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Information Relating to the Consolidated Statement of Cash Flows (Tables)
 12 Months Ended
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]  
Schedule of information relating to the consolidated statement of cash flows
 
Year ended December 31
 
 
2018

 
 
2017

 
2016

Net decrease (increase) in operating working capital was composed of the following:
 
 
 
 
 
 
Decrease (increase) in accounts and notes receivable
$
437

 
 
$
(915
)
 
$
(2,121
)
Decrease (increase) in inventories
(424
)
 
 
(267
)
 
603

Decrease (increase) in prepaid expenses and other current assets 1
(149
)
 
 
173

 
829

Increase (decrease) in accounts payable and accrued liabilities 1
(494
)
 
 
998

 
366

Increase (decrease) in income and other taxes payable
(88
)
 
 
531

 
(4
)
Net decrease (increase) in operating working capital
$
(718
)
 
 
$
520

 
$
(327
)
Net cash provided by operating activities includes the following cash payments:
 
 
 
 
 
 
Interest on debt (net of capitalized interest)
$
736

 
 
$
265

 
$
158

Income taxes
4,748

 
 
3,132

 
1,935

Proceeds and deposits related to asset sales and returns of investment consisted of the following gross amounts:
 
 
 
 
 
 
Proceeds and deposits related to asset sales 1
$
2,000

 
 
$
4,930

 
$
3,154

Returns of investment from equity affiliates 2
392

 
 
166

 
322

Proceeds and deposits related to asset sales and returns of investment
$
2,392

 
 
$
5,096

 
$
3,476

Net maturities (investments) of time deposits consisted of the following gross amounts:
 
 
 
 
 
 
Investments in time deposits
$
(950
)
 
 
$
—

 
$
—

Maturities of time deposits
—

 
 
—

 
—

Net maturities of (investments in) time deposits
$
(950
)
 
 
$
—

 
$
—

Net sales (purchases) of marketable securities consisted of the following gross amounts:
 
 
 
 
 
 
Marketable securities purchased
$
(51
)
 
 
$
(3
)
 
$
(9
)
Marketable securities sold
—

 
 
7

 
306

Net sales (purchases) of marketable securities
$
(51
)
 
 
$
4

 
$
297

Net repayment (borrowing) of loans by equity affiliates:
 
 
 
 
 
 
Borrowing of loans by equity affiliates
$
—

 
 
$
(142
)
 
$
(2,341
)
Repayment of loans by equity affiliates
111

 
 
126

 
307

Net repayment (borrowing) of loans by equity affiliates
$
111

 
 
$
(16
)
 
$
(2,034
)
Net borrowings (repayments) of short-term obligations consisted of the following gross and net amounts:
 
 
 
 
 
 
Proceeds from issuances of short-term obligations
$
2,486

 
 
$
5,051

 
$
14,778

Repayments of short-term obligations
(4,136
)
 
 
(8,820
)
 
(12,558
)
Net borrowings (repayments) of short-term obligations with three months or less maturity
3,671

 
 
(1,373
)
 
(90
)
Net borrowings (repayments) of short-term obligations
$
2,021

 
 
$
(5,142
)
 
$
2,130

1  2017 and 2016 adjusted to conform to ASU 2016-18.
 
 
 
 
 
 
2  Per ASU 2016-15.
 
 
 
 
 
 
The table below quantifies the beginning and ending balances of restricted cash and restricted cash equivalents in the Consolidated Balance Sheet:
 
Year ended December 31
 
 
2018

 
 
2017

 
2016

 
2015

Cash and cash equivalents
$
9,342

 
 
$
4,813

 
$
6,988

 
$
11,022

Restricted cash included in "Prepaid expenses and other current assets"
341

 
 
405

 
488

 
196

Restricted cash included in "Deferred charges and other assets"
798

 
 
725

 
938

 
904

Total cash, cash equivalents and restricted cash
$
10,481

 
 
$
5,943

 
$
8,414

 
$
12,122
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
 
 
2018

 
 
2017

 
2016

Additions to properties, plant and equipment *
$
13,384

 
 
$
13,222

 
$
17,742

Additions to investments
65

 
 
25

 
55

Current-year dry hole expenditures
344

 
 
157

 
313

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

 
(1
)
Capital expenditures
13,792

 
 
13,404

 
18,109

Expensed exploration expenditures
523

 
 
666

 
544

Assets acquired through capital lease obligations and other financing obligations
75

 
 
8

 
5

Capital and exploratory expenditures, excluding equity affiliates
14,390

 
 
14,078

 
18,658

Company's share of expenditures by equity affiliates
5,716

 
 
4,743

 
3,770

Capital and exploratory expenditures, including equity affiliates
$
20,106

 
 
$
18,821

 
$
22,428

* 
Excludes non-cash additions of $25 in 2018, $1,183 in 2017 and $56 in 2016.