Annual report pursuant to Section 13 and 15(d)

Business combinations - Pro Forma Results (Details)

v3.21.2
Business combinations - Pro Forma Results (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Business Combination and Asset Acquisition [Abstract]    
Revenue $ 4,672,597 $ 4,013,994
Cost of revenue 3,566,894 3,107,493
Gross profit 1,105,703 906,501
Selling, general, and administrative expenses 553,048 485,903
Amortization of intangible assets 85,621 101,467
Operating income 467,034 319,131
Interest expense (37,410) (38,239)
Other expense, net (2,414) (12,791)
Income before income taxes 427,210 268,101
Provision for income taxes 102,045 64,328
Net income $ 325,165 $ 203,773
Basic (in dollars per share) $ 5.24 $ 3.23
Diluted (in dollars per share) $ 5.21 $ 3.22
Basic (in shares) 62,072 63,062
Diluted (in shares) 62,365 63,322