XML 51 R41.htm IDEA: XBRL DOCUMENT v3.5.0.2
Financial Instruments Cost and Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Oct. 31, 2016
Jan. 31, 2016
Oct. 31, 2015
Jan. 31, 2015
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents $ 1,436.5 $ 1,353.0 $ 1,337.5 $ 1,410.6
Derivative contracts, Amortized Cost [1] 3.0 1.5    
Derivative contracts, Gross unrealized gains [1] 9.6 7.8    
Derivative contracts, Gross unrealized losses [1] (10.3) (7.4)    
Derivative contracts, Fair Value [1] 2.3 1.9    
Amortized Cost 1,928.0 2,310.6    
Gross unrealized gains 15.1 11.1    
Gross unrealized losses (12.2) (11.0)    
Fair Value 1,930.9 2,310.7    
Marketable Securities, Current        
Schedule of Available-for-sale Securities [Line Items]        
Mutual funds, Amortized Cost 44.2 38.8    
Mutual funds, Gross unrealized gains 1.4 0.4    
Mutual funds, Gross unrealized losses 0.0 (1.2)    
Mutual funds, Fair Value 45.6 38.0    
Marketable Securities, Current | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 15.8 40.0    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 (0.1)    
Marketable securities, Fair Value 15.8 39.9    
Marketable Securities, Current | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 22.2 7.3    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 22.2 7.3    
Marketable Securities, Current | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 140.7 190.3    
Marketable securities, Gross unrealized gains 0.4 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 141.1 190.3    
Marketable Securities, Current | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 51.5 141.1    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 51.5 141.1    
Marketable Securities, Current | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 225.7      
Marketable securities, Gross unrealized gains 0.1      
Marketable securities, Gross unrealized losses (0.1)      
Marketable securities, Fair Value 225.7      
Marketable Securities, Current | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost   377.1    
Marketable securities, Gross unrealized gains   0.1    
Marketable securities, Gross unrealized losses   (0.3)    
Marketable securities, Fair Value   376.9    
Marketable Securities, Current | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 7.1 9.7    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 7.1 9.7    
Marketable Securities, Current | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 11.3 20.1    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 11.3 20.1    
Marketable Securities, Current | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 12.1 74.6    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 12.1 74.6    
Marketable Securities, Noncurrent | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 55.5 56.8    
Marketable securities, Gross unrealized gains 0.1 0.1    
Marketable securities, Gross unrealized losses (0.1) 0.0    
Marketable securities, Fair Value 55.5 56.9    
Marketable Securities, Noncurrent | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 58.3 36.5    
Marketable securities, Gross unrealized gains 0.1 0.1    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 58.4 36.6    
Marketable Securities, Noncurrent | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 1.8      
Marketable securities, Gross unrealized gains 0.0      
Marketable securities, Gross unrealized losses 0.0      
Marketable securities, Fair Value 1.8      
Marketable Securities, Noncurrent | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 244.1      
Marketable securities, Gross unrealized gains 0.9      
Marketable securities, Gross unrealized losses (0.2)      
Marketable securities, Fair Value 244.8      
Marketable Securities, Noncurrent | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost   320.9    
Marketable securities, Gross unrealized gains   0.3    
Marketable securities, Gross unrealized losses   (0.8)    
Marketable securities, Fair Value   320.4    
Marketable Securities, Noncurrent | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 8.5 2.9    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 8.5 2.9    
Marketable Securities, Noncurrent | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 12.6 16.9    
Marketable securities, Gross unrealized gains 0.0 0.0    
Marketable securities, Gross unrealized losses 0.0 0.0    
Marketable securities, Fair Value 12.6 16.9    
Marketable Securities, Noncurrent | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Amortized Cost 73.5 98.4    
Marketable securities, Gross unrealized gains 0.1 0.3    
Marketable securities, Gross unrealized losses (0.2) (0.1)    
Marketable securities, Fair Value 73.4 98.6    
Convertible debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Convertible debt securities, Amortized Cost [2] 6.3 2.5    
Convertible debt securities, Gross unrealized gains [2] 2.4 2.0    
Convertible debt securities, Gross unrealized losses [2] (1.3) (1.1)    
Convertible debt securities, Fair Value [2] 7.4 3.4    
Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents 7.5 [3] 8.5 [4]    
Cash equivalents, Fair Value 7.5 [3] 8.5 [4]    
Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents 101.2 [3] 267.6 [4]    
Cash equivalents, Fair Value 101.2 [3] 267.6 [4]    
Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents 11.8 [3] 106.6 [4]    
Cash equivalents, Fair Value 11.8 [3] 106.6 [4]    
Custody cash deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents 19.5 [3] 2.1 [4]    
Cash equivalents, Fair Value 19.5 [3] 2.1 [4]    
Money market funds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents 162.3 [3] 382.4 [4]    
Cash equivalents, Fair Value 162.3 [3] 382.4 [4]    
Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents [4]   5.0    
Cash equivalents, Fair Value [4]   5.0    
U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents 631.5 [3] 103.0 [4]    
Cash equivalents, Fair Value 631.5 [3] 103.0 [4]    
Level 1        
Schedule of Available-for-sale Securities [Line Items]        
Derivative contracts, Fair Value [1] 0.0 0.0    
Fair Value 1,591.1 1,594.4    
Level 1 | Marketable Securities, Current        
Schedule of Available-for-sale Securities [Line Items]        
Mutual funds, Fair Value 45.6 38.0    
Level 1 | Marketable Securities, Current | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 15.8 39.9    
Level 1 | Marketable Securities, Current | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 1 | Marketable Securities, Current | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 141.1 190.3    
Level 1 | Marketable Securities, Current | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 1 | Marketable Securities, Current | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 225.7      
Level 1 | Marketable Securities, Current | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value   376.9    
Level 1 | Marketable Securities, Current | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 7.1 9.7    
Level 1 | Marketable Securities, Current | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 1 | Marketable Securities, Current | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 12.1 74.6    
