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Accounting for Derivatives (Tables)
 6 Months Ended
Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments
At June 30, 2016, the Partnership was a party to the following interest rate swaps, which were entered into to offset changes in expected cash flows due to fluctuations in the associated variable interest rates:

Expiration Date
 
Notional Value
(in millions)
May 2018
 
$
300

May 2019
 
100

May 2020
 
100

 
 
$
500
Effect of derivative instruments on consolidated financial position
The following tables present the effect of derivative instruments on our consolidated financial position and results of operations (in thousands):
 
 
 
Fair Value Asset (Liability)
 
Balance Sheet Location
June 30, 2016
 
December 31, 2015
Derivatives designated as hedging instruments:
 
 
 
 
Interest rate swaps
Intangible and other assets, net
$
—

 
$
45

Interest rate swaps
Accrued liabilities
(5,397
)
 
(4,608
)
Interest rate swaps
Other long-term liabilities
(7,005
)
 
(1,421
)
Total derivatives
 
$
(12,402
)
 
$
(5,984
)
Effect of derivative instruments on results of operations
 
Pre-tax Gain (Loss)
Recognized in Other
Comprehensive
Income (Loss) on
Derivatives
 
Location of Pre-tax
Loss
Reclassified from
Accumulated Other
Comprehensive
Income (Loss) into
Income (Loss)
 
Pre-tax Loss
Reclassified from
Accumulated Other
Comprehensive
Income (Loss) into
Income (Loss)
Derivatives designated as cash flow hedges:
 
 
 
 
 
Interest rate swaps
 
 
 
 
 
Three months ended June 30, 2016
$
(3,518
)
 
Interest expense
 
$
(1,159
)
Three months ended June 30, 2015
255

 
Interest expense
 
(2,016
)
Six months ended June 30, 2016
(9,450
)
 
Interest expense
 
$
(2,275
)
Six months ended June 30, 2015
(5,998
)
 
Interest expense
 
(3,691
)