v3.25.2
Bonds and Loans - Narrative (Details)
¥ in Millions, $ in Millions
Mar. 31, 2025
JPY (¥)
Mar. 31, 2025
USD ($)
Jun. 25, 2024
JPY (¥)
Apr. 25, 2024
JPY (¥)
Mar. 31, 2025
USD ($)
Oct. 06, 2024
JPY (¥)
Oct. 03, 2024
JPY (¥)
Jul. 12, 2024
USD ($)
Jul. 05, 2024
USD ($)
Mar. 31, 2024
JPY (¥)
Mar. 31, 2024
USD ($)
Dec. 31, 2020
USD ($)
Sep. 30, 2019
JPY (¥)
Dec. 31, 2017
USD ($)
Disclosure of detailed information about borrowings [line items]                            
Bonds ¥ 4,190,632                 ¥ 4,092,879        
Borrowing availability                         ¥ 700,000  
Bilateral Loans                            
Disclosure of detailed information about borrowings [line items]                            
Repayments of non-current borrowings       ¥ 50,000                    
Notional       ¥ 50,000                    
2024 Hybrid bonds (subordinated bonds)                            
Disclosure of detailed information about borrowings [line items]                            
Notional 460,000   ¥ 460,000                      
Borrowings maturity, term     60 years                      
Bonds 457,983                 0        
2024 USD Unsecured Senior Notes – fixed rate                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $         $ 3,000       $ 3,000          
Bonds 442,175                 0        
Unsecured Senior Notes Assumed in Shire Acquisition                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $         1,500     $ 1,500     $ 3,000      
Bonds 219,033                 439,725        
2024 Syndicated Hybrid Loans (Subordinated Loans)                            
Disclosure of detailed information about borrowings [line items]                            
Notional             ¥ 40,000              
2019 Hybrid bonds (subordinated bonds)                            
Disclosure of detailed information about borrowings [line items]                            
Notional 500,000         ¥ 500,000                
Bonds 0                 499,614        
JPY Syndicated Loans                            
Disclosure of detailed information about borrowings [line items]                            
Repayments of non-current borrowings 313,500                          
USD Syndicated Loans                            
Disclosure of detailed information about borrowings [line items]                            
Repayments of non-current borrowings | $   $ 1,500                        
USD 500 million, short term loan                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $         500                  
Commercial Paper                            
Disclosure of detailed information about borrowings [line items]                            
Notional 270,000                 317,000        
Bonds 270,000                 317,000        
2017 USD Syndicated Loans                            
Disclosure of detailed information about borrowings [line items]                            
Repayments of non-current borrowings 1,500                          
2017 USD Syndicated Loans | Hedge related to acquisition                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $                           $ 925
2017 USD Syndicated Loans | Interest rate swaps                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $                           $ 575
2020 USD Unsecured Senior Notes | Hedge related to acquisition                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $                       $ 5,750    
2018 USD Unsecured Senior Notes – fixed rate                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $         1,750                  
Bonds 259,681                 263,701        
2018 USD Unsecured Senior Notes – fixed rate | Hedge related to acquisition                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $                       1,750    
2020 USD Unsecured Senior Notes – fixed rate                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $         $ 7,000                  
Bonds ¥ 1,037,021                 ¥ 1,053,742        
2020 USD Unsecured Senior Notes – fixed rate | Hedge related to acquisition                            
Disclosure of detailed information about borrowings [line items]                            
Notional | $                       $ 4,000