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Leases (Tables)
 12 Months Ended
Dec. 31, 2015
Leases [Abstract]  
Future Minimum Commitments For Capital And Operating Leases Table
Future minimum commitments for capital lease obligations and for operating lease obligations having noncancellable lease terms in excess of one year are as follows:
(In millions)
Capital
Lease
Obligations
 
Operating
Lease
Obligations
2016
$
1

 
$
30

2017
1

 
26

2018
1

 
24

2019
1

 
24

2020
1

 
24

Later years
16

 
30

Sublease rentals
—

 
(1
)
Total minimum lease payments
$
21

 
$
157

Less imputed interest costs
(12
)
 
 
Present value of net minimum lease payments
$
9