KBR Separation	6 Months Ended
Jun. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]
KBR Separation	KBR Separation During 2007, we completed the separation of KBR, Inc. (KBR) from us by exchanging KBR common stock owned by us for our common stock. We entered into various agreements relating to the separation of KBR, including, among others, a Master Separation Agreement (“MSA”) and a Tax Sharing Agreement (“TSA”). We recorded a liability reflecting the estimated fair value of the indemnities provided to KBR. Since the separation, we have recorded adjustments to reflect changes to our estimation of our remaining obligation. All such adjustments are recorded in “Income (loss) from discontinued operations, net of income tax (provision) benefit.” Amounts accrued relating to our KBR liabilities were included in “Other liabilities” in our condensed consolidated balance sheets and totaled $219 million as of December 31, 2012. During the first quarter of 2013, we paid $219 million to satisfy our obligation under a guarantee related to the Barracuda-Caratinga matter, a legacy KBR project. Accordingly, there were no amounts accrued at June 30, 2013. Tax sharing agreement The TSA provides for the calculation and allocation of United States and certain other jurisdiction tax liabilities between KBR and us for the periods 2001 through the date of separation. The TSA is complex, and finalization of amounts owed between KBR and us under the TSA can occur only after income tax audits are completed by the taxing authorities and both parties have had time to analyze the results. During the second quarter of 2012, we sent a notice as required by the TSA to KBR requesting the appointment of an arbitrator in accordance with the terms of the TSA. This request asked the arbitrator to find that KBR owes us a certain amount pursuant to the TSA. KBR denied that it owes us any amount and asserted instead that we owe KBR a certain amount under the TSA. KBR also asserted that they believe the MSA controls its defenses to our TSA claim and demanded arbitration under that agreement. On July 10, 2012, we filed suit in the District Court of Harris County, Texas, seeking to compel KBR to arbitrate this dispute in accordance with the provisions of the TSA, rather than the MSA. KBR filed a cross-motion seeking to compel arbitration under the MSA. In September 2012, the court denied our motion and granted KBR's motion to compel arbitration under the MSA. We continue to believe that the TSA was intended to govern this matter and have filed a notice of appeal, which is pending. In May 2013, KBR's defenses were arbitrated before a panel appointed pursuant to the MSA. In June 2013, the panel issued its award, finding it had jurisdiction to hear the dispute and that a significant portion of our claim made under the TSA was barred by the time limitation provision in the MSA. The panel ordered the parties to return to the TSA arbitrator for determination of the parties' remaining TSA claims. While we disagree with the court's ruling and the MSA panel's findings, we are legally bound by these decisions, subject to the outcome of our notice of appeal. Due to the uncertainty surrounding the TSA arbitrator's ultimate determination of the parties' claims, we are unable to make a reasonable estimate at this time but do not expect the results of this determination, which will be reflected as discontinued operations, to have a material effect on our liquidity, consolidated results of operations, or consolidated financial condition. No anticipated recovery amounts or liabilities related to this matter have been recognized in the condensed consolidated financial statements as of June 30, 2013.

KBR Separation

6 Months Ended

Jun. 30, 2013

Discontinued Operations and Disposal Groups [Abstract]

During 2007, we completed the separation of KBR, Inc. (KBR) from us by exchanging KBR common stock owned by us for our common stock. We entered into various agreements relating to the separation of KBR, including, among others, a Master Separation Agreement (“MSA”) and a Tax Sharing Agreement (“TSA”). We recorded a liability reflecting the estimated fair value of the indemnities provided to KBR. Since the separation, we have recorded adjustments to reflect changes to our estimation of our remaining obligation. All such adjustments are recorded in “Income (loss) from discontinued operations, net of income tax (provision) benefit.” Amounts accrued relating to our KBR liabilities were included in “Other liabilities” in our condensed consolidated balance sheets and totaled $219 million as of December 31, 2012. During the first quarter of 2013, we paid $219 million to satisfy our obligation under a guarantee related to the Barracuda-Caratinga matter, a legacy KBR project. Accordingly, there were no amounts accrued at June 30, 2013.

Tax sharing agreement

The TSA provides for the calculation and allocation of United States and certain other jurisdiction tax liabilities between KBR and us for the periods 2001 through the date of separation. The TSA is complex, and finalization of amounts owed between KBR and us under the TSA can occur only after income tax audits are completed by the taxing authorities and both parties have had time to analyze the results.

During the second quarter of 2012, we sent a notice as required by the TSA to KBR requesting the appointment of an arbitrator in accordance with the terms of the TSA. This request asked the arbitrator to find that KBR owes us a certain amount pursuant to the TSA. KBR denied that it owes us any amount and asserted instead that we owe KBR a certain amount under the TSA. KBR also asserted that they believe the MSA controls its defenses to our TSA claim and demanded arbitration under that agreement. On July 10, 2012, we filed suit in the District Court of Harris County, Texas, seeking to compel KBR to arbitrate this dispute in accordance with the provisions of the TSA, rather than the MSA. KBR filed a cross-motion seeking to compel arbitration under the MSA. In September 2012, the court denied our motion and granted KBR's motion to compel arbitration under the MSA. We continue to believe that the TSA was intended to govern this matter and have filed a notice of appeal, which is pending.

In May 2013, KBR's defenses were arbitrated before a panel appointed pursuant to the MSA. In June 2013, the panel issued its award, finding it had jurisdiction to hear the dispute and that a significant portion of our claim made under the TSA was barred by the time limitation provision in the MSA. The panel ordered the parties to return to the TSA arbitrator for determination of the parties' remaining TSA claims. While we disagree with the court's ruling and the MSA panel's findings, we are legally bound by these decisions, subject to the outcome of our notice of appeal. Due to the uncertainty surrounding the TSA arbitrator's ultimate determination of the parties' claims, we are unable to make a reasonable estimate at this time but do not expect the results of this determination, which will be reflected as discontinued operations, to have a material effect on our liquidity, consolidated results of operations, or consolidated financial condition. No anticipated recovery amounts or liabilities related to this matter have been recognized in the condensed consolidated financial statements as of June 30, 2013.