Consolidated Statement Of Cash Flows (Parenthetical) (2004-2010 [Member], Spanish tax settlement [Member]) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2013 EUR (€)	Sep. 30, 2012 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2012 EUR (€)
Payments pursuant to Spanish tax settlement	$ 1.9	€ 1.5	$ 105.5	$ 105.5	€ 84.0