Income Taxes Income Taxes - Reconciliation (Details 3)	12 Months Ended
Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation
U.S. federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	(2.40%)	0.80%	0.60%
Non-deductible share-based compensation expense	3.60%	1.00%	0.50%
Valuation allowance	(0.40%)	0.80%	(0.10%)
Tax-exempt interest income	(1.20%)	(0.60%)	(0.70%)
Foreign earnings at other than U.S. rates	(0.50%)	(2.20%)	(2.90%)
Settlements with tax authorities	(4.20%)	(1.70%)	0.00%
R&D credit	(2.10%)	(1.30%)	(1.30%)
Other	(1.10%)	0.50%	0.10%
Effective income tax rates	26.70%	32.30%	31.20%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Section S99
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements.

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