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Investments, Loans and Long-Term Receivables (Tables)
 12 Months Ended
Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Long Term Investments and Receivables
Components of investments, loans and long-term receivables at December 31 were:
 
 
Millions of Dollars
 
2016

 
2015

 
 
 
 
Equity investments
$
13,102

 
11,977

Loans and long-term receivables
334

 
84

Other investments
98

 
82

 
$
13,534

 
12,143
Summarized Financial Information for Equity Method Investments in Affiliated Companies
Summarized 100 percent financial information for all equity method investments in affiliated companies, combined, was as follows:
 
Millions of Dollars
 
2016

 
2015

 
2014

 
 
 
 
 
 
Revenues
$
30,605

 
33,126

 
57,979

Income before income taxes
3,206

 
3,180

 
4,791

Net income
2,960

 
3,158

 
4,700

Current assets
7,097

 
6,024

 
7,402

Noncurrent assets
50,163

 
46,047

 
41,271

Current liabilities
5,173

 
4,130

 
6,854

Noncurrent liabilities
13,709

 
11,493

 
9,736

Noncontrolling interests
2,260

 
2,404

 
2,584