CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue	$ 4,094	$ 3,963	$ 12,055	$ 11,654
Cost of revenue	(4,006)	(3,712)	(11,689)	(11,243)
Gross profit	88	251	366	411
G&A	(37)	(56)	(147)	(177)
Foreign currency gain (loss)	(2)	23	58	(62)
Operating profit	49	218	277	172
Interest expense	(11)	(14)	(35)	(47)
Interest income	48	56	149	166
Earnings before taxes	86	260	391	291
Income tax expense	(61)	(79)	(172)	(172)
Net earnings	25	181	219	119
Less: Net earnings (loss) attributable to NCI	(29)	(25)	(63)	(42)
Net earnings attributable to Fluor	54	206	282	161
Less: Dividends on CPS	0	10	0	29
Less: Make-whole payment on conversion of CPS	0	27	0	27
Net earnings available to Fluor common stockholders, basic	54	169	282	105
Net earnings available to Fluor common stockholders, diluted	$ 54	$ 169	$ 282	$ 105
Basic EPS available to Fluor common stockholders (in dollars per share)	$ 0.32	$ 1.18	$ 1.65	$ 0.73
Diluted EPS available to Fluor common stockholders (in dollars per share)	$ 0.31	$ 1.15	$ 1.63	$ 0.72