CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Treasury Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss |
Beginning balance (in shares) at Dec. 31, 2019 | | 218.1 | 9 | | | |
Beginning balance at Dec. 31, 2019 | $ 4,148.3 | $ 218.1 | $ (1,278.7) | $ 1,623.3 | $ 3,741.6 | $ (156) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 310.6 | | | | 310.6 | |
Other comprehensive income (loss), net of tax | 4 | | | | | 4 |
Common stock issued under stock plans (in shares) | | 0.4 | | | | |
Common stock issued under stock plans | 29.1 | $ 0.4 | | 28.7 | | |
Stock-based compensation expense | 23.9 | | | 23.9 | | |
Purchases of treasury stock (in shares) | | | 3 | | | |
Purchases of treasury stock | (614.8) | | $ (614.8) | | | |
Ending balance (in shares) at Mar. 31, 2020 | | 218.5 | 12 | | | |
Ending balance at Mar. 31, 2020 | 3,901.1 | $ 218.5 | $ (1,893.5) | 1,675.9 | 4,052.2 | (152) |
Beginning balance (in shares) at Dec. 31, 2019 | | 218.1 | 9 | | | |
Beginning balance at Dec. 31, 2019 | 4,148.3 | $ 218.1 | $ (1,278.7) | 1,623.3 | 3,741.6 | (156) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 513.9 | | | | | |
Other comprehensive income (loss), net of tax | (1.9) | | | | | |
Ending balance (in shares) at Sep. 30, 2020 | | 635 | 12.1 | | | |
Ending balance at Sep. 30, 2020 | 4,210.3 | $ 635 | $ (1,903.9) | 1,381.6 | 4,255.5 | (157.9) |
Beginning balance (in shares) at Mar. 31, 2020 | | 218.5 | 12 | | | |
Beginning balance at Mar. 31, 2020 | 3,901.1 | $ 218.5 | $ (1,893.5) | 1,675.9 | 4,052.2 | (152) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | (121.9) | | | | (121.9) | |
Other comprehensive income (loss), net of tax | 5.9 | | | | | 5.9 |
Common stock issued under stock plans (in shares) | | 1.2 | | | | |
Common stock issued under stock plans | 38.2 | $ 1.2 | | 37 | | |
Stock-based compensation expense | 24.8 | | | 24.8 | | |
Purchases of treasury stock (in shares) | | | 0.1 | | | |
Purchases of treasury stock | (9) | | $ (9) | | | |
Stock issued to effect stock split (in shares) | | 413.8 | | | | |
Stock issued to effect stock split | 0 | $ 413.8 | | (413.8) | | |
Ending balance (in shares) at Jun. 30, 2020 | | 633.5 | 12.1 | | | |
Ending balance at Jun. 30, 2020 | 3,839.1 | $ 633.5 | $ (1,902.5) | 1,323.9 | 3,930.3 | (146.1) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 325.2 | | | | 325.2 | |
Other comprehensive income (loss), net of tax | (11.8) | | | | | (11.8) |
Common stock issued under stock plans (in shares) | | 1.5 | | | | |
Common stock issued under stock plans | 36.2 | $ 1.5 | | 34.7 | | |
Stock-based compensation expense | 23 | | | 23 | | |
Purchases of treasury stock | (1.4) | | $ (1.4) | | | |
Ending balance (in shares) at Sep. 30, 2020 | | 635 | 12.1 | | | |
Ending balance at Sep. 30, 2020 | 4,210.3 | $ 635 | $ (1,903.9) | 1,381.6 | 4,255.5 | (157.9) |
Beginning balance (in shares) at Dec. 31, 2020 | | 636.4 | 12.1 | | | |
Beginning balance at Dec. 31, 2020 | 4,574.3 | $ 636.4 | $ (1,904.1) | 1,438.1 | 4,565 | (161.1) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 338.2 | | | | 338.2 | |
Other comprehensive income (loss), net of tax | (11.3) | | | | | (11.3) |
Common stock issued under stock plans (in shares) | | 1.1 | | | | |
Common stock issued under stock plans | 31.6 | $ 1.1 | | 30.5 | | |
Stock-based compensation expense | 28.2 | | | 28.2 | | |
Purchases of treasury stock (in shares) | | | 3.6 | | | |
Purchases of treasury stock | (302.6) | | $ (302.6) | | | |
Ending balance (in shares) at Mar. 31, 2021 | | 637.5 | 15.7 | | | |
Ending balance at Mar. 31, 2021 | 4,658.4 | $ 637.5 | $ (2,206.7) | 1,496.8 | 4,903.2 | (172.4) |
Beginning balance (in shares) at Dec. 31, 2020 | | 636.4 | 12.1 | | | |
Beginning balance at Dec. 31, 2020 | 4,574.3 | $ 636.4 | $ (1,904.1) | 1,438.1 | 4,565 | (161.1) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 1,167.8 | | | | | |
Other comprehensive income (loss), net of tax | 5.7 | | | | | |
Ending balance (in shares) at Sep. 30, 2021 | | 641.2 | 17 | | | |
Ending balance at Sep. 30, 2021 | 5,541.3 | $ 641.2 | $ (2,320.4) | 1,643.1 | 5,732.8 | (155.4) |
Beginning balance (in shares) at Mar. 31, 2021 | | 637.5 | 15.7 | | | |
Beginning balance at Mar. 31, 2021 | 4,658.4 | $ 637.5 | $ (2,206.7) | 1,496.8 | 4,903.2 | (172.4) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 489.5 | | | | 489.5 | |
Other comprehensive income (loss), net of tax | 12.8 | | | | | 12.8 |
Common stock issued under stock plans (in shares) | | 2.6 | | | | |
Common stock issued under stock plans | 54.2 | $ 2.6 | | 51.6 | | |
Stock-based compensation expense | 30.3 | | | 30.3 | | |
Purchases of treasury stock (in shares) | | | 1.3 | | | |
Purchases of treasury stock | (111.9) | | $ (111.9) | | | |
Ending balance (in shares) at Jun. 30, 2021 | | 640.1 | 17 | | | |
Ending balance at Jun. 30, 2021 | 5,133.3 | $ 640.1 | $ (2,318.6) | 1,578.7 | 5,392.7 | (159.6) |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income | 340.1 | | | | 340.1 | |
Other comprehensive income (loss), net of tax | 4.2 | | | | | 4.2 |
Common stock issued under stock plans (in shares) | | 1.1 | | | | |
Common stock issued under stock plans | 38.9 | $ 1.1 | | 37.8 | | |
Stock-based compensation expense | 26.6 | | | 26.6 | | |
Purchases of treasury stock | (1.8) | | $ (1.8) | | | |
Ending balance (in shares) at Sep. 30, 2021 | | 641.2 | 17 | | | |
Ending balance at Sep. 30, 2021 | $ 5,541.3 | $ 641.2 | $ (2,320.4) | $ 1,643.1 | $ 5,732.8 | $ (155.4) |