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Net Earnings (Loss) Per Common Share - Revised Diluted Weighted Average Number of Common Shares Outstanding (Detail) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Jun. 30, 2014 Scenario, Previously Reported | Mar. 31, 2014 Scenario, Previously Reported | Dec. 31, 2013 Scenario, Previously Reported | Sep. 30, 2013 Scenario, Previously Reported | Jun. 30, 2013 Scenario, Previously Reported | Mar. 31, 2013 Scenario, Previously Reported | Jun. 30, 2014 Scenario, Previously Reported | Jun. 30, 2013 Scenario, Previously Reported | Jun. 30, 2013 Scenario, Previously Reported | Dec. 31, 2013 Scenario, Previously Reported | Jun. 30, 2014 Restatement Adjustment | Mar. 31, 2014 Restatement Adjustment | Dec. 31, 2013 Restatement Adjustment | Sep. 30, 2013 Restatement Adjustment | Jun. 30, 2013 Restatement Adjustment | Mar. 31, 2013 Restatement Adjustment | Jun. 30, 2014 Restatement Adjustment | Jun. 30, 2013 Restatement Adjustment | Jun. 30, 2013 Restatement Adjustment | Dec. 31, 2013 Restatement Adjustment
Disclosure - Net Earnings (Loss) Per Common Share - Revised Diluted Weighted Average Number of Common Shares Outstanding (Detail) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted | 213.5 | 215.3 | 215.3 | 214.9 | 214.7 | 214.5 | 213.9 | 213.7 | 213.6 | 212.7 | 214.6 | 213.2 | 213.4 | 213.5 | 216.4 | 216.0 | 215.4 | 215.3 | 215.0 | 214.3 | 216.2 | 214.7 | 214.9 | 215.1

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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
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