Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 315,406	$ 230,266	$ 402,209	$ 285,873
Effective tax rates	30.00%	46.00%	22.00%	32.00%
Income Tax Contingency [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit	$ 92,000	$ 46,000	$ 157,000	$ 87,000
Unrecognized tax benefits	81,000		81,000		$ 67,000
Reduction in provision for income taxes due to impact of effective tax rate	47,000		47,000
Deferred tax assets, valuation allowance	352,000		352,000		135,000
Other noncurrent liabilities
Income Tax Contingency [Line Items]
Unrecognized tax benefits	24,000		24,000
Non-current Assets
Income Tax Contingency [Line Items]
Unrecognized tax benefits	29,000		29,000
Deferred tax assets	389,000		389,000		$ 658,000
Research Tax Credit Carryforward
Income Tax Contingency [Line Items]
Tax credit carryforward	220,000		220,000
Valuation allowance	$ 220,000		$ 220,000