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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Operating activities      
Net earnings $ 1,388 $ 859 $ 854
Adjustments to reconcile net earnings to net cash provided by operating activities:      
Depreciation and amortization 587 580 571
Mark-to-market pension and other postretirement benefit plans (gain) loss, net (21) 97 115
Asset impairment charges 1 9 107
Early debt extinguishment and other related costs 0 85 0
Gains from sale of businesses (3) (17) 0
(Benefit from) provision for deferred income taxes (394) 177 107
Changes in operating assets and liabilities, net of effect of acquisitions and divestitures:      
(Increase) decrease in trade receivables (53) (29) 114
(Increase) decrease in inventories (71) 54 (26)
Increase (decrease) in trade payables 123 7 (102)
Pension and other postretirement contributions in excess of expenses (115) (329) (217)
Variable compensation less than expenses 71 17 71
Other items, net 144 (125) 30
Net cash provided by operating activities 1,657 1,385 1,624
Investing activities      
Additions to properties and equipment (649) (626) (652)
Proceeds from sale of businesses and assets 14 41 4
Acquisitions, net of cash acquired (4) (26) (45)
Other items, net (4) (44) 0
Net cash used in investing activities (643) (655) (693)
Financing activities      
Net increase (decrease) in commercial paper and other borrowings (19) (150) 195
Proceeds from borrowings 675 1,848 250
Repayment of borrowings (1,025) (2,126) (950)
Dividends paid to stockholders (296) (272) (238)
Treasury stock purchases (350) (145) (103)
Dividends paid to noncontrolling interests (7) (8) (6)
Proceeds from stock option exercises and other items, net 16 15 8
Net cash used in financing activities (1,006) (838) (844)
Effect of exchange rate changes on cash and cash equivalents 2 (4) (8)
Net change in cash and cash equivalents 10 (112) 79
Cash and cash equivalents at beginning of period 181 293 214
Cash and cash equivalents at end of period $ 191 $ 181 $ 293