XML 69 R52.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Financial Instruments - Cost and Fair Value of Financial Instruments (Details) - USD ($) $ in Millions | Jan. 31, 2017 | Jan. 31, 2016 | Jan. 31, 2015 | Jan. 31, 2014
--- | --- | --- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents |  | $ 1,213.1 |  | $ 1,353.0 |  | $ 1,410.6 | $ 1,853.0
Derivative Instruments And Hedges at Amortized Cost |  | 2.2 |  | 1.5 | [1] |  |
Unrealized Gain on Foreign Currency Derivatives |  | 12.3 |  | 7.8 | [1] |  |
Unrealized Loss on Foreign Currency Derivatives |  | (11.7) |  | (7.4) | [1] |  |
Derivative Contracts, Fair Value |  | 2.8 |  | 1.9 | [1] |  |
Amortized Cost Securities |  | 1,903.5 |  | 2,310.6 |  |  |
Unrealized Gain on Securities |  | 17.4 |  | 11.1 |  |  |
Unrealized Loss on Securities |  | (13.6) |  | (11.0) |  |  |
Total |  | 1,907.3 |  | 2,310.7 |  |  |
Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Trading Securities, Cost |  | 44.8 |  | 38.8 |  |  |
Trading Securities, Unrealized Holding Gain |  | 2.5 |  | 0.4 |  |  |
Trading Securities, Unrealized Holding Loss |  | 0.0 |  | (1.2) |  |  |
Trading Securities |  | 47.3 |  | 38.0 |  |  |
Convertible Debt Securities |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Convertible Debt Securities, Amortized Cost |  | 4.9 | [2] | 2.5 | [3] |  |
Convertible Debt Securities, Unrealized Gains |  | 2.3 | [2] | 2.0 | [3] |  |
Convertible Debt Securities, Unrealized Losses |  | (1.6) | [2] | (1.1) | [3] |  |
Convertible Debt Securities, Fair Value |  | 5.6 | [2] | 3.4 | [3] |  |
Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Derivative Contracts, Fair Value |  | 0.0 |  | 0.0 | [1] |  |
Total |  | 1,193.8 |  | 1,594.4 |  |  |
Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Trading Securities |  | 47.3 |  | 38.0 |  |  |
Level 1 | Convertible Debt Securities |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Convertible Debt Securities, Fair Value |  | 0.0 | [2] | 0.0 | [3] |  |
Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Derivative Contracts, Fair Value |  | 1.5 |  | 1.6 | [1] |  |
Total |  | 706.6 |  | 712.6 |  |  |
Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Trading Securities |  | 0.0 |  | 0.0 |  |  |
Level 2 | Convertible Debt Securities |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Convertible Debt Securities, Fair Value |  | 0.0 | [2] | 0.0 | [3] |  |
Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Derivative Contracts, Fair Value |  | 1.3 |  | 0.3 | [1] |  |
Total |  | 6.9 |  | 3.7 |  |  |
Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Trading Securities |  | 0.0 |  | 0.0 |  |  |
Level 3 | Convertible Debt Securities |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Convertible Debt Securities, Fair Value |  | 5.6 | [2] | 3.4 | [3] |  |
Agency bonds | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 13.2 |  | 40.0 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  |  |  | (0.1) |  |  |
Available-for-sale Securities, Fair Value |  | 13.2 |  | 39.9 |  |  |
Agency bonds | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 7.1 |  | 56.8 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.1 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 7.1 |  | 56.9 |  |  |
Agency bonds | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 13.2 |  | 39.9 |  |  |
Agency bonds | Level 1 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 7.1 |  | 56.9 |  |  |
Agency bonds | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Agency bonds | Level 2 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Agency bonds | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Agency bonds | Level 3 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Asset backed securities | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 19.6 |  | 7.3 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 19.6 |  | 7.3 |  |  |
Asset backed securities | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 65.8 |  | 36.5 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.1 |  | 0.1 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 65.9 |  | 36.6 |  |  |
Asset backed securities | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Asset backed securities | Level 1 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Asset backed securities | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 19.6 |  | 7.3 |  |  |
Asset backed securities | Level 2 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 65.9 |  | 36.6 |  |  |
Asset backed securities | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Asset backed securities | Level 3 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Certificates of deposit | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 157.3 |  | 190.3 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 157.3 |  | 190.3 |  |  |
Certificates of deposit | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 157.3 |  | 190.3 |  |  |
Certificates of deposit | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Certificates of deposit | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Commercial paper | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 109.2 |  | 141.1 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 109.2 |  | 141.1 |  |  |
Commercial paper | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Commercial paper | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 109.2 |  | 141.1 |  |  |
Commercial paper | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Corporate debt securities | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 234.7 |  | 377.1 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.1 |  |  |
Available-for-sale, Gross unrealized losses |  | (0.2) |  | (0.3) |  |  |
Available-for-sale Securities, Fair Value |  | 234.5 |  | 376.9 |  |  |
Corporate debt securities | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 172.1 |  | 320.9 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.1 |  | 0.3 |  |  |
