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Earnings Per Share (Antidilutive Securities) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Stock options [Member]
Antidilutive securities excluded from computation of earnings per share [Line Items]
Antidilutive securities not included in the computation of earnings per share	4,214	2,133	3,799	2,041
Nonvested restricted stock units [Member]
Antidilutive securities excluded from computation of earnings per share [Line Items]
Antidilutive securities not included in the computation of earnings per share	200	16	211	63
Nonvested performance-based share units [Member]
Antidilutive securities excluded from computation of earnings per share [Line Items]
Antidilutive securities not included in the computation of earnings per share	330	197	295	180

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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- Definition

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.

+ References

No definition available.

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