Equity (Tables)

3 Months Ended

Mar. 31, 2024

Equity

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

		Weighted
		Average
	RSU and PSU	Grant Date
	Aggregate Units	Fair Value
Unvested at January 1, 2024	437,239	$	213.06
Granted(1)	170,611		289.07
Vested	(3,770)		211.16
Cancelled or forfeited	(5,556)		214.23
Unvested at March 31, 2024	598,524	$	234.73
Shares reserved for future grants (all plans)	1,334,811

(1) Comprised of 100,669 RSUs and 69,942 PSUs granted in February 2024. The RSUs cliff vest on December 1, 2026 and the PSUs vest upon the completion of a 3-year performance period ending December 31, 2026.

Schedule of accumulated other comprehensive loss

			Pension and
	Foreign Currency		Postretirement Benefit		Accumulated Other
	Translation		Plan Adjustments,		Comprehensive
	Loss		Net of Tax		Loss
			(in millions)
Balance as of January 1, 2024	$	(75.7)	$	(1.0)	$	(76.7)
Current-period change		(15.7)		(0.9)		(16.6)
Balance as of March 31, 2024	$	(91.4)	$	(1.9)	$	(93.3)