Operations by Business Segment and Geographic Area - Reconciliation to Consolidated Amounts (Details 6) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of total segment profit to earnings from continuing operations before taxes
Gain related to a partial sale of a subsidiary									$ 68,162
Pension settlement charge									(239,896)
Corporate general and administrative expense									(168,329)	$ (182,711)	$ (175,148)
Interest income (expense), net									(28,100)	(11,400)	(12,500)
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES	$ (39,300)	$ 278,200	$ 238,800	$ 248,900	$ 304,700	$ 343,400	$ 285,300	$ 271,500	726,552	1,204,909	1,177,599
Reportable segments
Reconciliation of total segment profit to earnings from continuing operations before taxes
Total segment profit (loss)									1,032,200	1,262,400	1,209,900
Reconciling item | Noncontrolling interests
Reconciliation of total segment profit to earnings from continuing operations before taxes
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES									$ 62,500	$ 136,600	$ 155,300