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Employee Benefits (Tables)
 6 Months Ended
Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]  
Schedule of net periodic cost (income)
The following table sets forth the benefit cost (income) related to the Company's pension plans for the three and six months ended June 30, 2014 and 2013.
 
Pension Benefit Cost (Income)
 
Three Months Ended June 30,
Six Months Ended June 30,
 
2014
2013
2014
2013
 
(in millions)
Interest cost
$
7

$
6

$
14

$
8

Expected return on plan assets
(9
)
(8
)
(18
)
(11
)
Amortization of net loss
—

—

—

1

Settlement losses
1

—

1

—

Net periodic cost (income)
$
(1
)
$
(2
)
$
(3
)
$
(2
)