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Significant equity transactions, restructuring transactions, mergers and acquisitions and equity investments- AutoNavi (Details)
¥ in Millions, $ in Millions
1 Months Ended 12 Months Ended
Apr. 30, 2016
CNY (¥)
Jul. 31, 2014
USD ($)
Jul. 31, 2014
CNY (¥)
May 31, 2013
CNY (¥)
Mar. 31, 2017
CNY (¥)
Mar. 31, 2016
CNY (¥)
Mar. 31, 2015
CNY (¥)
Mar. 31, 2017
USD ($)
Mar. 31, 2017
CNY (¥)
The allocation of the purchase price at the date of acquisition                  
Goodwill           ¥ 81,645 ¥ 41,933 $ 18,221 ¥ 125,420
Total purchase price comprised of:                  
- cash consideration ¥ 28,724       ¥ 41,836 ¥ 3,055 16,291    
- fair value of previously held equity interests 6,376                
Total ¥ 35,100                
Developed technology and patents | Maximum                  
Total purchase price comprised of:                  
Estimated amortization periods         5 years        
User base and customer relationships | Maximum                  
Total purchase price comprised of:                  
Estimated amortization periods         6 years        
Trade names, trademarks and domain names | Maximum                  
Total purchase price comprised of:                  
Estimated amortization periods         20 years        
AutoNavi                  
Acquisition                  
Equity interest on a fully diluted basis (as a percent)       28.00%          
The allocation of the purchase price at the date of acquisition                  
Net assets acquired     ¥ 2,236            
Goodwill     4,380            
Deferred tax assets     72            
Deferred tax liabilities     (284)            
Total     8,295            
Total purchase price comprised of:                  
- cash consideration   $ 1,032 6,348            
- fair value of previously held equity interests     1,947            
Total     ¥ 8,295            
Weighted average amortization period   3 years 3 years            
Gain recognized in relation to the revaluation of previously held equity interest relating to the step acquisition             ¥ 284    
AutoNavi | Maximum                  
Total purchase price comprised of:                  
Estimated amortization periods   4 years 4 years            
AutoNavi | Developed technology and patents                  
The allocation of the purchase price at the date of acquisition                  
Amortizable intangible assets     ¥ 1,387            
AutoNavi | User base and customer relationships                  
The allocation of the purchase price at the date of acquisition                  
Amortizable intangible assets     255            
AutoNavi | Trade names, trademarks and domain names                  
The allocation of the purchase price at the date of acquisition                  
Amortizable intangible assets     ¥ 249            
AutoNavi | Convertible preferred shares                  
Acquisition                  
Purchase consideration, cost method       ¥ 1,285          
AutoNavi | Ordinary Shares                  
Acquisition                  
Purchase consideration, equity method       ¥ 533