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Long-Term Debt
3 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Long-Term Debt
LONG-TERM DEBT

Fair Value of Debt

Market risk associated with our fixed- and variable-rate long-term debt relates to the potential reduction in fair value and negative impact to future earnings, respectively, from an increase in interest rates. In the table below, the aggregate fair value of debt is based primarily on reported market values, recently completed market transactions and estimates based on interest rates, maturities, credit risk and underlying collateral and is classified primarily as Level 2 within the fair value hierarchy.
(in millions)
March 31,
2015
December 31,
2014
Total debt at par value
$
9,261

$
9,469

Unamortized discount, net
(78
)
(90
)
Net carrying amount
$
9,183

$
9,379

Fair value
$
9,600

$
9,800



Covenants

We were in compliance with the covenants in our financing agreements at March 31, 2015.