Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments

The Company’s long-term debt outstanding and weighted average interest rates ^(a) of debt outstanding at December 31 were:

	2014			2013
	(In millions)
Mortgage bonds, notes and other
DTE Energy Debt, Unsecured
4.6% due 2016 to 2033	$	1,647		$	1,297
DTE Electric Taxable Debt, Principally Secured
4.5% due 2016 to 2044	4,824			4,286
DTE Electric Tax-Exempt Revenue Bonds (b)
5.2% due 2020 to 2030	330			558
DTE Gas Taxable Debt, Principally Secured
5.2% due 2015 to 2044	1,099			1,029
Other Long-Term Debt, Including Non-Recourse Debt	121			142
	8,021			7,312
Less amount due within one year	(161		)	(694		)
	$	7,860		$	6,618
Securitization bonds
6.6% due 2015	$	105		$	302
Less amount due within one year	(105		)	(197		)
	$	—		$	105
Junior Subordinated Debentures
6.5% due 2061	$	280		$	280
5.25% due 2062	200			200
	$	480		$	480

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(a) Weighted average interest rates as of December 31, 2014 are shown below the description of each category of debt.

(b) DTE Electric Tax-Exempt Revenue Bonds are issued by a public body that loans the proceeds to DTE Electric on terms substantially mirroring the Revenue Bonds.

Schedule of Issued Debt

In 2014, the following debt was issued:

Company	Month Issued	Type	Interest Rate		Maturity	Amount
						(In millions)
DTE Energy	May	Senior Notes (a)	3.50	%	2024	$	350
DTE Electric	June	Mortgage Bonds (a)	3.77	%	2026	100
DTE Electric	June	Mortgage Bonds (a)	4.60	%	2044	150
DTE Electric	July	Mortgage Bonds (a)	3.375	%	2025	350
DTE Electric	July	Mortgage Bonds (a)	4.30	%	2044	350
DTE Energy	November	Senior Notes (a)	2.40	%	2019	300
DTE Gas	December	Mortgage Bonds (a)	4.35	%	2044	150
						$	1,750

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(a) Proceeds were used for the redemption of long-term debt, repayment of short-term borrowings and general corporate purposes.

Schedule of Extinguishment of Debt

In 2014, the following debt was redeemed:

Company	Month	Type	Interest Rate		Maturity	Amount
						(In millions)
DTE Electric	March	Mortgage Bonds	Various		2014	$	13
DTE Electric	March	Securitization Bonds	6.62	%	2014	100
DTE Electric	April	Tax Exempt Revenue Bonds (a)	2.35	%	2024	31
DTE Electric	April	Tax Exempt Revenue Bonds (a)	4.65	%	2028	32
DTE Gas	May	Mortgage Bonds	8.25	%	2014	80
DTE Energy	May	Senior Notes	7.625	%	2014	300
DTE Electric	June	Tax Exempt Revenue Bonds (a)	4.875	%	2029	36
DTE Electric	June	Tax Exempt Revenue Bonds (a)	6.00	%	2036	69
DTE Electric	July	Senior Notes	4.80	%	2015	200
DTE Electric	August	Senior Notes	5.40	%	2014	200
DTE Electric	August	Tax Exempt Revenue Bonds (a)	5.25	%	2029	60
DTE Electric	September	Securitization Bonds	6.62	%	2014	96
DTE Energy	Various	Other Long Term Debt	Various		2014	20
						$	1,237

_______________________________________

(a) DTE Electric Tax Exempt Revenue Bonds are issued by a public body that loans the proceeds to DTE Electric on terms substantially mirroring the Revenue Bonds.

Schedule of Maturities of Long-term Debt

The following table shows the scheduled debt maturities, excluding any unamortized discount or premium on debt:

	2015		2016		2017		2018		2019		2020 and Thereafter		Total
	(In millions)
Amount to mature	$	266	$	465	$	9	$	407	$	427	$	7,046	$	8,620