XML 204 R101.htm IDEA: XBRL DOCUMENT v3.2.0.727
Unsecured senior notes (Details 2) - Mar. 31, 2015 - Unsecured senior notes
¥ in Millions, $ in Millions
USD ($)
CNY (¥)
Long-term Debt, Fiscal Year Maturity [Abstract]    
Between 2 to 3 years   ¥ 7,985
Between 4 to 5 years   13,820
Thereafter   27,333
Total senior unsecured notes   49,138
Level 2    
Long-term Debt, Fiscal Year Maturity [Abstract]    
Fair value $ 8,008 ¥ 49,184