Acquisitions (Details 1) - Marketo $ in Thousands	Oct. 31, 2018 USD ($)
Schedule of acquired assets and liabilities
Customer contracts and relationships	$ 577,500
Purchased technology	444,500
Backlog	105,500
Non-competition agreements	12,100
Trademarks	328,500
Total identifiable intangible assets acquired	1,468,100
Net assets acquired or liabilities assumed	(194,588)
Goodwill, acquired during period	3,459,256	[1]
Total estimated purchase price	$ 4,732,768
Customer contracts and relationships
Schedule of acquired assets and liabilities
Acquired finite-lived intangible assets, weighted average useful life	11 years
Purchased technology
Schedule of acquired assets and liabilities
Acquired finite-lived intangible assets, weighted average useful life	7 years
Backlog
Schedule of acquired assets and liabilities
Acquired finite-lived intangible assets, weighted average useful life	2 years
Non-competition agreements
Schedule of acquired assets and liabilities
Acquired finite-lived intangible assets, weighted average useful life	2 years
Trademarks
Schedule of acquired assets and liabilities
Acquired finite-lived intangible assets, weighted average useful life	9 years

[1] Non-deductible for tax purposes