Borrowings (Senior Secured Notes Due 2016) (Detail) In Millions, unless otherwise specified	0 Months Ended		0 Months Ended			0 Months Ended
	Dec. 02, 2009 9.125% Senior Secured Notes Due 2016 [Member] USD ($)	Jun. 30, 2012 9.125% Senior Secured Notes Due 2016 [Member]	Dec. 02, 2009 8.875% Senior Secured Notes Due 2016 [Member] USD ($)	Dec. 02, 2009 8.875% Senior Secured Notes Due 2016 [Member] EUR (€)	Jun. 30, 2012 8.875% Senior Secured Notes Due 2016 [Member]	Dec. 09, 2010 8.875% Senior Secured Notes Due 2016 [Member] Additional Debt [Member] USD ($)	Dec. 09, 2010 8.875% Senior Secured Notes Due 2016 [Member] Additional Debt [Member] EUR (€)	Jan. 04, 2010 Senior Secured Notes Due 2016 [Member] USD ($)	Jan. 04, 2010 Senior Secured Notes Due 2016 [Member] EUR (€)	Jun. 30, 2012 Senior Secured Notes Due 2016 [Member] USD ($)	Dec. 31, 2011 Senior Secured Notes Due 2016 [Member] USD ($)
Debt Instrument [Line Items]
Face value of debt issued	$ 380.0		$ 507.0	€ 380.0		$ 66.7	€ 50.0
Interest rate percentage on issued debt	9.125%	9.125%	8.875%	8.875%	8.875%	8.875%	8.875%
Debt instrument maturity year	2016		2016	2016		2016	2016
Redemption of senior secured notes								327.4	245.4
Accrued interest										$ 6.9	$ 7.0