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Share-Based Compensation - Additional Information (Details) $ / shares in Units, $ in Millions | 12 Months Ended
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Mar. 31, 2018 USD ($) type_of_restricted_share_unit EquityPlan $ / shares shares | Apr. 01, 2017 USD ($) $ / shares | Apr. 02, 2016 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of equity plans (in plans) | EquityPlan | 2 |  |
Outstanding options unvested (in shares) | shares | 664,497 |  |
Outstanding options vested (in shares) | shares | 3,132,123 |  |
Intrinsic value of options exercised | $ 48.0 | $ 30.5 |
Exercise of employee share options | $ 13.7 | $ 8.4 | $ 12.7
Weighted average grant date fair value of option (in dollars per share) | $ / shares | $ 11.62 | $ 13.79 | $ 14.35
Estimated value of future forfeitures | $ 3.0 |  |
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise of employee share options |  | $ 8.3 |
Unrecognized stock based compensation expense | $ 5.1 |  |
Weighted average period of recognition | 1 year 10 months 5 days |  |
Share-based compensation, vesting period | 4 years |  |
Restricted Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized stock based compensation expense | $ 1.6 |  |
Weighted average period of recognition | 3 months 13 days |  |
Share-based compensation, vesting period | 4 years |  |
Fair value of restricted shares vested during a period | $ 4.0 | 6.7 | $ 14.4
Restricted Share Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized stock based compensation expense | $ 65.4 |  |
Weighted average period of recognition | 2 years 6 months 5 days |  |
Types of equity instruments other than options | type_of_restricted_share_unit | 2 |  |
Fair value of restricted shares vested during a period | $ 17.9 | 13.7 | $ 1.1
Restricted Share Units | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation, vesting period | 1 year |  |
Restricted Share Units | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation, vesting period | 4 years |  |
Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized stock based compensation expense | $ 17.5 |  |
Weighted average period of recognition | 2 years 9 months 10 days |  |
Fair value of restricted shares vested during a period | $ 3.6 | $ 10.9 |
Performance Shares | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation, vesting period | 2 years |  |
Potential number of shares that may be earned (as a percent) | 0.00% |  |
Performance Shares | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation, vesting period | 3 years |  |
Potential number of shares that may be earned (as a percent) | 150.00% |  |
Stock Option Plan 2008 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of plans adopted (in plans) | EquityPlan | 1 |  |
Shares authorized for issuance (up to) (in shares) | shares | 23,980,823 |  |
Shares available for grant (in shares) | shares | 0 |  |
Expiration period | 10 years |  |
Omnibus Incentive Plan 2012 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares authorized for issuance (up to) (in shares) | shares | 15,246,000 |  |
Shares available for grant (in shares) | shares | 7,193,763 |  |
Expiration period | 7 years |  |

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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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