Noncontrolling interests (Tables)

3 Months Ended

Mar. 31, 2013

Noncontrolling interests [Abstract]

Total equity, equity attributable To MTI, and equity attributable to noncontrolling interests

     The following is a reconciliation of beginning and ending total equity, equity attributable to MTI, and equity attributable to non-controlling interests:

		Equity Attributable to MTI
(millions of dollars)		Common Stock		Additional Paid-in Capital		RetainedEarnings			AccumulatedOtherComprehensiveIncome (Loss)			Treasury Stock			Non-controlling Interests			Total
Balance as of December 31, 2012		$	4.7	$	345.9	$	1,032.9		$	(51.2	)	$	(541.9	)	$	23.3		$	813.7
Net income			--		--		18.8			--			--			0.9			19.7
Other comprehensive income			--		--		--			(12.0	)		--			(0.5	)		(12.5	)
Dividends declared			--		--		(1.8	)		--			--			--			(1.8	)
Dividends to non-controlling interest			--		--		--			--			--			(0.5	)		(0.5	)
Employee benefit transactions			--		2.7		--			--			--			--			2.7
Income tax benefit arising from employee
	stock option plans		--		0.7		--			--			--			--			0.7
Purchase of common stock for treasury			--		--		--			--			(9.4	)		--			(9.4	)
Stock based compensation			--		0.2		--			--			--			--			0.2
Balance as of March 31, 2013		$	4.7	$	349.5	$	1,049.9		$	(63.2	)	$	(551.3	)	$	23.2		$	812.8