SHARE-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of compensation cost for share-based payment arrangements, allocation of share-based compensation costs by plan

The following table details our share-based compensation expense related to award grants to our officers, directors, and employees:

	Three Months Ended				Nine Months Ended
($ in millions)	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
Service-based RSUs	$	5	$	4	$	16	$	13
Performance-based RSUs	4		3		3		6
ILG Acquisition Converted RSUs	1		2		2		8
	10		9		21		27
SARs	1		—		3		2
Stock options	—		—		—		—
	$	11	$	9	$	24	$	29

Schedule of unrecognized compensation cost, nonvested awards

The following table details our deferred compensation costs related to unvested awards:

($ in millions)	At September 30, 2020		At December 31, 2019
Service-based RSUs	$	23	$	17
Performance-based RSUs	6		10
ILG Acquisition Converted RSUs	1		3
	30		30
SARs	2		1
Stock options	—		—
	$	32	$	31

Assumptions used to estimate fair value of grants

The following table outlines the assumptions used to estimate the fair value of grants during the first three quarters of 2020:

Expected volatility	38.81%
Dividend yield	2.13%
Risk-free rate	0.96%
Expected term (in years)	6.25