Represents the aggregate intrinsic value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units, as calculated by applying the disclosed pricing methodology.

No definition available.

STOCK-BASED COMPENSATION (Details 4) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted and deferred stock units
Shares
Outstanding at the beginning of the period (in shares)	716,907
Granted (in shares)	450,169	409,351	290,003
Vested and released (in shares)	(128,340)
Forfeited (in shares)	(29,433)
Outstanding at the end of the period (in shares)	1,009,303	716,907
Vested or expected to vest at the end of the period (in shares)	1,003,454
Weighted Average Remaining Contractual Terms
Outstanding at the end of the period	1 year
Vested or expected to vest at the end of the period	1 year
Weighted Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 27.86
Granted (in dollars per share)	$ 45.20	$ 30.18	$ 27.55
Vested and released (in dollars per share)	$ 25.69
Forfeited (in dollars per share)	$ 34.12
Outstanding at the end of the period (in dollars per share)	$ 35.68	$ 27.86
Vested or expected to vest at the end of the period (in dollars per share)	$ 35.64
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	$ 47.9
Vested or expected to vest at the end of the period (in dollars)	47.6
Total intrinsic value of share awards vested (in dollars)	$ 6.1	$ 15.8	$ 8.1
Restricted stock surrendered in satisfaction of required minimum tax withholding obligations (in shares)	36,846	152,759	126,934
Restricted and deferred stock units \| Minimum
Aggregate Intrinsic Value
Vesting period	1 year
Restricted and deferred stock units \| Maximum
Aggregate Intrinsic Value
Vesting period	3 years
PRSUs
Shares
Granted (in shares)	0
Weighted average assumptions used in the Monte Carlo simulation model
Risk-free interest rate (as a percent)		0.44%	0.95%
Expected life		3 years	3 years
Expected volatility (as a percent)		45.00%	45.00%
Expected dividend yield (as a percent)		1.07%
PRSUs \| Minimum
Aggregate Intrinsic Value
Percentage multiplied to target award for determining the number of shares subject to award	0.00%
PRSUs \| Maximum
Aggregate Intrinsic Value
Percentage multiplied to target award for determining the number of shares subject to award	150.00%