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Investment securities and fair value disclosure- Fair value hierarchy (Details) - CNY (¥) ¥ in Millions | Mar. 31, 2017 | Mar. 31, 2016
--- | --- | ---
Assets |  |
Investment securities accounted for under the fair value option | ¥ 183 | ¥ 4,622
Recurring basis |  |
Assets |  |
Short-term investments | 3,011 | 4,700
Restricted cash and escrow receivables | 2,655 | 1,346
Investment securities accounted for under the fair value option | 183 | 4,622
Interest rate swaps | 436 |
Assets | 29,547 | 28,863
Liabilities |  |
Forward exchange contracts | 78 | 461
Contingent consideration in relation to investments and acquisitions | 921 | 1,264
Liabilities | 999 | 1,725
Recurring basis | Level 1 |  |
Assets |  |
Short-term investments | 3,011 | 4,700
Restricted cash and escrow receivables | 2,655 | 1,346
Assets | 28,928 | 24,063
Recurring basis | Level 2 |  |
Assets |  |
Interest rate swaps | 436 |
Assets | 436 | 178
Liabilities |  |
Forward exchange contracts | 78 | 461
Liabilities | 78 | 461
Recurring basis | Level 3 |  |
Assets |  |
Investment securities accounted for under the fair value option | 183 | 4,622
Assets | 183 | 4,622
Liabilities |  |
Contingent consideration in relation to investments and acquisitions | 921 | 1,264
Liabilities | 921 | 1,264
Listed equity securities |  |
Assets |  |
Trading securities |  | 771
Available-for-sale securities | 23,262 |
Listed equity securities | Recurring basis |  |
Assets |  |
Trading securities |  | 771
Available-for-sale securities | 23,262 | 17,246
Listed equity securities | Recurring basis | Level 1 |  |
Assets |  |
Trading securities |  | 771
Available-for-sale securities | ¥ 23,262 | 17,246
Financial derivatives |  |
Assets |  |
Trading securities |  | 178
Financial derivatives | Recurring basis |  |
Assets |  |
Trading securities |  | 178
Financial derivatives | Recurring basis | Level 2 |  |
Assets |  |
Trading securities |  | ¥ 178

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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