XML 71 R65.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation (Compensation Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Compensation Expense and Tax Benefit
Compensation expense	$ 30.3	$ 31.0	$ 36.6
Income tax benefit	11.7	12.0	14.2
Total	$ 18.6	$ 19.0	$ 22.4

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References+ Details