Stock-Based Compensation Programs (Details) (USD $)	1 Months Ended		3 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Mar. 31, 2014 installment
Stock option and SSARs
Stock-Based Compensation Programs
Number of equal installments commencing one year from the date of grant			4
Vesting period			1 year
Expiration period of options			10 years
Granted (in shares)	1,361,390
Weighted average fair value at grant date (in dollars per share)	$ 9.81	$ 8.69
Weighted average assumptions used in estimation of fair values of options
Expected dividend yield (as a percent)	1.06%	1.13%
Expected stock price volatility (as a percent)	21.41%	22.02%
Risk-free interest rate (as a percent)	1.65%	1.02%
Expected life of options	5 years 6 months	5 years 6 months
Granted (in shares)	143,305	148,875
PCEQs
Stock-Based Compensation Programs
Vesting period			3 years
PCEQs | Minimum
Weighted average assumptions used in estimation of fair values of options
Vest range of participant's assigned award opportunity (as a percent)	0.00%	0.00%
PCEQs | Maximum
Weighted average assumptions used in estimation of fair values of options
Vest range of participant's assigned award opportunity (as a percent)	200.00%	200.00%