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Debt and Reedemable Preferred Securities of Subsidiaries (Tables)
12 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]  
Long-term debt
Long-term debt is composed of the following:
 
Weighted-
Average
Interest
Rate
 
Maturities
 
December 31
 
2016
 
2015
Notes and debentures
4.3%
 
2017 - 2046
 
$
7,101

 
$
6,396

Industrial development revenue bonds
0.2%
 
2018 - 2045
 
264

 
264

Bank loans and other financings in various currencies
5.4%
 
2017 - 2028
 
37

 
44

Total long-term debt
 
 
 
 
7,402

 
6,704

Less current portion
 
 
 
 
963

 
598

Long-term portion
 
 
 
 
$
6,439

 
$
6,106