SEGMENT INFORMATION - Product Results (Details 2) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
SEGMENT INFORMATION
NET SALES	$ 901.6	$ 937.5	$ 941.5	$ 962.1	$ 967.0	$ 977.5	$ 1,032.4	$ 1,094.4	$ 3,742.7	$ 4,071.3	$ 4,409.3
Infant Formula
SEGMENT INFORMATION
NET SALES									2,203.9	2,407.1	2,537.0
Children's Nutrition
SEGMENT INFORMATION
NET SALES									1,487.2	1,593.1	1,788.4
Other.
SEGMENT INFORMATION
NET SALES									$ 51.6	$ 71.1	$ 83.9