Segment Reporting Segment Adjusted EBITDA (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Segment Reporting Information [Line Items]
Depreciation and amortization (excluding integration and restructuring expenses)	$ (985)	$ (919)	$ (907)
Integration and restructuring expenses	(102)	(297)	(583)
Deal costs	(19)	(23)	0
Unrealized gains/(losses) on commodity hedges	57	(21)	(19)
Impairment losses	(1,899)	(15,936)	(49)
Equity award compensation expense (excluding integration and restructuring expenses)	(46)	(33)	(49)
Operating income/(loss)	3,070	(10,205)	6,057
Interest expense	1,361	1,284	1,234
Other expense/(income)	(952)	(168)	(627)
Income/(loss) before income taxes	2,661	(11,321)	5,450
United States
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	4,809	5,218	5,873
Canada
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	487	608	636
EMEA
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	661	724	673
Rest of World
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	363	635	590
General corporate expenses
Segment Reporting Information [Line Items]
Segment Adjusted EBITDA	$ (256)	$ (161)	$ (108)

Depreciation and amortization, excluding integration and restructuring expenses

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Equity award compensation expense (excluding integration and restructuring expenses)

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Integration and restructuring expenses

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Segment Adjusted EBITDA

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Unrealized Gain / (Loss) on Commodity Hedge Contracts

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount of the cost of borrowed funds accounted for as interest expense.

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

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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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