Other Comprehensive Income (Loss) (Schedule Of Components Of Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Comprehensive Income (Loss) [Abstract]
Foreign currency translation adjustments, net of income tax expense (credit) ($4, $(7) and $54 in 2011, 2010 and 2009, respectively)	$ (104)	$ (27)	$ 346
Unrealized investment holding losses, net of income tax credit ($4, $2 and $2 in 2011, 2010, and 2009, respectively)	(4)	(7)	(1)
Less:Reclassification adjustment for realized (gains) included in net income, net of income tax expense of $0, $3 and $1in 2011, 2010 and 2009, respectively	(1)	(5)	(1)
(Losses) gains related to pension/retiree plans, net of income tax credits ($335, $56 and $172 in 2011, 2010 and 2009, respectively)	(779)	(90)	(417)
Other comprehensive (loss) income	(888)	(129)	(73)
Net income before non-controlling interests	1,015	871	241
Comprehensive income before non-controlling interests	127	742	168
Less: Comprehensive loss attributable to non-controlling interests	(22)	(16)	(14)
Comprehensive income attributable to the Company	105	726	154
Foreign currency translation adjustments, tax expense	4	(7)	54
Unrealized investment holding losses, net of income tax (credit) expense	4	2	2
Reclassification adjustment for realized losses (gains) included in net income, Tax portion	0	3	1
(Losses) gains related to pension/retiree plans, net of income tax (credit) expense	$ 335	$ 56	$ 172