Supplementary Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2011

Supplementary Quarterly Financial Information (Unaudited) [Abstract]

Quarterly Financial Information [Text Block]

SUPPLEMENTARY QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

Quarterly earnings per share may not total for the years, 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)
2011
Operating Revenues	$	2,431	$	2,028	$	2,265	$	2,173	$	8,897
Operating Income	$	390	$	288	$	399	$	346	$	1,423
Net Income Attributable to DTE Energy Company (1)	$	176	$	202	$	183	$	150	$	711
Basic Earnings per Share	$	1.04	$	1.19	$	1.08	$	.88	$	4.19
Diluted Earnings per Share	$	1.04	$	1.19	$	1.07	$	.88	$	4.18

2010
Operating Revenues	$	2,453	$	1,792	$	2,139	$	2,173	$	8,557
Operating Income	$	472	$	256	$	386	$	350	$	1,464
Net Income Attributable to DTE Energy Company	$	229	$	86	$	163	$	152	$	630
Basic Earnings per Share	$	1.38	$	.51	$	.97	$	.90	$	3.75
Diluted Earnings per Share	$	1.38	$	.51	$	.96	$	.90	$	3.74

(1) Includes an income tax benefit of $87 million relating to the enactment of the MCIT in the second quarter of 2011.