Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement, Noncash Expense [Abstract]

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity

The following table presents movements in the outstanding restricted stock units and restricted stock under the AerCap Equity Plans during the year ended December 31, 2023:


	Year Ended December 31, 2023
	Number of service-based restricted stock units and restricted stock	Number of performance-based restricted stock units and restricted stock	Weighted average grant date fair value of service-based grants ($)		Weighted average grant date fair value of performance-based grants ($)
Number at beginning of period	2,929,585	4,010,991	$	49.94	$	51.18
Granted (a)	813,256	625,169	63.48		65.72
Vested (b)	(1,369,328)	(234,340)	47.87		55.11
Forfeited	(18,076)	(11,551)	52.64		64.13
Number at end of period	2,355,437	4,390,269	$	55.80	$	53.01

(a)Includes 830,580 shares of restricted stock granted under the AerCap Equity Plans, of which 538,853 shares of restricted stock were issued, with the remaining 291,727 ordinary shares being withheld and applied to pay the taxes involved. As part of the 291,727 ordinary shares withheld to pay for taxes, 162,316 ordinary shares were treated as granted and subsequently vested on the grant date under specific Irish tax legislation. As a result, we recognized an expense of $10 million on the grant dates associated with these ordinary shares.

(b)465,998 restricted stock units, which were previously granted under the AerCap Equity Plans, vested. In connection with the vesting of the restricted stock units, the Company issued, in full satisfaction of its obligations, 295,547 ordinary shares to the holders of these restricted stock units, with the remainder being withheld and applied to pay the taxes in respect of those awards. Restrictions on 982,882 shares of restricted stock (813,500 shares of restricted stock net of withholding for taxes) lapsed during the period. In addition, 162,316 ordinary shares were treated as granted and subsequently vested on the grant dates, as described in (a) above.

Summary of Expected Share-based Compensation Expenses Assuming Established Performance Criteria are Met and No Forfeitures Occur

The following table presents our expected share-based compensation expense based on existing grants, assuming that the established performance criteria are met and that no forfeitures occur:


	Expected share-based compensation expense
	(U.S. Dollars in millions)
2024	$	93.1
2025	57.3
2026	24.9
2027	4.1