Sale of Accounts Receivable - Additional Information (Detail) In Millions, unless otherwise specified	12 Months Ended														12 Months Ended						12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2012 PLN	Dec. 31, 2011 USD ($)	Dec. 31, 2011 PLN	Mar. 31, 2013 USD ($)	Mar. 31, 2013 PLN	Dec. 24, 2012 USD ($)	Dec. 24, 2012 PLN	Sep. 28, 2012 USD ($)	Sep. 28, 2012 PLN	Mar. 31, 2012 PLN	Mar. 01, 2012 USD ($)	Jan. 02, 2012 USD ($)	Jan. 02, 2012 PLN	Dec. 31, 2012 ING Polska USD ($)	Dec. 31, 2012 ING Polska PLN	Dec. 31, 2011 ING Polska USD ($)	Dec. 31, 2011 ING Polska PLN	Feb. 24, 2011 ING Polska USD ($)	Feb. 24, 2011 ING Polska PLN	Dec. 31, 2012 Bank Handlowy And WBK USD ($)	Dec. 31, 2012 Bank Handlowy And WBK PLN	Dec. 31, 2012 Related Party USD ($)	Dec. 31, 2012 Related Party PLN	Dec. 31, 2011 Related Party USD ($)	Dec. 31, 2011 Related Party PLN
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum sale under factoring agreement																220.0			$ 84.9	290.0
Factoring agreements, limit	64.5	200.0			26.5	82.0	41.9	130.0	54.8	170.0	220.0	71.0	80.7	250.0
Factoring agreements maturity date	Apr. 30, 2012	Apr. 30, 2012
Factoring agreements extended maturity date	Feb. 28, 2013	Feb. 28, 2013
Total balance of accounts receivable under factoring															40.7	126.1	81.7	279.3
Accounts receivable sold during the period	410.4	1,272.0	399.3	1,364.6											41.6	128.8					31.1	96.5	128.7	399.0
Non-recourse factoring loss	3.4	10.7	2.8	9.2											0.3	0.8					0.1	0.4	1.3	4.0
Liability for recourse from factored receivables																							$ 2.8	8.6	$ 7.5	23.0