CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Paid-in Capital | Retained Earnings | Other |
Common Stock, Shares | | 51.8 | | | |
Total stockholders’ equity at Dec. 31, 2021 | $ 1,865.4 | $ 0.5 | $ 690.8 | $ 1,174.4 | $ (0.3) |
Stock-based compensation expense | 24 | | 24 | | |
Employee stock purchase plan, shares | | 0.2 | | | |
Employee stock purchase plan, value | 10.4 | | 10.4 | | |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (11.3) | | (11.3) | | |
Vesting of restricted stock units, shares | | 0 | | | |
Stock Repurchased and Retired During Period, Shares | | (1.6) | | | |
Stock Repurchased and Retired During Period, Value | (170) | | (21.8) | (148.2) | |
Foreign currency translation adjustments | (1.7) | | | | (1.7) |
Net income | 139.3 | | | 139.3 | |
Shares Outstanding at Jun. 30, 2022 | | 50.4 | | | |
Total stockholders’ equity at Jun. 30, 2022 | 1,856.1 | $ 0.5 | 692.1 | 1,165.5 | (2) |
Common Stock, Shares | | 51.3 | | | |
Total stockholders’ equity at Mar. 31, 2022 | 1,869.2 | $ 0.5 | 696 | 1,173 | (0.3) |
Stock-based compensation expense | 11.2 | | 11.2 | | |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (2.5) | | (2.5) | | |
Vesting of restricted stock units, shares | | 0 | | | |
Stock Repurchased and Retired During Period, Shares | | (0.9) | | | |
Stock Repurchased and Retired During Period, Value | (92.6) | | (12.6) | (80) | |
Foreign currency translation adjustments | (1.7) | | | | (1.7) |
Net income | 72.5 | | | 72.5 | |
Shares Outstanding at Jun. 30, 2022 | | 50.4 | | | |
Total stockholders’ equity at Jun. 30, 2022 | 1,856.1 | $ 0.5 | 692.1 | 1,165.5 | (2) |
Total stockholders’ equity at Dec. 31, 2022 | 1,901.3 | $ 0.5 | 703.5 | 1,200 | (2.7) |
Stock-based compensation expense | 23.4 | | 23.4 | | |
Employee stock purchase plan, shares | | 0.4 | | | |
Employee stock purchase plan, value | 11.1 | | 11.1 | | |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (14.2) | | (14.2) | | |
Vesting of restricted stock units, shares | | 0 | | | |
Stock Repurchased and Retired During Period, Shares | | (1.4) | | | |
Stock Repurchased and Retired During Period, Value | (107) | | (21) | (86) | |
Foreign currency translation adjustments | 2.4 | | | | 2.4 |
Net income | 109.6 | | | 109.6 | |
Shares Outstanding at Jun. 30, 2023 | | 48.5 | | | |
Total stockholders’ equity at Jun. 30, 2023 | 1,926.6 | $ 0.5 | 702.8 | 1,223.6 | (0.3) |
Common Stock, Shares | | 49.2 | | | |
Total stockholders’ equity at Mar. 31, 2023 | 1,923.5 | $ 0.5 | 714.4 | 1,210.3 | (1.7) |
Stock-based compensation expense | 11.3 | | 11.3 | | |
Employee stock purchase plan, shares | | 0.2 | | | |
Employee stock purchase plan, value | 0 | | 0 | | |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | (10) | | (10) | | |
Vesting of restricted stock units, shares | | 0 | | | |
Stock Repurchased and Retired During Period, Shares | | (0.9) | | | |
Stock Repurchased and Retired During Period, Value | (59.7) | | (12.9) | (46.8) | |
Foreign currency translation adjustments | 1.4 | | | | 1.4 |
Net income | 60.1 | | | 60.1 | |
Shares Outstanding at Jun. 30, 2023 | | 48.5 | | | |
Total stockholders’ equity at Jun. 30, 2023 | $ 1,926.6 | $ 0.5 | $ 702.8 | $ 1,223.6 | $ (0.3) |