Stockholders' Equity (Deficit) Accumulated Other Comprehensive Income and Redeemable Noncontrolling Interest - Change in Stockholders' Equity (Deficit), Accumulated Other Comprehensive Income and Redeemable Noncontrolling Interest (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified |
9 Months Ended |
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Sep. 30, 2014
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Increase (Decrease) in Stockholders' Equity [Roll Forward] | |
Changes in defined benefit pension and other post-retirement benefit plans, tax Provision | $ 2.8 |
Unrealized loss on available-for-sale investment, tax benefit | 3.2 |
Benefit Plan Liabilities [Member]
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|
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |
Changes in defined benefit pension and other post-retirement benefit plans, tax Provision | 2.8 |
Unrealized Gain (Loss) on Available- For-Sale Investments [Member]
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Increase (Decrease) in Stockholders' Equity [Roll Forward] | |
Unrealized loss on available-for-sale investment, tax benefit | $ 3.2 |