Vacation Ownership Contract Receivables (Current And Long-Term Vacation Ownership Contract Receivables) (Details) - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivables [Line Items]
Non-securitized contract receivables		$ 3,216	$ 3,101
Financing Receivable, Allowance for Credit Loss		604	574	$ 569	$ 541
Vacation ownership contract receivables, net		2,612	2,527
Securitized
Accounts, Notes, Loans and Financing Receivables [Line Items]
Non-securitized contract receivables	[1]	2,218	2,291
Securitized | Trade Accounts Receivable
Accounts, Notes, Loans and Financing Receivables [Line Items]
Interest receivables on securitized contract receivables		17	18
Non-securitized
Accounts, Notes, Loans and Financing Receivables [Line Items]
Non-securitized contract receivables	[2]	998	810
Non-securitized | Trade Accounts Receivable
Accounts, Notes, Loans and Financing Receivables [Line Items]
Interest receivables on securitized contract receivables		$ 9	$ 8

[1] Excludes $17 million and $18 million of accrued interest on VOCRs as of September 30, 2024 and December 31, 2023, which are included in Trade receivables, net on the Condensed Consolidated Balance Sheets.

[2] Excludes $9 million and $8 million of accrued interest on VOCRs as of September 30, 2024 and December 31, 2023, which are included in Trade receivables, net on the Condensed Consolidated Balance Sheets.