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-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
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Earnings Per Share (Narrative) (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Stock Options, Restricted Stock Units, Conversion of Notes, and Warrants Under Warrant Agreement
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares (in shares)	102	2	103	103
2.125% Convertible Senior Notes due 2026
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stated interest rate	2.125%		2.125%