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Advertising and Promotional Expenses, included in Sales and Marketing Expenses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
ADVERTISING AND PROMOTIONAL EXPENSES, INCLUDED IN SALES AND MARKETING EXPENSES [Abstract]      
Advertising and promotional expenses $ 98.5 $ 84.7 $ 124.6