CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2010		Sep. 30, 2010
Amortization of benefit plan costs, tax	$ 2.4	[1]	$ 18.6	[1]

[1] Amortization of benefit plan costs for the three-month and nine-month periods ended September 30, 2010 is shown net of tax of $2.4 million and $18.6 million, respectively. The tax impact on other amounts presented is not significant.