Commitments and Contingencies - Litigation (Detail)	3 Months Ended	12 Months Ended
	Jan. 31, 2014 CHF	Jan. 31, 2014 USD ($)	Jul. 31, 2014 Swatch Parties [Member] USD ($)	Jul. 31, 2014 Swatch Parties [Member] CHF	Jul. 31, 2014 Tiffany Parties [Member] USD ($)	Jul. 31, 2014 Tiffany Parties [Member] CHF
Loss Contingencies [Line Items]
Arbitration award expense		$ 480,211,000
Loss Contingency, Damages Paid, Value	402,737,000
Minimum Damage Claim Sought					132,000,000	120,000,000
Maximum Damage Claim Sought					594,000,000	540,000,000
Maximum Damage Claim Sought By Third Party			4,200,000,000	3,800,000,000
Minimum Damage Claim Sought By Third Party			$ 80,000,000	73,000,000