XML 79 R62.htm IDEA: XBRL DOCUMENT v3.23.2
Fair Value (Reconciliation of Level 3 Assets and Liabilities at Fair Value on a Recurring Basis) (Details) - Recurring - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]        
Net Assets (Liabilities) as of beginning of period $ (98) $ (341) $ (277) $ (215)
Transfers from Level 3 into Level 2     0 5
Total gains (losses)        
Included in earnings 87 (139) 194 (358)
Recorded in Regulatory liabilities 14 28 5 24
Purchases, issuances, and settlements        
Settlements (45) 24 36 116
Net Assets (Liabilities) as of end of period (42) (428) (42) (428)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period 14 (144) 127 (334)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period 14 25 14 25
DTE Electric        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]        
Net Assets (Liabilities) as of beginning of period 1 3 11 9
Total gains (losses)        
Recorded in Regulatory liabilities 14 28 5 24
Purchases, issuances, and settlements        
Settlements (1) (6) (2) (8)
Net Assets (Liabilities) as of end of period 14 25 14 25
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period 14 25 14 25
Natural gas        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]        
Net Assets (Liabilities) as of beginning of period (62) (230) (255) (179)
Transfers from Level 3 into Level 2     0 5
Total gains (losses)        
Included in earnings 11 (175) 162 (347)
Recorded in Regulatory liabilities 0 0 0 0
Purchases, issuances, and settlements        
Settlements (3) 43 39 159
Net Assets (Liabilities) as of end of period (54) (362) (54) (362)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period (3) (145) 90 (274)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period 0 0 0 0
Electricity        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]        
Net Assets (Liabilities) as of beginning of period (38) (117) (33) (45)
Transfers from Level 3 into Level 2     0 0
Total gains (losses)        
Included in earnings 75 33 30 (18)
Recorded in Regulatory liabilities 0 0 0 0
Purchases, issuances, and settlements        
Settlements (41) (12) (1) (33)
Net Assets (Liabilities) as of end of period (4) (96) (4) (96)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period 49 25 68 (39)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period 0 0 0 0
Other        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]        
Net Assets (Liabilities) as of beginning of period 2 6 11 9
Transfers from Level 3 into Level 2     0
Total gains (losses)        
Included in earnings 1 3 2 7
Recorded in Regulatory liabilities 14 28 5 24
Purchases, issuances, and settlements        
Settlements (1) (7) (2) (10)
Net Assets (Liabilities) as of end of period 16 30 16 30
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period (32) (24) (31) (21)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at end of period $ 14 $ 25 $ 14 $ 25