v3.25.2
Operating Segment and Revenue Information - Narrative (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Disclosure of major customers [line items]      
Revenue from contracts with customers ¥ 4,581,551 ¥ 4,263,762 ¥ 4,027,478
Revenue that was included in contract liability balance at beginning of period 5,634 5,526 49,319
Revenue from performance obligations satisfied or partially satisfied in previous periods 97,560 80,794 79,251
Cencora Group | Customer risk concentration, net sales      
Disclosure of major customers [line items]      
Revenue from contracts with customers 577,017 579,065 575,294
McKesson Group | Customer risk concentration, net sales      
Disclosure of major customers [line items]      
Revenue from contracts with customers ¥ 592,323 578,767 540,356
Cardinal Health Group | Customer risk concentration, net sales      
Disclosure of major customers [line items]      
Revenue from contracts with customers   ¥ 436,951 ¥ 424,527