Revenue - Summary of Contract Assets and Contract liabilities (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2022	Mar. 31, 2021	Apr. 01, 2020
Receivables from contracts with customers [abstract]
Receivables from contracts with customers	[1]	¥ 1,382,377	¥ 1,177,027	¥ 1,127,622
Contract assets	[2]	16,785	12,204	13,985
Contract liabilities	[3]	¥ 366,227	¥ 294,911	¥ 271,286

[1] Receivables from contracts with customers are included in the consolidated statements of financial position as “Trade and other receivables, and contract assets” and “Other financial assets,” non-current.

[2] Contract assets are included in the consolidated statements of financial position as “Trade and other receivables, and contract assets” and “Other non-current assets.”

[3] Contract liabilities are included in the consolidated statements of financial position as “Other current liabilities” and “Other non-current liabilities.”