Consolidating Financial Information Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Net Cash Provided by (Used in) Operating Activities	$ 257,118	$ 75,259
Payments to Acquire Property, Plant, and Equipment	(50,295)	(43,564)
Purchase of a business, net of cash acquired (Note 4)	291,551	0
Purchase of available-for-sale debt securities	0	(132,729)
Proceeds from sales of available-for-sale debt securities	1,950	75,000
Other investing activities	(2,236)	(8,667)
Net transactions with related parties, investing	0	0
Net cash used in investing activities	(342,132)	(109,960)
Repurchase of debt (Note 7)	0	(458,172)
Proceeds from borrowings (Note 7)	100,000	0
Repurchase of common stock, including transaction costs (Note 8)	(100,073)	(100,004)
Proceeds from the issuance of common stock	9,379	9,889
Tax withholding paid on behalf of employees for restricted stock units	(4,806)	(6,802)
Other financing activities	(634)	(214)
Net transactions with related parties	0	0
Net cash provided by (used in) financing activities	3,866	(555,303)
Effect of Exchange Rate on Cash and Cash Equivalents	(284)	(2,014)
Net decrease in cash, cash equivalents and restricted cash	(81,432)	(592,018)
Cash, cash equivalents and restricted cash at the beginning of the period	711,382	926,402
Cash, cash equivalents and restricted cash at the end of the period	629,950	334,384
Parent Company
Net Cash Provided by (Used in) Operating Activities	(3,886)	555,303
Payments to Acquire Property, Plant, and Equipment	0	0
Purchase of a business, net of cash acquired (Note 4)	0
Purchase of available-for-sale debt securities	0	0
Proceeds from sales of available-for-sale debt securities	0	0
Other investing activities	0	0
Net transactions with related parties, investing	0	0
Net cash used in investing activities	0	0
Repurchase of debt (Note 7)	0	(458,172)
Proceeds from borrowings (Note 7)	100,000
Repurchase of common stock, including transaction costs (Note 8)	(100,073)	(100,004)
Proceeds from the issuance of common stock	9,379	9,889
Tax withholding paid on behalf of employees for restricted stock units	(4,806)	(6,802)
Other financing activities	(614)	(214)
Net transactions with related parties	0	0
Net cash provided by (used in) financing activities	3,886	(555,303)
Effect of Exchange Rate on Cash and Cash Equivalents	0	0
Net decrease in cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash at the beginning of the period	0	0
Cash, cash equivalents and restricted cash at the end of the period	0	0
Guarantor Subsidiaries
Net Cash Provided by (Used in) Operating Activities	40,598	(566,340)
Payments to Acquire Property, Plant, and Equipment	(43,216)	(37,020)
Purchase of a business, net of cash acquired (Note 4)	0
Purchase of available-for-sale debt securities	0	(132,729)
Proceeds from sales of available-for-sale debt securities	1,950	75,000
Other investing activities	(2,158)	234
Net transactions with related parties, investing	0	110,047
Net cash used in investing activities	(43,424)	15,532
Repurchase of debt (Note 7)	0	0
Proceeds from borrowings (Note 7)	0
Repurchase of common stock, including transaction costs (Note 8)	0	0
Proceeds from the issuance of common stock	0	0
Tax withholding paid on behalf of employees for restricted stock units	0	0
Other financing activities	0	0
Net transactions with related parties	0	345
Net cash provided by (used in) financing activities	0	345
Effect of Exchange Rate on Cash and Cash Equivalents	0	0
Net decrease in cash, cash equivalents and restricted cash	(2,826)	(550,463)
Cash, cash equivalents and restricted cash at the beginning of the period	231,865	629,314
Cash, cash equivalents and restricted cash at the end of the period	229,039	78,851
Non-Guarantor Subsidiaries
Net Cash Provided by (Used in) Operating Activities	220,406	86,296
Payments to Acquire Property, Plant, and Equipment	(7,079)	(6,544)
Purchase of a business, net of cash acquired (Note 4)	291,551
Purchase of available-for-sale debt securities	0	0
Proceeds from sales of available-for-sale debt securities	0	0
Other investing activities	(78)	(8,901)
Net transactions with related parties, investing	0	0
Net cash used in investing activities	(298,708)	(15,445)
Repurchase of debt (Note 7)	0	0
Proceeds from borrowings (Note 7)	0
Repurchase of common stock, including transaction costs (Note 8)	0	0
Proceeds from the issuance of common stock	0	0
Tax withholding paid on behalf of employees for restricted stock units	0	0
Other financing activities	(20)	0
Net transactions with related parties	0	(110,392)
Net cash provided by (used in) financing activities	(20)	(110,392)
Effect of Exchange Rate on Cash and Cash Equivalents	(284)	(2,014)
Net decrease in cash, cash equivalents and restricted cash	(78,606)	(41,555)
Cash, cash equivalents and restricted cash at the beginning of the period	479,517	297,088
Cash, cash equivalents and restricted cash at the end of the period	400,911	255,533
Eliminations and Reclassifications
Net Cash Provided by (Used in) Operating Activities	0	0
Payments to Acquire Property, Plant, and Equipment	0	0
Purchase of a business, net of cash acquired (Note 4)	0
Purchase of available-for-sale debt securities	0	0
Proceeds from sales of available-for-sale debt securities	0	0
Other investing activities	0	0
Net transactions with related parties, investing	0	(110,047)
Net cash used in investing activities	0	(110,047)
Repurchase of debt (Note 7)	0	0
Proceeds from borrowings (Note 7)	0
Repurchase of common stock, including transaction costs (Note 8)	0	0
Proceeds from the issuance of common stock	0	0
Tax withholding paid on behalf of employees for restricted stock units	0	0
Other financing activities	0	0
Net transactions with related parties	0	110,047
Net cash provided by (used in) financing activities	0	110,047
Effect of Exchange Rate on Cash and Cash Equivalents	0	0
Net decrease in cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash at the beginning of the period	0	0
Cash, cash equivalents and restricted cash at the end of the period	$ 0	$ 0