Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Related party transactions- Transactions with Yahoo (Details) - Yahoo ¥ in Millions, $ in Millions	12 Months Ended		21 Months Ended	87 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2015 CNY (¥)	Sep. 30, 2014	Dec. 31, 2012
TIPLA royalty fee
Amount incurred or disbursed by the Company
Fee		¥ 448
Fee, as a percentage of revenues			1.50%	2.00%
Purchase of patents
Amount incurred or disbursed by the Company
Purchases	$ 24	¥ 144