SHARE-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 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				Six Months Ended
($ in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Service-based RSUs	$	7	$	6	$	11	$	9
Performance-based RSUs	1		2		(1)		3
ILG Acquisition Converted RSUs	—		2		1		6
	8		10		11		18
SARs	1		1		2		2
Stock options	—		—		—		—
	$	9	$	11	$	13	$	20

Schedule of unrecognized compensation cost, nonvested awards

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

($ in millions)	At June 30, 2020		At December 31, 2019
Service-based RSUs	$	30	$	17
Performance-based RSUs	4		10
ILG Acquisition Converted RSUs	1		3
	35		30
SARs	3		1
Stock options	—		—
	$	38	$	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 half of 2020:

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