Contingencies (Details) $ in Millions		1 Months Ended		3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 24, 2016 case	Mar. 31, 2016 USD ($)	Sep. 30, 2015 appeal	Jun. 30, 2016 USD ($) case	Sep. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) case country_and_territory	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Loss Contingency [Abstract]
Minimum number of countries and territories serving consumers (more than) (in countries and territories) | country_and_territory						200
Range of reasonably possible losses, minimum				$ 0		$ 0
Range of reasonably possible losses, maximum				250		250
Brazilian internal revenue authority, matter 1				141		141
Loss contingency, number of appeals lost (in appeals) | appeal			1
Brazilian internal revenue authority, matter 2				$ 59		$ 59
Fine imposed french competition authority								$ 57
Fine imposed french competition authority - as a result of Sanex acquisition								$ 25
European competition matters - Swiss competition law authority										$ 6
European competition matters - Italian competition law authority									$ 3
Loss contingency accrual, period increase (decrease)							$ 14
Litigation settlement, fine, amount		$ 14
Loss contingency, pending claims, number (in cases) | case				79		79
Loss contingency, new claims filed, number (in cases) | case				29
Loss contingency, claims settled and dismissed, number (in cases) | case	1
Loss contingency, claims dismissed, number (in cases) | case				28
Loss contingency, claims settled, number (in cases) | case				16
Loss contingency, damages sought, approximate value					$ 2,500