The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Fair value of the amount outstanding under the credit facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Price of a single share of a number of saleable stocks of a company.

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Debt (Narrative) (Details) - USD ($)	3 Months Ended
Debt (Narrative) (Details) - USD ($)	Jun. 29, 2018	Mar. 30, 2018
Debt Instrument [Line Items]
Stock closing price (in dollars per share)	$ 20.65
2.5% Convertible Senior Notes due April 1, 2021
Debt Instrument [Line Items]
If-converted value in excess of principal	$ 116,000,000
2.0% Convertible Senior Notes due August 15, 2021
Debt Instrument [Line Items]
If-converted value in excess of principal	$ 15,000,000
Convertible Debt \| 2.5% Convertible Senior Notes due April 1, 2021
Debt Instrument [Line Items]
Stated interest rate (as a percent)	2.50%
Convertible Debt \| 2.0% Convertible Senior Notes due August 15, 2021
Debt Instrument [Line Items]
Stated interest rate (as a percent)	2.00%
Convertible Debt \| 2.5% Convertible Senior Notes Due April 1, 2021
Debt Instrument [Line Items]
Stated interest rate (as a percent)	2.50%
Convertible Debt \| 2.0% Convertible Senior Notes Due August 15, 2021
Debt Instrument [Line Items]
Stated interest rate (as a percent)	2.00%
Revolving Credit Facility \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,000,000,000.0
Borrowings outstanding	$ 0	$ 0