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Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental Cash Flow Elements [Abstract]
Interest income received	$ 1.4	$ 1.8
Interest expense paid	8.4	10.0
Income taxes paid	6.1	1.6
Payments to employees related to SARs exercises	$ 6.5	$ 2.1

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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- Definition

The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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