Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule Of Transactions Of Stock Option

	Options		Weighted Average Option Price ($)
Outstanding at December 31, 2012	1,558,436		22.21
Granted	—		—
Exercised	(1,148,218	)	22.10
Cancelled	(1,000	)	19.75
Outstanding at December 31, 2013	409,218		22.53
Exercisable at December 31, 2013	409,218		22.53

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule Of Transactions Of Share Based Compensation Other Than Stock Option

	Restricted Stock Units		Weighted Average Grant Date Fair  Value ($)
Nonvested at December 31, 2012	557,245		17.58
Granted	69,651		25.70
Forfeited	(71,969	)	14.20
Vested	(193,191	)	14.23
Nonvested and expected to vest at December 31, 2013	361,736		21.55

Performance Shares [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule Of Transactions Of Share Based Compensation Other Than Stock Option

	Contingent Awards		Weighted Average Grant Date Fair  Value ($)
Nonvested at December 31, 2012	1,999,416		16.99
Granted	664,776		23.57
Forfeited	(190,450	)	17.25
Vested	(499,405	)	13.06
Nonvested and expected to vest at December 31, 2013	1,974,337		20.17