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Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2017
Fair Value Measurements [Abstract]  
Fair Value Of Assets And Liabilities Measured And Recorded On Recurring Basis
The following tables summarize the gross fair value of our financial assets and liabilities measured and recorded at fair value on a recurring basis as of June 30, 2017 and December 31, 2016 based on inputs used to derive their fair values:
 
 
 
Fair Value Measurements at
June 30, 2017
 
Fair Value Total
 
Level 1
 
Level 2
Assets:
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
Natural Gas:
 
 
 
 
 
Basis Swaps IFERC/NYMEX
$
9

 
$
9

 
$
—

Swing Swaps IFERC
3

 
1

 
2

Fixed Swaps/Futures
38

 
38

 
—

Forward Physical Swaps
4

 
—

 
4

Power:
 
 
 
 
 
Forwards
13

 
—

 
13

Futures
1

 
1

 
—

Natural Gas Liquids – Forwards/Swaps
74

 
74

 
—

Crude – Futures
9

 
9

 
—

Total commodity derivatives
151

 
132

 
19

Total assets
$
151

 
$
132

 
$
19

Liabilities:
 
 
 
 
 
Interest rate derivatives
$
(201
)
 
$
—

 
$
(201
)
Commodity derivatives:
 
 
 
 
 
Natural Gas:
 
 
 
 
 
Basis Swaps IFERC/NYMEX
(9
)
 
(9
)
 
—

Swing Swaps IFERC
(2
)
 
—

 
(2
)
Fixed Swaps/Futures
(25
)
 
(25
)
 
—

Forward Physical Swaps
(1
)
 
—

 
(1
)
Power:
 
 
 
 
 
Forwards
(12
)
 
—

 
(12
)
Futures
(1
)
 
(1
)
 
—

Natural Gas Liquids – Forwards/Swaps
(68
)
 
(68
)
 
—

Crude – Futures
(5
)
 
(5
)
 
—

Total commodity derivatives
(123
)
 
(108
)
 
(15
)
Total liabilities
$
(324
)
 
$
(108
)
 
$
(216
)
 
 
 
Fair Value Measurements at
December 31, 2016
 
Fair Value Total
 
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
Commodity derivatives:
 
 
 
 
 
 
 
Natural Gas:
 
 
 
 
 
 
 
Basis Swaps IFERC/NYMEX
$
14

 
$
14

 
$
—

 
$
—

Swing Swaps IFERC
2

 
—

 
2

 
—

Fixed Swaps/Futures
96

 
96

 
—

 
—

Forward Physical Swaps
1

 
—

 
1

 
—

Power:


 
 
 
 
 
 
Forwards
4

 
—

 
4

 
—

Futures
1

 
1

 
—

 
—

Options – Calls
1

 
1

 
—

 
—

Natural Gas Liquids – Forwards/Swaps
233

 
233

 
—

 
—

Refined Products – Futures
1

 
1

 
—

 
—

Crude – Futures
9

 
9

 
—

 
—

Total commodity derivatives
362

 
355

 
7

 
—

Total assets
$
362

 
$
355

 
$
7

 
$
—

Liabilities:
 
 
 
 
 
 
 
Interest rate derivatives
$
(193
)
 
$
—

 
$
(193
)
 
$
—

Embedded derivatives in Preferred Units
(1
)
 
—

 
—

 
(1
)
Commodity derivatives:
 
 
 
 
 
 
 
Natural Gas:
 
 
 
 
 
 
 
Basis Swaps IFERC/NYMEX
(11
)
 
(11
)
 
—

 
—

Swing Swaps IFERC
(3
)
 
—

 
(3
)
 
—

Fixed Swaps/Futures
(149
)
 
(149
)
 
—

 
—

Power:


 
 
 
 
 
 
Forwards
(5
)
 
—

 
(5
)
 
—

Futures
(1
)
 
(1
)
 
—

 
—

Natural Gas Liquids – Forwards/Swaps
(273
)
 
(273
)
 
—

 
—

Refined Products – Futures
(17
)
 
(17
)
 
—

 
—

Crude – Futures
(13
)
 
(13
)
 
—

 
—

Total commodity derivatives
(472
)
 
(464
)
 
(8
)
 
—

Total liabilities
$
(666
)
 
$
(464
)
 
$
(201
)
 
$
(1
)