v2.4.0.8

Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Beginning balance	$ 1,573	$ 1,435	$ 1,251
Additions based on tax positions related to the current year	90	154	87
Additions based on tax positions related to prior years	201	79	75
Additions from acquired subsidiaries	268	0	57
Reductions for tax positions of prior years	(141)	(60)	(22)
Reductions due to expiration of statutes of limitations	(3)	(3)	(5)
Settlements with taxing authorities	(287)	(32)	(8)
Ending balance	$ 1,701	$ 1,573	$ 1,435

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Unrecognized Tax Benefits Increases Resulting From Acquired Subsidiaries

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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