Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income	$ 1,925	$ 1,981	$ 1,803
Adjustments to reconcile to net cash provided by operating activities
Depreciation and amortization	929	925	983
Deferred income taxes	(80)	(100)	(382)
Pension and other postretirement benefits expense	235	323	293
Contributions to pension plans	(262)	(330)	(362)
Contributions to other postretirement benefits plans	(30)	(31)	(40)
Excess tax benefit from equity-based compensation	(1)	(1)	(20)
Gain on sale of businesses	0	0	(68)
Changes in working capital
Accounts receivable - net	(170)	5	(205)
Inventory	25	(20)	(152)
Accounts payable	0	(120)	49
Accrued compensation	20	(28)	(32)
Accrued income and other taxes	30	(9)	(73)
Other current assets	(21)	7	73
Other current liabilities	(62)	(76)	8
Other - net	14	(155)	3
Net cash provided by operating activities	2,552	2,371	1,878
Investing activities
Capital expenditures for property, plant and equipment	(497)	(506)	(632)
Cash received from (paid for) acquisitions of businesses, net of cash acquired	1	(72)	2
Sales (purchases) of short-term investments - net	(40)	37	522
Proceeds from sales of businesses	0	1	282
Other - net	7	(35)	(31)
Net cash (used in) provided by investing activities	(529)	(575)	143
Financing activities
Proceeds from borrowings	631	425	0
Payments on borrowings	(653)	(1,027)	(582)
Cash dividends paid	(1,037)	(1,026)	(929)
Exercise of employee stock options	74	52	54
Repurchase of shares	(730)	(682)	(650)
Excess tax benefit from equity-based compensation	1	1	20
Other - net	(6)	(10)	(43)
Net cash used in financing activities	(1,720)	(2,267)	(2,130)
Effect of currency on cash	(28)	(42)	(25)
Total increase (decrease) in cash	275	(513)	(134)
Cash at the beginning of the period	268	781	915
Cash at the end of the period	$ 543	$ 268	$ 781