XML 70 R60.htm IDEA: XBRL DOCUMENT

Short-Term Credit Arrangements and Borrowings (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,025
Amounts Outstanding	853
Net availability	1,172
DTE Energy [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	1,425
Amounts Outstanding	407
Net availability	1,018
Electric [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	300
Amounts Outstanding	254
Net availability	46
Gas [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	300
Amounts Outstanding	192
Net availability	108
Letter of Credit [Member]
Availability under combined facilities
Amounts Outstanding	200
Letter of Credit [Member] \| Unsecured letter of credit, expiring in February 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	100
Letter of Credit [Member] \| Unsecured letter of credit facility expiring in August 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	125
Letter of Credit [Member] \| DTE Energy [Member]
Availability under combined facilities
Amounts Outstanding	200
Letter of Credit [Member] \| DTE Energy [Member] \| Unsecured letter of credit, expiring in February 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	100
Letter of Credit [Member] \| DTE Energy [Member] \| Unsecured letter of credit facility expiring in August 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	125
Letter of Credit [Member] \| Electric [Member]
Availability under combined facilities
Amounts Outstanding	0
Letter of Credit [Member] \| Electric [Member] \| Unsecured letter of credit, expiring in February 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	0
Letter of Credit [Member] \| Electric [Member] \| Unsecured letter of credit facility expiring in August 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	0
Letter of Credit [Member] \| Gas [Member]
Availability under combined facilities
Amounts Outstanding	0
Letter of Credit [Member] \| Gas [Member] \| Unsecured letter of credit, expiring in February 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	0
Letter of Credit [Member] \| Gas [Member] \| Unsecured letter of credit facility expiring in August 2015 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	0
Revolving Credit Facility [Member] \| Unsecured revolving credit facility expiring in April 2018 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	1,800
Revolving Credit Facility [Member] \| DTE Energy [Member] \| Unsecured revolving credit facility expiring in April 2018 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	1,200
Revolving Credit Facility [Member] \| Electric [Member] \| Unsecured revolving credit facility expiring in April 2018 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	300
Revolving Credit Facility [Member] \| Gas [Member] \| Unsecured revolving credit facility expiring in April 2018 [Member]
Availability under combined facilities
Line of Credit Facility, Maximum Borrowing Capacity	300
Commercial Paper [Member]
Availability under combined facilities
Amounts Outstanding	653
Commercial Paper [Member] \| DTE Energy [Member]
Availability under combined facilities
Amounts Outstanding	207
Commercial Paper [Member] \| Electric [Member]
Availability under combined facilities
Amounts Outstanding	254
Commercial Paper [Member] \| Gas [Member]
Availability under combined facilities
Amounts Outstanding	$ 192

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References+ Details