Contingencies and Commitments - Joint Venture Investment Commitments (Details 4) $ in Millions	1 Months Ended
	Aug. 31, 2015 USD ($) company
COOEC Fluor Heavy Industries Co., Ltd.
Commitments
Ownership interest in joint venture (as a percent)	49.00%
COOEC Fluor Heavy Industries Co., Ltd. | Funding commitment, initial investment
Commitments
Commitment amount	$ 350
COOEC Fluor Heavy Industries Co., Ltd. | Funding commitment, additional investment
Commitments
Commitment amount	$ 140
Offshore Oil Engineering Co., Ltd. | COOEC Fluor Heavy Industries Co., Ltd.
Commitments
Ownership interest in joint venture (as a percent)	51.00%
COOEC Fluor Heavy Industries Co., Ltd.
Commitments
Number of parties to joint venture | company	2