11. Unrealized market value adjustments
For the Three Months Ended December 31
For the Twelve Months Ended December 31
2015
2014
2015
2014
(millions)
$
1
$
(3)
Change in fair value of debt retirement funds
$
2
$
7
(6)
1
Change in fair value of natural gas derivative instruments Change in revaluation of natural gas in storage to net realizable value
(78)
(75)
(1)
(1)
(23)
(12)
$
(6)
$
(3)
$
(99)
$
(80)
12. Natural gas sales and purchases
For the Three Months Ended December 31 2015 2014 Gas Gas
Commodity Marketing Total
(millions)
Commodity Marketing Total
Natural gas sales Natural gas sales to commodity customers
$
81
$
-
$
81
$
97
$
-
$
97
Realized on natural gas derivative instruments
8
41
49
16
60
76
Change in fair value of natural gas derivative instruments
-
(4)
(4)
-
17 77
17
89
37
126
113
190
Natural gas purchases Realized on natural gas derivative instruments
(72)
(34)
(106)
(101)
(56)
(157)
Change in fair value of natural gas derivative instruments Change in revaluation of natural gas in storage to net realizable value
(1)
(1)
(2)
(94)
(1)
(95)
-
(1)
(1)
-
(23) (80)
(23)
(73)
(36)
(109)
(195)
(275)
$
16
$
1
$
17
$
(82)
$
(3)
$
(85)
24
2015/2016 FOURTH QUARTER REPORT
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