Contingencies (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Assessment for 2002 [Member]
Assessment of contingencies, including penalties and accruing interest, reduced	$ 22
Assessment of contingencies, prior to reductions	52
Derivative actions [Member]
Estimated Litigation Liability	4
Brockton [Member]
Litigation Settlement, Amount	62
Insurance Settlements Receivable, Current	60
Litigation settlement amount, paid by company	2
IPI [Member] | Assessment for 2012 [Member]
Assessment of contingencies, including penalties and accruing interest	$ 241
DOJ [Member] | FCPA [Member]
Litigation Settlement, Amount		$ 68
SEC [Member] | FCPA [Member]
Litigation Settlement, Amount		$ 67