Available-for-sale, Gross unrealized losses |  | (0.1) |  | (0.8) |  |  |
Available-for-sale Securities, Fair Value |  | 172.1 |  | 320.4 |  |  |
Corporate debt securities | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 234.5 |  | 376.9 |  |  |
Corporate debt securities | Level 1 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 172.1 |  | 320.4 |  |  |
Corporate debt securities | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Corporate debt securities | Level 2 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Corporate debt securities | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Corporate debt securities | Level 3 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Municipal bonds | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 43.4 |  | 9.7 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 43.4 |  | 9.7 |  |  |
Municipal bonds | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 10.7 |  | 2.9 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 10.7 |  | 2.9 |  |  |
Municipal bonds | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 43.4 |  | 9.7 |  |  |
Municipal bonds | Level 1 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 10.7 |  | 2.9 |  |  |
Municipal bonds | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Municipal bonds | Level 2 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Municipal bonds | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Municipal bonds | Level 3 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Sovereign debt | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 30.0 |  | 20.1 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 30.0 |  | 20.1 |  |  |
Sovereign debt | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 1.5 |  | 16.9 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 1.5 |  | 16.9 |  |  |
Sovereign debt | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Sovereign debt | Level 1 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Sovereign debt | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 30.0 |  | 20.1 |  |  |
Sovereign debt | Level 2 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 1.5 |  | 16.9 |  |  |
Sovereign debt | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Sovereign debt | Level 3 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
U.S. government securities | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 32.3 |  | 74.6 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.0 |  | 0.0 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | 0.0 |  |  |
Available-for-sale Securities, Fair Value |  | 32.3 |  | 74.6 |  |  |
U.S. government securities | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Amortized Cost |  | 48.8 |  | 98.4 |  |  |
Available-for-sale, Gross unrealized gains |  | 0.1 |  | 0.3 |  |  |
Available-for-sale, Gross unrealized losses |  | 0.0 |  | (0.1) |  |  |
Available-for-sale Securities, Fair Value |  | 48.9 |  | 98.6 |  |  |
U.S. government securities | Level 1 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 32.3 |  | 74.6 |  |  |
U.S. government securities | Level 1 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 48.9 |  | 98.6 |  |  |
U.S. government securities | Level 2 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
U.S. government securities | Level 2 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
U.S. government securities | Level 3 | Marketable Securities, Current |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
U.S. government securities | Level 3 | Marketable Securities, Noncurrent |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Available-for-sale Securities, Fair Value |  | 0.0 |  | 0.0 |  |  |
Agency bonds |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents | [4] | 6.0 |  | 8.5 |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 6.0 |  | 8.5 |  |  |
Agency bonds | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 6.0 |  | 8.5 |  |  |
Agency bonds | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  | 0.0 |  |  |
Agency bonds | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  | 0.0 |  |  |
Certificates of deposit |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents |  | 63.1 | [4] | 267.6 | [5] |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 63.1 | [4] | 267.6 | [5] |  |
Certificates of deposit | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 63.1 | [4] | 267.6 | [5] |  |
Certificates of deposit | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 | [5] |  |
Certificates of deposit | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 |  |  |
Commercial paper |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents |  | 207.4 | [4] | 106.6 | [5] |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 207.4 | [4] | 106.6 | [5] |  |
Commercial paper | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 | [5] |  |
Commercial paper | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 207.4 | [4] | 106.6 | [5] |  |
Commercial paper | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 |  |  |
Corporate debt securities |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents | [4] | 40.2 |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 40.2 |  |  |  |  |
Corporate debt securities | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 40.2 |  |  |  |  |
Corporate debt securities | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  |  |  |  |
Corporate debt securities | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  |  |  |  |
Custody cash deposit |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents |  | 3.2 | [4] | 2.1 | [5] |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 3.2 | [4] | 2.1 | [5] |  |
Custody cash deposit | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 3.2 | [4] | 2.1 | [5] |  |
Custody cash deposit | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 | [5] |  |
