Pension and Other Postretirement Employee Benefit Plans - Weighted-Average Assumptions Benefit Obligations (Details 5)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Weighted-average assumptions used to determine benefit obligations
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets Period	10 years
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Support, Bond Indices	15-year-plus bond index
Defined Benefit Pension Plans, U.S. [Member]
Discount rate:
Defined benefit pension plans and OPEB plans	4.60%	5.50%
Defined Benefit Pension Plans, Non-U.S. [Member] | Maximum [Member]
Discount rate:
Defined benefit pension plans and OPEB plans	4.80%	5.50%
Rate of compensation increase	4.20%	4.50%
Defined Benefit Pension Plans, Non-U.S. [Member] | Minimum [Member]
Discount rate:
Defined benefit pension plans and OPEB plans	1.50%	1.60%
Rate of compensation increase	2.75%	3.00%
OPEB plans, U.S. [Member]
Discount rate:
Defined benefit pension plans and OPEB plans	4.70%	5.50%
OPEB plans, Non-U.S. [Member]
Discount rate:
Defined benefit pension plans and OPEB plans	0.00%	0.00%
Foreign Pension Plans and Other Foreign Postretirement Benefit Plans [Member]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Assumed for next year	0.00%	0.00%
Ultimate	0.00%	0.00%
Year when rate will reach ultimate	0	0
Pension and other postretirement employee benefit plans, U.S. [Member]
Discount rate:
Rate of compensation increase	4.00%	4.00%
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Assumed for next year	7.00%	7.00%
Ultimate	5.00%	5.00%
Year when rate will reach ultimate	2,017	2,017