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Financial and Other Derivative Instruments (Tables)
 6 Months Ended
Jun. 30, 2019
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, 2019
 
December 31, 2018
 
Derivative
Assets
 
Derivative Liabilities
 
Derivative
Assets
 
Derivative Liabilities
 
(In millions)
Derivatives designated as hedging instruments
 
 
 
 
 
 
 
Interest rate contracts
$
—

 
$
(15
)
 
$
—

 
$
(3
)
Derivatives not designated as hedging instruments
 
 
 
 
 
 
 
Commodity contracts
 
 
 
 
 
 
 
Natural gas
$
235

 
$
(236
)
 
$
349

 
$
(380
)
Electricity
320

 
(321
)
 
303

 
(285
)
Other
9

 
—

 
7

 
(1
)
Foreign currency exchange contracts
1

 
—

 
4

 
—

Total derivatives not designated as hedging instruments
$
565

 
$
(557
)
 
$
663

 
$
(666
)
 
 
 
 
 
 
 
 
Current
$
449

 
$
(434
)
 
$
563

 
$
(518
)
Noncurrent
116

 
(138
)
 
100

 
(151
)
Total derivatives
$
565

 
$
(572
)
 
$
663

 
$
(669
)

The following table presents the fair value of derivative instruments for DTE Electric:
 
June 30, 2019
 
December 31, 2018
 
(In millions)
FTRs — Other current assets
$
9

 
$
6

Total derivatives not designated as hedging instruments
$
9

 
$
6
Netting Offsets of Derivative Assets
The following table presents net cash collateral offsetting arrangements for DTE Energy:
 
June 30, 2019
 
December 31, 2018
 
(In millions)
Cash collateral netted against Derivative assets
$
—

 
$
(17
)
Cash collateral netted against Derivative liabilities
4

 
—

Cash collateral recorded in Accounts receivable(a)
12

 
10

Cash collateral recorded in Accounts payable(a)
(3
)
 
(6
)
Total net cash collateral posted (received)
$
13

 
$
(13
)
_______________________________________
(a)
Amounts are recorded net by counterparty.
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:
 
June 30, 2019
 
December 31, 2018
 
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
$
235

 
$
(170
)
 
$
65

 
$
349

 
$
(277
)
 
$
72

Electricity
320

 
(236
)
 
84

 
303

 
(252
)
 
51

Other
9

 
—

 
9

 
7

 
(1
)
 
6

Foreign currency exchange contracts
1

 
—

 
1

 
4

 
—

 
4

Total derivative assets
$
565

 
$
(406
)
 
$
159

 
$
663

 
$
(530
)
 
$
133

 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities
 
 
 
 
 
 
 
 
 
 
 
Commodity contracts
 
 
 
 
 
 
 
 
 
 
 
Natural gas
$
(236
)
 
$
170

 
$
(66
)
 
$
(380
)
 
$
272

 
$
(108
)
Electricity
(321
)
 
240

 
(81
)
 
(285
)
 
240

 
(45
)
Other
—

 
—

 
—

 
(1
)
 
1

 
—

Interest rate contracts
(15
)
 
—

 
(15
)
 
(3
)
 
—

 
(3
)
Total derivative liabilities
$
(572
)
 
$
410

 
$
(162
)
 
$
(669
)
 
$
513

 
$
(156
)
Netting Offsets of Derivative Liabilities
The following table presents net cash collateral offsetting arrangements for DTE Energy:
 
June 30, 2019
 
December 31, 2018
 
(In millions)
Cash collateral netted against Derivative assets
$
—

 
$
(17
)
Cash collateral netted against Derivative liabilities
4

 
—

Cash collateral recorded in Accounts receivable(a)
12

 
10

Cash collateral recorded in Accounts payable(a)
(3
)
 
(6
)
Total net cash collateral posted (received)
$
13

 
$
(13
)
_______________________________________
(a)
Amounts are recorded net by counterparty.
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:
 
June 30, 2019
 
December 31, 2018
 
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
$
235

 
$
(170
)
 
$
65

 
$
349

 
$
(277
)
 
$
72

Electricity
320

 
(236
)
 
84

 
303

 
(252
)
 
51

Other
9

 
—

 
9

 
7

 
(1
)
 
6

Foreign currency exchange contracts
1

 
—

 
1

 
4

 
—

 
4

Total derivative assets
$
565

 
$
(406
)
 
$
159

 
$
663

 
$
(530
)
 
$
133

 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities
 
 
 
 
 
 
 
 
 
 
 
Commodity contracts
 
 
 
 
 
 
 
 
 
 
 
Natural gas
$
(236
)
 
$
170

 
$
(66
)
 
$
(380
)
 
$
272

 
$
(108
)
Electricity
(321
)
 
240

 
(81
)
 
(285
)
 
240

 
(45
)
Other
—

 
—

 
—

 
(1
)
 
1

 
—

Interest rate contracts
(15
)
 
—

 
(15
)
 
(3
)
 
—

 
(3
)
Total derivative liabilities
$
(572
)
 
$
410

 
$
(162
)
 
$
(669
)
 
$
513

 
$
(156
)
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, 2019
 
December 31, 2018
 
Derivative Assets
 
Derivative Liabilities
 
Derivative Assets
 
Derivative Liabilities
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
Current
 
Noncurrent
 
(In millions)
Total fair value of derivatives
$
449

 
$
116

 
$
(434
)
 
$
(138
)
 
$
563

 
$
100

 
$
(518
)
 
$
(151
)
Counterparty netting
(336
)
 
(70
)
 
336

 
70

 
(451
)
 
(62
)
 
451

 
62

Collateral adjustment
—

 
—

 
4

 
—

 
(10
)
 
(7
)
 
—

 
—

Total derivatives as reported
$
113

 
$
46

 
$
(94
)
 
$
(68
)
 
$
102

 
$
31

 
$
(67
)
 
$
(89
)
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:
 
 
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,
 
 
2019
 
2018
 
2019
 
2018
 
 
 
 
(In millions)
Commodity contracts
 
 
 
 
 
 
 
 
Natural gas
 
Operating Revenues — Non-utility operations
 
$
24

 
$
(48
)
 
$
9

 
$
(158
)
Natural gas
 
Fuel, purchased power, and gas — non-utility
 
(30
)
 
16

 
40

 
68

Electricity
 
Operating Revenues — Non-utility operations
 
16

 
28

 
(33
)
 
11

Other
 
Operating Revenues — Non-utility operations
 
(1
)
 
2

 
—

 
1

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

 
(3
)
 
4

Total
 
 
 
$
7

 
$
—

 
$
13

 
$
(74
)
Volume of Commodity Contracts
The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of June 30, 2019:
Commodity
 
Number of Units
Natural gas (MMBtu)
 
1,986,388,951

Electricity (MWh)
 
33,786,455

Foreign currency exchange (CAD)
 
91,380,922