Parent Company Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes information about RSUs, PSUs and stock options granted to our employees and key executive officers under GM's stock-based compensation programs (units in thousands):

	Year Ended December 31, 2018
	Shares		Weighted-Average Grant Date Fair Value		Weighted-Average Remaining Contractual Term (years)
Units outstanding at January 1, 2018	2,873		$	28.44	1.4
Granted	774		$	38.66
Settled	(664	)	$	33.01
Forfeited or expired	(121	)	$	34.25
Units outstanding at December 31, 2018(a)	2,862		$	27.54	1.2
Units unvested and expected to vest at December 31, 2018	1,439		$	38.23	1.8
Units vested and payable at December 31, 2018	1,335		$	15.56

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(a) Includes the target amount of PSUs.