Intangible Assets and Goodwill - Carrying Values of Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2016	Apr. 02, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 501.5	$ 100.5
Accumulated Amortization	47.8	33.1
Net	453.7	67.4
Reacquired rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	400.4	0.0
Accumulated Amortization	9.4	0.0
Net	391.0	0.0
Lease rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	73.2	73.3
Accumulated Amortization	21.6	17.8
Net	51.6	55.5
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23.0	23.0
Accumulated Amortization	16.0	15.1
Net	7.0	7.9
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4.9	4.2
Accumulated Amortization	0.8	0.2
Net	$ 4.1	$ 4.0