Stock-Based Compensation (Tables)	6 Months Ended
Jun. 30, 2021
Stock-Based Compensation [Abstract]
Summary Of Stock-Based Compensation Expense	Three months ended Six months ended June 30, June 30, 2021 2020 2021 2020Stock-based compensation$ 47,670 $ 23,676 $ 103,630 $ 41,384Stock-based compensation, net of income taxes$ 42,722 $ 20,007 $ 93,187 $ 34,512Total capitalized stock-based compensation included in leasehold improvements, property and equipment, net on the condensed consolidated balance sheets$ 380 $ 309 $ 950 $ 622Excess tax benefit on stock-based compensation recognized in benefit/(provision) for income taxes on the condensed consolidated statements of income and comprehensive income$ 9,421 $ 15,708 $ 24,446 $ 39,339

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration