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Includes items that are either isolated or temporary in nature that are excluded from the Company's segment profit measure, including restructuring charges and asset impairments.

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Amount, before tax, of income (loss) attributable to parent. Includes, but is not limited to, income (loss) from continuing operations, discontinued operations and equity method investments.

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The net amount of operating interest income (expense).

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Segment Information - Revenue by Segment and Reconciliation of Segment Profit to Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Oct. 03, 2020	Jul. 04, 2020	Sep. 28, 2019	Oct. 03, 2020	Sep. 28, 2019
Revenues
Total revenues	$ 2,735		$ 3,259	$ 7,984	$ 9,595
Reconciliation of segment profit to income from continuing operations before income taxes
Special charges	(7)		0	(124)	0
Income before income taxes	116		241	67	732
Operating Segment
Reconciliation of segment profit to income from continuing operations before income taxes
Segment profit	189		297	427	930
Reconciling Items
Reconciliation of segment profit to income from continuing operations before income taxes
Corporate expenses and other, net	(28)		(17)	(72)	(88)
Special charges	(7)		0	(124)	0
Inventory charge	0	$ (55)	0		0
Textron Aviation
Revenues
Total revenues	795		1,201	2,414	3,458
Textron Aviation \| Operating Segment
Reconciliation of segment profit to income from continuing operations before income taxes
Special charges				(60)
Bell
Revenues
Total revenues	793		783	2,438	2,293
Textron Systems
Revenues
Total revenues	302		311	956	926
Textron Systems \| Operating Segment
Reconciliation of segment profit to income from continuing operations before income taxes
Special charges				(40)
Industrial
Revenues
Total revenues	832		950	2,134	2,871
Industrial \| Operating Segment
Reconciliation of segment profit to income from continuing operations before income taxes
Special charges	(5)			(20)
Finance
Revenues
Total revenues	13		14	42	47
Finance \| Operating Segment
Reconciliation of segment profit to income from continuing operations before income taxes
Segment profit	1		5	8	17
Manufacturing group \| Reconciling Items
Reconciliation of segment profit to income from continuing operations before income taxes
Interest expense, net for Manufacturing group	(38)		(39)	(109)	(110)
Manufacturing group \| Textron Aviation \| Operating Segment
Revenues
Total revenues	795		1,201	2,414	3,458
Reconciliation of segment profit to income from continuing operations before income taxes
Segment profit	(29)		104	(92)	315
Manufacturing group \| Bell \| Operating Segment
Revenues
Total revenues	793		783	2,438	2,293
Reconciliation of segment profit to income from continuing operations before income taxes
Segment profit	119		110	352	317
Manufacturing group \| Textron Systems \| Operating Segment
Revenues
Total revenues	302		311	956	926
Reconciliation of segment profit to income from continuing operations before income taxes
Segment profit	40		31	103	108
Manufacturing group \| Industrial \| Operating Segment
Revenues
Total revenues	832		950	2,134	2,871
Reconciliation of segment profit to income from continuing operations before income taxes
Segment profit	58		47	56	173
Finance group \| Finance \| Operating Segment
Revenues
Total revenues	$ 13		$ 14	$ 42	$ 47