Level 1 | Marketable Securities, Noncurrent | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 55.5 56.9    
Level 1 | Marketable Securities, Noncurrent | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 1 | Marketable Securities, Noncurrent | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 1.8      
Level 1 | Marketable Securities, Noncurrent | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 244.8      
Level 1 | Marketable Securities, Noncurrent | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value   320.4    
Level 1 | Marketable Securities, Noncurrent | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 8.5 2.9    
Level 1 | Marketable Securities, Noncurrent | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 1 | Marketable Securities, Noncurrent | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 73.4 98.6    
Level 1 | Convertible debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Convertible debt securities, Fair Value [2] 0.0 0.0    
Level 1 | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 7.5 [3] 8.5 [4]    
Level 1 | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 101.2 [3] 267.6 [4]    
Level 1 | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 1 | Custody cash deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 19.5 [3] 2.1 [4]    
Level 1 | Money market funds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 1 | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value [4]   5.0    
Level 1 | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 631.5 [3] 103.0 [4]    
Level 2        
Schedule of Available-for-sale Securities [Line Items]        
Derivative contracts, Fair Value [1] 0.7 1.6    
Fair Value 330.8 712.6    
Level 2 | Marketable Securities, Current        
Schedule of Available-for-sale Securities [Line Items]        
Mutual funds, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Current | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Current | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 22.2 7.3    
Level 2 | Marketable Securities, Current | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Current | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 51.5 141.1    
Level 2 | Marketable Securities, Current | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0      
Level 2 | Marketable Securities, Current | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value   0.0    
Level 2 | Marketable Securities, Current | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Current | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 11.3 20.1    
Level 2 | Marketable Securities, Current | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Noncurrent | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Noncurrent | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 58.4 36.6    
Level 2 | Marketable Securities, Noncurrent | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0      
Level 2 | Marketable Securities, Noncurrent | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0      
Level 2 | Marketable Securities, Noncurrent | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value   0.0    
Level 2 | Marketable Securities, Noncurrent | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Marketable Securities, Noncurrent | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 12.6 16.9    
Level 2 | Marketable Securities, Noncurrent | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 2 | Convertible debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Convertible debt securities, Fair Value [2] 0.0 0.0    
Level 2 | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 2 | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 2 | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 11.8 [3] 106.6 [4]    
Level 2 | Custody cash deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 2 | Money market funds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 162.3 [3] 382.4 [4]    
Level 2 | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value [4]   0.0    
Level 2 | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 3        
Schedule of Available-for-sale Securities [Line Items]        
Derivative contracts, Fair Value [1] 1.6 0.3    
Fair Value 9.0 3.7    
Level 3 | Marketable Securities, Current        
Schedule of Available-for-sale Securities [Line Items]        
Mutual funds, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Current | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Current | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Current | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Current | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Current | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0      
Level 3 | Marketable Securities, Current | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value   0.0    
Level 3 | Marketable Securities, Current | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Current | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0    
Level 3 | Marketable Securities, Current | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Noncurrent | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Noncurrent | Asset backed securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Noncurrent | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0      
Level 3 | Marketable Securities, Noncurrent | Corporate bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0      
Level 3 | Marketable Securities, Noncurrent | Corporate debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value   0.0    
Level 3 | Marketable Securities, Noncurrent | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Noncurrent | Sovereign debt        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Marketable Securities, Noncurrent | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Marketable securities, Fair Value 0.0 0.0    
Level 3 | Convertible debt securities        
Schedule of Available-for-sale Securities [Line Items]        
Convertible debt securities, Fair Value [2] 7.4 3.4    
Level 3 | Agency bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 3 | Certificates of deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 3 | Commercial paper        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 3 | Custody cash deposit        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 3 | Money market funds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value 0.0 [3] 0.0 [4]    
Level 3 | Municipal bonds        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value [4]   0.0    
Level 3 | U.S. government securities        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Fair Value $ 0.0 [3] $ 0.0 [4]    
[1] Included in “Prepaid expenses and other current assets,” “Other assets,” or “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets.
[2] Considered “available-for-sale” and included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets.
[3] Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.
[4] Included in “Cash and cash equivalents” in the accompanying Condensed Consolidated Balance Sheets.