Commitments and Contingencies (Unaudited)	9 Months Ended
Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Guarantees of Subsidiary Performance Obligations From time to time in the ordinary course of business, the company guarantees obligations of its subsidiaries under certain contracts. Generally, the company is liable under such an arrangement only if its subsidiary is unable to perform under its contract. Historically, the company has not incurred any substantial liabilities resulting from these guarantees. In addition, the company’s subsidiaries may enter into joint ventures, teaming and other business arrangements (collectively, Business Arrangements) to support our products and services in domestic and international markets. The company generally strives to limit its exposure under these arrangements to its subsidiary’s investment in the Business Arrangements or to the extent of such subsidiary’s obligations under the applicable contract. In some cases, however, we may be required to guarantee performance by the Business Arrangements and, in such cases, the company generally strives to obtain cross-indemnification from the other members of the Business Arrangements. At September 30, 2015, the company is not aware of any existing event of default that would require it to satisfy any of these guarantees. U.S. Government Cost Claims From time to time, the company is advised of claims by the U.S. Government concerning certain potential disallowed costs, plus, at times, penalties and interest. When such findings are presented, the company and the U.S. Government representatives engage in discussions to enable the company to evaluate the merits of these claims, as well as to assess the amounts being claimed. Where appropriate, provisions are made to reflect the company’s estimated exposure for matters raised by the U.S. Government. Such provisions are reviewed periodically using the most recent information available. The company believes it has adequately reserved for disputed amounts that are probable and estimable, and the outcome of any such matters would not have a material adverse effect on its unaudited condensed consolidated financial position as of September 30, 2015, or its annual results of operations and/or cash flows. Environmental Matters The estimated cost to complete remediation at certain current or formerly owned or leased sites has been accrued where the company believes, based on the facts and circumstances known to the company, it is probable we will incur costs to address environmental impacts and the costs are reasonably estimable. As of September 30, 2015, management estimates the range of reasonably possible future costs for environmental remediation is between $351 million and $794 million, before considering the amount recoverable through overhead charges on U.S. Government contracts. At September 30, 2015, the amount within that range accrued for probable environmental remediation costs was $368 million, of which $111 million is recorded in other current liabilities and $257 million is recorded in other non-current liabilities. A portion of the environmental remediation costs is expected to be recoverable through overhead charges on U.S. Government contracts and, accordingly, such amounts are deferred in inventoried costs and other non-current assets. As of September 30, 2015, $58 million is deferred in inventoried costs and $129 million is deferred in other non-current assets. These amounts are evaluated for recoverability on a routine basis. Although management cannot predict whether new information gained as our environmental remediation projects progress, or as changes in facts and circumstances occur, will materially affect the estimated liability accrued, we do not anticipate future remediation expenditures associated with our currently identified projects will have a material adverse effect on the company's unaudited condensed consolidated financial position as of September 30, 2015, or its annual results of operations and/or cash flows. Financial Arrangements In the ordinary course of business, the company uses standby letters of credit and guarantees issued by commercial banks and surety bonds issued principally by insurance companies to guarantee the performance on certain obligations. At September 30, 2015, there were $236 million of stand-by letters of credit and guarantees and $152 million of surety bonds outstanding. Indemnifications The company has retained certain environmental, income tax and other potential liabilities in connection with certain of its divestitures. The settlement of these liabilities is not expected to have a material adverse effect on the company’s unaudited condensed consolidated financial position as of September 30, 2015, or its annual results of operations and/or cash flows. Operating Leases Rental expense for operating leases for the three and nine months ended September 30, 2015, was $75 million and $232 million, respectively, and was $84 million and $229 million for the three and nine months ended September 30, 2014, respectively. These amounts are net of immaterial amounts of sublease rental income. Credit Facility In July 2015, the company amended its $1.8 billion five-year credit facility dated August 29, 2013 by reducing the aggregate principal amount available under the facility to $1.6 billion and extending the maturity to July 2020 (2015 Credit Agreement). The 2015 Credit Agreement contains generally customary terms and conditions, including covenants restricting the company's ability to sell all or substantially all of its assets, merge or consolidate with another entity or undertake other fundamental changes and incur liens. The company also generally cannot permit the ratio of its debt to capitalization (as set forth in the 2015 Credit Agreement) to exceed 65 percent.

