Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash provided (required) by operating activities:
Net income	$ 327.5	$ 313.4
Adjustments to reconcile net income to cash provided (required) by operating activities:
Depreciation	117.4	76.6
Amortization	35.6	22.7
Employee benefit plan and stock-based compensation costs	71.9	76.6
Deferred income tax provision	69.2	30.4
Unrealized loss on derivative instruments	3.7	13.3
Other	24.3	16.6
Changes in operating assets and liabilities, net of effects of acquisitions:
Trade receivables, net	(218.3)	(191.6)
Inventories, net	(104.1)	(210.7)
Accounts payable, trade	4.0	(35.5)
Advance payments and progress billings	311.0	40.7
Income taxes	(58.0)	(36.6)
Payment of Multi Phase Meters earn-out consideration	(32.2)
Accrued pension and other post-retirement benefits, net	(53.2)	(47.9)
Other assets and liabilities, net	(73.6)	(73.2)
Cash provided (required) by operating activities	425.2	(5.2)
Cash provided (required) by investing activities:
Capital expenditures	(237.5)	(282.7)
Acquisitions, net of cash and cash equivalents acquired		(328.6)
Other	2.3	(0.1)
Cash required by investing activities	(235.2)	(611.4)
Cash provided (required) by financing activities:
Net increase in short-term debt	2.2	1.6
Net increase in commercial paper	41.0	105.7
Proceeds from issuance of long-term debt	28.8	1,068.8
Repayments of long-term debt	(136.0)	(275.0)
Purchase of treasury stock	(70.8)	(52.4)
Payment of Multi Phase Meters earn-out consideration	(25.1)
Payments related to taxes withheld on stock-based compensation	(17.2)	(34.9)
Excess tax benefits	7.7	26.1
Other	(0.9)	(2.7)
Cash provided (required) by financing activities	(170.3)	837.2
Effect of exchange rate changes on cash and cash equivalents	(1.6)	1.6
Increase in cash and cash equivalents	18.1	222.2
Cash and cash equivalents, beginning of period	342.1	344.0
Cash and cash equivalents, end of period	$ 360.2	$ 566.2