Acquisitions - Acquisition of Covisint Corporation (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 26, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Purchase Price Allocation
Goodwill		$ 3,578,976		$ 3,578,976		$ 3,416,749
Acquisition-related costs		1,197	$ 3,892	3,453	$ 10,666
Covisint Corporation
Business Acquisition [Line Items]
Purchase consideration	$ 102,800
Purchase Price Allocation
Current assets	41,586
Non-current tangible assets	3,426
Liabilities assumed	(23,033)
Total identifiable net assets	75,879
Goodwill	26,905
Net assets acquired	102,784
Cash acquired from acquisition	31,500
Goodwill expected to be tax deductible	26,800
Deferred revenue	12,200
Deferred revenue adjustment	4,600
Acquired receivables, fair value	7,800
Acquired receivables, gross contractual amount	7,900
Acquired receivables, estimated uncollectible	100
Acquisition-related costs		$ 100		$ 900
Covisint Corporation | Customer assets
Purchase Price Allocation
Acquired intangible assets	36,600
Covisint Corporation | Technology assets
Purchase Price Allocation
Acquired intangible assets	$ 17,300