XML 111 R100.htm IDEA: XBRL DOCUMENT v3.20.2
Changes in Equity and Earnings Per Share - Summary of Changes in Other Comprehensive Income Reserves (Detail) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Other comprehensive income    
Exchange differences on translation of foreign operations (gains/(losses)) $ (13,025) $ 1,714
Cash flow hedges (99) (168)
Re-measurements of post-employment benefits (1) (35)
Total comprehensive income (15,239) 8,154
Translation reserves [member]    
Disclosure of information about changes in other comprehensive income reserves [line items]    
Beginning balance (19,936) (21,079)
Other comprehensive income    
Exchange differences on translation of foreign operations (gains/(losses)) (12,293) 1,719
Cash flow hedges and cumulative translation adjustments in relation to Australia divestiture reclassified to profit ot loss (645)  
Re-measurements of post-employment benefits 0  
Total comprehensive income (12,938) 1,719
Ending balance (32,874) (19,360)
Hedging reserves [member]    
Disclosure of information about changes in other comprehensive income reserves [line items]    
Beginning balance 397 494
Other comprehensive income    
Exchange differences on translation of foreign operations (gains/(losses)) 0  
Cash flow hedges (138) (134)
Cash flow hedges and cumulative translation adjustments in relation to Australia divestiture reclassified to profit ot loss 219  
Re-measurements of post-employment benefits 0  
Total comprehensive income 81 (134)
Ending balance 478 360
Post- employment benefits [member]    
Disclosure of information about changes in other comprehensive income reserves [line items]    
Beginning balance (1,740) (1,567)
Other comprehensive income    
Exchange differences on translation of foreign operations (gains/(losses)) 0  
Cash flow hedges 0  
Re-measurements of post-employment benefits (1) (37)
Total comprehensive income (1) (37)
Ending balance (1,741) (1,604)
OCI reserves [member]    
Disclosure of information about changes in other comprehensive income reserves [line items]    
Beginning balance (21,279) (22,152)
Other comprehensive income    
Exchange differences on translation of foreign operations (gains/(losses)) [1] (12,293) 1,719
Foreign exchange contracts recognized in equity in relation to the SAB combination   1,719
Cash flow hedges [1] (138) (134)
Cash flow hedges and cumulative translation adjustments in relation to Australia divestiture reclassified to profit ot loss (426)  
Re-measurements of post-employment benefits [1] (1) (37)
Total comprehensive income [1] (12,858) 1,548
Ending balance $ (34,137) $ (20,604)
[1] See Note 18 Changes in equity and earning per share.