XML 58 R46.htm IDEA: XBRL DOCUMENT v3.19.2
Computation of Earnings Per Common Share - Narratives (Details) - $ / shares
Jul. 27, 2019
Jul. 28, 2018
Sep. 15, 2015
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%    
Debt instrument, convertible, conversion price (per share)     96.89
Class of warrant or right, exercise price of warrants or rights (per warrant)     $ 130.43
Weighted Average | 0.75% Convertible Senior Notes Due 2021      
Shares used in computing earnings per common share:      
Share price (usd per share)   $ 110.46