Consolidated Statements of Comprehensive Income (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net income	$ 419	$ 372	$ 994	$ 959
Other comprehensive (loss) income, net of tax:
Unrecognized amounts on retirement benefits, net of tax of $7, $-, $7 and $18	19	(23)	19	23
Foreign currency translation adjustment	(79)	123	(1)	(86)
Unrealized gains (losses) on cash flow hedges, net of tax of $2, $(14), $10 and $(12)	3	(21)	15	(18)
Unrealized (losses) gains on available-for-sale securities, net of tax of $(143), $51, $(323) and $(73)	(216)	77	(487)	(111)
Total other comprehensive (loss) income, net of tax	(273)	156	(454)	(192)
Comprehensive income	146	528	540	767
Comprehensive income attributable to noncontrolling interests	7	8	15	100
Comprehensive income attributable to MEHC	$ 139	$ 520	$ 525	$ 667