Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2011

Employee Benefits

Components Of Estimated Pension And Postretirement Benefits Expense

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Pension expense
Service cost	$	21.5		$	20.1		$	42.8		$	40.2
Interest cost		48.9			45.9			97.0			91.9
Expected return on assets		(67.3	)		(64.4	)		(134.4	)		(128.9	)
Amortization, net		12.8			6.4			25.0			12.7
Net pension expense	$	15.9		$	8.0		$	30.4		$	15.9
Postretirement benefits expense
Service cost	$	2.3		$	3.0		$	4.6		$	6.1
Interest cost		6.2			7.1			12.4			14.2
Expected return on assets		(3.8	)		(3.9	)		(7.6	)		(7.8	)
Amortization, net		(1.3	)		(2.3	)		(2.5	)		(4.7	)
Net postretirement benefits expense	$	3.4		$	3.9		$	6.9		$	7.8