Incentive Stock Plans Schedule of Stock Option Activity (Details) (Stock Options [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares, Beginning Balance	1,609,129
Granted	190,360
Exercised	(400,856)
Cancelled	(5,411)
Number of Shares, Ending Balance	1,393,222
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price (per common share), Beginning Balance	$ 29.56
Granted	$ 52.65
Exercised	$ 26.14
Cancelled	$ 46.30
Weighted Average Exercise Price (per common share), Ending Balance	$ 33.79
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual term (in years), Options outstanding	5 years 10 months 24 days
Aggregate Intrinsic Value, Options outstanding	$ 14.1
Number of Shares, Options vested and expected to vest	1,391,464
Weighted Average Exercise Price (per common share), Options vested and expected to vest	$ 33.79
Weighted Average Remaining Contractual term (in years), Options vested and expected to vest	5 years 10 months 24 days
Aggregate Intrinsic Value, Options vested and expected to vest	14.1
Number of Shares, Options exercisable	1,061,807
Weighted Average Exercise Price (per common share), Options exercisable	$ 29.46
Weighted Average Remaining Contractual term (in years), Options exercisable	5 years 2 months 12 days
Aggregate Intrinsic Value, Options exercisable	$ 13.8