Income Taxes	3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Disclosure	Income Taxes The effective tax rate was approximately 27% for the three months ended March 31, 2015. The effective tax rate for the three months ended March 31, 2014 is not meaningful due to the low income before income taxes, the recognition of a valuation allowance on the losses recognized on our Canadian pipe fabrication and module assembly projects and other discrete items. Our estimated annual rate for 2015 is 25%, which is lower than the U.S. statutory rate of 35% due to lower tax rates on foreign earnings and noncontrolling interests of approximately 6% and 8%, respectively, offset by an increase in the estimated annual rate due to withholding tax obligations for which we do not expect to recognize an offsetting foreign tax credit in 2015. Our estimated annual effective rate is subject to change based on changes in the actual jurisdictions where our 2015 earnings are generated. The valuation allowance for deferred tax assets as of March 31, 2015 and December 31, 2014 was $539 million and $538 million, respectively. The change in the valuation allowance was $1 million and $22 million in the three months ended March 31, 2015 and 2014. The valuation allowance is primarily related to U.S. federal, foreign and state net operating loss carryforwards, foreign tax credit carryforwards and other deferred tax assets that, in the judgment of management, are not more-likely-than-not to be realized. In assessing the probability that our deferred tax assets will be realized, management considers whether it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carryback and carryforward periods), projected future taxable income and tax-planning strategies in making this assessment. Based upon the significant level of historical taxable U.S. losses, management believes that it is not more-likely-than-not that we would be able to realize the benefits of the deductible differences and accordingly recognized additional valuation allowances as of March 31, 2015. We continue to monitor our forecast of taxable income and the evaluation of our deferred tax assets; however, sufficient taxable earning history is not yet available. In December 2014, we implemented a foreign cash repatriation strategy that provides us, if necessary, the ability to repatriate an additional $370 million of international cash without recognizing additional tax expense. In determining our foreign cash repatriation strategy and in determining whether earnings would continue to be considered permanently invested, we considered our future U.S. and non-U.S. cash needs such as 1) our anticipated foreign working capital requirements, including funding of our U.K. pension plan; 2) the expected growth opportunities across all geographical markets and 3) our plans to invest in strategic growth opportunities that may include acquisitions around the world. The remaining international cash balances associated with past foreign earnings which we currently intend to permanently reinvest in our foreign entities are not available for domestic use. We have not recognized a deferred tax liability of approximately $324 million for undistributed earnings of approximately $1 billion, which we continue to consider to be permanently reinvested in the foreseeable future. These undistributed earnings could be subject to additional tax if remitted, or deemed remitted, as a dividend. The reserve for uncertain tax positions as of March 31, 2015 and December 31, 2014 was $227 million and $228 million, respectively. The net change in the uncertain tax position for the three months ended March 31, 2015 and 2014 was $1million and $3 million, respectively.

Income Taxes

The effective tax rate was approximately 27% for the three months ended March 31, 2015. The effective tax rate for the three months ended March 31, 2014 is not meaningful due to the low income before income taxes, the recognition of a valuation allowance on the losses recognized on our Canadian pipe fabrication and module assembly projects and other discrete items.

Our estimated annual rate for 2015 is 25%, which is lower than the U.S. statutory rate of 35% due to lower tax rates on foreign earnings and noncontrolling interests of approximately 6% and 8%, respectively, offset by an increase in the estimated annual rate due to withholding tax obligations for which we do not expect to recognize an offsetting foreign tax credit in 2015. Our estimated annual effective rate is subject to change based on changes in the actual jurisdictions where our 2015 earnings are generated.

The valuation allowance for deferred tax assets as of March 31, 2015 and December 31, 2014 was $539 million and $538 million, respectively. The change in the valuation allowance was $1 million and $22 million in the three months ended March 31, 2015 and 2014. The valuation allowance is primarily related to U.S. federal, foreign and state net operating loss carryforwards, foreign tax credit carryforwards and other deferred tax assets that, in the judgment of management, are not more-likely-than-not to be realized. In assessing the probability that our deferred tax assets will be realized, management considers whether it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carryback and carryforward periods), projected future taxable income and tax-planning strategies in making this assessment. Based upon the significant level of historical taxable U.S. losses, management believes that it is not more-likely-than-not that we would be able to realize the benefits of the deductible differences and accordingly recognized additional valuation allowances as of March 31, 2015. We continue to monitor our forecast of taxable income and the evaluation of our deferred tax assets; however, sufficient taxable earning history is not yet available.

In December 2014, we implemented a foreign cash repatriation strategy that provides us, if necessary, the ability to repatriate an additional $370 million of international cash without recognizing additional tax expense. In determining our foreign cash repatriation strategy and in determining whether earnings would continue to be considered permanently invested, we considered our future U.S. and non-U.S. cash needs such as 1) our anticipated foreign working capital requirements, including funding of our U.K. pension plan; 2) the expected growth opportunities across all geographical markets and 3) our plans to invest in strategic growth opportunities that may include acquisitions around the world. The remaining international cash balances associated with past foreign earnings which we currently intend to permanently reinvest in our foreign entities are not available for domestic use. We have not recognized a deferred tax liability of approximately $324 million for undistributed earnings of approximately $1 billion, which we continue to consider to be permanently reinvested in the foreseeable future. These undistributed earnings could be subject to additional tax if remitted, or deemed remitted, as a dividend.

The reserve for uncertain tax positions as of March 31, 2015 and December 31, 2014 was $227 million and $228 million, respectively. The net change in the uncertain tax position for the three months ended March 31, 2015 and 2014 was $1million and $3 million, respectively.