Supplementary Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

SUPPLEMENTARY QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

Quarterly earnings per share may not equal full year totals, 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)
2013
Operating Revenues	$	2,516	$	2,225	$	2,387	$	2,533	$	9,661
Operating Income	$	410	$	223	$	329	$	241	$	1,203
Net Income Attributable to DTE Energy Company	$	234	$	105	$	198	$	124	$	661
Basic Earnings per Share	$	1.35	$	0.60	$	1.13	$	0.70	$	3.76
Diluted Earnings per Share	$	1.34	$	0.60	$	1.13	$	0.70	$	3.76

2012
Operating Revenues	$	2,239	$	2,013		$	2,190	$	2,349		$	8,791
Operating Income	$	312	$	294		$	406	$	267		$	1,279
Net Income Attributable to DTE Energy Company
Continuing Operations	$	156	$	147		$	226	$	137		$	666
Discontinued Operations	—		(1		)	1		(56		)	(56		)
Net Income Attributable to DTE Energy Company	$	156	$	146		$	227	$	81		$	610
Basic Earnings per Share
Continuing Operations	$	0.91	$	0.87		$	1.31	$	0.79		$	3.89
Discontinued Operations	—		(0.01		)	0.01		(0.32		)	(0.33		)
Total	$	0.91	$	0.86		$	1.32	$	0.47		$	3.56
Diluted Earnings per Share
Continuing Operations	$	0.91	$	0.87		$	1.30	$	0.79		$	3.88
Discontinued Operations	—		(0.01		)	0.01		(0.32		)	(0.33		)
Total	$	0.91	$	0.86		$	1.31	$	0.47		$	3.55