Acquisitions and Divestitures - Divestitures (Details 1) $ / shares in Units, AUD in Millions, $ in Millions	3 Months Ended							12 Months Ended
	Sep. 30, 2015 USD ($) $ / shares	Sep. 30, 2015 AUD	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of South Pacific laundry detergent business								$ 221	$ 0	$ 0
Gain on sale of South Pacific laundry detergent business								187	0	0
Europe/South Pacific [Member] | Home Care Member
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of South Pacific laundry detergent business	$ 221	AUD 310
Gain on sale of South Pacific laundry detergent business	187							(187)
Aftertax Gain on Sale of South Pacific laundry detergent business	$ 120							120
Impact of Aftertax Gain on Sale of South Pacific laundry detergent business per common share, diluted (in dollars per share) | $ / shares	$ 0.13
MEXICO
Sale of Land in Mexico [Abstract]
First Installment received from the sale of land in Mexico							$ 24
Second Installment received from the sale of land in Mexico						$ 36
Pretax costs related to sale of land in Mexico								0	4	18
Aftertax costs related to sale of land in Mexico			$ 1	$ 1	$ 1			$ 0	$ 3	$ 12