Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities:
Net income	$ 462	$ 748
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	235	226
Amortization of purchased intangibles	5	3
Cash received from settlement of insurance claims		66
Stock compensation charges	24	23
Earnings of affiliated companies less than (in excess of) dividends received	300	(78)
Deferred tax provision	47	15
Employee benefit payments (in excess of) less than expense	(66)	34
Changes in certain working capital items:
Trade accounts receivable	(49)	(121)
Inventories	12	(79)
Other current assets	(47)	(26)
Accounts payable and other current liabilities, net of restructuring payments	(51)	(83)
Other, net	(110)	(155)
Net cash provided by operating activities	762	573
Cash Flows from Investing Activities:
Capital expenditures	(412)	(532)
Acquisition of business, net of cash received		(148)
Short-term investments - acquisitions	(528)	(883)
Short-term investments - liquidations	341	903
Other, net	(5)	3
Net cash used in investing activities	(604)	(657)
Cash Flows from Financing Activities:
Net repayments of short-term borrowings and current portion of long-term debt	(10)	(10)
Principal payments under capital lease obligations	(1)	(32)
Proceeds from issuance of long-term debt, net	791
Payments to settle interest rate hedges	(18)
Proceeds from the exercise of stock options	16	64
Repurchases of common stock for treasury	(72)
Dividends paid	(114)	(79)
Net cash provided by (used in) financing activities	592	(57)
Effect of exchange rates on cash	79	113
Net increase (decrease) in cash and cash equivalents	829	(28)
Cash and cash equivalents at beginning of period	4,661	4,598
Cash and cash equivalents at end of period	$ 5,490	$ 4,570