Subsequent Event Subsequent Event (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Restructuring charges, before tax	$ 31	$ 95	$ 85	$ 267
U.S. Pension Plan [Member]
Vested benefit obligation lump sum offering	570
Percent of settlement on U.S. Benefit Obligation	15.00%
Percent defined benefit plan recognized net gain loss due to settlements	45.00%
Minimum [Member] | European Strategic Changes [Member] | workforce reduction costs [Member]
Restructuring charges, before tax	140
Minimum [Member] | European Strategic Changes [Member] | Impairment in Value of Asset [Member]
Restructuring charges, before tax	120
Minimum [Member] | European Strategic Changes [Member] | Incremental Depreciation [Member]
Restructuring charges, before tax	30
Minimum [Member] | European Strategic Changes [Member] | Other Associated Costs [Member]
Restructuring charges, before tax	10
Minimum [Member] | European Strategic Changes [Member] | Target Date December 2014 [Member]
Restructuring charges, after tax	250
Restructuring charges, before tax	300
Percentage Of Cash Costs To Total Restructuring Charges	50.00%
Maximum [Member] | European Strategic Changes [Member] | workforce reduction costs [Member]
Restructuring charges, before tax	175
Maximum [Member] | European Strategic Changes [Member] | Impairment in Value of Asset [Member]
Restructuring charges, before tax	150
Maximum [Member] | European Strategic Changes [Member] | Incremental Depreciation [Member]
Restructuring charges, before tax	40
Maximum [Member] | European Strategic Changes [Member] | Other Associated Costs [Member]
Restructuring charges, before tax	35
Maximum [Member] | European Strategic Changes [Member] | Target Date December 2014 [Member]
Restructuring charges, after tax	350
Restructuring charges, before tax	$ 400
Percentage Of Cash Costs To Total Restructuring Charges	60.00%