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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Minimum Payments Under Purchase Commitments
As of December 31, 2020, we had committed to make the following minimum payments under our purchase commitments:
20212022202320242025ThereafterTotal
Purchase commitments$400 $127 $69 $31 $24 $96 $747