Income Taxes (Unrecognized Tax Benefits) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 82	$ 107	$ 111
Additions based on tax positions related to the current year	12	12	15
Additions for tax positions of prior years	9	2	17
Reductions for tax positions of prior years	(10)	(12)	(19)
Pre-acquisition unrecognized tax benefits	0	2
Reductions for expiration of the applicable statute of limitations	(10)	(6)	(7)
Settlements	0	(23)	(8)
Foreign currency translation	2	0	(2)
Ending balance	$ 85	$ 82	$ 107