Pension Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on asset assumptions	7.50%	8.00%	8.00%
Weighted average rate of return assumption	4.95%	4.90%
Expense for all defined benefit and defined contributions pension plans	$ 181	$ 166	$ 126
Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net prior service credits, before tax	2
Unrecognized net prior service credits, net of tax	2
Unrecognized actuarial losses, before tax	1,000
Unrecognized actuarial losses, net of tax	639
Prior service credits expected to be recognized accumulated comprehensive income in net periodic pension cost, before tax	0.2
Prior service credits expected to be recognized accumulated comprehensive income in net periodic pension cost, net of tax	0.1
Actuarial loss expected to be recognized accumulated comprehensive income in net periodic pension cost, before tax	36
Actuarial loss expected to be recognized accumulated comprehensive income in net periodic pension cost, net of tax	23
U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets in equity portfolios, minimum	60.00%
Percentage of plan assets in equity portfolios, maximum	70.00%
Employer contributions	55.0
Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	53.0
Expected employer contributions within the next year	$ 52
2013 Expected Rate Of Return | U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on asset assumptions	7.50%
Minimum | Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on asset assumptions	1.25%	1.25%
Maximum | Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on asset assumptions	7.10%	7.90%