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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Lessee, Operating Lease, Liability, Maturity
The amounts contractually due on our operating lease liabilities at December 31, 2020 were as follows (in millions):
20212022202320242025ThereafterTotal
Operating lease$22 $18 $18 $17 $15 $20 $110 
Less: Present value discount10 
   Total operating lease liabilities$100