Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operations
Net income	$ 389	$ 272
Adjustments to reconcile income from continuing operations to net cash from operating activities:
Loss from discontinued operations, net of tax		1
Depreciation and amortization	192	194
Deferred income taxes	(33)	9
Stock compensation	20	18
Net periodic pension benefit and OPEB costs	10	31
Other	12	(1)
Changes in balance sheet items
Accounts and other current receivables, net	76	78
Inventories	(56)	(29)
Accounts payable and accrued liabilities	(103)	(262)
Business optimization items	(27)	(43)
Other	(33)	(62)
Cash flows from operations – continuing operations	447	206
Cash flows from operations – discontinued operations		(17)
Cash flows from operations	447	189
Cash flows from investing activities
Capital expenditures	(155)	(123)
Acquisitions and investments, net of cash acquired	(219)	(6)
Divestitures and other investing activities, net		12
Cash flows from investing activities	(374)	(117)
Cash flows from financing activities
Cash dividends on common stock	(87)	(70)
Proceeds from stock issued under employee benefit plans	82	111
Purchases of treasury stock	(522)	(51)
Other	(18)	(27)
Cash flows from financing activities	(545)	(37)
Effect of foreign exchange rate changes on cash and equivalents	25	22
(Decrease) increase in cash and equivalents	(447)	57
Cash and equivalents at beginning of period	3,394	2,801
Cash and equivalents at end of period	$ 2,947	$ 2,858