Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Summary of quarterly results of operations

(in millions, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Year ended December 31, 2021
Revenue	$	2,939	$	3,236	$	3,103	$	3,157
Cost of revenue	(2,846)		(3,177)		(2,997)		(3,003)
Earnings (loss) from Cont Ops before taxes	(28)		(13)		70		(157)
Net earnings (loss) from Cont Ops	(28)		(14)		43		(145)
Amounts attributable to Fluor Corporation:
Net earnings (loss) from Cont Ops	(61)		(6)		46		(161)
Net earnings (loss) from Disc Ops	(26)		(108)		(6)		(118)
Net earnings (loss)	$	(87)	$	(114)	$	40	$	(279)
Basic earnings (loss) per share attributable to Fluor Corporation:
Net earnings (loss) from Cont Ops	$	(0.43)	$	(0.08)	$	0.26	$	(1.21)
Net earnings (loss) from Disc Ops	(0.19)		(0.76)		(0.04)		(0.84)
Net earnings (loss)	$	(0.62)	$	(0.84)	$	0.22	$	(2.04)
Diluted earnings (loss) per share attributable to Fluor Corporation:
Net earnings (loss) from Cont Ops	$	(0.43)	$	(0.08)	$	0.26	$	(1.21)
Net earnings (loss) from Disc Ops	(0.19)		(0.76)		(0.04)		(0.84)
Net earnings (loss)	$	(0.62)	$	(0.84)	$	0.22	$	(2.04)
(in millions, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Year ended December 31, 2020
Revenue	$	3,698	$	3,735	$	3,457	$	3,268
Cost of revenue	(3,634)		(3,656)		(3,324)		(3,144)
Earnings (loss) from Cont Ops before taxes	(32)		23		54		(42)
Net earnings (loss) from Cont Ops	31		(8)		26		(61)
Amounts attributable to Fluor Corporation:
Net earnings (loss) from Cont Ops	22		(15)		21		(107)
Net earnings (loss) from Disc Ops	(288)		(10)		(2)		(56)
Net earnings (loss)	$	(266)	$	(25)	$	19	$	(163)
Basic earnings (loss) per share attributable to Fluor Corporation:
Net earnings (loss) from Cont Ops	$	0.15	$	(0.11)	$	0.15	$	(0.76)
Net earnings (loss) from Disc Ops	(2.05)		(0.07)		(0.01)		(0.40)
Net earnings (loss)	$	(1.90)	$	(0.18)	$	0.14	$	(1.16)
Diluted earnings (loss) per share attributable to Fluor Corporation:
Net earnings (loss) from Cont Ops	$	0.15	$	(0.11)	$	0.15	$	(0.76)
Net earnings (loss) from Disc Ops	(2.05)		(0.07)		(0.01)		(0.40)
Net earnings (loss)	$	(1.90)	$	(0.18)	$	0.14	$	(1.16)