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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net earnings | $ 534 | $ 489
Provision for losses on accounts receivable | 6 | 4
Deferred income taxes and tax uncertainties | 12 | 3
Depreciation and amortization | 113 | 128
Net gains from sales of assets, net of write-offs | (5) | (14)
Stock-based compensation | 23 | 28
Losses from equity method investment | 0 | 15
Subtotal | 149 | 164
Change in operating assets and liabilities: |  |
Accounts receivable | (118) | (148)
Inventories | 12 | (45)
Prepaid expenses and other assets | (22) | (25)
Trade accounts payable | 100 | 5
Accrued liabilities | (187) | (60)
Income taxes payable, net | (7) | 28
Other non-current liabilities | (11) | (13)
Subtotal | (233) | (258)
Net cash provided by operating activities | 450 | 395
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Additions to property, buildings and equipment and intangibles | (107) | (103)
Proceeds from sales of assets | 14 | 43
Equity method proceeds (investment) | 2 | (14)
Net cash used in investing activities | (91) | (74)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Borrowings under lines of credit | 19 | 22
Payments against lines of credit | (16) | (22)
Payments of long-term debt | (34) | (36)
Proceeds from stock options exercised | 16 | 87
Payments for employee taxes withheld from stock awards | (10) | (29)
Purchase of treasury stock | (400) | (201)
Cash dividends paid | (163) | (155)
Other, net | 2 | 3
Net cash used in financing activities | (586) | (331)
Exchange rate effect on cash and cash equivalents | 4 | (4)
NET CHANGE IN CASH AND CASH EQUIVALENTS | (223) | (14)
Cash and cash equivalents at beginning of year | 538 | 327
Cash and cash equivalents at end of period | $ 315 | $ 313

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- Definition The aggregate amount of adjustments to net income or loss necessary to remove the effects of all items whose cash effects are investing or financing cash flows. The aggregate amount also includes all noncash expenses and income items which reduce or increase net income and are thus added back or deducted when calculating cash provided by or used in operating activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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