Revenue - Contract balances (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract assets, net	$ 171,951	$ 245,347	$ 164,847	$ 221,997
Deferred Revenue, Revenue Recognized	414,636	411,653
Billings - Contract Assets	(407,532)	(388,303)
Revenue recognized	(30,507)	(26,777)
Deferrals of customer payments	27,101	24,637
Capitalized Contract Cost, Amortization	(1,800)	(1,000)
Contract liabilities	$ 84,769	$ 47,906	$ 88,175	$ 50,046