v3.26.3
SEGMENT INFORMATION - Segment Revenue by Business Unit (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Total revenues $ 12,642 $ 9,969 $ 33,084 $ 27,112
Operating segments, inclusive of intersegment sales        
Segment Reporting [Line Items]        
Total revenues 12,671 10,075 33,175 27,405
Operating segments, inclusive of intersegment sales | Power        
Segment Reporting [Line Items]        
Total revenues 6,067 4,863 16,516 14,097
Operating segments, inclusive of intersegment sales | Power | Gas Power        
Segment Reporting [Line Items]        
Total revenues 5,117 3,948 13,610 11,464
Operating segments, inclusive of intersegment sales | Power | Nuclear Power        
Segment Reporting [Line Items]        
Total revenues 719 664 2,294 1,975
Operating segments, inclusive of intersegment sales | Power | Hydro Power        
Segment Reporting [Line Items]        
Total revenues 231 251 613 658
Operating segments, inclusive of intersegment sales | Electrification        
Segment Reporting [Line Items]        
Total revenues 3,862 2,565 10,459 6,566
Operating segments, inclusive of intersegment sales | Electrification | Power Transmission        
Segment Reporting [Line Items]        
Total revenues 1,868 811 5,124 2,262
Operating segments, inclusive of intersegment sales | Electrification | Grid Systems Integration        
Segment Reporting [Line Items]        
Total revenues 1,002 677 2,499 1,646
Operating segments, inclusive of intersegment sales | Electrification | Power Conversion & Storage        
Segment Reporting [Line Items]        
Total revenues 569 621 1,585 1,413
Operating segments, inclusive of intersegment sales | Electrification | Grid Automation & Software        
Segment Reporting [Line Items]        
Total revenues 424 456 1,251 1,246
Operating segments, inclusive of intersegment sales | Wind        
Segment Reporting [Line Items]        
Total revenues 2,741 2,647 6,200 6,742
Operating segments, inclusive of intersegment sales | Wind | Onshore Wind        
Segment Reporting [Line Items]        
Total revenues 2,468 2,453 5,376 6,118
Operating segments, inclusive of intersegment sales | Wind | Offshore Wind        
Segment Reporting [Line Items]        
Total revenues $ 273 $ 195 $ 824 $ 624