Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Fair Value Measurements - Schedule of Long-lived Assets on Nonrecurring (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Asset Impairment Charges [Abstract]
Impairment of property and equipment	$ 11.9	$ 4.9	$ 11.9	$ 4.9
Asset impairment charges	16.3	4.9	16.3	4.9
Nonrecurring \| Significant unobservable inputs (Level 3)
Asset Impairment Charges [Abstract]
Impairment of property and equipment	11.9		11.9	4.9
Asset impairment charges	16.3		16.3
Lease Rights \| Nonrecurring \| Significant unobservable inputs (Level 3)
Asset Impairment Charges [Abstract]
Impairment of intangible assets	3.4		3.4
Customer relationships \| Nonrecurring \| Significant unobservable inputs (Level 3)
Asset Impairment Charges [Abstract]
Impairment of intangible assets	1.0		1.0
Carrying Value Prior to Impairment \| Nonrecurring \| Significant unobservable inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Property and equipment	13.4	5.4	13.4	5.4
Long-lived Assets	18.0		18.0
Carrying Value Prior to Impairment \| Lease Rights \| Nonrecurring \| Significant unobservable inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Intangible assets	3.6		3.6
Carrying Value Prior to Impairment \| Customer relationships \| Nonrecurring \| Significant unobservable inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Intangible assets	1.0		1.0
Fair Value \| Nonrecurring \| Significant unobservable inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Property and equipment	1.5	$ 0.5	1.5	$ 0.5
Long-lived Assets	1.7		1.7
Fair Value \| Lease Rights \| Nonrecurring \| Significant unobservable inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Intangible assets	0.2		0.2
Fair Value \| Customer relationships \| Nonrecurring \| Significant unobservable inputs (Level 3)
Assets, Fair Value Disclosure [Abstract]
Intangible assets	$ 0.0		$ 0.0