Regulatory Matters (Tables)

6 Months Ended

Jun. 30, 2011

Regulatory Matters (Tables) [Abstract]

Summary of Detroit Edison's PSCR reconciliation filing currently pending with the MPSC

		Net Over/(Under)-Recovery,	PSCR Cost of
PSCR Year	Date Filed	Including Interest	Power Sold
2009	March 2010	$15.6 million	$1.2 billion
2010	March 2011	$(52.6) million	$1.2 billion

Summary of MichCon's GCR reconciliation filing currently pending with the MPSC

		Net Over-Recovery,
GCR Year	Date Filed	Including Interest	GCR Cost of Gas Sold
2009-2010	June 2010	$5.9 million	$1.0 billion
2010-2011	June 2011	$1.0 million	$0.7 billion