CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 56.7	$ 59.3
Depreciation	53.9	50.4
Amortization	3.4	3.3
Other non-cash items, net	2.2	1.4
Changes in assets and liabilities	(27.3)	(23.3)
Net cash provided by operating activities	88.9	91.1
Cash flows from investing activities:
Capital expenditures	(62.0)	(49.8)
Acquisition of business, net of cash acquired	0	(3.7)
Purchases of short-term investments, net	(22.8)	(2.8)
Other, net	0.6	0.9
Net cash used in investing activities	(84.2)	(55.4)
Cash flows from financing activities:
Borrowings under revolving credit agreements, net	16.5	21.9
Repayment of former credit facility	0	(26.6)
Debt issuance costs	(0.3)	(1.7)
Changes in other debt	(0.6)	0.1
Dividend payments	(17.1)	(16.0)
Excess tax benefit from employee stock plans	3.2	2.0
Shares repurchased for employee tax withholdings	(3.5)	(2.0)
Issuance of common stock from treasury	5.2	2.9
Net cash provided by (used in) financing activities	3.4	(19.4)
Effect of exchange rates on cash	0.9	(2.3)
Net increase in cash and cash equivalents	9.0	14.0
Cash, including cash equivalents at beginning of period	110.2	83.1
Cash, including cash equivalents at end of period	$ 119.2	$ 97.1