Timeshare Financing Receivables - Financing Receivable by Average FICO Score (Details) - USD ($) $ in Millions		Sep. 30, 2021		Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		$ 1,151
Originated
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		1,270		$ 1,185
Acquired
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		1,135	[1]
Legacy-HGV
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		1,151		1,185
Legacy-Diamond | Originated
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		119
Legacy-Diamond | Acquired
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		1,135
More than 700
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		693
More than 700 | Legacy-HGV
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		693		711
More than 700 | Legacy-Diamond | Originated
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		85
More than 700 | Legacy-Diamond | Acquired
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		721
600-699
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		254
600-699 | Legacy-HGV
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		254		266
600-699 | Legacy-Diamond | Originated
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		25
600-699 | Legacy-Diamond | Acquired
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		342
Less than 600
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		35
Less than 600 | Legacy-HGV
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		35		36
Less than 600 | Legacy-Diamond | Originated
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		4
Less than 600 | Legacy-Diamond | Acquired
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		54
No score
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[2]	169
No score | Legacy-HGV
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		169	[3]	$ 172	[2]
No score | Legacy-Diamond | Originated
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[4]	5
No score | Legacy-Diamond | Acquired
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[5]	$ 18

[1] Acquired timeshare financing receivables include all timeshare financing receivables of Legacy-Diamond as of the Acquisition Date. Originated timeshare financing receivables include all Legacy-HGV timeshare financing receivables and Legacy-Diamond timeshare financing receivables originated after the Acquisition Date.

[2] Timeshare financing receivables without a FICO score are primarily related to foreign borrowers.

[3] Timeshare financing receivables without a FICO score are primarily related to foreign borrowers.

[4] Timeshare financing receivables without a FICO score are primarily related to foreign borrowers.

[5] Timeshare financing receivables without a FICO score are primarily related to foreign borrowers.