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Debt and Reedemable Preferred Securities of Subsidiaries (Tables)
12 Months Ended
Dec. 31, 2019
Debt Disclosure [Abstract]  
Long-term debt
Long-term debt is composed of the following:
 
Weighted-
Average
Interest
Rate
 
Maturities
 
December 31
 
2019
 
2018
Notes and debentures
3.5%
 
2020 - 2047
 
$
6,749

 
$
6,756

Industrial development revenue bonds
1.3%
 
2023 - 2045
 
169

 
169

Bank loans and other financings in various currencies
6.8%
 
2020 - 2038
 
54

 
35

Total long-term debt
 
 
 
 
6,972

 
6,960

Less current portion
 
 
 
 
759

 
713

Long-term portion
 
 
 
 
$
6,213

 
$
6,247