- Reconciliation of our Uncertain Tax Positions (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Uncertain tax positions -
Balance January 1	$ 107	$ 119	$ 111
Gross increases in tax positions in current period	15	13	19
Gross increases in tax positions in prior period	0	1	3
Gross decreases in tax positions in prior period	(1)	(12)	(10)
Gross decreases - settlements	0	(5)	0
Gross decreases - statute of limitations expired	(6)	(9)	(4)
Balance December 31	$ 115	$ 107	$ 119