Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities
Net income	$ 1,040	$ 991
Adjustments to reconcile to net cash provided by operating activities
Depreciation and amortization	419	419
Pension expense	205	170
Contributions to pension plans	(383)	(341)
Contributions to other postretirement benefits plans	(34)	(150)
Changes in working capital	(318)	(290)
Other-net	48	(110)
Net cash provided by operating activities	977	689
Investing activities
Cash paid for acquisitions of businesses	(554)	(298)
Capital expenditures for property, plant and equipment	(357)	(384)
Sales of short-term investments-net	89	272
Other-net	(35)	1
Net cash used in investing activities	(857)	(409)
Borrowings with original maturities of more than three months
Proceeds	600	352
Payments	(319)	(14)
Payments with original maturities of less than three months-net	(2)	(38)
Deferred financing costs	(63)	0
Cash dividends paid	(384)	(348)
Exercise of equity-based awards	54	66
Repurchase of shares	0	(343)
Excess tax benefit from equity-based compensation	18	0
Other-net	0	(4)
Net cash used in financing activities	(96)	(329)
Effect of foreign exchange rate changes on cash	16	(6)
Total increase (decrease) in cash	40	(55)
Cash at the beginning of the period	385	333
Cash at the end of the period	$ 425	$ 278