Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statement Of Cash Flows [Abstract]
Net income	$ 199.7	$ 168.6
Adjustments to reconcile net income to net cash provided by operating activities:[Abstract]
Depreciation and amortization	51.7	54.8
Deferred income taxes	14.5	4.7
Stock-based compensation	7.7	6.9
Tax benefit on stock-based awards	(4.0)	(2.4)
Changes in assets and liabilities:[Abstract]
Increase in accounts receivable, net	(116.3)	(97.4)
Increase in inventories, net	(33.5)	(29.3)
Increase in current liabilities	89.6	59.4
Changes in other assets and liabilities, net	13.1	13.8
Contribution to defined benefit pension plans	(2.1)	(2.6)
Other, net	(3.2)	(0.5)
Net cash provided by operating activities	217.2	176.0
Cash Flows from Investing Activities [Abstract]
Capital expenditures	(41.3)	(33.8)
Purchases of available-for-sale investments	(14.0)	(22.1)
Proceeds from available-for-sale investments	8.2	10.1
Other, net	5.5	2.3
Net cash used in investing activities	(41.6)	(43.5)
Cash Flows from Financing Activities [Abstract]
Short-term debt borrowings	0.6	2.2
Payment of dividends	(67.7)	(64.0)
Payment of dividends to noncontrolling interest	(0.7)	(0.9)
Acquisition of common shares	(137.7)	(2.9)
Proceeds from exercise of stock options	17.2	11.1
Tax benefit on stock-based awards	4.0	2.4
Other, net	0.1	0
Net cash used in financing activities	(184.2)	(52.1)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(0.3)	3.9
(Decrease) increase in cash and cash equivalents	(8.9)	84.3
Cash and cash equivalents [Abstract]
Beginning of period	520.7	258.5
End of period	$ 511.8	$ 342.8

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).