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Employee Benefit Plans (Reconciliation of the Beginning and Ending Balances for Investments) (Details) (Level 3 [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Level 3 [Member]
Beginning balance	$ 15.9	$ 15.4
Actual return on plan assets held	(2.6)	0.4
Foreign currency changes	0.2	0.1
Ending balance	$ 13.5	$ 15.9

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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