Share-Based Compensation And Capital Stock Summary of Change in Stock-Based Award Activity (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at January 1 - Shares	1,934,034		1,573,726		1,732,674
Granted - Shares	173,413		160,408		166,306
Special Dividend Adjustment - Shares			497,497
Exercised - Shares	(347,180)		(266,754)		(175,386)
Expired - Shares	(75,473)
Forfeited - Shares	(22,842)		(30,843)		(149,868)
Outstanding at December 31 - Shares	1,661,952		1,934,034		1,573,726
Options Exercisable at December 31 - Shares	1,181,374		1,302,624		953,159
Outstanding at January 1 - Weighted average exercise price	$ 25.80	[1]	$ 33.30		$ 31.43
Granted - Weighted average exercise price	$ 36.76		$ 35.60	[1]	$ 41.25
Special Dividend Adjustment - Weighted average exercise price			$ 25.31
Exercised - Weighted average exercise price	$ 25.54		$ 26.57	[1]	$ 21.92
Expired - Weighted average exercise price	$ 36.99
Forfeited - Weighted average exercise price	$ 28.94		$ 36.97	[1]	$ 33.76
Outstanding at December 31 - Weighted average exercise price	$ 26.44		$ 25.80	[1]	$ 33.30
Options Exercisable at December 31 - Weighted average exercise price	$ 24.61		$ 25.62	[1]	$ 33.36
Weighted Average Contractual Term - Outstanding at December 31	3 years		4 years		4 years 2 months 12 days
Weighted Average Contractual Term - Options Exercisable at December 31	2 years 2 months 12 days		3 years 1 month 6 days		3 years 9 months 18 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at January 1 - Shares	606,547		565,627		592,131
Granted - Shares	225,240		266,159		247,298
Vested - Shares	(227,890)		(198,415)		(205,222)
Forfeited - Shares	(40,552)		(26,824)		(68,580)
Outstanding at December 31 - Shares	563,345		606,547		565,627
Outstanding at January 1 - Weighted average grant date fair value	$ 35.17		$ 34.43		$ 31.81
Granted - Weighted average grant date fair value	$ 37.74		$ 35.76		$ 38.84
Vested - Weighted average grant date fair value	$ 33.94		$ 33.75		$ 32.46
Forfeited - Weighted average grant date fair value	$ 35.85		$ 36.06		$ 33.55
Outstanding at December 31 - Weighted average grant date fair value	$ 36.64		$ 35.17		$ 34.43
Performance Vested Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at January 1 - Shares	170,116		109,769		127,912
Granted - Shares	80,184		117,523		25,036
Performance-Based Leveraging - Shares	9,192	[2]
Vested - Shares	(39,816)		0		0
Forfeited - Shares	(3,334)		(57,176)		(43,179)
Outstanding at December 31 - Shares	216,342		170,116		109,769
Outstanding at January 1 - Weighted average grant date fair value	$ 35.56		$ 35.57		$ 33.43
Granted - Weighted average grant date fair value	$ 39.48		$ 35.27		$ 41.25
Performance-Based Leveraging - Weighted average grant date fair value	$ 32.60
Vested - Weighted average grant date fair value	$ 32.60		$ 0		$ 0
Forfeited - Weighted average grant date fair value	$ 41.25		$ 34.98		$ 32.53
Outstanding at December 31 - Weighted average grant date fair value	$ 37.34		$ 35.56		$ 35.57

[1] The weighted average exercise price for options outstanding and exercisable reflect the reduction of the option price for outstanding options as described under "Special Dividend Adjustment". The weighted average exercise price for options granted, exercised or forfeited reflects the option price in effect at the time of the transaction.

[2] PVRSU units outstanding have been increased by 9,192 units due to the Company exceeding the targeted performance conditions contained in PVRSU's granted in prior periods during the year ended December 31, 2013.