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Condensed Consolidated Statements of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Total
Balance at Dec. 31, 2021 $ 371 $ 1,729,312 $ (3,356,102) $ 3,929,147 $ (5,354) $ 2,297,374
Balance, Shares at Dec. 31, 2021 37,132   9,052      
Stock-based compensation $ 0 24,077 $ 0 0 0 24,077
Stock-based compensation, Shares 0   0      
Stock plan transactions and other $ 2 (61) $ 0 0 0 (59)
Stock plan transactions and other, Shares 134   0      
Acquisition of treasury stock $ 0 0 $ (345,921) 0 0 (345,921)
Acquisition of treasury stock, Shares 0   230      
Net income $ 0 0 $ 0 158,294 0 158,294
Other comprehensive income (loss), net of income tax 0 0 0 0 195 195
Balance at Mar. 31, 2022 $ 373 1,753,328 $ (3,702,023) 4,087,441 (5,159) 2,133,960
Balance, Shares at Mar. 31, 2022 37,266   9,282      
Balance at Dec. 31, 2021 $ 371 1,729,312 $ (3,356,102) 3,929,147 (5,354) 2,297,374
Balance, Shares at Dec. 31, 2021 37,132   9,052      
Net income           418,236
Balance at Jun. 30, 2022 $ 373 1,782,303 $ (3,969,221) 4,347,383 (6,639) 2,154,199
Balance, Shares at Jun. 30, 2022 37,284   9,480      
Balance at Mar. 31, 2022 $ 373 1,753,328 $ (3,702,023) 4,087,441 (5,159) 2,133,960
Balance, Shares at Mar. 31, 2022 37,266   9,282      
Stock-based compensation $ 0 29,142 $ 0 0 0 29,142
Stock-based compensation, Shares 0   0      
Stock plan transactions and other $ 0 (167) $ 0 0 0 (167)
Stock plan transactions and other, Shares 18   0      
Acquisition of treasury stock $ 0 0 $ (267,198) 0 0 (267,198)
Acquisition of treasury stock, Shares 0   198      
Net income $ 0 0 $ 0 259,942 0 259,942
Other comprehensive income (loss), net of income tax 0 0 0 0 (1,480) (1,480)
Balance at Jun. 30, 2022 $ 373 1,782,303 $ (3,969,221) 4,347,383 (6,639) 2,154,199
Balance, Shares at Jun. 30, 2022 37,284   9,480      
Balance at Dec. 31, 2022 $ 373 1,829,304 $ (4,282,014) 4,828,248 (7,888) 2,368,023
Balance, Shares at Dec. 31, 2022 37,320   9,693      
Stock-based compensation $ 0 20,670 $ 0 0 0 20,670
Stock-based compensation, Shares 0   0      
Stock plan transactions and other $ 1 (291) $ 0 0 0 (290)
Stock plan transactions and other, Shares 99   0      
Acquisition of treasury stock $ 0 0 $ (198,819) 0 0 (198,819)
Acquisition of treasury stock, Shares 0   125      
Net income $ 0 0 $ 0 291,644 0 291,644
Other comprehensive income (loss), net of income tax 0 0 0 0 457 457
Balance at Mar. 31, 2023 $ 374 1,849,683 $ (4,480,833) 5,119,892 (7,431) 2,481,685
Balance, Shares at Mar. 31, 2023 37,419   9,818      
Balance at Dec. 31, 2022 $ 373 1,829,304 $ (4,282,014) 4,828,248 (7,888) 2,368,023
Balance, Shares at Dec. 31, 2022 37,320   9,693      
Net income           633,434
Balance at Jun. 30, 2023 $ 375 1,880,933 $ (4,569,152) 5,461,682 (6,952) 2,766,886
Balance, Shares at Jun. 30, 2023 37,459   9,863      
Balance at Mar. 31, 2023 $ 374 1,849,683 $ (4,480,833) 5,119,892 (7,431) 2,481,685
Balance, Shares at Mar. 31, 2023 37,419   9,818      
Stock-based compensation $ 0 31,467 $ 0 0 0 31,467
Stock-based compensation, Shares 0   0      
Stock plan transactions and other $ 1 (217) $ 0 0 0 (216)
Stock plan transactions and other, Shares 40   0      
Acquisition of treasury stock $ 0 0 $ (88,319) 0 0 (88,319)
Acquisition of treasury stock, Shares 0   45      
Net income $ 0 0 $ 0 341,790 0 341,790
Other comprehensive income (loss), net of income tax 0 0 0 0 479 479
Balance at Jun. 30, 2023 $ 375 $ 1,880,933 $ (4,569,152) $ 5,461,682 $ (6,952) $ 2,766,886
Balance, Shares at Jun. 30, 2023 37,459   9,863