Other Comprehensive Income - Changes in Accumulated Other Comprehensive Loss by Component (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Components of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance	$ (720,211)	$ (397,655)
Other comprehensive income (loss) before reclassifications, net of tax	(113,309)	102
Amounts reclassified from accumulated other comprehensive loss, net of tax	5,838	3,791
Net current period other comprehensive income (loss)	(107,471)	3,893
Ending balance	(827,682)	(393,762)
Pension and Other Post-Retirement Benefits [Member]
Components of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance	(533,213)	(360,036)
Amounts reclassified from accumulated other comprehensive loss, net of tax	5,838	3,791
Net current period other comprehensive income (loss)	5,838	3,791
Ending balance	(527,375)	(356,245)
Foreign Currency Translation [Member]
Components of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance	(186,998)	(37,619)
Other comprehensive income (loss) before reclassifications, net of tax	(113,309)	102
Net current period other comprehensive income (loss)	(113,309)	102
Ending balance	$ (300,307)	$ (37,517)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References+ Details