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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Operating activities    
Net income $ 50.3 $ 36.6
Adjustments to Reconcile Net Income to Cash Provided by (Used in) Operating Activities    
Depreciation and amortization 36.7 33.9
Deferred income taxes (0.5) (0.3)
Stock-based compensation 0.4 2.1
Pensions and other postretirement benefits, net of contributions (16.7) 5.2
Loss (gain) on disposal of property, plant and equipment, net 0.6 (0.7)
Changes in Operating Assets and Liabilities    
Accounts receivable (166.3) (62.4)
Inventories (24.7) (2.8)
Accounts payable and accrued expenses 73.0 12.8
Deferred revenue (13.3) (19.3)
Other assets and liabilities (11.0) (4.1)
Net cash provided by (used in) operating activities (71.5) 1.0
Investing activities    
Purchases of property, plant and equipment (44.5) (31.5)
Proceeds from sale of property, plant and equipment 0.9 1.5
Net cash used in investing activities (43.6) (30.0)
Financing Activities    
Net short-term borrowings under credit facilities 59.1 0
Payments of other long-term debt and capital lease obligations (2.4) (5.1)
Proceeds from issuance of long-term debt 10.1 1.8
Purchase of treasury stock (5.9) (0.1)
Employee stock option exercises 0.1 4.6
Purchase of noncontrolling interest (4.0) 0
Net cash provided by financing activities 57.0 1.2
Effect of exchange rate changes on cash 1.7 0.6
Net increase (decrease) in cash and cash equivalents (56.4) (27.2)
Cash and cash equivalents at beginning of period 169.2 244.6
Cash and cash equivalents at end of period 112.8 217.4
Supplemental Cash Flow Information    
Interest paid 35.3 37.6
Income taxes paid, net of refunds $ 5.2 $ 2.5