Employee Benefit Plans Pension Plan Assets by Category (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	.50
Defined Benefit Plan, Actual Plan Asset Allocations	50.80%	51.60%
United States Pension Plans of US Entity, Defined Benefit [Member] | Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	30% - 35%
Defined Benefit Plan, Actual Plan Asset Allocations	35.50%	32.80%
United States Pension Plans of US Entity, Defined Benefit [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0% - 15%
Defined Benefit Plan, Actual Plan Asset Allocations	13.50%	11.00%
United States Pension Plans of US Entity, Defined Benefit [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0% - 5%
Defined Benefit Plan, Actual Plan Asset Allocations	0.20%	4.60%
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Foreign Pension Plans, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	45% - 55%
Defined Benefit Plan, Actual Plan Asset Allocations	44.50%	50.50%
Foreign Pension Plans, Defined Benefit [Member] | Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	45% - 55%
Defined Benefit Plan, Actual Plan Asset Allocations	47.90%	44.30%
Foreign Pension Plans, Defined Benefit [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0%
Defined Benefit Plan, Actual Plan Asset Allocations	0.00%	0.00%
Foreign Pension Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0% - 5%
Defined Benefit Plan, Actual Plan Asset Allocations	7.60%	5.20%