XML 72 R50.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Regulatory Matters (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Regulatory Assets and Liabilities Disclosure [Abstract] |
Schedule of Regulatory Assets | The following are balances and a brief description of the Registrants' Regulatory assets and liabilities at December 31:
| DTE Energy |  | DTE Electric
| 2023 |  | 2022 |  | 2023 |  | 2022
Assets | (In millions)
Recoverable undepreciated costs on retiring plants | $ | 2,736 |  |  | $ | 594 |  |  | $ | 2,736 |  |  | $ | 594 |
Recoverable pension and other postretirement costs |  |  |  |  |  |  |
Pension | 1,421 |  |  | 1,362 |  |  | 1,045 |  |  | 997 |
Other postretirement costs | 163 |  |  | 172 |  |  | 67 |  |  | 60 |
Fermi 2 asset retirement obligation | 952 |  |  | 972 |  |  | 952 |  |  | 972 |
Removal costs asset | 223 |  |  | 19 |  |  | 223 |  |  | 19 |
Enhanced tree trimming program deferred costs | 157 |  |  | 90 |  |  | 157 |  |  | 90 |
Recoverable Michigan income taxes | 133 |  |  | 148 |  |  | 110 |  |  | 121 |
Energy Waste Reduction incentive | 90 |  |  | 88 |  |  | 72 |  |  | 71 |
Recoverable income taxes related to AFUDC equity | 89 |  |  | 76 |  |  | 80 |  |  | 68 |
Accrued PSCR/GCR revenue | 55 |  |  | 450 |  |  | 55 |  |  | 421 |
Deferred environmental costs | 46 |  |  | 46 |  |  | — |  |  | — |
Unamortized loss on reacquired debt | 41 |  |  | 45 |  |  | 31 |  |  | 34 |
Customer360 deferred costs | 38 |  |  | 42 |  |  | 38 |  |  | 42 |
Advanced distribution management system costs | 18 |  |  | 14 |  |  | 18 |  |  | 14 |
Deferred pension costs | 16 |  |  | 63 |  |  | 10 |  |  | 41 |
Nuclear performance evaluation and review committee tracker | 6 |  |  | 26 |  |  | 6 |  |  | 26 |
Other | 133 |  |  | 129 |  |  | 95 |  |  | 70 |
| 6,317 |  |  | 4,336 |  |  | 5,695 |  |  | 3,640 |
Less amount included in Current Assets | (108) |  |  | (450) |  |  | (99) |  |  | (421) |
| $ | 6,209 |  |  | $ | 3,886 |  |  | $ | 5,596 |  |  | $ | 3,219 |
Securitized regulatory assets | $ | 758 |  |  | $ | 206 |  |  | $ | 758 |  |  | $ | 206 |
Schedule of Regulatory Liabilities |
| DTE Energy |  | DTE Electric
| 2023 |  | 2022 |  | 2023 |  | 2022
Liabilities | (In millions)
Refundable federal income taxes | $ | 1,823 |  |  | $ | 1,908 |  |  | $ | 1,463 |  |  | $ | 1,534 |
Removal costs liability | 342 |  |  | 371 |  |  | — |  |  | — |
Negative other postretirement offset | 210 |  |  | 191 |  |  | 142 |  |  | 128 |
Non-service pension and other postretirement costs | 199 |  |  | 154 |  |  | 84 |  |  | 73 |
Accrued GCR refund | 21 |  |  | — |  |  | — |  |  | — |
Renewable energy | 7 |  |  | 21 |  |  | 7 |  |  | 21 |
Other | 72 |  |  | 62 |  |  | 63 |  |  | 55 |
| 2,674 |  |  | 2,707 |  |  | 1,759 |  |  | 1,811 |
Less amount included in Current Liabilities | (71) |  |  | (34) |  |  | (49) |  |  | (33) |
| $ | 2,603 |  |  | $ | 2,673 |  |  | $ | 1,710 |  |  | $ | 1,778 |

X
- References No definition available. + Details
Name: | us-gaap_RegulatoryAssetsAndLiabilitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481878/980-340-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 980 -SubTopic 715 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481691/980-715-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481878/980-340-50-2 + Details
Name: | us-gaap_ScheduleOfRegulatoryAssetsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 405 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481854/980-405-25-1 + Details
Name: | us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration