Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2011

Cash Balance Plan [Member]

Schedule Of Components Of Pension Cost

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Interest cost on projected benefit obligation	$	3.0		$	3.0		$	9.0		$	9.2
Service cost	1.1			0.6			3.0			1.9
Expected return on plan assets	(2.9		)	(3.1		)	(8.5		)	(9.2		)
Amortization and deferrals - net	2.3			1.7			5.8			4.9
Pension cost	$	3.5		$	2.2		$	9.3		$	6.8

Unfunded Executive Pension Plans [Member]

Schedule Of Components Of Pension Cost

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011			2010
Service cost	$	0.1	$	—	$	0.4		$	0.7
Interest cost on projected benefit obligation	0.3		0.5		1.0			1.5
Curtailment (benefit) / loss	—		—		(1.5		)	2.3
Settlement loss	—		1.4		—			1.4
Amortization and deferrals - net	—		—		—			(0.1		)
Pension cost	$	0.4	$	1.9	$	(0.1	)	$	5.8