v3.26.1
Receivables from Financial Services - Changes in Allowance for Credit Losses on Receivables from Financial Services (Detail) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of financial assets [line items]      
Write-offs    
Retail [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 78,450 ¥ 65,479 ¥ 46,083
Remeasurement 84,411 70,506 49,454
Write-offs (67,409) (54,155) (36,663)
Exchange differences on translating foreign operations 8,926 (3,380) 6,605
Balance at end of year 104,378 78,450 65,479
Finance lease [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 687 555 465
Remeasurement 249 158 77
Write-offs (189) (29) (43)
Exchange differences on translating foreign operations 49 3 56
Balance at end of year 796 687 555
Wholesale [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 2,988 2,965 2,104
Remeasurement (100) 299 526
Write-offs (45) (82) 6
Exchange differences on translating foreign operations 357 (194) 329
Balance at end of year 3,200 2,988 2,965
Financial Services receivables [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 82,125 68,999 48,652
Remeasurement 84,560 70,963 50,057
Write-offs (67,643) (54,266) (36,700)
Exchange differences on translating foreign operations 9,332 (3,571) 6,990
Balance at end of year 108,374 82,125 68,999
12-month ECL [member] | Retail [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 41,028 37,139 26,467
Remeasurement 7,039 5,422 6,823
Write-offs
Exchange differences on translating foreign operations 4,174 (1,533) 3,849
Balance at end of year 52,241 41,028 37,139
12-month ECL [member] | Finance lease [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 177 255 192
Remeasurement 52 (79) 46
Write-offs
Exchange differences on translating foreign operations 13 1 17
Balance at end of year 242 177 255
12-month ECL [member] | Wholesale [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 1,668 1,502 976
Remeasurement 164 172 377
Write-offs  
Exchange differences on translating foreign operations 161 (6) 149
Balance at end of year 1,993 1,668 1,502
12-month ECL [member] | Financial Services receivables [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 42,873 38,896 27,635
Remeasurement 7,255 5,515 7,246
Write-offs  
Exchange differences on translating foreign operations 4,348 (1,538) 4,015
Balance at end of year 54,476 42,873 38,896
Lifetime ECL [member] | Not credit-impaired [member] | Retail [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 19,489 14,278 11,072
Remeasurement 2,928 5,695 1,732
Write-offs
Exchange differences on translating foreign operations 1,801 (484) 1,474
Balance at end of year 24,218 19,489 14,278
Lifetime ECL [member] | Not credit-impaired [member] | Finance lease [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 198 94 69
Remeasurement (14) 105 15
Write-offs
Exchange differences on translating foreign operations 16 (1) 10
Balance at end of year 200 198 94
Lifetime ECL [member] | Not credit-impaired [member] | Wholesale [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 35 62 10
Remeasurement (15) (27) 49
Write-offs  
Exchange differences on translating foreign operations 4   3
Balance at end of year 24 35 62
Lifetime ECL [member] | Not credit-impaired [member] | Financial Services receivables [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 19,722 14,434 11,151
Remeasurement 2,899 5,773 1,796
Write-offs  
Exchange differences on translating foreign operations 1,821 (485) 1,487
Balance at end of year 24,442 19,722 14,434
Lifetime ECL [member] | Credit-impaired [member] | Retail [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 17,933 14,062 8,544
Remeasurement 74,444 59,389 40,899
Write-offs (67,409) (54,155) (36,663)
Exchange differences on translating foreign operations 2,951 (1,363) 1,282
Balance at end of year 27,919 17,933 14,062
Lifetime ECL [member] | Credit-impaired [member] | Finance lease [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 312 206 204
Remeasurement 211 132 16
Write-offs (189) (29) (43)
Exchange differences on translating foreign operations 20 3 29
Balance at end of year 354 312 206
Lifetime ECL [member] | Credit-impaired [member] | Wholesale [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 1,285 1,401 1,118
Remeasurement (249) 154 100
Write-offs (45) (82) 6
Exchange differences on translating foreign operations 192 (188) 177
Balance at end of year 1,183 1,285 1,401
Lifetime ECL [member] | Credit-impaired [member] | Financial Services receivables [member]      
Disclosure of financial assets [line items]      
Balance at beginning of year 19,530 15,669 9,866
Remeasurement 74,406 59,675 41,015
Write-offs (67,643) (54,266) (36,700)
Exchange differences on translating foreign operations 3,163 (1,548) 1,488
Balance at end of year ¥ 29,456 ¥ 19,530 ¥ 15,669