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Restructuring Costs Restructuring Costs (Tables)
 3 Months Ended
Mar. 31, 2017
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve Rollforward [Table Text Block]
The following table summarizes our restructuring costs and related liability for the first quarter of 2017.
 
 
Severance and Related Benefit Costs
 
Office-lease Abandonment Costs(1)
 
Relocation Costs
 
Other Associated Costs
 
Total
 
 
(In millions)
Restructuring liability at January 1, 2017
 
$
1

 
$
14

 
$
—

 
$
—

 
$
15

Additions
 
—

 
—

 
1

 
—

 
1

Settlements
 
(1
)
 
(1
)
 
(1
)
 
—

 
(3
)
Revisions
 
—

 
(1
)
 
—

 
—

 
(1
)
Restructuring liability at March 31, 2017
 
$
—

 
$
12

 
$
—

 
$
—

 
$
12

Cumulative costs as of March 31, 2017
 
$
24

 
$
19

 
$
11

 
$
1

 
$
55

Expected total costs as of March 31, 2017
 
$
24

 
$
19

 
$
11

 
$
1

 
$
55


_________________
(1)
The office-lease abandonment liability will be relieved while lease payments are made and sublease income is received over the life of the lease ending 2022.