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Long-Term Debt and Credit Facilities (Tables)
12 Months Ended
Dec. 31, 2019
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments

Long-term debt consisted of the following at December 31:
  
 
Weighted Average Interest Rate
 
Maturities
 
2019
 
2018
Notes
 
2.2%
 
2021
-
2078
 
$
6,988

 
$
5,820

Commercial paper
 
(0.4)%
 
2020
 
579

 
534

Finance Lease Obligations
 
Various
 
Various
 
20

 

 
 
 
 
 
 
 
 
7,587

 
6,354

Less: Current portion of long-term debt
 
 
 
 
 
 
 
(254
)
 

Total
 
 
 
 
 
 
 
$
7,333

 
$
6,354


Schedule of Maturities of Long-term Debt Excluding such obligations, scheduled maturities of long-term debt and finance leases outstanding as of December 31, 2019, were as follows:  
Years Ended December 31,
2020
$
267

2021
860

2022
903

2023
895

2024
498

Thereafter
3,595