Equity (Tables)

6 Months Ended

Jun. 30, 2022

Equity

Summary of the status of the Company's restricted stock units and changes during the year

		Weighted
		Average
		Grant Date		Aggregate
		Fair Value		Fair Value
	RSUs and PSUs	Per RSU		(in millions)
Unvested at January 1, 2022	831,597	$	105.12
Granted(1)	305,249		187.31
Vested	(24,363)		95.75
Cancelled or forfeited	(21,873)		116.61
Unvested at June 30, 2022	1,090,610	$	128.10	$	249.4
Shares reserved for future grants (all plans)	1,566,598

(1) Comprised of 56,452 RSUs granted in January 2022 with a fair value of $152.21 per unit, and 136,346 RSUs and 112,451 PSUs granted in March 2022 with a fair value of $195.28 per unit. The service-based RSUs cliff vest on December 1, 2024 and the performance-based RSUs are subject to a three-year performance period ending December 31, 2024.

Schedule of share repurchase activity

	2022					2021
		Average Cost					Average Cost
	Shares	Per Share		Amount		Shares	Per Share		Amount
				(in millions)					(in millions)
First quarter	113,529	$	150.97	$	17.1	—	$	—	$	—
Second quarter	1,085,635		178.61		193.9	147,016		163.50		24.0
	1,199,164	$	176.00	$	211.0	147,016	$	163.50	$	24.0

Schedule of accumulated other comprehensive loss

	Foreign Currency		Postretirement Benefit		Accumulated Other
	Translation		Plan Adjustments,		Comprehensive
	Loss		Net of Tax		Loss
			(in millions)
Balance as of January 1, 2022	$	(55.2)	$	(13.7)	$	(68.9)
Current-period change		(19.3)		(0.1)		(19.4)
Balance as of June 30, 2022	$	(74.5)	$	(13.8)	$	(88.3)