JOHNSON CONTROLS, INC. SAVINGS AND INVESTMENT MASTER TRUST - Schedule of Master Trust Net Assets and Plan's Interest in Master Trust (Details) - EBP 026 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Nonconsolidated, Plan Interest in Master Trust
EBP, Master Trust [Line Items]
Total investment at fair value	$ 7,499,947,981	$ 6,935,174,439
EBP, Nonconsolidated, Plan Interest in Master Trust \| Common Stock Funds \| Fair Value, Inputs, Level 1
EBP, Master Trust [Line Items]
Total investment at fair value	505,567,796	381,220,767
EBP, Nonconsolidated, Plan Interest in Master Trust \| Other Separate Accounts \| Fair Value, Inputs, Level 2
EBP, Master Trust [Line Items]
Total investment at fair value	6,994,380,185	6,553,953,672
EBP, Nonconsolidated, Master Trust
EBP, Master Trust [Line Items]
Total investment at fair value	7,676,102,345	7,080,136,143
EBP, Nonconsolidated, Master Trust \| Fair Value, Inputs, Level 1
EBP, Master Trust [Line Items]
Total investment at fair value	518,328,741	389,204,925
EBP, Nonconsolidated, Master Trust \| Fair Value, Inputs, Level 2
EBP, Master Trust [Line Items]
Total investment at fair value	7,157,773,604	6,690,931,218
EBP, Nonconsolidated, Master Trust \| Common Stock Funds
EBP, Master Trust [Line Items]
Total investment at fair value	518,328,741	389,204,925
EBP, Nonconsolidated, Master Trust \| Common Stock Funds \| Fair Value, Inputs, Level 1
EBP, Master Trust [Line Items]
Total investment at fair value	518,328,741	389,204,925
EBP, Nonconsolidated, Master Trust \| Common Stock Funds \| Fair Value, Inputs, Level 2
EBP, Master Trust [Line Items]
Total investment at fair value	0	0
EBP, Nonconsolidated, Master Trust \| Other Separate Accounts
EBP, Master Trust [Line Items]
Total investment at fair value	7,157,773,604	6,690,931,218
EBP, Nonconsolidated, Master Trust \| Other Separate Accounts \| Fair Value, Inputs, Level 1
EBP, Master Trust [Line Items]
Total investment at fair value	0	0
EBP, Nonconsolidated, Master Trust \| Other Separate Accounts \| Fair Value, Inputs, Level 2
EBP, Master Trust [Line Items]
Total investment at fair value	$ 7,157,773,604	$ 6,690,931,218

Fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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