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Stock-based Compensation (Details 4) (USD $)
In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Schedule of information on restricted stock units

Compensation expense

$ 7.7

^[1]

$ 4.3

^[1]

[1]	Stock-Based Compensation expense is recorded in our Corporate and other business segment.

- Definition

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.

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