Contingencies (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013
FCPA [Member]
Estimated litigation liability	$ 12
Assessment for 2002 [Member]
Assessment of contingencies, prior to reductions	70
Assessment of contingencies, including penalties and accruing interest, reduced	29
IPI [Member] | Assessment for 2012 [Member]
Assessment of contingencies, including penalties and accruing interest	371
PIS [Member] | Assessment for 2012 [Member]
Assessment of contingencies, including penalties and accruing interest	56
COFINS [Member] | Assessment for 2012 [Member]
Assessment of contingencies, including penalties and accruing interest	$ 257