Activity and Liability Balances Recorded as part of Global Operations Strategy Initiatives and Reorganization and Reinvestment Initiatives as well as Current Estimated Future Charges Relating Initiatives (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended			9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended			9 Months Ended	3 Months Ended			9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2011 Global Operations Strategy	Sep. 30, 2011 Global Operations Strategy	Dec. 31, 2011 Global Operations Strategy	Sep. 30, 2012 Global Operations Strategy Workforce Reductions	Jun. 30, 2012 Global Operations Strategy Workforce Reductions	Mar. 31, 2012 Global Operations Strategy Workforce Reductions	Sep. 30, 2012 Global Operations Strategy Workforce Reductions	Mar. 31, 2012 Global Operations Strategy Transition Costs	Sep. 30, 2012 Global Operations Strategy Transition Costs	Sep. 30, 2012 Reorganization and Reinvestment Initiatives	Sep. 30, 2011 Reorganization and Reinvestment Initiatives	Sep. 30, 2012 Reorganization and Reinvestment Initiatives	Sep. 30, 2011 Reorganization and Reinvestment Initiatives	Sep. 30, 2012 Reorganization and Reinvestment Initiatives Workforce Reductions	Jun. 30, 2012 Reorganization and Reinvestment Initiatives Workforce Reductions	Mar. 31, 2012 Reorganization and Reinvestment Initiatives Workforce Reductions	Sep. 30, 2012 Reorganization and Reinvestment Initiatives Workforce Reductions	Sep. 30, 2012 Global Operations Strategy, Reorganization and Reinvestment Initiatives	Jun. 30, 2012 Global Operations Strategy, Reorganization and Reinvestment Initiatives	Mar. 31, 2012 Global Operations Strategy, Reorganization and Reinvestment Initiatives	Sep. 30, 2012 Global Operations Strategy, Reorganization and Reinvestment Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring payable, beginning balance								$ 501,000	$ 660,000	$ 1,219,000	$ 1,219,000	$ 55,000	$ 55,000					$ 1,050,000	$ 2,442,000	$ 5,357,000	$ 5,357,000	$ 1,551,000	$ 3,102,000	$ 6,631,000	$ 6,631,000
Charges to cost and expense	35,375,000	12,624,000	40,766,000	30,128,000	5,229,000	17,571,000	39,496,000					21,000		291,000	7,395,000	1,011,000	12,557,000	291,000	278,000	442,000		291,000	278,000	463,000
Cash payments								(385,000)	(159,000)	(559,000)		(76,000)						(330,000)	(1,670,000)	(3,357,000)		(715,000)	(1,829,000)	(3,992,000)
Restructuring payable, ending balance								116,000	501,000	660,000	116,000							1,011,000	1,050,000	2,442,000	1,011,000	1,127,000	1,551,000	3,102,000	1,127,000
Total future estimated charges, at end of period