Incentive Compensation Plans (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	$ 7,859	$ 8,739	$ 23,738	$ 24,173
Less: Income tax benefit	(2,750)	(2,919)	(8,037)	(8,288)
Total share-based compensation expense, net of tax	5,109	5,820	15,701	15,885
Summary of stock option activity [Roll Forward]
Exercised (in shares)			(1,059)
Forfeited/Expired (in shares)			(288)
Options outstanding, end of period (in shares)	4,880		4,880
Stock option activity, additional disclosures [Abstract]
Options outstanding, weighted average exercise price, end of period (in dollars per share)	$ 39.96		$ 39.96
Options outstanding, aggregate intrinsic value, end of period	126,526		126,526
Restricted stock activity [Roll Forward]
Unvested shares, beginning of period (in shares)			1,101
Granted (in shares)			713
Vested and distributed (in shares)			(271)
Forfeited (in shares)			(137)
Unvested shares, end of period (in shares)	1,406		1,406
Restricted stock activity, additional disclosures [Abstract]
Unvested shares, weighted average grant date fair value, beginning of period (in dollars per share)			$ 37.41
Granted, weighted average grant date fair value (in dollars per share)			$ 48.73
Vested and distributed, weighted average grant date fair value (in dollars per share)			$ 45.47
Forfeited, weighted average grant date fair value (in dollars per share)	$ 42.70		$ 42.70
Unvested shares, weighted average grant date fair value, end of period (in dollars per share)	$ 41.06		$ 41.06
Rental Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	1,562	1,486	3,866	3,803
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	224	292	740	736
Selling, General and Adminstrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	6,073	6,961	19,132	19,634
Stock Options [Member]
Summary of stock option activity [Roll Forward]
Options outstanding, beginning of period (in shares)			5,470
Granted (in shares)			757
Stock option activity, additional disclosures [Abstract]
Options outstanding, weighted average exercise price, beginning of period (in dollars per share)			$ 39.20
Granted, weighted average exercise price (in dollars per share)	$ 46.98		$ 46.98
Exercised, weighted average exercise price (in dollars per share)	$ 40.93		$ 40.93
Forfeited/Expired, weighted average exercise price (in dollars per share)			$ 40.36
Options outstanding, weighted average remaining contractual term, end of period (in years)	6.84		6.84
Exercisable as of end of period (in shares)	2,371		2,371
Exercisable, weighted average exercise price, end of period (in dollars per share)	$ 41.47		$ 41.47
Exercisable, weighted average remaining contractual term, end of period (in years)			5.80
Exercisable, aggregate intrinsic value, end of period	$ 57,916		$ 57,916