Consolidated Cash Flow Statement (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Activities
Net Income	$ 1,828	$ 1,684	$ 1,943
Depreciation and amortization	857	1,091	813
Asset Impairments	171	58
Stock-based Compensation	67	48	52
Deferred income taxes	224	274	(12)
Net losses on asset dispositions	35	(6)	26
Equity companies' earnings in excess of dividends paid	(27)	(23)	(48)
(Increase) decrease in operating working capital	119	(262)	24
Postretirement benefits	7	(574)	(125)
Other	7	(2)	71
Cash Provided by Operations	3,288	2,288	2,744
Investing Activities
Capital spending	(1,093)	(968)	(964)
Proceeds from maturity of note receivable	0	220	0
Proceeds from sales of investments	23	28	47
Investments in time deposits	(212)	(158)	(131)
Maturities of time deposits	95	141	248
Proceeds from disposition of property	9	51	9
Other	(6)	5	10
Cash Used for Investing	(1,184)	(681)	(781)
Financing Activities
Cash dividends paid	(1,151)	(1,099)	(1,066)
Net increase (decrease) in short-term debt	271	13	(28)
Proceeds from issuance of long-term debt	315	839	515
Repayments of long-term debt	(492)	(107)	(506)
Redemption of redeemable preferred securities of subsidiarry	0	(500)	0
Cash paid on redeemable preferred securities of subsidiary	(28)	(57)	(54)
Proceeds from exercise of stock options	565	435	131
Acquisitions of common stock for the treasury	(1,284)	(1,246)	(803)
Other	2	(19)	(48)
Cash Used for Financing	(1,802)	(1,741)	(1,859)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	40	22	(26)
(Decrease) increase in Cash and Cash Equivalents	342	(112)	78
Cash and Cash Equivalents, beginning of year	764	876	798
Cash and Cash Equivalents, end of year	$ 1,106	$ 764	$ 876