Authorized shares of common and preferred stock and stock-based compensation plans (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Schedule of Key Assumptions to Value Market-based Awards

The key assumptions used in valuing these market-based awards are as follows:

	Three Months Ended
	(unaudited)
	March 31, 2022	March 31, 2021
Number of simulations	100,000	100,000
Expected volatility	37.81%	40.60%
Expected life in years	2.95 years	2.95 years
Risk-free interest rate	1.33%	0.21%
Dividend yield	2.52%	2.66%