Balance Sheet Components - Other Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Capitalized implementation costs, net	$ 175,966	$ 189,447
Deferred upfront incentive consideration	151,606	162,893
Long-term contract assets and customer advances and discounts	105,461	60,075
Right-of-Use asset	64,191
Long-term trade unbilled receivables	38,250	50,467
Other	134,631	147,789
Other assets, net	$ 670,105	$ 610,671