Short-Term Borrowings and Long-Term Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended								12 Months Ended		3 Months Ended						12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Federal Funds Rate	Dec. 31, 2012 LIBOR-Based Rate	Dec. 31, 2012 Minimum	Dec. 31, 2012 Minimum Eurocurrency Rate	Dec. 31, 2012 Maximum	Dec. 31, 2012 Maximum Eurocurrency Rate	Dec. 31, 2012 Avid Health, Inc Minimum	Dec. 31, 2012 Avid Health, Inc Maximum	Sep. 30, 2011 Commercial Paper D	Dec. 31, 2012 Commercial Paper	Dec. 31, 2012 Commercial Paper Avid Health, Inc	Dec. 31, 2012 Other Debt	Dec. 31, 2012 Senior Credit Facility	Nov. 18, 2010 Unsecured Revolving Credit Facility	Dec. 31, 2010 Term Loan	Sep. 26, 2012 2.875% Senior notes due October 1, 2022	Dec. 31, 2012 2.875% Senior notes due October 1, 2022	Sep. 26, 2012 2.875% Senior notes due October 1, 2022 Repayment Terms	Sep. 26, 2012 2.875% Senior notes due October 1, 2022 Repayment Terms Treasury Rate	Dec. 31, 2012 3.35% Senior Notes Due December 15, 2015	Dec. 15, 2010 3.35% Senior Notes Due December 15, 2015	Dec. 31, 2012 3.35% Senior Notes Due December 15, 2015 Treasury Rate	Dec. 31, 2012 6% Senior Subordinated Notes Due 2012	Dec. 30, 2010 6% Senior Subordinated Notes Due 2012
Debt Instrument [Line Items]
Aggregate principal amount																		$ 400					$ 250			$ 250
Interest rate of debt																		2.875%	2.875%			3.35%			6.00%
Interest payment frequency																		Semi-annually
Maturity date of debt																		Oct. 01, 2022	Oct. 01, 2022			Dec. 15, 2015
Interest payment, beginning date																		Apr. 01, 2013
Debt repayment terms																		The Company may redeem the 2022 Notes, at any time in whole or from time to time in part, prior to their maturity date at a redemption price equal to the greater of: (i) 100% of the principal amount of the 2022 Notes being redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon (not including any portion of such payments of interest accrued as of the date of redemption), discounted to the date of redemption on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined in the Second Supplemental Indenture), plus 20 basis points. In addition, if the Company undergoes a “change of control” (as defined in the Second Supplemental Indenture), and if, generally within 60 days thereafter, the 2022 Notes are rated below investment grade by each of the rating agencies designated in the Second Supplemental Indenture, the Company will be required to offer to repurchase the 2022 Notes at 101% of par plus accrued and unpaid interest to the date of repurchase.
Percentage of principal amount of notes being redeemed																				100.00%		100.00%
Debt instrument, variable interest rate			0.50%	1.00%	0.25%	1.25%	1.25%	2.25%													0.20%			0.25%
Percentage of principal amount of notes required if rated below investment grade																				101.00%		101.00%
Maximum borrowing capacity											500	500			500
Notes maximum maturity days											397
Short term borrowing	253.8	2.6											250.0
Line of credit facility, current borrowing capacity																500
Additional borrowing capacity															500
Adjusted EBITDA to interest ratio	3.00
Consolidated funded indebtedness to EBITDA ratio	3.25
Maximum leverage ratio related to material acquisition	3.50								1.00	3.50
Interest expense																	4.6
Deferred financing costs written off																	3.2
Securitization of accounts receivable		90.0
Remaining borrowing capacity														5.9
Various debt due to international banks	$ 3.8	$ 2.6												$ 3.8