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Acquisitions - Additional Information (Detail)
¥ / shares in Units, £ / shares in Units, $ in Thousands
3 Months Ended
Jan. 15, 2016
GBP (£)
£ / shares
Jan. 15, 2016
USD ($)
Nov. 02, 2015
USD ($)
Jan. 14, 2015
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Nov. 02, 2015
¥ / shares
Nov. 02, 2015
USD ($)
Sep. 30, 2015
JPY (¥)
May. 29, 2015
GBP (£)
May. 29, 2015
USD ($)
Business Acquisition [Line Items]                          
Revenue           $ 844,156 $ 643,174            
Goodwill         $ 3,336,968 3,336,968   $ 1,063,200          
Telecity Group plc [Member]                          
Business Acquisition [Line Items]                          
Consideration transferred (GBP per share) | £ / shares £ 5.725                        
Number of shares issued per share acquired 0.0336 0.0336                      
Consideration transferred £ 2,624,500,000 $ 3,743,587                      
Unvested employee equity awards assumed   1,299                      
Acquisition costs           36,185              
Cash placed in restricted account                       £ 322,851,000 $ 475,689
Revenue         84,439                
Net loss         $ 2,821                
Goodwill   $ 2,745,913                      
Telecity Group plc [Member] | Customer relationships [Member]                          
Business Acquisition [Line Items]                          
Discount rate (percent) 8.50% 8.50%                      
Telecity Group plc [Member] | Trade name [Member]                          
Business Acquisition [Line Items]                          
Discount rate (percent) 9.00% 9.00%                      
Relief of royalty rate (percent) 0.020 0.020                      
Telecity Group plc [Member] | Bridge term loan [Member]                          
Business Acquisition [Line Items]                          
Short-term debt                       £ 875,000,000 $ 1,289,000
Bit-isle [Member]                          
Business Acquisition [Line Items]                          
Revenue           34,204              
Net loss           $ 4,213              
Percentage of outstanding shares including stock options                   97.00%      
Offer price (in jpy per share) | ¥ / shares                 ¥ 922        
Cash consideration for acquisition     $ 275,367                    
Goodwill                   $ 95,444      
Bit-isle [Member] | Customer relationships [Member]                          
Business Acquisition [Line Items]                          
Discount rate (percent)     11.00%                    
Bit-isle [Member] | Trade name [Member]                          
Business Acquisition [Line Items]                          
Discount rate (percent)     12.00%                    
Relief of royalty rate (percent)     0.020                    
Bit-isle [Member] | Bridge term loan [Member]                          
Business Acquisition [Line Items]                          
Loans payable               $ 422,275     ¥ 47,500,000,000    
Nimbo Technologies Inc [Member]                          
Business Acquisition [Line Items]                          
Cash consideration for acquisition       $ 10,000                  
Contingent earn out period (in years)       2 years                  
Goodwill       $ 17,192