Incentive Compensation Plans (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	$ 8,234	$ 5,956	$ 15,879	$ 15,434
Less: Income tax benefit	(2,766)	(2,167)	(5,287)	(5,369)
Total share-based compensation expense, net of tax	5,468	3,789	10,592	10,065
Summary of stock option activity [Roll Forward]
Options outstanding, end of period (in shares)	5,038		5,038
Stock option activity, additional disclosures [Abstract]
Options outstanding, weighted average exercise price, beginning of period (in dollars per share)			$ 39.20
Options outstanding, weighted average exercise price, end of period (in dollars per share)	$ 40.17		$ 40.17
Restricted stock activity [Roll Forward]
Unvested shares, beginning of period (in shares)			1,101
Unvested shares, end of period (in shares)	1,360		1,360
Restricted stock activity, additional disclosures [Abstract]
Unvested shares, weighted average grant date fair value (in dollars per share)			$ 37.41
Unvested shares, weighted average grant date fair value, end of period (in dollars per share)	$ 39.81		$ 39.81
Rental Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	1,074	800	2,304	2,317
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	280	133	516	444
Selling, General and Adminstrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax share-based compensation expense	6,880	5,023	13,059	12,673
Stock Options [Member]
Summary of stock option activity [Roll Forward]
Options outstanding, beginning of period (in shares)			5,470
Granted (in shares)			757
Exercised (in shares)			919
Forfeited/Expired (in shares)			270
Stock option activity, additional disclosures [Abstract]
Granted, weighted average exercise price (in dollars per share)	$ 46.98		$ 46.98
Exercised, weighted average exercise price (in dollars per share)	$ 39.98		$ 39.98
Forfeited/Expired, weighted average exercise price (in dollars per share)			$ 40.35
Options outstanding, weighted average remaining contractual term (in years)	7.06		7.06
Options outstanding, aggregate intrinsic value	88,626		88,626
Exercisable as of end of period (in shares)	2,430		2,430
Exercisable, weighted average exercise price, end of period (in dollars per share)	$ 42.16		$ 42.16
Exercisable, weighted average remaining contractual term (in years)			5.97
Exercisable, aggregate intrinsic value	$ 38,211		$ 38,211
Restricted Stock [Member]
Restricted stock activity [Roll Forward]
Granted (in shares)			651
Vested and distributed (in shares)			264
Forfeited (in shares)			128
Restricted stock activity, additional disclosures [Abstract]
Granted, weighted average grant date fair value (in dollars per share)			$ 46.88
Vested and distributed, weighted average grant date fair value (in dollars per share)			$ 45.49
Forfeited, weighted average grant date fair value (in dollars per share)	$ 43.10		$ 43.10