SEGMENT INFORMATION - Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Information concerning principal geographic areas
Revenues	$ 1,461.0	$ 1,437.6	$ 1,348.5	$ 1,334.2	$ 1,464.5	$ 1,423.2	$ 1,397.2	$ 1,381.7	$ 5,581.3	$ 5,666.6	$ 5,474.7
Long-lived assets	2,382.1				5,676.0				$ 2,382.1	$ 5,676.0
Revenues | Customer Concentration Risk | L Brands
Concentration risk
Concentration Risk, Percentage									10.60%	10.80%	12.00%
United States
Information concerning principal geographic areas
Revenues									$ 4,588.3	$ 4,621.3	$ 4,192.5
Long-lived assets	1,361.1				4,693.1				1,361.1	4,693.1
Canada
Information concerning principal geographic areas
Revenues									352.2	411.3	726.6
Long-lived assets	311.1				261.0				311.1	261.0
Europe, Middle East and Africa
Information concerning principal geographic areas
Revenues									449.1	463.2	411.4
Long-lived assets	696.2				698.6				696.2	698.6
Asia Pacific
Information concerning principal geographic areas
Revenues									121.7	122.0	129.2
Long-lived assets	12.8				22.5				12.8	22.5
Other
Information concerning principal geographic areas
Revenues									70.0	48.8	$ 15.0
Long-lived assets	$ 0.9				$ 0.8				$ 0.9	$ 0.8