COMMITMENTS AND CONTINGENCIES

Guarantees of Subsidiary Performance Obligations

From time to time in the ordinary course of business, the company guarantees obligations of its subsidiaries under certain contracts. Generally, the company is liable under such an arrangement only if its subsidiary is unable to perform under its contract. Historically, the company has not incurred any substantial liabilities resulting from these guarantees.

In addition, the company’s subsidiaries may enter into joint ventures, teaming and other business arrangements (collectively, Business Arrangements) to support our products and services in domestic and international markets. The company generally strives to limit its exposure under these arrangements to its subsidiary’s investment in the Business Arrangements or to the extent of such subsidiary’s obligations under the applicable contract. In some cases, however, we may be required to guarantee performance by the Business Arrangements and, in such cases, the company generally strives to obtain cross-indemnification from the other members of the Business Arrangements.

At September 30, 2015, the company is not aware of any existing event of default that would require it to satisfy any of these guarantees.

U.S. Government Cost Claims

From time to time, the company is advised of claims by the U.S. Government concerning certain potential disallowed costs, plus, at times, penalties and interest. When such findings are presented, the company and the U.S. Government representatives engage in discussions to enable the company to evaluate the merits of these claims, as well as to assess the amounts being claimed. Where appropriate, provisions are made to reflect the company’s estimated exposure for matters raised by the U.S. Government. Such provisions are reviewed periodically using the most recent information available. The company believes it has adequately reserved for disputed amounts that are probable and estimable, and the outcome of any such matters would not have a material adverse effect on its unaudited condensed consolidated financial position as of September 30, 2015, or its annual results of operations and/or cash flows.

Environmental Matters

The estimated cost to complete remediation at certain current or formerly owned or leased sites has been accrued where the company believes, based on the facts and circumstances known to the company, it is probable we will incur costs to address environmental impacts and the costs are reasonably estimable. As of September 30, 2015, management estimates the range of reasonably possible future costs for environmental remediation is between $351 million and $794 million, before considering the amount recoverable through overhead charges on U.S. Government contracts. At September 30, 2015, the amount within that range accrued for probable environmental remediation costs was $368 million, of which $111 million is recorded in other current liabilities and $257 million is recorded in other non-current liabilities. A portion of the environmental remediation costs is expected to be recoverable through overhead charges on U.S. Government contracts and, accordingly, such amounts are deferred in inventoried costs and other non-current assets. As of September 30, 2015, $58 million is deferred in inventoried costs and $129 million is deferred in other non-current assets. These amounts are evaluated for recoverability on a routine basis. Although management cannot predict whether new information gained as our environmental remediation projects progress, or as changes in facts and circumstances occur, will materially affect the estimated liability accrued, we do not anticipate future remediation expenditures associated with our currently identified projects will have a material adverse effect on the company's unaudited condensed consolidated financial position as of September 30, 2015, or its annual results of operations and/or cash flows.

Financial Arrangements

In the ordinary course of business, the company uses standby letters of credit and guarantees issued by commercial banks and surety bonds issued principally by insurance companies to guarantee the performance on certain obligations. At September 30, 2015, there were $236 million of stand-by letters of credit and guarantees and $152 million of surety bonds outstanding.

Indemnifications

The company has retained certain environmental, income tax and other potential liabilities in connection with certain of its divestitures. The settlement of these liabilities is not expected to have a material adverse effect on the company’s unaudited condensed consolidated financial position as of September 30, 2015, or its annual results of operations and/or cash flows.

Operating Leases

Rental expense for operating leases for the three and nine months ended September 30, 2015, was $75 million and $232 million, respectively, and was $84 million and $229 million for the three and nine months ended September 30, 2014, respectively. These amounts are net of immaterial amounts of sublease rental income.

Credit Facility

In July 2015, the company amended its $1.8 billion five-year credit facility dated August 29, 2013 by reducing the aggregate principal amount available under the facility to $1.6 billion and extending the maturity to July 2020 (2015 Credit Agreement).

The 2015 Credit Agreement contains generally customary terms and conditions, including covenants restricting the company's ability to sell all or substantially all of its assets, merge or consolidate with another entity or undertake other fundamental changes and incur liens. The company also generally cannot permit the ratio of its debt to capitalization (as set forth in the 2015 Credit Agreement) to exceed 65 percent.