Basis of Presentation and Responsibility for Interim Financial Statements - Additional Information (Details) $ in Millions			1 Months Ended
	Apr. 17, 2018 shares	Jan. 01, 2018 USD ($)	Apr. 30, 2018 market	Mar. 31, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from AOCI to retained earnings		$ 215.8
Reduction in prepaid long-term asset		254.3
Deferred tax asset, income tax expense		38.5
Cumulative effect of new accounting principle in period of adoption				$ (214.0)
Subsequent Event
Subsequent Event [Line Items]
Shares issued per predecessor share (in shares) | shares	1
Number of markets in ordinary shares | market			2
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption				$ (214.0)
Retained earnings | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption		$ 1.8