Guarantees	9 Months Ended
Sep. 30, 2021
Guarantees [Abstract]
Guarantees	GuaranteesIn the ordinary course of business, we enter into various agreements providing performance assurances and guarantees to our clients on behalf of certain unconsolidated and consolidated partnerships, joint ventures and other jointly executed contracts. These agreements are entered into primarily to support project execution commitments. Performance guarantees have various expiration dates ranging from mechanical completion to a period extending beyond contract completion. The maximum potential amount of future payments that we could be required to make under outstanding performance guarantees, which represents the remaining cost of work to be performed, was estimated to be $13 billion as of September 30, 2021. For cost reimbursable contracts, amounts that may become payable pursuant to guarantee provisions are normally recoverable from the client for work performed. For lump-sum contracts, the performance guarantee amount is the cost to complete the contracted work, less amounts remaining to be billed to the client under the contract. Remaining billable amounts could be greater or less than the cost to complete. In those cases where costs exceed the remaining amounts payable under the contract, we may have recourse to third parties, such as owners, partners, subcontractors or vendors for claims. There were no liabilities related to performance guarantees as of September 30, 2021 and December 31, 2020.

Guarantees

9 Months Ended

Sep. 30, 2021

GuaranteesIn the ordinary course of business, we enter into various agreements providing performance assurances and guarantees to our clients on behalf of certain unconsolidated and consolidated partnerships, joint ventures and other jointly executed contracts. These agreements are entered into primarily to support project execution commitments. Performance guarantees have various expiration dates ranging from mechanical completion to a period extending beyond contract completion. The maximum potential amount of future payments that we could be required to make under outstanding performance guarantees, which represents the remaining cost of work to be performed, was estimated to be $13 billion as of September 30, 2021. For cost reimbursable contracts, amounts that may become payable pursuant to guarantee provisions are normally recoverable from the client for work performed. For lump-sum contracts, the performance guarantee amount is the cost to complete the contracted work, less amounts remaining to be billed to the client under the contract. Remaining billable amounts could be greater or less than the cost to complete. In those cases where costs exceed the remaining amounts payable under the contract, we may have recourse to third parties, such as owners, partners, subcontractors or vendors for claims. There were no liabilities related to performance guarantees as of September 30, 2021 and December 31, 2020.