CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - Unaudited - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings (loss) from Cont Ops	$ 56	$ (53)
Net earnings (loss) from Disc Ops	0	(1)
Net earnings (loss)	56	(54)
OCI, net of tax:
Foreign currency translation adjustment	29	3
Ownership share of equity method investees’ OCI	1	(2)
DB plan adjustments	1	2
Unrealized gain (loss) on hedges	(2)	(3)
Total OCI, net of tax	29	0
Comprehensive income (loss)	85	(54)
Less: Comprehensive income (loss) attributable to NCI	8	33
Comprehensive income (loss) attributable to Fluor	$ 77	$ (87)