Employee Benefit Plans (Schedule Of Restricted Stock And Restricted Stock Units Activity) (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended		12 Months Ended
	Jan. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance	955,615	[1]	1,324,312	[1]	1,263,218	[1]	1,463,298
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	73,609		257,797		482,340		571,163
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(518,240)	[2]	(400,180)	[2]	(504,813)	[2]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			(108,254)		(21,066)		(266,430)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			955,615	[1]	1,324,312	[1]	1,263,218	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance	$ 16.16	[1],[3]	$ 15.09	[1],[3]	$ 14.80	[1],[3]	$ 16.93	[3]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 24.86	[3]	$ 18.33	[3]	$ 12.77	[3]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			$ 17.70	[2],[3]	$ 18.07	[2],[3]	$ 19.87	[2],[3]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			$ 16.49	[3]	$ 15.00	[3]	$ 12.55	[3]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance			$ 16.16	[1],[3]	$ 15.09	[1],[3]	$ 14.80	[1],[3]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value			$ 11.4		$ 6.7		$ 6.7
Deferred Compensation Arrangement with Individual, Distributions Paid	9.2		7.1		5.5		5.9
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			67,520
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance			$ 15.80
Deferred Compensation Arrangement with Individual, Distributions Paid	0.8
Deferred Compensation Liability, Current and Noncurrent			$ 1.3

[1] Includes 67,520 shares of RSUs with the grant date fair value of $15.80 per share. In December 2013, management elected to pay out the January 2014 vesting of these RSUs in cash. As a result, we recorded a $1.3 million liability associated with these RSUs at December 31, 2013. We paid $0.8 million of this liability in January 2014.

[2] Total fair value of share-based awards that vested during the years ended December 31, 2013, 2012 and 2011 was $11.4 million, $6.7 million and $6.7 million, respectively.

[3] Represents the weighted average grant date fair value, which is based on the quoted market price of the common stock on the business day prior to the date of grant.