Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Increase (Decrease) in Stockholders' Equity
Beginning of period	$ 5,233	$ 5,692	$ 5,192	$ 5,647
Net income	217	224	396	413
Other comprehensive income (loss)	21	(42)	47	32
Share-based compensation activity	28	64	71	105
Dividends declared	(4)	(5)	(9)	(10)
Purchases of common stock	(159)	(571)	(361)	(915)
End of period	$ 5,336	$ 5,362	$ 5,336	$ 5,362
Dividends per share of common stock	$ 0.02	$ 0.02	$ 0.04	$ 0.04
Common Stock
Increase (Decrease) in Stockholders' Equity
Beginning of period	$ 30	$ 33	$ 30	$ 33
End of period	30	33	30	33
Capital Surplus
Increase (Decrease) in Stockholders' Equity
Beginning of period	1,689	1,710	1,646	1,669
Share-based compensation activity	28	64	71	105
End of period	1,717	1,774	1,717	1,774
Treasury Stock
Increase (Decrease) in Stockholders' Equity
Beginning of period	(331)	(392)	(129)	(48)
Purchases of common stock	(159)	(571)	(361)	(915)
End of period	(490)	(963)	(490)	(963)
Retained Earnings
Increase (Decrease) in Stockholders' Equity
Beginning of period	5,581	5,642	5,407	5,368
Net income	217	224	396	413
Dividends declared	(4)	(5)	(9)	(10)
End of period	5,794	5,861	5,794	5,861
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity
Beginning of period	(1,736)	(1,301)	(1,762)	(1,375)
Other comprehensive income (loss)	21	(42)	47	32
End of period	$ (1,715)	$ (1,343)	$ (1,715)	(1,343)
ASC 606
Increase (Decrease) in Stockholders' Equity
Adoption of ASC 606				90
ASC 606 \| Retained Earnings
Increase (Decrease) in Stockholders' Equity
Adoption of ASC 606				$ 90

Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of the cumulative effect on retained earnings net of related income tax effect.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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