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Operating Leases
12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Operating Leases Operating Leases
The classification of the Company's operating lease ROU assets and liabilities in the consolidated balance sheets as of December 31, 2020 and 2019, is as follows (in millions):
December 31,
Classification20202019
Operating lease ROU assetsOther noncurrent assets$534 $564 
Operating lease liabilitiesAccounts payable, accrued and other liabilities$152 $129 
Other noncurrent liabilities453 466 
Total operating lease liabilities$605 $595 

Operating lease cost was $210 million (including $30 million ROU assets impairment charges) and $145 million, and variable lease cost was $39 million and $34 million, for the years ended December 31, 2020 and 2019, respectively. Cash paid for amounts included in the measurement of operating lease liabilities included in operating cash flows was $165 million and $139 million for the years ended December 31, 2020 and 2019, respectively. Operating lease ROU assets obtained in exchange for operating lease liabilities was $138 million and $112 million for the years ended December 31, 2020 and 2019, respectively. The weighted average remaining operating lease term was 5.8 years and 5.9 years and the weighted average operating lease discount rate was 3.2% and 3.7% as of December 31, 2020 and 2019, respectively.

Maturities of operating lease liabilities, as of December 31, 2020, are as follows (in millions):
2021$159 
2022129 
2023103 
202478 
202558 
Thereafter138 
Total lease payments665 
Less: Imputed interest(60)
Total operating lease liabilities$605