Supplemental Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other current assets
Prepaid expenses and other	$ 595	$ 602
Deferred income taxes	444	502
Derivative assets-current	182	76
Insurance related receivables prepaid expenses and other	77	99
Total other current assets	1,298	1,279
Investments
Equity method	58	69
Cost method	41	45
Other investments	3	8
Total investments	102	122
Other assets
Deferred income taxes	889	360
Insurance related receivables and other	89	96
Cash surrender value of life insurance policies	245	236
Other	331	288
Total other assets	1,554	980
Other current liabilities
Accrued trade payables	533	547
Deferred income	541	521
Derivative liabilities	39	103
Dividends payable	648	567
Employee benefits and withholdings	172	195
Contingent liability claims and other	157	119
Property and other taxes	90	88
Pension and postretirement benefits	60	61
Deferred income taxes	34	37
Other	644	653
Total other current liabilities	2,918	2,891
Other liabilities
Long term income taxes payable	519	472
Employee benefits	262	315
Contingent liability claims and other	300	314
Long-term obligations under capital leases	59	58
Deferred income	21	19
Deferred income taxes	141	538
Other	253	268
Total other liabilities	1,555	1,984
Drafts payable
Drafts payable on demand included in Accounts payable	$ 1	$ 24