Alibaba Group Condensed Financial Information Operating Data (Detail) (Alibaba Group, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Alibaba Group
Schedule of Equity Method Investments [Line Items]
Revenue	$ 6,734,978	$ 4,082,838	$ 2,344,973
Gross profit	4,909,327	2,764,314	1,557,392
Income from operations	3,103,664	687,632	325,334
Net income	2,847,139	536,050	339,552
Net income attributable to Alibaba Group	$ 2,809,429	$ 484,511	$ 268,004