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Entry into Merger Agreement - (Details) - Tiffany & Co.
3 Months Ended 12 Months Ended
Jan. 31, 2020
USD ($)
Jan. 31, 2020
USD ($)
Nov. 24, 2019
USD ($)
day
$ / shares
Business Acquisition [Line Items]      
Merger related expenses $ 21,200,000 $ 21,200,000  
LVMH Moet Hennessy - Louis Vuitton SE      
Business Acquisition [Line Items]      
Acquisition share price (USD per share) | $ / shares     $ 135.00
Number of days of extension if conditions are satisfied | day     90
Merger terms, termination fee     $ 575,000,000.0