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Information Relating to the Consolidated Statement of Cash Flows (Tables)
 12 Months Ended
Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]  
Schedule of information relating to the consolidated statement of cash flows
 
Year ended December 31
 
 
2016

 
 
2015

 
2014

Net increase in operating working capital was composed of the following:
 
 
 
 
 
 
(Increase) decrease in accounts and notes receivable
$
(2,121
)
 
 
$
3,631

 
$
4,491

Decrease (increase) in inventories
603

 
 
85

 
(146
)
Decrease (increase) in prepaid expenses and other current assets
439

 
 
713

 
(407
)
Increase (decrease) in accounts payable and accrued liabilities
533

 
 
(5,769
)
 
(3,737
)
Decrease in income and other taxes payable
(4
)
 
 
(639
)
 
(741
)
Net increase in operating working capital
$
(550
)
 
 
$
(1,979
)
 
$
(540
)
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)
$
158

 
 
$
—

 
$
—

Income taxes
1,935

 
 
4,645

 
10,562

Net sales (purchases) of marketable securities consisted of the following gross amounts:
 
 
 
 
 
 
Marketable securities purchased
$
(9
)
 
 
$
(6
)
 
$
(162
)
Marketable securities sold
306

 
 
128

 
14

Net sales (purchases) of marketable securities
$
297

 
 
$
122

 
$
(148
)
Net maturities of time deposits consisted of the following gross amounts:
 
 
 
 
 
 
Investments in time deposits
$
—

 
 
$
—

 
$
(317
)
Maturities of time deposits
—

 
 
8

 
317

Net maturities of time deposits
$
—

 
 
$
8

 
$
—

Net (borrowing) repayment of loans by equity affiliates:
 
 
 
 
 
 
Borrowing of loans by equity affiliates
$
(2,341
)
 
 
$
(223
)
 
$
(176
)
Repayment of loans by equity affiliates
307

 
 
6

 
316

Net (borrowing) repayment of loans by equity affiliates
$
(2,034
)
 
 
$
(217
)
 
$
140

Net sales (purchases) of other short-term investments:
 
 
 
 
 
 
Purchases of other short-term investments
$
(1
)
 
 
$
(75
)
 
$
(223
)
Sales of other short-term investments
218

 
 
119

 
16

Net sales (purchases) of other short-term investments
$
217

 
 
$
44

 
$
(207
)
Net borrowings (repayments) of short-term obligations consisted of the following gross and net amounts:
 
 
 
 
 
 
Proceeds from issuances of short-term obligations
$
14,778

 
 
$
13,805

 
$
9,070

Repayments of short-term obligations
(12,558
)
 
 
(16,379
)
 
(4,612
)
Net borrowings (repayments) of short-term obligations with three months or less maturity
(90
)
 
 
2,239

 
(1,027
)
Net borrowings (repayments) of short-term obligations
$
2,130

 
 
$
(335
)
 
$
3,431
Capital expenditures
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
 
 
2016

 
 
2015

 
2014

Additions to properties, plant and equipment *
$
17,742

 
 
$
28,213

 
$
34,393

Additions to investments
55

 
 
555

 
526

Current-year dry hole expenditures
313

 
 
736

 
504

Payments for other liabilities and assets, net
(1
)
 
 
—

 
(16
)
Capital expenditures
18,109

 
 
29,504

 
35,407

Expensed exploration expenditures
544

 
 
1,031

 
1,110

Assets acquired through capital lease obligations and other financing obligations
5

 
 
47

 
332

Capital and exploratory expenditures, excluding equity affiliates
18,658

 
 
30,582

 
36,849

Company's share of expenditures by equity affiliates
3,770

 
 
3,397

 
3,467

Capital and exploratory expenditures, including equity affiliates
$
22,428

 
 
$
33,979

 
$
40,316

* 
Excludes noncash additions of $56 in 2016, $1,362 in 2015 and $2,310 in 2014.