Other Income, Net (Tables)
 9 Months Ended
Sep. 30, 2016
Other Income and Expenses [Abstract]  
Interest and Other Income
Other income (expense), net included:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2016
 
2015
 
2016
 
2015
 
 
 
 
 
 
 
 
 
(in millions)
Interest income
$
1

 
$
2

 
$
2

 
$
4

Loss on extinguishment of debt
(73
)
 
—

 
(73
)
 
(52
)
Costs associated with acquisitions
—

 
(11
)
 
—

 
(12
)
Other, net
6

 
(2
)
 
7

 
(7
)
Other expense, net
$
(66
)
 
$
(11
)
 
$
(64
)
 
$
(67
)