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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]  
Future Minimum Lease Commitments Under Noncancellable Operating Leases

Future minimum lease commitments under noncancellable operating leases with initial or remaining terms of one year or more as of December 31, 2018, are payable as follows (in millions):

 

2019

 

 

32

 

2020

 

 

25

 

2021

 

 

17

 

2022

 

 

9

 

2023

 

 

6

 

Thereafter

 

 

5

 

Total future lease commitments

 

$

94