Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Data

The following quarterly financial data for the years ended December 31, 2015 and 2014 has been prepared in accordance with GAAP:

(In millions, except share and per share data)	2015
	Quarters Ended
	March 31		June 30		September 30		December 31
Income Statement Data
Revenue	$	194.2	$	203.1	$	210.2	$	217.8
Income before provision for income taxes	113.3		117.4		117.9		125.9
Net income	71.5		74.2		74.0		80.0
Net income per share (1):
Basic	$	3.42	$	3.54	$	3.53	$	3.86
Diluted	$	3.41	$	3.54	$	3.53	$	3.84
(In millions, except share and per share data)	2014
	Quarters Ended
	March 31		June 30		September 30		December 31
Income Statement Data
Revenue	$	176.9	$	179.8	$	181.7	$	185.1
Income before provision for income taxes	80.0		109.2		115.3		116.4
Net income	49.8		69.4		74.0		73.0
Net income per share (1):
Basic	$	2.12	$	3.06	$	3.38	$	3.46
Diluted	$	2.12	$	3.06	$	3.38	$	3.45

(1) Basic and diluted net income per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted net income per share.