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Financial and Other Derivative Instruments (Tables)
 6 Months Ended
Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair value of derivative instruments
The following tables present the fair value of derivative instruments as of June 30, 2015 and December 31, 2014 for DTE Energy:
 
June 30, 2015
 
December 31, 2014
 
Derivative
Assets
 
Derivative Liabilities
 
Derivative
Assets
 
Derivative Liabilities
 
(In millions)
Derivatives not designated as hedging instruments:
 
 
 
 
 
 
 
Foreign currency exchange contracts
$
7

 
$
(6
)
 
$
4

 
$
(5
)
Commodity Contracts:
 
 
 
 
 

 
 

Natural Gas
251

 
(256
)
 
787

 
(718
)
Electricity
312

 
(305
)
 
342

 
(342
)
Other
37

 
(34
)
 
45

 
(45
)
Total derivatives not designated as hedging instruments:
$
607

 
$
(601
)
 
$
1,178

 
$
(1,110
)
Total derivatives:
 
 
 
 
 
 
 
Current
$
506

 
$
(501
)
 
$
1,083

 
$
(1,041
)
Noncurrent
101

 
(100
)
 
95

 
(69
)
Total derivatives
$
607

 
$
(601
)
 
$
1,178

 
$
(1,110
)

The following table presents the fair value of derivative instruments as of June 30, 2015 and December 31, 2014 for DTE Electric:
 
June 30, 2015
 
December 31, 2014
 
(In millions)
FTRs — Other current assets
$
5

 
$
3

Total derivatives not designated as hedging instrument
$
5

 
$
3
Netting Offsets of Derivative Assets and Liabilities
The following table presents the netting offsets of derivative assets and liabilities for DTE Energy at June 30, 2015 and December 31, 2014:
 
June 30, 2015
 
December 31, 2014
 
Gross Amounts of Recognized Assets (Liabilities)
 
Gross Amounts Offset in the Consolidated Statements of Financial Position
 
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
 
Gross Amounts of Recognized Assets (Liabilities)
 
Gross Amounts Offset in the Consolidated Statements of Financial Position
 
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
 
(In millions)
Derivative assets:
 
 
 
 
 
 
 
 
 
 
 
Commodity Contracts:
 
 
 
 
 
 
 
 
 
 
 
Natural Gas
$
251

 
$
(198
)
 
$
53

 
$
787

 
$
(681
)
 
$
106

Electricity
312

 
(249
)
 
63

 
342

 
(280
)
 
62

Other
37

 
(31
)
 
6

 
45

 
(42
)
 
3

Other derivative contracts (a)
7

 
(4
)
 
3

 
4

 
(3
)
 
1

Total derivative assets
$
607

 
$
(482
)
 
$
125

 
$
1,178

 
$
(1,006
)
 
$
172

 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities:
 
 
 
 
 
 
 
 
 
 
 
Commodity Contracts:
 
 
 
 
 
 
 
 
 
 
 
Natural Gas
$
(256
)
 
$
215

 
$
(41
)
 
$
(718
)
 
$
679

 
$
(39
)
Electricity
(305
)
 
265

 
(40
)
 
(342
)
 
298

 
(44
)
Other
(34
)
 
33

 
(1
)
 
(45
)
 
45

 
—

Other derivative contracts (a)
(6
)
 
4

 
(2
)
 
(5
)
 
3

 
(2
)
Total derivative liabilities
$
(601
)
 
$
517

 
$
(84
)
 
$
(1,110
)
 
$
1,025

 
$
(85
)

_______________________________________
(a)
Primarily includes foreign currency exchange contracts.
Netting Offsets of Derivative Assets and Liabilities Reconciliation to the Statements of Financial Position
The following table presents the netting offsets of derivative assets and liabilities for DTE Energy at June 30, 2015 and December 31, 2014:
 
June 30, 2015
 
December 31, 2014
 
Derivative Assets
 
Derivative Liabilities
 
Derivative Assets
 
Derivative Liabilities
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
(In millions)
Reconciliation of derivative instruments to DTE Energy's Consolidated Statements of Financial Position:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total fair value of derivatives
$
506

 
$
101

 
$
(501
)
 
$
(100
)
 
$
1,083

 
$
95

 
$
(1,041
)
 
$
(69
)
Counterparty netting
(417
)
 
(65
)
 
417

 
65

 
(955
)
 
(51
)
 
955

 
51

Collateral adjustment
—

 
—

 
22

 
13

 
—

 
—

 
9

 
10

Total derivatives as reported
$
89

 
$
36

 
$
(62
)
 
$
(22
)
 
$
128

 
$
44

 
$
(77
)
 
$
(8
)
Gain (Loss) Recognized in Income on Derivative
The effect of derivatives not designated as hedging instruments on DTE Energy's Consolidated Statements of Operations for the three and six months ended June 30, 2015 and 2014 for DTE Energy is as follows:
 
 
Location of Gain
(Loss) Recognized
in Income on Derivatives
 
Gain (Loss) Recognized in
Income on Derivatives for
the Three Months Ended June 30,
 
Gain (Loss) Recognized in
Income on Derivatives for
the Six Months Ended
June 30,
Derivatives not Designated as Hedging Instruments
 
 
2015
 
2014
 
2015
 
2014
 
 
 
 
(In millions)
Foreign currency exchange contracts
 
Operating Revenue
 
$
—

 
$
3

 
$
1

 
$
(1
)
Commodity Contracts:
 
 
 
 
 
 
 
 
 
 
Natural Gas
 
Operating Revenue
 
(4
)
 
155

 
(130
)
 
28

Natural Gas
 
Fuel, purchased power and gas
 
12

 
(9
)
 
33

 
11

Electricity
 
Operating Revenue
 
15

 
(45
)
 
46

 
88

Other
 
Operating Revenue
 
2

 
(3
)
 
—

 
(4
)
Total
 
 
 
$
25

 
$
101

 
$
(50
)
 
$
122
Volume of Commodity Contracts
The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of June 30, 2015:
Commodity
 
Number of Units
Natural Gas (MMBtu)
 
1,077,322,071
Electricity (MWh)
 
27,578,796
Oil (Gallons)
 
25,284,000
Foreign Currency Exchange (Canadian dollars)
 
45,052,786