Joint Ventures to Develop and Market Company's Brands (Parenthetical) (Detail) - LiNing	1 Months Ended
	Oct. 31, 2016
Business Acquisition [Line Items]
Business acquisition completion period	3 years
Equity interest acquisition commencement date	Mar. 31, 2019
Maximum
Business Acquisition [Line Items]
Aggregate percentage of interest in newly registered company in Hong Kong	50.00%
Minimum
Business Acquisition [Line Items]
Aggregate percentage of interest in newly registered company in Hong Kong	30.00%