Debt and Credit Facilities - Summary of debt (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Senior Unsecured Revolving Credit Facility, Expiring September 2021
Debt
Maximum borrowing capacity	$ 1,000
Portion available for issuance of letters of credit against facility	100
Amount borrowed against facility	0
Letters of credit issued against credit facility	10
Manufacturing group
Debt
Debt	3,066	$ 3,088
Less: Short-term debt and current portion of long-term debt	(258)	(14)
Total Long-term debt	2,808	3,074
Manufacturing group \| 7.25% due 2019
Debt
Debt	$ 250	$ 250
Interest rate (as a percent)	7.25%	7.25%
Manufacturing group \| 6.625% due 2020
Debt
Unsecured Debt	$ 190	$ 201
Interest rate (as a percent)	6.625%	6.625%
Manufacturing group \| Variable-rate notes due 2020 (3.17% and 1.96%, respectively)
Debt
Debt	$ 350	$ 350
Weighted average interest rate (as a percent)	3.17%	1.96%
Manufacturing group \| 3.65% due 2021
Debt
Unsecured Debt	$ 250	$ 250
Interest rate (as a percent)	3.65%	3.65%
Manufacturing group \| 5.95% due 2021
Debt
Unsecured Debt	$ 250	$ 250
Interest rate (as a percent)	5.95%	5.95%
Manufacturing group \| 4.30% due 2024
Debt
Unsecured Debt	$ 350	$ 350
Interest rate (as a percent)	4.30%	4.30%
Manufacturing group \| 3.875% due 2025
Debt
Unsecured Debt	$ 350	$ 350
Interest rate (as a percent)	3.875%	3.875%
Manufacturing group \| 4.00% due 2026
Debt
Unsecured Debt	$ 350	$ 350
Interest rate (as a percent)	4.00%	4.00%
Manufacturing group \| 3.65% due 2027
Debt
Unsecured Debt	$ 350	$ 350
Interest rate (as a percent)	3.65%
Manufacturing group \| 3.375% due 2028
Debt
Unsecured Debt	$ 300	300
Interest rate (as a percent)	3.375%
Manufacturing group \| Other (weighted-average rate of 2.63% and 3.04%, respectively)
Debt
Debt	$ 76	$ 87
Weighted average interest rate (as a percent)	2.63%	3.04%
Finance group
Debt
Debt	$ 718	$ 824
Finance group \| 2.26% note due 2019
Debt
Debt	$ 150	$ 150
Interest rate (as a percent)	2.26%	2.26%
Finance group \| Variable-rate note due 2020 (3.57% and 2.38%, respectively)
Debt
Debt	$ 150	$ 200
Weighted average interest rate (as a percent)	3.57%	2.38%
Finance group \| Fixed-rate notes due 2018-2028 (weighted-average rate of 3.17% and 3.15%, respectively)
Debt
Debt	$ 84	$ 131
Weighted average interest rate (as a percent)	3.17%	3.15%
Finance group \| Variable-rate notes due 2018-2027 (weighted-average rate of 3.99% and 2.99%, respectively)
Debt
Debt	$ 35	$ 44
Weighted average interest rate (as a percent)	3.99%	2.99%
Finance group \| Fixed-to-Floating Rate Junior Subordinated Notes (4.35% and 3.15%, respectively)
Debt
Debt	$ 299	$ 299
Interest rate (as a percent)	4.35%	3.15%

Letters of credit issued against credit facility.

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- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

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No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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