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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	8 Months Ended
	Sep. 11, 2016	Jan. 03, 2016
Fixed Rate Senior Notes [Member] | 2012 Recapitalization [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount of outstanding debt	$ 923.0	$ 962.7
Fair value of debt outstanding	945.2	991.6
Five Year Fixed Rate Notes [Member] | 2015 Recapitalization [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount of outstanding debt	496.3	500.0
Fair value of debt outstanding	$ 501.2	489.5
Debt instrument, term	5 years
Ten Year Fixed Rate Notes [Member] | 2015 Recapitalization [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount of outstanding debt	$ 794.0	800.0
Fair value of debt outstanding	$ 801.1	$ 781.6
Debt instrument, term	10 years

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611

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X

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

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+ References

No definition available.

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