Operating Segment (Summary of the Contribution of Total Net Operating Revenues) (Details)	9 Months Ended
	Sep. 30, 2011 banks percent customers	Oct. 01, 2010 percent customers
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	100.00%	100.00%
Great Britain [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	33.00%	39.00%
France [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	29.00%	32.00%
Belgium [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	16.00%	19.00%
The Netherlands [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	9.00%	10.00%
Norway [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	7.00%
Sweden [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net operating revenues	6.00%