Shareholders' Equity (Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (876)	$ (740)
Other comprehensive income adjustments before reclassifications	(58)	9
Amounts reclassified from accumulated other comprehensive income	12	8
Ending balance	(922)	(723)
Accumulated foreign currency translation adjustments, net of tax of $(3) and $3	(261)	(122)
Pension and post-retirement benefits, net of tax of $(230) and $(218)	(658)	(599)
Fair value of derivatives, net of tax of $0 and $0	(3)	(2)
Total accumulated other comprehensive loss	(922)	(723)
Cumulative translation adjustments, tax	(3)	3
Pension liability adjustments, tax	(230)	(218)
Unrealized gains (losses) on derivatives, tax	0	0
Accumulated foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(203)	(131)
Other comprehensive income adjustments before reclassifications	(58)	9
Amounts reclassified from accumulated other comprehensive income	0	0
Ending balance	(261)	(122)
Total accumulated other comprehensive loss	(261)	(122)
Accumulated pension liability adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(670)	(608)
Other comprehensive income adjustments before reclassifications	0	1
Amounts reclassified from accumulated other comprehensive income	12	8
Ending balance	(658)	(599)
Total accumulated other comprehensive loss	(658)	(599)
Changes in fair value of derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(3)	(1)
Other comprehensive income adjustments before reclassifications	0	(1)
Amounts reclassified from accumulated other comprehensive income	0	0
Ending balance	(3)	(2)
Total accumulated other comprehensive loss	$ (3)	$ (2)

Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax

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- Definition

Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax

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No definition available.

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- Definition

Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax

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- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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- Definition

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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