Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

RELATED PARTY TRANSACTIONS (NARRATIVE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Related Party Transaction [Line Items]
Accounts Payable, Current	$ 77,406		$ 84,180
Revenue from Contract with Customer, Excluding Assessed Tax	534,228	$ 576,638
Affiliated Entity [Member] \| Avion and Airmax [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party	200	100
Accounts Payable, Current	$ 108
Affiliated Entity [Member] \| Willis Towers Watson [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party		$ 800
Chief Executive Officer [Member] \| Avion and Airmax [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage	100.00%