Business Acquisitions - Preliminary Purchase Price Allocation to Intangible Assets Acquired (Details) - USD ($) $ in Millions	May 31, 2019	Feb. 21, 2019
Profitect Inc
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 42
Profitect Inc | Current technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 40
Useful Life (in years)	8 years
Profitect Inc | Customer and other relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 2
Useful Life (in years)	1 year
Temptime Corporation
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 106
Temptime Corporation | Current technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 25
Useful Life (in years)		8 years
Temptime Corporation | Customer and other relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 79
Useful Life (in years)		8 years
Temptime Corporation | Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 2
Useful Life (in years)		3 years