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Commitments and Contingencies - Summary of Information Concerning Recorded Liabilities for Environmental Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accrual for Environmental Loss Contingencies
Beginning balance	$ 22	$ 20	$ 537
Accruals for environmental matters deemed probable and reasonably estimable	1	2	340
Less: Environmental liability payments	(1)		(179)
Ending balance	$ 22	$ 22	20
Honeywell
Accrual for Environmental Loss Contingencies
Less: Change due to the Reimbursement Agreement payments			(86)
Less: Liabilities subject to the Reimbursement Agreement payments			$ (592)

X

- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.

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Amount of increase (decrease) in the obligation for environmental loss contingencies from business acquisitions (divestitures).

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Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

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Amount of cash outflow to settle environmental loss contingencies.

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