XML 106 R87.htm IDEA: XBRL DOCUMENT v3.21.2
FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS - Summary of Assets Measured at Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Sep. 30, 2020
Liabilities:    
Contingent consideration $ 1,759 $ 4,197
Recurring Fair Value Measurements    
Assets:    
Cash and cash equivalents 917,534 487,884
Short-term investments 198,700 89,335
Other current assets 18,350 45,577
Non-qualified supplemental savings plan 18,221 19,819
Debt and equity securities 17,223 11,766
Cornerstone investment in ADNOC Drilling 100,000  
Total investments 135,444 31,585
Other assets 832 3,286
Total assets measured at fair value 1,270,860 657,667
Liabilities:    
Contingent consideration 2,996 9,123
Level 1 | Recurring Fair Value Measurements    
Assets:    
Cash and cash equivalents 917,534 487,884
Short-term investments 5,750 9,809
Other current assets 18,350 45,577
Non-qualified supplemental savings plan 18,221 19,819
Debt and equity securities 13,858 7,274
Cornerstone investment in ADNOC Drilling 100,000  
Total investments 132,079 27,093
Other assets 832 3,286
Total assets measured at fair value 1,074,545 573,649
Liabilities:    
Contingent consideration 0 0
Level 2 | Recurring Fair Value Measurements    
Assets:    
Cash and cash equivalents 0 0
Short-term investments 192,950 79,526
Other current assets 0 0
Non-qualified supplemental savings plan 0 0
Debt and equity securities 0 3,992
Cornerstone investment in ADNOC Drilling 0  
Total investments 0 3,992
Other assets 0 0
Total assets measured at fair value 192,950 83,518
Liabilities:    
Contingent consideration 0 0
Level 3 | Recurring Fair Value Measurements    
Assets:    
Cash and cash equivalents 0 0
Short-term investments 0 0
Other current assets 0 0
Non-qualified supplemental savings plan 0 0
Debt and equity securities 3,365 500
Cornerstone investment in ADNOC Drilling 0  
Total investments 3,365 500
Other assets 0 0
Total assets measured at fair value 3,365 500
Liabilities:    
Contingent consideration 2,996 9,123
Certificates of deposit | Recurring Fair Value Measurements    
Assets:    
Short-term investments   1,370
Certificates of deposit | Level 1 | Recurring Fair Value Measurements    
Assets:    
Short-term investments   0
Certificates of deposit | Level 2 | Recurring Fair Value Measurements    
Assets:    
Short-term investments   1,370
Certificates of deposit | Level 3 | Recurring Fair Value Measurements    
Assets:    
Short-term investments   0
Corporate debt securities | Recurring Fair Value Measurements    
Assets:    
Short-term investments 192,950 78,156
Corporate debt securities | Level 1 | Recurring Fair Value Measurements    
Assets:    
Short-term investments 0 0
Corporate debt securities | Level 2 | Recurring Fair Value Measurements    
Assets:    
Short-term investments 192,950 78,156
Corporate debt securities | Level 3 | Recurring Fair Value Measurements    
Assets:    
Short-term investments 0 0
U.S. government and federal agency securities | Recurring Fair Value Measurements    
Assets:    
Short-term investments 5,750 7,817
U.S. government and federal agency securities | Level 1 | Recurring Fair Value Measurements    
Assets:    
Short-term investments 5,750 7,817
U.S. government and federal agency securities | Level 2 | Recurring Fair Value Measurements    
Assets:    
Short-term investments 0 0
U.S. government and federal agency securities | Level 3 | Recurring Fair Value Measurements    
Assets:    
Short-term investments $ 0 0
Other | Recurring Fair Value Measurements    
Assets:    
Short-term investments   1,992
Other | Level 1 | Recurring Fair Value Measurements    
Assets:    
Short-term investments   1,992
Other | Level 2 | Recurring Fair Value Measurements    
Assets:    
Short-term investments   0
Other | Level 3 | Recurring Fair Value Measurements    
Assets:    
Short-term investments   $ 0