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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Commitments and Obligations The following table presents these commitments and obligations as of December 31, 2019:
 
 
 
By Period
 
Total
 
Less than
1  year
 
1 to 3
years
 
3 to 5
years
 
More than
5  years
 
(In millions)
Purchase obligations
$
487

 
$
339

 
$
133

 
$
15

 
$
—

Guarantees
68

 
68

 
—

 
—

 
—

Letters of credit
39

 
22

 
13

 
—

 
4

 
$
594

 
$
429

 
$
146

 
$
15

 
$
4