Supplemental Disclosures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts
Interest paid	$ 2.5	$ 2.6	$ 3.9
Interest capitalized	0	0	1.5
Income taxes paid	69.8	33.7	40.0
Capital spending in accounts payable and accrued liabilities	3.6	4.3	4.9
Allowance for Doubtful Accounts [Member]
Allowance for doubtful accounts
Beginning balance	0.7	0.7	0.7
Bad debt expense	0	0.1	0.1
Write-offs and discounts	(0.2)	(0.1)	0
Currency translation	(0.1)	0	(0.1)
Ending balance	$ 0.4	$ 0.7	$ 0.7