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Financial and Other Derivative Instruments (Tables)
 3 Months Ended
Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair value of derivative instruments
The following table presents the fair value of derivative instruments as of March 31, 2016 and December 31, 2015 for DTE Energy:
 
March 31, 2016
 
December 31, 2015
 
Derivative
Assets
 
Derivative Liabilities
 
Derivative
Assets
 
Derivative Liabilities
 
(In millions)
Derivatives not designated as hedging instruments:
 
 
 
 
 
 
 
Foreign currency exchange contracts
$
6

 
$
(4
)
 
$
12

 
$
(7
)
Commodity Contracts:
 
 
 
 
 

 
 

Natural Gas
298

 
(350
)
 
387

 
(383
)
Electricity
377

 
(396
)
 
307

 
(305
)
Other
4

 
(13
)
 
5

 
(10
)
Total derivatives not designated as hedging instruments:
$
685

 
$
(763
)
 
$
711

 
$
(705
)
 
 
 
 
 
 
 
 
Current
$
527

 
$
(545
)
 
$
570

 
$
(521
)
Noncurrent
158

 
(218
)
 
141

 
(184
)
Total derivatives
$
685

 
$
(763
)
 
$
711

 
$
(705
)

The following table presents the fair value of derivative instruments as of March 31, 2016 and December 31, 2015 for DTE Electric:
 
March 31,
2016
 
December 31, 2015
 
(In millions)
FTRs — Other current assets
$
1

 
$
3

Total derivatives not designated as hedging instrument
$
1

 
$
3
Netting Offsets of Derivative Assets and Liabilities
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy at March 31, 2016 and December 31, 2015:
 
March 31, 2016
 
December 31, 2015
 
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
$
298

 
$
(216
)
 
$
82

 
$
387

 
$
(285
)
 
$
102

Electricity
377

 
(299
)
 
78

 
307

 
(232
)
 
75

Other
4

 
(3
)
 
1

 
5

 
(2
)
 
3

Foreign currency exchange contracts
6

 
(5
)
 
1

 
12

 
(9
)
 
3

Total derivative assets
$
685

 
$
(523
)
 
$
162

 
$
711

 
$
(528
)
 
$
183

 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities:
 
 
 
 
 
 
 
 
 
 
 
Commodity Contracts:
 
 
 
 
 
 
 
 
 
 
 
Natural Gas
$
(350
)
 
$
258

 
$
(92
)
 
$
(383
)
 
$
294

 
$
(89
)
Electricity
(396
)
 
327

 
(69
)
 
(305
)
 
253

 
(52
)
Other
(13
)
 
12

 
(1
)
 
(10
)
 
8

 
(2
)
Foreign currency exchange contracts
(4
)
 
3

 
(1
)
 
(7
)
 
7

 
—

Total derivative liabilities
$
(763
)
 
$
600

 
$
(163
)
 
$
(705
)
 
$
562

 
$
(143
)
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 at March 31, 2016 and December 31, 2015:
 
March 31, 2016
 
December 31, 2015
 
Derivative Assets
 
Derivative Liabilities
 
Derivative Assets
 
Derivative Liabilities
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
(In millions)
Total fair value of derivatives
$
527

 
$
158

 
$
(545
)
 
$
(218
)
 
$
570

 
$
141

 
$
(521
)
 
$
(184
)
Counterparty netting
(415
)
 
(101
)
 
415

 
101

 
(441
)
 
(85
)
 
441

 
85

Collateral adjustment
(3
)
 
(4
)
 
63

 
21

 
—

 
(2
)
 
23

 
13

Total derivatives as reported
$
109

 
$
53

 
$
(67
)
 
$
(96
)
 
$
129

 
$
54

 
$
(57
)
 
$
(86
)
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 months ended March 31, 2016 and 2015 for DTE Energy 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 March 31,
 
 
2016
 
2015
 
 
 
 
(In millions)
Foreign currency exchange contracts
 
Operating Revenues — Non-utility operations
 
$
(5
)
 
$
1

Commodity Contracts:
 
 
 
 
 
 
Natural Gas
 
Operating Revenues — Non-utility operations
 
(56
)
 
(126
)
Natural Gas
 
Fuel, purchased power, and gas — non-utility
 
41

 
21

Electricity
 
Operating Revenues — Non-utility operations
 
(24
)
 
31

Other
 
Operating Revenues — Non-utility operations
 
(2
)
 
(2
)
Total
 
 
 
$
(46
)
 
$
(75
)
Volume of Commodity Contracts
The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of March 31, 2016:
Commodity
 
Number of Units
Natural Gas (MMBtu)
 
1,864,037,929

Electricity (MWh)
 
31,063,981

Oil (Gallons)
 
19,992,000

Foreign Currency Exchange (Canadian dollars)
 
84,218,522