Financial Instruments (Details 3) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2018	Apr. 01, 2017	Apr. 02, 2016
Information on sale of available-for-sale securities
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	$ 1,161,410	$ 695,030	$ 268,887
Gross realized gains on sale of available-for-sale securities	7,258	6,989	1,248
Gross realized losses on sale of available-for-sale securities	(7,947)	(3,457)	(878)
Net realized gains (losses) on sale of available-for-sale securities	(689)	3,532	370
Amortization of premiums on available-for-sale securities	$ 24,569	$ 29,360	$ 26,613

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- Definition

This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563

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- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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- Definition

The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period.

+ References

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- Definition

This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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- Definition

Available for sale securities other disclosures.

+ References

No definition available.

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