CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 3,939	$ 3,299	$ 7,692	$ 6,422
Cost of revenue	(3,741)	(3,184)	(7,532)	(6,185)
Gross profit	198	115	160	237
G&A	(60)	(45)	(121)	(117)
Impairment	0	0	0	63
Foreign currency gain (loss)	(44)	36	(86)	18
Operating profit (loss)	94	106	(47)	201
Interest expense	(16)	(13)	(32)	(29)
Interest income	53	12	110	19
Earnings before taxes	131	105	31	191
Income tax expense	(63)	(32)	(93)	(63)
Net earnings (loss)	68	73	(62)	128
Less: Net earnings (loss) attributable to NCI	7	7	(16)	14
Net earnings (loss) attributable to Fluor	61	66	(46)	114
Less: Dividends on CPS	10	10	20	20
Net earnings (loss) available to Fluor common stockholders, basic	51	56	(66)	94
Net earnings (loss) available to Fluor common stockholders, diluted	$ 51	$ 56	$ (66)	$ 94
EPS available to Fluor common stockholders, basic (in dollars per share)	$ 0.36	$ 0.40	$ (0.46)	$ 0.67
EPS available to Fluor common stockholders, diluted (in dollars per share)	$ 0.35	$ 0.38	$ (0.46)	$ 0.66