Adoption of Accounting Principled Effect on Diluted Shares

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Weighted Average Stock Price

+ References

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Computation of Earnings Per Common Share - Narratives (Details) - $ / shares	6 Months Ended
	Jan. 27, 2018	Jan. 26, 2019	Jul. 28, 2018	Apr. 28, 2018	Jul. 29, 2017	Jul. 30, 2016	Sep. 15, 2015
Shares used in computing earnings per common share:
Adoption of accounting principled effect on diluted shares	177,575
Weighted average stock price (usd per share)	$ 106.11		$ 99.27	$ 110.46
Convertible Note Hedge
Shares used in computing earnings per common share:
Debt instrument, convertible, conversion price (per share)		$ 96.89					$ 96.89
0.75% Convertible Senior Notes Due 2021
Shares used in computing earnings per common share:
Debt, interest rate (in percent)	0.75%	0.75%			0.75%	0.75%
Debt instrument, convertible, conversion price (per share)							96.89
Class of warrant or right, exercise price of warrants or rights (per warrant)		$ 130.43					$ 130.43