Consolidated Condensed Statements of Comprehensive Income (Unaudited) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Condensed Statements of Comprehensive Income [Abstract]
Net income	$ 78	$ 145	$ 370	$ 529
Other comprehensive income (loss):
Net foreign currency translation adjustment	(180)	184	(5)	(27)
Net change in postretirement benefit plans, net of tax benefit of $338, $9, $315 and $27, respectively	(585)	15	(545)	46
Net change in unrealized gains on investment securities, net of tax expense of $0, $3, $5 and $1, respectively	(1)	(3)	(12)	(1)
Other comprehensive income (loss)	(766)	196	(562)	18
Total comprehensive (loss) income	(688)	341	(192)	547
Net foreign currency translation adjustment:
Foreign currency translation loss	(194)	184	(19)	(27)
Foreign currency translation loss included in net income	14	0	14	0
Net foreign currency translation adjustment	(180)	184	(5)	(27)
Net change in postretirement benefit plans, net of tax:
Amortization of prior service costs, net of tax benefit of less than $1 for all periods presented	0	0	1	1
Amortization of net actuarial loss, net of tax benefit of $12, $9, $36 and $27, respectively	20	15	58	45
Prior service cost recognized from curtailment, net of tax benefit of $1	2	0	2	0
Net actuarial loss arising during the period , net of tax benefit of $353	(606)	0	(606)	0
Net change in postretirement benefit plans, net of tax	(585)	15	(545)	46
Net change in unrealized gains on investment securities, net of tax:
Unrealized (losses) gains arising during period, net of tax benefit (expense) of $0, $0, $1 and $(2), respectively	(1)	1	(2)	3
Gains realized during the period, net of tax expense of $0, $3, $6 and $3, respectively	0	(4)	(10)	(4)
Net change in unrealized gains on investment securities, net of tax	$ (1)	$ (3)	$ (12)	$ (1)