Supplementary Quarterly Financial Information (Unaudited ) (Tables)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

DTE Energy

The sum of quarterly earnings per share may not equal year-end amounts, since quarterly computations are based on weighted average common shares outstanding during each quarter.

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Year
	(In millions, except per share amounts)
2021
Operating Revenues	$	3,581	$	3,021	$	3,715	$	4,647	$	14,964
Operating Income	433		242		405		415		1,495
Net Income from Continuing Operations(a)	317		114		55		300		786
Net Income (Loss) from Discontinued Operations	80		65		(33)		5		117
Net Income	397		179		22		305		903
Net Income Attributable to DTE Energy Company	$	397	$	179	$	25	$	306	$	907
Basic Earnings per Share
Continuing Operations	$	1.65	$	0.60	$	0.30	$	1.56	$	4.11
Discontinued Operations	0.40		0.32		(0.17)		0.02		0.57
Total	$	2.05	$	0.92	$	0.13	$	1.58	$	4.68
Diluted Earnings per Share
Continuing Operations	$	1.65	$	0.60	$	0.30	$	1.55	$	4.10
Discontinued Operations	0.40		0.32		(0.17)		0.02		0.57
Total	$	2.05	$	0.92	$	0.13	$	1.57	$	4.67
2020
Operating Revenues	$	2,852	$	2,411	$	3,080	$	3,080	$	11,423
Operating Income	445		263		479		368		1,555
Net Income from Continuing Operations	268		201		370		206		1,045
Net Income from Discontinued Operations	74		76		107		69		326
Net Income	342		277		477		275		1,371
Net Income Attributable to DTE Energy Company	$	340	$	277	$	476	$	275	$	1,368
Basic Earnings per Share
Continuing Operations	$	1.39	$	1.06	$	1.93	$	1.08	$	5.46
Discontinued Operations	0.38		0.38		0.54		0.34		1.63
Total	$	1.77	$	1.44	$	2.47	$	1.42	$	7.09
Diluted Earnings per Share
Continuing Operations	$	1.39	$	1.06	$	1.92	$	1.08	$	5.45
Discontinued Operations	0.37		0.38		0.54		0.34		1.63
Total	$	1.76	$	1.44	$	2.46	$	1.42	$	7.08

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(a)Third Quarter 2021 results include significant one-time items resulting from the separation of DT Midstream, including a loss on debt extinguishment of $376 million following the settlement of intercompany borrowings with DT midstream and optional redemption of DTE Energy long-term debt. Refer to Note 14 to the Consolidated Financial Statements, "Long-Term Debt," for additional information. Third Quarter 2021 results also include a tax benefit of $85 million for the remeasurement of state deferred tax liabilities following the separation of DT Midstream. Refer to Note 10 to the Consolidated Financial Statements, "Income Taxes," for additional information.