XML 59 R36.htm IDEA: XBRL DOCUMENT v3.6.0.2
Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of Other Income
The following is a summary of DTE Energy's Other income:
 
2016
 
2015
 
2014
 
(In millions)
Income from REF investees
$
75

 
$
83

 
$
78

Equity earnings of equity method investees
68

 
66

 
48

Contract services
21

 
27

 
23

Allowance for equity funds used during construction
21

 
21

 
21

Gains from trading securities
15

 
1

 
14

Other
7

 
11

 
12

 
$
207

 
$
209

 
$
196

The following is a summary of DTE Electric's Other income:
 
2016
 
2015
 
2014
 
(In millions)
Contract services
$
20

 
$
27

 
$
22

Allowance for equity funds used during construction
18

 
20

 
21

Gains from trading securities allocated from DTE Energy
15

 
1

 
14

Equity earnings of equity method investees
2

 
2

 
1

Other
6

 
10

 
4

 
$
61

 
$
60

 
$
62
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in DTE Energy's Accumulated other comprehensive income (loss) by component(a) for the years ended December 31, 2016 and 2015:
 
Net Unrealized Loss on Derivatives
 
Net Unrealized Gain/(Loss) on Investments
 
Benefit Obligations(b)
 
Foreign Currency Translation
 
Total
 
(In millions)
Balance, December 31, 2014
$
(4
)
 
$
(5
)
 
$
(144
)
 
$
(2
)
 
$
(155
)
Other comprehensive income (loss) before reclassifications
—

 
1

 
2

 
(4
)
 
(1
)
Amounts reclassified from Accumulated other comprehensive income
—

 
—

 
11

 
—

 
11

Net current-period Other comprehensive income (loss)
—

 
1


13


(4
)

10

Balance, December 31, 2015
$
(4
)
 
$
(4
)

$
(131
)

$
(6
)

$
(145
)
Other comprehensive loss before reclassifications
—

 
—

 
(3
)
 
—

 
(3
)
Amounts reclassified from Accumulated other comprehensive income
—

 
1

 
14

 
—

 
15

Net current-period Other comprehensive income
—

 
1


11


—


12

Balance, December 31, 2016
$
(4
)
 
$
(3
)

$
(120
)

$
(6
)

$
(133
)
______________________________________
(a)All amounts are net of tax, except for Foreign currency translation.
(b)
The amounts reclassified from Accumulated other comprehensive income (loss) are included in the computation of the net periodic pension and other postretirement benefit costs (see Note 20 to the Consolidated Financial Statements "Retirement Benefits and Trusteed Assets").
The following table summarizes the changes in DTE Electric's Accumulated other comprehensive income (loss) by component(a) for the years ended December 31, 2016 and 2015:
 
Net Unrealized Gain on Investments
 
Benefit Obligations(b)
 
Total
 
(In millions)
Balance, December 31, 2014
$
1

 
$
(27
)
 
$
(26
)
Other comprehensive income before reclassifications
1

 
—

 
1

Transfer of amounts from Accumulated other comprehensive income to affiliate
—

 
27

 
27

Amounts reclassified from Accumulated other comprehensive income
—

 
—

 
—

Net current-period Other comprehensive income
1

 
27

 
28

Balance, December 31, 2015
$
2

 
$
—

 
$
2

Other comprehensive income before reclassifications
—

 
—

 
—

Amounts reclassified from Accumulated other comprehensive income
—

 
—

 
—

Net current-period Other comprehensive income
—

 
—

 
—

Balance, December 31, 2016
$
2

 
$
—

 
$
2

______________________________________
(a)All amounts are net of tax.
(b)
The amounts reclassified from Accumulated other comprehensive income (loss) are included in the computation of the net periodic pension and other postretirement benefit costs (see Note 20 to the Consolidated Financial Statements "Retirement Benefits and Trusteed Assets").
Schedule of Finite-Lived Intangible Assets by Major Class
The Registrants have certain Intangible assets as shown below:
 
 
 
December 31, 2016
 
December 31, 2015
 
Useful Lives
 
Gross Carrying Value
 
Accumulated Amortization
 
Net Carrying Value
 
Gross Carrying Value
 
Accumulated Amortization
 
Net Carrying Value
 
 
 
(In millions)
Intangible assets subject to amortization
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer relationships(a)
40 years(b)
 
$
770

 
$
(5
)
 
$
765

 
$
—

 
$
—

 
$
—

Contract intangibles
6 to 26 years
 
111

 
(65
)
 
46

 
117

 
(62
)
 
55

 
 
 
881

 
(70
)
 
811

 
117

 
(62
)
 
55

 
 
 
 
 
 
 
 
 
 
 
 
 
 
DTE Electric renewable energy credits
(c)
 
30

 
—

 
30

 
38

 
—

 
38

DTE Electric emission allowances
(c)
 
1

 
—

 
1

 
1

 
—

 
1

 
 
 
31

 
—

 
31

 
39

 
—

 
39

Less current DTE Electric intangible assets
 
 
—

 
—

 
—

 
5

 
—

 
5

Long-term intangible assets
 
 
 
 
 
 
 
 
 
 
 
 
 
DTE Electric
 
 
$
31

 
$
—

 
$
31

 
$
34

 
$
—

 
$
34

DTE Energy
 
 
$
912

 
$
(70
)
 
$
842

 
$
151

 
$
(62
)
 
$
89


______________________________________
(a)
In October 2016, DTE Energy acquired midstream natural gas assets that are part of the Gas Storage and Pipelines segment. The intangible assets recorded as a result of the acquisition pertain to existing customer relationships. See Note 4 to the Consolidated Financial Statements, "Acquisitions and Exit Activities," for additional information.
(b)
The useful life of the customer relationship intangible assets is based on the number of years in which the assets are expected to economically contribute to the business. The expected economic benefit incorporates existing customer contracts and expected renewal rates based on the estimated volume and production lives of gas resources in the region.
(c)
Emission allowances and renewable energy credits are charged to expense, using average cost, as the allowances and credits are consumed in the operation of the business.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The following table summarizes DTE Energy's estimated customer relationship and contract intangible amortization expense expected to be recognized during each year through 2021:
 
2017
 
2018
 
2019
 
2020
 
2021
 
(In millions)
Estimated amortization expense
$
26

 
$
26

 
$
26

 
$
24

 
$
21