20.Quarterly Financial Data (Unaudited)

The following is a summary of the quarterly results of operations:

(in millions, except per share amounts)	First Quarter		Second Quarter			Third Quarter			Fourth Quarter
Year ended December 31, 2017
Revenue	$	4,835.9	$	4,716.1		$	4,941.6		$	5,027.4
Cost of revenue	4,685.9		4,684.1			4,720.1			4,812.4
Earnings (loss) before taxes	93.4		(23.9		)	165.4			151.5
Net earnings (loss)	77.4		(6.6		)	112.9			80.8
Net earnings (loss) attributable to Fluor Corporation	60.6		(24.0		)	94.5			60.3
Earnings (loss) per share
Basic	$	0.43	$	(0.17	)	$	0.68		$	0.43
Diluted	0.43		(0.17		)	0.67			0.43
Year ended December 31, 2016
Revenue	$	4,423.9	$	4,856.1		$	4,766.9		$	4,989.6
Cost of revenue	4,168.1		4,607.9			4,729.7			4,740.5
Earnings (loss) before taxes	189.2		181.4			(2.7		)	178.7
Net earnings	119.0		120.0			17.4			71.0
Net earnings attributable to Fluor Corporation	104.3		101.8			4.8			70.5
Earnings per share
Basic	$	0.75	$	0.73		$	0.03		$	0.51
Diluted	0.74		0.72			0.03			0.50

Net earnings in the first, second and fourth quarters of 2017 were adversely affected by pre-tax charges totaling $25 million (or $0.11 per diluted share), $194 million (or $0.89 per diluted share), and $41 million (or $0.19 per diluted share), respectively, resulting from forecast revisions for estimated cost growth at three fixed-price, gas-fired power plant projects in the southeastern United States. Net earnings in the second, third and fourth quarters of 2017 were adversely affected by pre-tax charges totaling $6 million (or $0.03 per diluted share), $9 million (or $0.04 per diluted share), and $29 million (or $0.13 per diluted share), respectively, resulting from forecast revisions for estimated cost increases on a downstream project. Additionally, net earnings in the fourth quarter of 2017 were adversely affected by $37 million (or $0.27 per diluted share) related to the recently enacted tax reform legislation in the United States.

Net earnings in the second and third quarters of 2016 were adversely affected by pre-tax charges of $24 million (or $0.10 per diluted share) and $241 million (or $1.10 per diluted share), respectively, related to forecast revisions for estimated cost increases on a petrochemicals project in the United States.