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Information Relating to the Consolidated Statement of Cash Flows | 12 Months Ended
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Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract] |
Information Relating to the Consolidated Statement of Cash Flows | Information Relating to the Consolidated Statement of Cash Flows
| Year ended December 31 |
| 2017 |  |  |  | 2016 |  |  | 2015 |
Net decrease (increase) in operating working capital was composed of the following: |  |  |  |  |  |
(Increase) decrease in accounts and notes receivable | $ | (915 | ) |  |  | $ | (2,121 | ) |  | $ | 3,631 |
(Increase) decrease in inventories | (267 | ) |  |  | 603 |  |  | 85 |
Decrease in prepaid expenses and other current assets | 252 |  |  |  | 439 |  |  | 713 |
Increase (decrease) in accounts payable and accrued liabilities | 875 |  |  |  | 533 |  |  | (5,769 | )
Increase (decrease) in income and other taxes payable | 531 |  |  |  | (4 | ) |  | (639 | )
Net decrease (increase) in operating working capital | $ | 476 |  |  |  | $ | (550 | ) |  | $ | (1,979 | )
Net cash provided by operating activities includes the following cash payments for interest on debt and for income taxes: |  |  |  |  |  |
Interest on debt (net of capitalized interest) | $ | 265 |  |  |  | $ | 158 |  |  | $ | — |
Income taxes | 3,132 |  |  |  | 1,935 |  |  | 4,645 |
Net sales of marketable securities consisted of the following gross amounts: |  |  |  |  |  |
Marketable securities purchased | $ | (3 | ) |  |  | $ | (9 | ) |  | $ | (6 | )
Marketable securities sold | 7 |  |  |  | 306 |  |  | 128 |
Net sales of marketable securities | $ | 4 |  |  |  | $ | 297 |  |  | $ | 122 |
Net maturities of time deposits consisted of the following gross amounts: |  |  |  |  |  |
Investments in time deposits | $ | — |  |  |  | $ | — |  |  | $ | — |
Maturities of time deposits | — |  |  |  | — |  |  | 8 |
Net maturities of time deposits | $ | — |  |  |  | $ | — |  |  | $ | 8 |
Net (borrowing) repayment of loans by equity affiliates: |  |  |  |  |  |
Borrowing of loans by equity affiliates | $ | (142 | ) |  |  | $ | (2,341 | ) |  | $ | (223 | )
Repayment of loans by equity affiliates | 126 |  |  |  | 307 |  |  | 6 |
Net (borrowing) repayment of loans by equity affiliates | $ | (16 | ) |  |  | $ | (2,034 | ) |  | $ | (217 | )
Net (purchases) sales of other short-term investments: |  |  |  |  |  |
Purchases of other short-term investments | $ | (41 | ) |  |  | $ | (1 | ) |  | $ | (75 | )
Sales of other short-term investments | 9 |  |  |  | 218 |  |  | 119 |
Net (purchases) sales of other short-term investments | $ | (32 | ) |  |  | $ | 217 |  |  | $ | 44 |
Net borrowings (repayments) of short-term obligations consisted of the following gross and net amounts: |  |  |  |  |  |
Proceeds from issuances of short-term obligations | $ | 5,051 |  |  |  | $ | 14,778 |  |  | $ | 13,805 |
Repayments of short-term obligations | (8,820 | ) |  |  | (12,558 | ) |  | (16,379 | )
Net (repayments) borrowings of short-term obligations with three months or less maturity | (1,373 | ) |  |  | (90 | ) |  | 2,239 |
Net (repayments) borrowings of short-term obligations | $ | (5,142 | ) |  |  | $ | 2,130 |  |  | $ | (335 | )
A loan to Tengizchevroil LLP for the development of the Future Growth and Wellhead Pressure Management Project represents the majority of "Net borrowing of loans by equity affiliates" in 2016. The “Net sales of treasury shares” represents the cost of common shares acquired less the cost of shares issued for share-based compensation plans. Purchases totaled $1, $2 and $2 in 2017, 2016 and 2015, respectively. No purchases were made under the company's share repurchase program in 2017, 2016, or 2015. In 2017, 2016 and 2015, “Net (purchases) sales of other short-term investments” generally consisted of restricted cash associated with upstream abandonment activities, tax payments and certain pension fund payments that was invested in cash and short-term securities and reclassified from “Cash and cash equivalents” to “Deferred charges and other assets” on the Consolidated Balance Sheet. The Consolidated Statement of Cash Flows excludes changes to the Consolidated Balance Sheet that did not affect cash. In 2017, an approximate $400 increase in “Deferred credits and other noncurrent obligations” and a corresponding increase to “Properties, plant and equipment, at cost” were considered non-cash transactions and excluded from “Net increase in operating working capital” and “Capital expenditures.” The amount is related to upstream operating agreements outside of the United States. Refer also to Note 2 6, on page 89, for a discussion of revisions to the company’s AROs that also did not involve cash receipts or payments for the three years ending December 31, 2017. The major components of “Capital expenditures” and the reconciliation of this amount to the reported capital and exploratory expenditures, including equity affiliates, are presented in the following table:
| Year ended December 31 |
| 2017 |  |  |  | 2016 |  |  | 2015 |
Additions to properties, plant and equipment * | $ | 13,222 |  |  |  | $ | 17,742 |  |  | $ | 28,213 |
Additions to investments | 25 |  |  |  | 55 |  |  | 555 |
Current-year dry hole expenditures | 157 |  |  |  | 313 |  |  | 736 |
Payments for other liabilities and assets, net | — |  |  |  | (1 | ) |  | — |
Capital expenditures | 13,404 |  |  |  | 18,109 |  |  | 29,504 |
Expensed exploration expenditures | 666 |  |  |  | 544 |  |  | 1,031 |
Assets acquired through capital lease obligations and other financing obligations | 8 |  |  |  | 5 |  |  | 47 |
Capital and exploratory expenditures, excluding equity affiliates | 14,078 |  |  |  | 18,658 |  |  | 30,582 |
Company's share of expenditures by equity affiliates | 4,743 |  |  |  | 3,770 |  |  | 3,397 |
Capital and exploratory expenditures, including equity affiliates | $ | 18,821 |  |  |  | $ | 22,428 |  |  | $ | 33,979 |
* | Excludes noncash additions of $1,183 in 2017, $56 in 2016 and $1,362 in 2015.

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -URI http://asc.fasb.org/topic&trid=2134446 + Details
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- References No definition available. + Details
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