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Financial and Other Derivative Instruments (Tables)
 6 Months Ended
Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair Value of Derivative Instruments
The following table presents the fair value of derivative instruments for DTE Energy:
 
June 30, 2017
 
December 31, 2016
 
Derivative
Assets
 
Derivative Liabilities
 
Derivative
Assets
 
Derivative Liabilities
 
(In millions)
Derivatives not designated as hedging instruments
 
 
 
 
 
 
 
Commodity Contracts
 
 
 
 
 
 
 
Natural Gas
$
226

 
$
(216
)
 
$
348

 
$
(461
)
Electricity
266

 
(268
)
 
193

 
(189
)
Other
8

 
(3
)
 
2

 
(3
)
Foreign currency exchange contracts
3

 
(2
)
 
6

 
(3
)
Total derivatives not designated as hedging instruments
$
503

 
$
(489
)
 
$
549

 
$
(656
)
 
 
 
 
 
 
 
 
Current
$
355

 
$
(334
)
 
$
447

 
$
(493
)
Noncurrent
148

 
(155
)
 
102

 
(163
)
Total derivatives
$
503

 
$
(489
)
 
$
549

 
$
(656
)

The following table presents the fair value of derivative instruments for DTE Electric:
 
June 30, 2017
 
December 31, 2016
 
(In millions)
FTRs — Other current assets
$
8

 
$
2

Total derivatives not designated as hedging instrument
$
8

 
$
2
Netting Offsets of Derivative Assets and Liabilities
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:
 
June 30, 2017
 
December 31, 2016
 
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
$
226

 
$
(155
)
 
$
71

 
$
348

 
$
(306
)
 
$
42

Electricity
266

 
(207
)
 
59

 
193

 
(157
)
 
36

Other
8

 
—

 
8

 
2

 
—

 
2

Foreign currency exchange contracts
3

 
(2
)
 
1

 
6

 
(5
)
 
1

Total derivative assets
$
503

 
$
(364
)
 
$
139

 
$
549

 
$
(468
)
 
$
81

 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities
 
 
 
 
 
 
 
 
 
 
 
Commodity Contracts
 
 
 
 
 
 
 
 
 
 
 
Natural Gas
$
(216
)
 
$
156

 
$
(60
)
 
$
(461
)
 
$
321

 
$
(140
)
Electricity
(268
)
 
227

 
(41
)
 
(189
)
 
163

 
(26
)
Other
(3
)
 
3

 
—

 
(3
)
 
2

 
(1
)
Foreign currency exchange contracts
(2
)
 
1

 
(1
)
 
(3
)
 
3

 
—

Total derivative liabilities
$
(489
)
 
$
387

 
$
(102
)
 
$
(656
)
 
$
489

 
$
(167
)
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 showing the reconciliation of derivative instruments to DTE Energy's Consolidated Statements of Financial Position:
 
June 30, 2017
 
December 31, 2016
 
Derivative Assets
 
Derivative Liabilities
 
Derivative Assets
 
Derivative Liabilities
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
(In millions)
Total fair value of derivatives
$
355

 
$
148

 
$
(334
)
 
$
(155
)
 
$
447

 
$
102

 
$
(493
)
 
$
(163
)
Counterparty netting
(273
)
 
(90
)
 
273

 
90

 
(396
)
 
(65
)
 
396

 
65

Collateral adjustment
(1
)
 
—

 
22

 
2

 
(4
)
 
(3
)
 
28

 
—

Total derivatives as reported
$
81

 
$
58

 
$
(39
)
 
$
(63
)
 
$
47

 
$
34

 
$
(69
)
 
$
(98
)
Gain (Loss) Recognized in Income on Derivatives
The effect of derivatives not designated as hedging instruments on DTE Energy's Consolidated Statements of Operations is as follows:
Derivatives not Designated as Hedging Instruments
 
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,
 
 
2017
 
2016
 
2017
 
2016
 
 
 
 
(In millions)
Commodity Contracts
 
 
 
 
 
 
 
 
 
 
Natural Gas
 
Operating Revenues — Non-utility operations
 
$
20

 
$
(30
)
 
$
77

 
$
(86
)
Natural Gas
 
Fuel, purchased power, and gas — non-utility
 
(15
)
 
(9
)
 
46

 
32

Electricity
 
Operating Revenues — Non-utility operations
 
13

 
19

 
6

 
(5
)
Other
 
Operating Revenues — Non-utility operations
 
(1
)
 
—

 
(1
)
 
(2
)
Foreign currency exchange contracts
 
Operating Revenues — Non-utility operations
 
(1
)
 
1

 
(1
)
 
(4
)
Total
 
 
 
$
16

 
$
(19
)
 
$
127

 
$
(65
)
Volume of Commodity Contracts
The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of June 30, 2017:
Commodity
 
Number of Units
Natural Gas (MMBtu)
 
1,751,695,227

Electricity (MWh)
 
33,160,985

Oil (Gallons)
 
10,584,000

Foreign Currency Exchange (Canadian dollars)
 
69,543,810