Employee Benefit And Retirement Plans (Schedule Of Other Postretirement Benefit Costs) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Employee Benefit And Retirement Plans
Service cost-benefits earned during the period	$ 0.3	$ 0.3	$ 0.6	$ 0.7
Interest cost on projected benefit obligation	2.1	2.3	4.2	4.6
Amortization of prior service benefit and actuarial loss, net	(0.3)	(0.3)	(0.6)	(0.7)
Net other postretirement benefit costs	$ 2.1	$ 2.3	$ 4.2	$ 4.6

Amortization of Prior Service Benefit and Actuarial Loss Net

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- Definition

Total costs associated with other postretirement benefit plans.

+ Details

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- Details

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a, h

+ Details

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- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

+ Details

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