Goodwill and Intangible Assets - Finite Lived Intangibles Acquired (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 28, 2020	Dec. 31, 2020	Dec. 31, 2019
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period		10 years	10 years 2 months 12 days
Fair Value		$ 67,670
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period		8 years	8 years 6 months
Fair Value		$ 222,582
Other
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period		4 years 3 months 18 days	4 years 3 months 18 days
Fair Value		$ 56,802
Fiscal 2020 Acquisitions
Finite-Lived Intangible Assets [Line Items]
Fair Value		$ 347,054
Fiscal 2020 Acquisitions | Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period		9 years 8 months 12 days
Fair Value		$ 67,670
Fiscal 2020 Acquisitions | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period		6 years 10 months 24 days
Fair Value		$ 222,582
Fiscal 2020 Acquisitions | Other
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period		3 years 3 months 18 days
Fair Value		$ 56,802
RetailMeNot, Inc.
Finite-Lived Intangible Assets [Line Items]
Fair Value		304,390
RetailMeNot, Inc. | Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	10 years
Fair Value		62,940
RetailMeNot, Inc. | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	7 years
Fair Value		198,840
RetailMeNot, Inc. | Other
Finite-Lived Intangible Assets [Line Items]
Weighted-Average   Amortization Period	3 years
Fair Value		$ 42,610