Percentage of Completion Contracts	12 Months Ended
Dec. 31, 2017
Contractors [Abstract]
Percentage of Completion Contracts	Percentage-of-Completion Contracts We account for our long-term early production facility construction contracts in Iraq under the percentage-of-completion method. Our remaining contract in Zubair is in the final warranty stage. There has been no change to our cumulative estimated loss since December 31, 2016. Our net billings in excess of costs as of December 31, 2017 were $56 million and are shown in the “Other Current Liabilities” on the accompanying Condensed Consolidated Balance Sheets. During 2016, we were break-even for our Zubair contract and cumulative estimated loss from the Iraq contracts was $532 million as of December 31, 2016. On May 26, 2016, we entered into an agreement with our customer containing the terms and conditions of the settlement on the Zubair contract. The settlement paid to us was a gross amount of $150 million, of which $62 million and $72 million was received in the second and third quarters of 2016, respectively. The settlement included variation order requests, claims for extension of time, payments of remaining contract milestones and new project completion timelines that resulted in relief from the liquidated damages provisions. We collected the remaining gross settlement of $16 million in January 2017. As of December 31, 2016, we had no claims revenue, and our percentage-of-completion project estimate included a cumulative $25 million in approved change orders and $16 million of back charges. Our net billings in excess of costs as of December 31, 2016 were $45 million and are shown in the “Other Current Liabilities” on the Consolidated Balance Sheet. The amounts associated with these contract change orders or claims are included in revenue only when they can be reliably estimated and their realization is reasonably assured. During 2015, we recognized estimated project losses of $153 million related to our long-term early production facility construction contracts in Iraq accounted for under the percentage-of-completion method. Total estimated losses on these loss projects were $532 million at December 31, 2015. As of December 31, 2015, our percentage-of-completion project estimates include $116 million of claims revenue and $28 million of back charges. During 2015, an additional $32 million of claims revenue was included in our project estimates. Our costs in excess of billings as of December 31, 2015 were $6 million and are shown in the “Other Current Assets” on our Consolidated Balance Sheets. We also had a variety of unapproved contract change orders or claims that are not included in our revenues as of December 31, 2015. The amounts associated with these contract change orders or claims are included in revenue only when they can be reliably estimated and their realization is reasonably assured.

Percentage-of-Completion Contracts

We account for our long-term early production facility construction contracts in Iraq under the percentage-of-completion method. Our remaining contract in Zubair is in the final warranty stage. There has been no change to our cumulative estimated loss since December 31, 2016. Our net billings in excess of costs as of December 31, 2017 were $56 million and are shown in the “Other Current Liabilities” on the accompanying Condensed Consolidated Balance Sheets.

During 2016, we were break-even for our Zubair contract and cumulative estimated loss from the Iraq contracts was $532 million as of December 31, 2016. On May 26, 2016, we entered into an agreement with our customer containing the terms and conditions of the settlement on the Zubair contract. The settlement paid to us was a gross amount of $150 million, of which $62 million and $72 million was received in the second and third quarters of 2016, respectively. The settlement included variation order requests, claims for extension of time, payments of remaining contract milestones and new project completion timelines that resulted in relief from the liquidated damages provisions. We collected the remaining gross settlement of $16 million in January 2017.

As of December 31, 2016, we had no claims revenue, and our percentage-of-completion project estimate included a cumulative $25 million in approved change orders and $16 million of back charges. Our net billings in excess of costs as of December 31, 2016 were $45 million and are shown in the “Other Current Liabilities” on the Consolidated Balance Sheet. The amounts associated with these contract change orders or claims are included in revenue only when they can be reliably estimated and their realization is reasonably assured.

During 2015, we recognized estimated project losses of $153 million related to our long-term early production facility construction contracts in Iraq accounted for under the percentage-of-completion method. Total estimated losses on these loss projects were $532 million at December 31, 2015. As of December 31, 2015, our percentage-of-completion project estimates include $116 million of claims revenue and $28 million of back charges. During 2015, an additional $32 million of claims revenue was included in our project estimates. Our costs in excess of billings as of December 31, 2015 were $6 million and are shown in the “Other Current Assets” on our Consolidated Balance Sheets. We also had a variety of unapproved contract change orders or claims that are not included in our revenues as of December 31, 2015. The amounts associated with these contract change orders or claims are included in revenue only when they can be reliably estimated and their realization is reasonably assured.