Spin-Off (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2011
Current assets of Discontinued Operations:
Cash and cash equivalents of discontinued operations					$ 1,622
Receivables of discontinued operations					5,041
Inventories of discontinued operations					3,679
Other current assets of discontinued operations					170
Total current assets of discontinued operations					10,512
Noncurrent assets of discontinued operations:
Equity method investments of discontinued operations					323
Property, plant, and equipment of discontinued operations					11,935
Goodwill of discontinued operations					847
Other noncurrent assets of discontinued operations					351
Total assets of discontinued operations					23,968
Current liabilities of discontinued operations:
Accounts payable of discontinued operations					7,329
Payroll and benefits payable of discontinued operations					222
Accrued and deferred taxes of discontinued operations					443
Other current liabilities of discontinued operations					461
Long term debt of discontinued operations, due within one year					12
Total current liabilities of discontinued operations					8,467
Long term debt of discontinued operations					3,262
Deferred income taxes of discontinued operations					1,576
Defined benefit postretirement plan obligations of discontinued operations					1,489
Deferred credits and Other noncurrent liabilities of Discontinued Operations					276
Total liabilities of discontinued operations					15,070
Discontinued Operations Disclosure [Abstract]
Revenues applicable to discontinued operations	0	15,897	38,602	45,054
Pretax income from discontinued operations	0	445	2,012	693
Spin off transaction costs			$ 74