Schedule of Foreign Currency Exchange Rate Effect Before Tax (Detail) In Millions, unless otherwise specified	3 Months Ended								3 Months Ended
	Mar. 31, 2013 PLN / US$ USD ($)		Mar. 31, 2013 RUR / US$ USD ($)		Mar. 31, 2013 EUR-USD USD ($)		Mar. 31, 2013 EUR-USD EUR (€)		Mar. 31, 2013 Eur Russian Ruble USD ($)	Mar. 31, 2013 Eur Russian Ruble EUR (€)
Effects Of Foreign Currency Movements [Line Items]
Value of notional amount	$ 376.7	[1]	$ 272.2	[1]	$ 567.5	[1]	€ 442.7	[1]	$ 39.0	€ 30.4
Pre-tax movement	$ 3.8	[1]	$ 2.7	[1]	$ 5.7	[1]			$ 0.4

[1] Reflects debt outstanding prior to giving effect to the Plan of Reorganization.