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Segment Reporting - Summary of Segment Reporting (Detail)
HLS in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
HLS
Dec. 31, 2020
USD ($)
HLS
Dec. 31, 2019
USD ($)
HLS
Disclosure of operating segments [line items]      
Revenue $ 54,304 $ 46,881 $ 52,329
Profit from operations 13,824 9,620 16,098
Net finance income/(cost) (5,609) (7,697) (3,473)
Share of results of associates and joint ventures 248 156 152
Income tax expense (2,350) (1,932) (2,786)
Profit from continuing operations 6,114 147 9,990 [1]
Discontinued operations results 0 2,055 424
Profit/(loss) 6,114 2,202 $ 10,414
Segment assets (non-current) $ 193,678 $ 199,891  
Operating segments [member]      
Disclosure of operating segments [line items]      
Volume | HLS 582 531 561
Revenue $ 54,304 $ 46,881 $ 52,329
Profit from operations 13,824 9,620 16,098
Net finance income/(cost) (5,609) (7,697) (3,473)
Share of results of associates and joint ventures 248 156 152
Income tax expense (2,350) (1,932) (2,786)
Profit from continuing operations 6,114 147 9,990
Discontinued operations results 0 2,055 424
Profit/(loss) 6,114 2,202 10,414
Segment assets (non-current) 193,678 199,891 207,834
Gross capex $ 5,640 $ 3,781 $ 5,174
FTE 169,339 163,695 171,915
Operating segments [member] | North America [member]      
Disclosure of operating segments [line items]      
Volume | HLS 107 107 108
Revenue $ 16,257 $ 15,622 $ 15,488
Profit from operations 5,110 5,147 5,341
Segment assets (non-current) 63,722 63,765 63,725
Gross capex $ 868 $ 646 $ 679
FTE 19,691 20,281 20,040
Operating segments [member] | Middle America [Member]      
Disclosure of operating segments [line items]      
Volume | HLS 141 121 134
Revenue $ 12,541 $ 10,032 $ 11,912
Profit from operations 4,888 3,885 5,384
Segment assets (non-current) 67,516 72,331 76,168
Gross capex $ 1,307 $ 829 $ 1,286
FTE 51,969 48,751 52,412
Operating segments [member] | South America [Member]      
Disclosure of operating segments [line items]      
Volume | HLS 157 144 140
Revenue $ 9,494 $ 8,092 $ 9,790
Profit from operations 2,305 2,350 3,094
Segment assets (non-current) 12,917 12,348 13,452
Gross capex $ 1,154 $ 727 $ 1,063
FTE 42,209 40,630 41,603
Operating segments [member] | EMEA [member]      
Disclosure of operating segments [line items]      
Volume | HLS 87 76 86
Revenue $ 8,032 $ 6,835 $ 7,911
Profit from operations 1,472 (1,722) 1,746
Segment assets (non-current) 34,098 35,578 39,442
Gross capex $ 1,051 $ 768 $ 1,208
FTE 22,215 22,357 23,804
Operating segments [member] | Asia Pacific [member]      
Disclosure of operating segments [line items]      
Volume | HLS 88 82 93
Revenue $ 6,848 $ 5,648 $ 6,544
Profit from operations 1,569 1,062 1,598
Segment assets (non-current) 13,453 13,845 13,450
Gross capex $ 605 $ 508 $ 626
FTE 26,095 26,510 29,482
Operating segments [member] | Global export and holding companies [member]      
Disclosure of operating segments [line items]      
Volume | HLS 2 1 1
Revenue $ 1,133 $ 652 $ 685
Profit from operations (1,520) (1,103) (1,064)
Segment assets (non-current) 1,973 2,024 1,597
Gross capex $ 655 $ 303 $ 312
FTE 7,160 5,166 4,574
[1] The consolidated statement of cash flows for 2019 has been restated to include operating, investing and financing activities from discontinued operations separately in the cashflow statement. In addition, the 2019 cash flow from investing activities has been restated to reflect reclassification of the cash flow hedges in relation to the Australia divestiture reported in the financing activities in 2019 and recycled to profit or loss upon the completion of the transaction.