Comprehensive Income and Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Net Income (Loss)	$ 441		$ (217)		$ 954		$ 228
Foreign currency translation adjustments	65		(13)		96		(35)
Pension and OPEB related adjustments to AOCI	2	[1]	2	[2]	(7)	[3]	15	[3]
Net unrealized gain (loss) on cash flow hedges	(7)	[4]	(10)	[4]	(5)	[5]	(10)	[5]
Reclassification into earnings from cash flow hedges	1	[2]	1	[6]	(2)	[7]	(2)	[7]
Unrealized gain (loss) on investments in auction rate securities	1	[8]	3	[9]	4	[10]	6	[10]
Other comprehensive loss, net of tax	62		(17)
Total Comprehensive Income (Loss)	503		(234)		1,044		206
Pension and OPEB related adjustments to AOCI, tax expense			(1)		3		(5)
Net unrealized gains (losses) on cash flow hedges, tax expense	3		3		(2)		(3)
Reclassification into earnings from cash flow hedges, tax expense	1				(1)
Unrealized gain on investments in auction rate securities, tax expense	2		2		1		4
Common Stockholders' Equity [Member]
Net Income (Loss)	435		(222)		946		223
Foreign currency translation adjustments	62		(12)		93		(30)
Pension and OPEB related adjustments to AOCI	2	[1]	2	[2]	(7)	[3]	15	[3]
Net unrealized gain (loss) on cash flow hedges	(7)	[4]	(10)	[4]	(5)	[5]	(10)	[5]
Reclassification into earnings from cash flow hedges	1	[2]	1	[6]	(2)	[7]	(2)	[7]
Unrealized gain (loss) on investments in auction rate securities	1	[8]	3	[9]	4	[10]	6	[10]
Other comprehensive loss, net of tax	59		(16)
Total Comprehensive Income (Loss)	494		(238)		1,033		206
Noncontrolling Interests [Member]
Net Income (Loss)	6		5		8		5
Foreign currency translation adjustments	3		(1)		3		(5)
Other comprehensive loss, net of tax	3		(1)
Total Comprehensive Income (Loss)	$ 9		$ 4		$ 11

[1] Net of insignificant tax expense.

[2] Net of $1 million tax expense.

[3] Net of $3 tax benefit in 2011 and $5 tax expense in 2010.

[4] Net of $3 million tax benefit.

[5] Net of $2 tax benefit in 2011 and $3 tax benefit in 2010.

[6] Net of insignificant tax benefit.

[7] Net of $1 tax expense in 2011 and insignificant tax benefit in 2010.

[8] Net of $2 million tax benefit.

[9] Net of $2 million tax expense.

[10] Net of $1 tax expense in 2011 and $4 tax expense in 2010.