CONSOLIDATED STATEMENT OF FINANCIAL POSITION (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENT OF FINANCIAL POSITION
Notes and accounts receivable - trade, allowances	$ 263	$ 255
Short-term financing receivables, allowances	273	288
Other accounts receivable, allowances	20	17
Long-term financing receivables, allowances	$ 64	$ 66
Common stock, par value (in dollars per share)	$ 0.20	$ 0.20
Common stock, Shares authorized (in shares)	4,687,500,000	4,687,500,000
Common stock, Shares issued (in shares)	2,201,287,322	2,197,561,159
Treasury stock, Shares (in shares)	1,092,492,926	1,080,193,483