	$ 9,789.8	$ 22,532.4	$ 21,042.3
Less: Operating costs and expenses	(10,367.2)	(9,009.5)	(20,787.6)	(19,476.7)
Add: Equity in income of unconsolidated affiliates	37.6	11.3	82.1	21.2
Depreciation, amortization and accretion	289.7	261.3	566.5	515.9
Non-cash asset impairment charges	27.1	9.1	38.1	14.5
Losses (gains) attributable to asset sales and insurance recoveries	5.7	(29.0)	(58.2)	(31.5)
Total segment gross operating margin	1,142.2	1,033.0	2,373.3	2,085.7
Reconciliation of total Segment Gross Operating Margin [Abstract]
Total segment gross operating margin	1,142.2	1,033.0	2,373.3	2,085.7
Amounts included in operating costs and expenses [Abstract]
Depreciation, amortization and accretion	(289.7)	(261.3)	(566.5)	(515.9)
Non-cash asset impairment charges	(27.1)	(9.1)	(38.1)	(14.5)
Gains (losses) attributable to asset sales and insurance recoveries	(5.7)	29.0	58.2	31.5
General and administrative costs	(45.5)	(42.5)	(95.0)	(88.8)
Operating income	774.2	749.1	1,731.9	1,498.0
Other expense, net	(200.5)	(173.4)	(396.5)	(301.2)
Income before income taxes	$ 573.7	$ 575.7	$ 1,335.4	$ 1,196.8

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The amount of expense recognized and charged to operating costs and expenses in the current period that reflects the allocation of the cost of assets over the assets' useful lives.

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The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss) recorded in operating costs and expenses.

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No definition available.

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Operating income before: (i) depreciation, amortization and accretion expense; (ii) non-cash consolidated asset impairment charges; (iii) operating lease expenses for which we do not have the payment obligation; (iv) gains and losses from asset sales and related transactions and (v) general and administrative costs.

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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- Definition

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The net result for the period of deducting operating expenses from operating revenues.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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