Custody cash deposit | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 |  |  |
Money market funds |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents |  | 256.5 | [4] | 382.4 | [5] |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 256.5 | [4] | 382.4 | [5] |  |
Money market funds | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 | [5] |  |
Money market funds | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 256.5 | [4] | 382.4 | [5] |  |
Money market funds | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 |  |  |
Municipal bonds |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents |  | 5.0 | [4] | 5.0 | [5] |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 5.0 | [4] | 5.0 | [5] |  |
Municipal bonds | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 5.0 | [4] | 5.0 | [5] |  |
Municipal bonds | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 | [5] |  |
Municipal bonds | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure |  | 0.0 | [4] | 0.0 |  |  |
Sovereign debt |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents | [4] | 15.0 |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 15.0 |  |  |  |  |
Sovereign debt | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  |  |  |  |
Sovereign debt | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 15.0 |  |  |  |  |
Sovereign debt | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  |  |  |  |
U.S. government securities |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash equivalents | [4] | 309.5 |  | 103.0 |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 309.5 |  | 103.0 |  |  |
U.S. government securities | Level 1 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 309.5 |  | 103.0 |  |  |
U.S. government securities | Level 2 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | 0.0 |  | 0.0 |  |  |
U.S. government securities | Level 3 |  |  |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | [4] | $ 0.0 |  | $ 0.0 |  |  |
[1] | Included in “Prepaid expenses and other current assets,” "Other assets," or “Other accrued liabilities” in the accompanying Consolidated Balance Sheets.
[2] | Considered "available for sale" and included in "Other assets" in the accompanying Consolidated Balance Sheets.
[3] | Considered "available for sale" securities and included in "Other assets" in the accompanying Consolidated Balance Sheets.
[4] | Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.
[5] | Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.

X
- Definition Amortized Cost Securities + References No definition available. + Details
Name: | adsk_AmortizedCostSecurities
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Convertible Debt Securities, Amortized Cost + References No definition available. + Details
Name: | adsk_ConvertibleDebtSecuritiesAmortizedCost
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Convertible Debt Securities, Fair Value Disclosure + References No definition available. + Details
Name: | adsk_ConvertibleDebtSecuritiesFairValueDisclosure
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Convertible Debt Securities, Unrealized Gains + References No definition available. + Details
Name: | adsk_ConvertibleDebtSecuritiesUnrealizedGains
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Convertible Debt Securities, Unrealized Losses + References No definition available. + Details
Name: | adsk_ConvertibleDebtSecuritiesUnrealizedLosses
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Derivative Assets, Accumulated Gross Unrealized Gain, before Tax + References No definition available. + Details
Name: | adsk_DerivativeAssetsAccumulatedGrossUnrealizedGainbeforeTax
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Derivative Assets, Accumulated Gross Unrealized Loss, before Tax + References No definition available. + Details
Name: | adsk_DerivativeAssetsAccumulatedGrossUnrealizedLossbeforeTax
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Derivative Contracts, Fair Value Disclosure + References No definition available. + Details
Name: | adsk_DerivativeContractsFairValueDisclosure
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Derivative Instruments And Hedges, Net + References No definition available. + Details
Name: | adsk_DerivativeInstrumentsAndHedgesNet
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Securities, Accumulated Gross Unrealized Gain, before Tax + References No definition available. + Details
Name: | adsk_SecuritiesAccumulatedGrossUnrealizedGainbeforeTax
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Securities, Accumulated Gross Unrealized Loss, before Tax + References No definition available. + Details
Name: | adsk_SecuritiesAccumulatedGrossUnrealizedLossbeforeTax
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trading Securities, Accumulated Gross Unrealized Gain, before Tax + References No definition available. + Details
Name: | adsk_TradingSecuritiesAccumulatedGrossUnrealizedGainbeforeTax
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Trading Securities, Accumulated Gross Unrealized Loss, before Tax + References No definition available. + Details
Name: | adsk_TradingSecuritiesAccumulatedGrossUnrealizedLossbeforeTax
Namespace Prefix: | adsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
Name: | us-gaap_TradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cost of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References No definition available. + Details
Name: | us-gaap_TradingSecuritiesCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=adsk_MarketableSecuritiesCurrentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_ConvertibleDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=adsk_MarketableSecuritiesNoncurrentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_SovereignDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_DepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_SovereignDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |