Acquisitions - Narrative (Details) - USD ($) $ in Millions	Jan. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill		$ 3,284	$ 3,824
hello
Business Acquisition [Line Items]
Payments to acquire business	$ 351
Purchase price consideration	351
Other intangible assets	160
Goodwill	171
hello | North America
Business Acquisition [Line Items]
Goodwill	171
hello | Trademarks
Business Acquisition [Line Items]
Other intangible assets	$ 115
Useful life	25 years
hello | Customer Relationships
Business Acquisition [Line Items]
Other intangible assets	$ 45
Useful life	17 years