Employee Benefit Plans (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated by region
Employee Benefit Plans (Textual) [Abstract]
Health care cost trend rate for employees under age 65	8.50%
Health care cost trend rate for participants over age 65	7.00%
Age limit, maximum	over age 65
Age limit, minimum	under age 65
Expected benefit payment period	next ten years
Health care cost trend rate for employees under age 65 and over age 65 in 2022	4.50%
Contribution from employee	The Thrift Plans allow eligible employees to elect to contribute of their salaries to an investment trust. Employee contributions are matched by the Company in cash at the rate of $1.00 per $1.00 employee contribution for the first 5% to 6% of the employee’s salary and such contributions vest immediately.In addition, we make cash contributions for all eligible employees between 2% and 5% of their salary depending on the age, Such contributions are fully vested to the employee after three years of employment.
Accrued postemployment liability for Continuation Benefits	$ 23,000,000	$ 15,000,000
Minimum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage of employee contribution	5.00%
Percentage of Additional Employer Match	2.00%
Employer contribution match	1
Maximum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage of employee contribution	6.00%
Percentage of Additional Employer Match	5.00%
Employer contribution match	1
Government Mortgage-backed Securities [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	16.00%
Cash [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	6.00%
Asset-backed Securities [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	5.00%
Corporate Bonds [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	22.00%
Mutual Funds [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	6.00%
Municipal Bonds [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	4.00%
Equities [Member] | Asia Pacific [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated by region	8.00%
Equities [Member] | Europe [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated by region	8.00%
Equities [Member] | UK [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated by region	28.00%
Equities [Member] | North America [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated by region	8.00%
Equities [Member] | Global [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated by region	48.00%
Government bonds [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	10.00%
Mutual Fund Corporate Bonds [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	17.00%
Mutual Fund Non US Government Bonds [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Percentage allocated to fixed income securities	14.00%
Pension Benefit Plans [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Defined Benefit Plan Amortization Of Net Gains Losses	22,000,000
Defined Benefit Plan Amortization Of Net Prior Service Cost Credits	less than one million
U.S. Pension Benefits [Member] | Fixed Income [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Investment in Securities to Achieve Return	22% in corporate bonds; 17% in mutual funds (corporate bonds); 16% in government mortgage-backed securities; 14% in mutual funds (non-U.S. government bonds); 10% in government bonds; 6% in mutual funds (government bonds); 5% in asset-backed securities; 4% in municipal bonds and 6% in cash and other securities
Non-U.S. Pension Benefits [Member] | Equities [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Investment in Securities to Achieve Return	48% Global, 28% U.K.,8% North America, 8% Asia Pacific, and 8% Europe
Other Postretirement Benefits [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Defined Benefit Plan Amortization Of Net Gains Losses	1,000,000
Defined Benefit Plan Amortization Of Net Prior Service Cost Credit	2,000,000
Estimated Medicare subsidies per year	2,000,000
Other Postretirement Benefits [Member] | Minimum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	16,000,000
Expected Employer Contribution	16,000,000
Other Postretirement Benefits [Member] | Maximum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	18,000,000
Expected Employer Contribution	18,000,000
Thrift plan and several other non US defined contribution plan [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Total contributions to defined contribution plans	189,000,000	169,000,000	129,000,000
Non Qualified Defined Contribution Plan for Non US Employees [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Total contributions to defined contribution plans	11,000,000	11,000,000	11,000,000
Defined Benefit Pension [Member] | U.S. Pension Benefits [Member] | Minimum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	60,000,000
Expected Employer Contribution	60,000,000
Defined Benefit Pension [Member] | U.S. Pension Benefits [Member] | Maximum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	65,000,000
Expected Employer Contribution	65,000,000
Defined Benefit Pension [Member] | Non-U.S. Pension Benefits [Member] | Minimum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	20,000,000
Expected Employer Contribution	20,000,000
Defined Benefit Pension [Member] | Non-U.S. Pension Benefits [Member] | Maximum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	30,000,000
Expected Employer Contribution	30,000,000
Defined Contribution Pension [Member] | Minimum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	263,000,000
Expected Employer Contribution	263,000,000
Defined Contribution Pension [Member] | Maximum [Member]
Additional Employee Benefit Plans (Textual) [Abstract]
Expected Employer Contribution	286,000,000
Expected Employer Contribution	$ 286,000,000