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Unapproved Change Orders and Claims Against Clients and Estimated Recoveries of Claims Against Suppliers and Subcontractors (Tables) | 12 Months Ended
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Dec. 31, 2019
Contractors [Abstract] |
Schedule of Unapproved Change Orders and Claims | The amounts of unapproved change orders and claims against clients and estimated recoveries of claims against suppliers and subcontractors included in determining the profit or loss on contracts are as follows:
Dollars in millions | 2019 |  | 2018
Amounts included in project estimates-at-completion at January 1, | $ | 973 |  |  | $ | 924 |
Increase, net of foreign currency effect | 12 |  |  | 53 |
Approved change orders, net of foreign currency effect | (7 | ) |  | (4 | )
Amounts included in project estimates-at-completion at December 31, | $ | 978 |  |  | $ | 973 |
Amounts recognized over time based on progress at December 31, | $ | 974 |  |  | $ | 945 |

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- Definition This element may be used to capture the disclosure pertaining to an entity's unapproved claims and change orders used in determining the profit or loss on contracts. + References No definition available. + Details
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Namespace Prefix: | kbr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
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- References No definition available. + Details
Name: | us-gaap_ContractorsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration