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Cash, Cash Equivalents and Restricted Cash
 12 Months Ended
Dec. 31, 2018
Cash and Cash Equivalents [Abstract]  
Cash, Cash Equivalents and Restricted Cash
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
The following table provides a reconciliation of cash, cash equivalents and restricted cash as reported within our Consolidated Statements of Cash Flows:
 
December 31
Millions of dollars
2018
 
2017
 
2016
Cash and cash equivalents as presented in our Consolidated Balance Sheets
$
1,498

 
$
1,196

 
$
1,085

Restricted cash included in prepaid and other current assets (1)
40

 
48

 
45

Restricted cash included in other noncurrent assets (1)
—

 
49

 
110

Cash, cash equivalents and restricted cash as presented in our Consolidated Statements of Cash Flows
$
1,538

 
$
1,293

 
$
1,240

(1)Change in restricted cash resulted in realization of foreign currency translation adjustments of $3 million and ($8 million), respectively, for the twelve months ended December 31, 2018 and 2017 compared to the prior year.