Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly data

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
Year Ended December 31, 2016
Revenues from services	$	4,587.7	$	5,022.1	$	5,088.2	$	4,956.1	$	19,654.1
Gross profit	773.8		860.7		858.3		841.0		3,333.8
Operating profit	131.7		196.0		211.1		212.0		750.8
Net earnings	71.7		115.4		129.2		127.4		443.7
Net earnings per share — basic	$	0.98	$	1.61	$	1.89	$	1.89	$	6.33
Net earnings per share — diluted	0.98		1.60		1.87		1.87		6.27
Dividends per share	—		0.86		—		0.86		1.72
Market price:
High	$	81.82	$	85.38	$	72.61	$	92.83
Low	70.33		59.90		60.67		71.50
Year Ended December 31, 2015
Revenues from services	$	4,542.2	$	4,861.3	$	4,972.5	$	4,953.9	$	19,329.9
Gross profit	762.0		830.6		852.1		851.1		3,295.8
Operating profit (a)	122.8		178.7		206.3		181.1		688.9
Net earnings (b)	65.7		105.7		123.9		123.9		419.2
Net earnings per share — basic	$	0.83	$	1.35	$	1.63	$	1.67	$	5.46
Net earnings per share — diluted (c)	0.83		1.33		1.61		1.66		5.40
Dividends per share	—		0.80		—		0.80		1.60
Market price:
High	$	86.92	$	92.00	$	96.56	$	93.24
Low	63.79		82.76		77.43		80.48

(a) Included restructuring costs of $16.4 recorded in the fourth quarter.

(b) Included non-operating gains of $10.6 recorded in the fourth quarter.

(c) Included in the results are restructuring costs per diluted share of $(0.17) and non-operating gains per diluted share of $0.15 for the fourth quarter.