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Unsecured senior notes (Tables) - Unsecured senior notes | 12 Months Ended
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Mar. 31, 2017
Unsecured senior notes |
Summary of the unsecured senior notes |
|  | Amounts |  | Effective interest rate |
|  | (in millions of RMB) |  |  |
US$300 million floating rate notes due 2017 |  |  | 2,066 |  |  | 1.69 | %
US$1,000 million 1.625% notes due 2017 |  |  | 6,883 |  |  | 1.77 | %
US$2,250 million 2.500% notes due 2019 |  |  | 15,434 |  |  | 2.67 | %
US$1,500 million 3.125% notes due 2021 |  |  | 10,268 |  |  | 3.26 | %
US$2,250 million 3.600% notes due 2024 |  |  | 15,414 |  |  | 3.68 | %
US$700 million 4.500% notes due 2034 |  |  | 4,760 |  |  | 4.60 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Carrying value |  |  | 54,825 |  |  |  |
Unamortized discount and debt issuance costs |  |  | 298 |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total principal amounts of unsecured senior notes |  |  | 55,123 |  |  |  |
Less: current portion of principal amounts of unsecured senior notes |  |  | (8,957 | ) |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Non-current portion of principal amounts of unsecured senior notes |  |  | 46,166 |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of future principal payments due |
|  | Principal amounts |
|  | (in millions of RMB) |
Within 1 year |  |  | 8,957 |
Between 1 to 2 years |  |  | — |
Between 2 to 3 years |  |  | 15,503 |
Between 3 to 4 years |  |  | — |
Between 4 to 5 years |  |  | 10,336 |
Thereafter |  |  | 20,327 |
​ | ​ | ​ | ​ | ​
|  |  | 55,123 |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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