Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Share-based Compensation [Abstract]

Summary Of Stock-Based Compensation Expense And Related Tax Benefits

Details of total stock-based compensation expense and related tax benefits for the periods indicated were as follows (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Stock based compensation expense:
Restricted share awards	$	1.2	$	1.0	$	3.4	$	2.8
Stock options	—		—		—		—
Total stock based compensation expense	$	1.2	$	1.0	$	3.4	$	2.8
Income tax benefit from stock based compensation:
Restricted share awards	$	0.6	$	0.4	$	1.4	$	2.1
Stock options	0.1		0.5		0.2		2.9
Total income tax benefit from stock based compensation	$	0.7	$	0.9	$	1.6	$	5.0
Excess tax benefit from stock based compensation:
Vested restricted shares (1)	$	0.1	$	—	$	0.1	$	1.0
Stock options exercised (1)	0.1		0.5		0.2		2.9
Total excess tax benefit from stock based compensation	$	0.2	$	0.5	$	0.3	$	3.9

(1) Excess tax benefits, which represent cash flows from tax deductions in excess of compensation expense recognized for stock options exercised and vested restricted shares, are classified as financing cash flows in the Company’s condensed unaudited consolidated statements of cash flows.