Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Employee Benefits [Abstract]

Components Of The Estimated Net Pension And Postretirement Benefits (Income) Expense

	Three Months Ended
	March 31,
	2012			2011
Pension (income) expense
Service cost	$	1.9		$	21.3
Interest cost		47.4			48.1
Expected return on assets		(65.8	)		(67.1	)
Amortization, net		7.1			12.2
Net pension (income) expense	$	(9.4	)	$	14.5
Postretirement benefits (income) expense
Service cost	$	1.7		$	2.3
Interest cost		4.6			6.2
Expected return on assets		(3.5	)		(3.8	)
Amortization, net		(5.0	)		(1.2	)
Net postretirement benefits (income) expense	$	(2.2	)	$	3.5