XML 86 R116.htm IDEA: XBRL DOCUMENT v3.19.3
Fair Value Measurements (Fair Value of Financial Instruments) (Details) - USD ($)
$ in Thousands
Aug. 31, 2019
Aug. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 2,496,465 $ 2,518,699
Senior Notes | 5.625% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 398,886 397,995
Senior Notes, stated interest rate 5.625%  
Senior Notes | 5.625% Senior Notes | Level 2 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 398,886 397,995
Senior Notes | 5.625% Senior Notes | Level 2 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt 416,000 415,704
Senior Notes | 4.700% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 498,004 497,350
Senior Notes, stated interest rate 4.70%  
Senior Notes | 4.700% Senior Notes | Level 2 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 498,004 497,350
Senior Notes | 4.700% Senior Notes | Level 2 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt 525,890 503,545
Senior Notes | 4.900% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 299,057 298,814
Senior Notes, stated interest rate 4.90%  
Senior Notes | 4.900% Senior Notes | Level 3 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 299,057 298,814
Senior Notes | 4.900% Senior Notes | Level 3 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt 318,704 306,535
Senior Notes | 3.950% Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 494,825 $ 494,208
Senior Notes, stated interest rate 3.95% 3.95%
Senior Notes | 3.950% Senior Notes | Level 2 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 494,825 $ 494,208
Senior Notes | 3.950% Senior Notes | Level 2 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes payable and long-term debt $ 509,845 $ 476,010