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Revolving Credit Facilities - Additional Information (Detail) - Unsecured Debt [Member] - Revolving Credit Facility [Member] - USD ($) | 6 Months Ended |
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Jun. 30, 2018 | Jul. 02, 2018
Debt Instrument [Line Items] |  |
Covenant compliance | The Company was in compliance with these financial covenants at June 30, 2018. |
LIBOR [Member] |  |
Debt Instrument [Line Items] |  |
Specified spread line of credit facility | 1.20% |
Alternative Base Rate [Member] |  |
Debt Instrument [Line Items] |  |
Specified spread line of credit facility | 0.20% |
J.P. Morgan Chase Bank, N.A., Wells Fargo Securities, LLC, Citizens Bank, N.A., RBC Capital Markets and U.S. Bank National Association [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit facility competitive bid option on periodic interest rates | up to 50% of the facility |
Facility fee | 0.25% |
Revolving credit facility maturity extension option | two six-month options to extend the maturity to September 2022 upon the Company’s request (subject to satisfaction of certain conditions) |
J.P. Morgan Chase Bank, N.A., Wells Fargo Securities, LLC, Citizens Bank, N.A., RBC Capital Markets and U.S. Bank National Association [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Unsecured revolving credit facility borrowing capacity | $ 950,000,000 |
Accordion feature | 1,450,000,000 |
PNC Bank National Association [Member] |  |
Debt Instrument [Line Items] |  |
Unsecured revolving credit facility | $ 50,000,000 |
PNC Bank National Association [Member] | Subsequent Event [Member] |  |
Debt Instrument [Line Items] |  |
Unsecured revolving credit facility |  | $ 20,000,000

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- Definition The increased amount of the facility the Company may expand to provided that new or existing lenders agree to the existing terms of the facility and increase their commitment level. + References No definition available. + Details
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- Definition Line of credit facility competitive bid option on periodic interest rates. + References No definition available. + Details
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- Definition Revolving credit facility maturity extension option. + References No definition available. + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Identification of whether the entity has been in compliance with any credit facility debt covenants during the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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