XML 103 R130.htm IDEA: XBRL DOCUMENT v3.20.2
Dividends - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Aug. 18, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Disclosure of dividends [line items]        
Tax rate   30.00% 30.00% 30.00%
Proceeds/(settlements) of cash management related instruments   $ (85) $ (296) $ 292
Major ordinary share transactions [member]        
Disclosure of dividends [line items]        
Dividend per share, after period-end $ 0.55   $ 0.78 $ 0.63
Dividend amount, after period-end $ 2,782 0 $ 3,944 $ 3,356
Proceeds/(settlements) of cash management related instruments   $ 322    
BHP Group Limited [member]        
Disclosure of dividends [line items]        
Number of ordinary shares represented by each American Depositary Share   2    
Tax rate   30.00%    
BHP Group Plc [member]        
Disclosure of dividends [line items]        
Number of ordinary shares represented by each American Depositary Share   2