Summary of Accounting Principles (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Notes to Consolidated Financial Statements [Abstract]
Restricted Cash And Cash Equivalents	$ 47,000,000	$ 35,000,000
Contract Receivable Retainage	173,000,000	172,000,000
Unbilled Contracts Receivable	1,495,000,000	1,363,000,000
Excess Of Replacement Or Current Costs Over Stated LIFO Value	133,000,000	139,000,000
Research and Development Arrangement, Contract to Perform for Others, Costs Incurred, Gross	2,200,000,000
Research and Development Arrangement, Contract to Perform for Others, Compensation Earned		500,000,000
Provision for Loss on Contracts	27,000,000	157,000,000
Finite-Lived Intangible Assets [Line Items]
Increase Decrease Operating Profit Due to Contract Reestimates	$ 167,000,000
Collaboration Asset [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	30 years
Service portfolios [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	30 years
Service portfolios [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	5 years
Patents and trademarks [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	40 years
Patents and trademarks [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	3 years
Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	32 years
Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	2 years
Exclusivity Assets [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	25 years
Exclusivity Assets [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life (in years)	3 years

Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Cumulative provision for contract losses not offset against related costs accumulated on the balance sheet.

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The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others.

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The amount of costs incurred under a research and development arrangement accounted for as a contract to perform research and development for others.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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The increase (decrease) of operating profit due to contract re-estimates in the period.

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