Accumulated Other Comprehensive Income , Equity and Redeemable Noncontrolling Interests - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance			$ (139,243)
Ending Balance	(183,236)		(139,243)
Cumulative currency translation adjustment [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance	(50,371)	5,712
Other comprehensive income (loss) before reclassifications	(47,261)	(2,020)
Amounts reclassified from accumulated other comprehensive income (loss)	(1,909)	0
Net current period other comprehensive income (loss)	(49,170)	(2,020)
Ending Balance	(99,541)	3,692
Benefit plan liability [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance	(86,861)	(33,406)
Other comprehensive income (loss) before reclassifications	5,377	159
Amounts reclassified from accumulated other comprehensive income (loss)	384	(166)
Net current period other comprehensive income (loss)	5,761	(7)
Ending Balance	(81,100)	(33,413)
Unrealized gains on investment securities [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance		0
Other comprehensive income (loss) before reclassifications		1,146
Amounts reclassified from accumulated other comprehensive income (loss)		0
Net current period other comprehensive income (loss)		1,146
Ending Balance		1,146
Fair value change of derivatives [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance	(2,011)	0
Other comprehensive income (loss) before reclassifications	(683)	73
Amounts reclassified from accumulated other comprehensive income (loss)	99	5
Net current period other comprehensive income (loss)	(584)	78
Ending Balance	(2,595)	78
Accumulated other comprehensive loss [Member]
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance	(139,243)	(27,694)
Other comprehensive income (loss) before reclassifications	(42,567)	(642)
Amounts reclassified from accumulated other comprehensive income (loss)	(1,426)	(161)
Net current period other comprehensive income (loss)	(43,993)	(803)
Ending Balance	$ (183,236)	$ (28,497)