Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

Activity for nonvested stock awards classified as equity is as follows:

			Weighted Average
	Shares		Grant Date
	(000s)		Fair Value
Outstanding at December 31, 2011	1,661		$	20.36
Granted	864		22.96
Vested	(1,070	)	18.18
Forfeited	(52	)	23.59
Outstanding at December 31, 2012	1,403		23.57

Activity for cash-settled awards classified as a liability is as follows:

			Weighted Average
	Shares		Grant Date
	(000s)		Fair Value
Outstanding at December 31, 2011	153		$	23.80
Granted	117		23.23
Vested	(63	)	23.25
Outstanding at December 31, 2012	207		23.72

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Stock option activity is summarized as follows:

					Remaining	Intrinsic
	Shares		Weighted Average		Contractual Term	Value
	(000s)		Exercise Price		(in years)	(in millions)
Outstanding at December 31, 2011	1,477		$	20.13
Granted	276		23.35
Exercised	(62	)	11.37
Outstanding at December 31, 2012	1,691		20.98		4.6	$	3.1
Exercisable at December 31, 2012	1,202		$	19.86	3.7	$	3.1

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

Compensation expense for the stock plans, as reported in our consolidated statements of income, is as follows:

	Year Ended December 31
	2012		2011		2010
	(in millions of dollars)
Nonvested Stock Awards and Cash-Settled Awards	$	20.9	$	19.6	$	20.7
Stock Options	2.7		2.7		2.5
Other	0.6		1.2		2.0
Total Compensation Expense, Before Income Tax	$	24.2	$	23.5	$	25.2
Total Compensation Expense, Net of Income Tax	$	15.6	$	15.3	$	17.2