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Other Expenses - Summary of Other Expenses (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified | Apr. 16, 2012 $1 billion syndicated revolving credit facility | Dec. 31, 2013 $1 billion syndicated revolving credit facility Collateralized | Jun. 20, 2011 $1 billion syndicated revolving credit facility Collateralized | Dec. 31, 2013 $500 million syndicated revolving credit facility Collateralized | Apr. 17, 2012 $500 million syndicated revolving credit facility Collateralized
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Components of Other Income (Expense) [Line Items] |  |  |  |  |
Long-term revolving credit facility | $ 1,000.0 | $ 1,000.0 | $ 1,000.0 | $ 500.0 | $ 500.0

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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