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Acquisitions (Details) - USD ($) $ in Thousands, shares in Millions	1 Months Ended	6 Months Ended
	Jan. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired		$ 16,411	$ 179,372
Goodwill		5,244,685		$ 5,236,302
Issuance of shares for acquisition of business		0	$ 113,841
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Consideration transferred		$ 16,000
Defenders
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired	$ 173,000
Consideration transferred	290,000
Issuance of shares for acquisition of business	$ 114,000
Defenders | Common Stock
Business Acquisition [Line Items]
Shares issued for acquisition (in shares)	16

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