Other Expense, net - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Impairment of equity method investment		$ 2.1	$ 23.5
Amount of guarantee obligations given by joint ventures	20
Provisions for bad debt on receivables due from joint venture	2
Other - than - temporary impairment, gross	26
Other - than - temporary impairment, net	18
Other - than - temporary impairment, net per share	$ 0.09
Write-down of investment (expense)	4
Carrying value of the investment	$ 0

Amount of guarantee obligations given by joint ventures.

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- Definition

Equity method investment other than temporary impairment gross.

+ References

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- Definition

Equity method investment other than temporary impairment net.

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- Definition

Equity Method Investment Other Than Temporary Impairment Per Share

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- Definition

Provisions for bad debt on receivables due from joint venture.

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No definition available.

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- Definition

Write Down Of Investment Expense

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No definition available.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 35

-Paragraph 32

-URI http://asc.fasb.org/extlink&oid=7658923&loc=d3e32787-111569

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ 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 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

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