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Leases
12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Leases Leases
As discussed in Note A, the Company adopted new guidance on lease accounting on January 1, 2019 on a modified retrospective basis. Total operating lease expense under the previous guidance was $50 for the year ended December 31, 2018.

The components of lease expense for the years ended December 31, 2020 and 2019 were as follows:

20202019
Operating lease costs:
Operating lease cost$52 $49 
Short-term lease cost
Total operating lease costs$57 $53 
Finance lease cost:
     Amortization of right-of-use assets$$
Total finance lease costs$$

Variable operating lease costs were $3 for the years ended December 31, 2020 and December 31, 2019. Interest on finance lease liabilities were less than $1 for the years ended December 31, 2020 and December 31, 2019.
Supplemental cash flow information related to leases was as follows:
20202019
Cash paid for amounts included in the measurement of lease liabilities:
     Operating cash flows from operating leases$58 $51 
     Financing cash flows from finance leases15 
Right-of-use assets obtained in exchange for lease obligations:
     Operating leases$53 $33 

Supplemental balance sheet information related to finance leases was as follows:
20202019
Finance leases:
Property, plant and equipment$28 $27 
Accumulated depreciation(2)(1)
Property, plant and equipment, net$26 $26 
Accrued liabilities$$
Other non-current liabilities10 11 
Total finance lease liabilities$12 $13 
The weighted average remaining lease term and weighted average discount rates for each year were as follows:
20202019
Weighted average remaining lease term:
     Operating leases9.39.5
     Finance leases6.67.0
Weighted average discount rate:
     Operating leases4.0 %4.2 %
     Finance leases3.4 %4.1 %

Maturities of lease liabilities as of December 31, 2020 were as follows:

Operating LeasesFinance Leases
2021$56 $
202245 
202333 
202425 
202520 
Thereafter99 
     Total lease payments278 13 
Less imputed interest(59)(1)
     Total$219 $12 

At December 31, 2020, the Company does not have material lease commitments that have not commenced.
Leases Leases
As discussed in Note A, the Company adopted new guidance on lease accounting on January 1, 2019 on a modified retrospective basis. Total operating lease expense under the previous guidance was $50 for the year ended December 31, 2018.

The components of lease expense for the years ended December 31, 2020 and 2019 were as follows:

20202019
Operating lease costs:
Operating lease cost$52 $49 
Short-term lease cost
Total operating lease costs$57 $53 
Finance lease cost:
     Amortization of right-of-use assets$$
Total finance lease costs$$

Variable operating lease costs were $3 for the years ended December 31, 2020 and December 31, 2019. Interest on finance lease liabilities were less than $1 for the years ended December 31, 2020 and December 31, 2019.
Supplemental cash flow information related to leases was as follows:
20202019
Cash paid for amounts included in the measurement of lease liabilities:
     Operating cash flows from operating leases$58 $51 
     Financing cash flows from finance leases15 
Right-of-use assets obtained in exchange for lease obligations:
     Operating leases$53 $33 

Supplemental balance sheet information related to finance leases was as follows:
20202019
Finance leases:
Property, plant and equipment$28 $27 
Accumulated depreciation(2)(1)
Property, plant and equipment, net$26 $26 
Accrued liabilities$$
Other non-current liabilities10 11 
Total finance lease liabilities$12 $13 
The weighted average remaining lease term and weighted average discount rates for each year were as follows:
20202019
Weighted average remaining lease term:
     Operating leases9.39.5
     Finance leases6.67.0
Weighted average discount rate:
     Operating leases4.0 %4.2 %
     Finance leases3.4 %4.1 %

Maturities of lease liabilities as of December 31, 2020 were as follows:

Operating LeasesFinance Leases
2021$56 $
202245 
202333 
202425 
202520 
Thereafter99 
     Total lease payments278 13 
Less imputed interest(59)(1)
     Total$219 $12 

At December 31, 2020, the Company does not have material lease commitments that have not commenced.