Accumulated Other Comprehensive Income , Equity and Redeemable Noncontrolling Interests - Changes in Accumulated Other Comprehensive Income (Loss) (Paranthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Equity [Abstract]
Other comprehensive income (loss) related to benefit plan liability, tax	$ (211)	$ (87)	$ (755)	$ (143)
Other comprehensive income (loss) related to fair value change of derivatives, tax	170	$ (113)	830	(194)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax			300
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax				1,882
Other comprehensive income (loss), reclassification adjustment from AOCI for sale of securities, tax				$ 736
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	$ 4,332		$ 18,265