Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

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

Schedule of Nonvested Share 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, 2010	2,099		$	16.85
Granted	715		26.13
Vested	(1,106	)	17.35
Forfeited	(47	)	19.21
Outstanding at December 31, 2011	1,661		20.36

Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block]

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

			Weighted Average
	Shares		Grant Date
	(000s)		Fair Value
Outstanding at December 31, 2010	102		$	20.79
Granted	85		26.22
Vested	(34	)	20.79
Outstanding at December 31, 2011	153		23.80

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)	(000s)
Outstanding at December 31, 2010	3,357		$	22.58
Granted	216		26.29
Exercised	(657	)	17.62
Expired	(1,439	)	27.91
Outstanding at December 31, 2011	1,477		20.13		5.0	$	3,811
Exercisable at December 31, 2011	947		$	19.89	4.4	$	2,414

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
	2011		2010		2009
	(in millions of dollars)
Nonvested Stock Awards and Cash-Settled Awards	$	19.6	$	20.7	$	22.4
Performance Restricted Stock Units	0.4		1.5		6.8
Stock Options	2.7		2.5		3.7
Other	0.8		0.5		1.0
Total Compensation Expense, Before Income Tax	$	23.5	$	25.2	$	33.9
Total Compensation Expense, Net of Income Tax	$	15.3	$	17.2	$	22.0