CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Millions, unless otherwise specified	Total	Common shares and paid-in surplus	Retained earnings	AOCI, after-tax	Parent [Member]	Total	Non-controlling Interests	Total Equity includes Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2011		$ 1,261.3	$ 2,789.7	$ 36.7		$ 4,087.7	$ 580.2	$ 4,667.9
Increase (Decrease) in Shareholders' Equity
Net income	193.4	0	207.4	0		207.4	(14.0)	193.4
Net change in unrealized gains (losses) on investments in unconsolidated affiliates, after tax	57.7	0	0	57.7		57.7	0	57.7
Change in foreign currency translation, net of tax	39.6	0	0	39.6		39.6	0	39.6
Net change in pension liability and other accumulated comprehensive items	(2.9)	0	0	(2.1)		(2.1)	(0.8)	(2.9)
Comprehensive income	301.8	0	207.4	95.2		302.6	(14.8)	287.8
Dividends declared on common shares		0	(6.6)	0		(6.6)	0	(6.6)
Dividends/distributions to non-controlling interests		0	0	0		0	(39.1)	(39.1)
Issuances of common shares		5.8	0	0		5.8	0	5.8
Repurchases and retirements of common shares	(669.1)	(221.3)	(447.8)	0		(669.1)	0	(669.1)
Contribution or Distribution to/ from Non-Controlling Interests		0	0	0		0	1.6	1.6
Amortization of restricted share and option awards		13.6	0	0		13.6	0.8	14.4
Allocation of fair value of net assets acquired to non-controlling interests		(2.2)	0	0		(2.2)		0
Deconsolidation of Hamer and Bri-Mar		0	0	0		0	(4.5)	(4.5)
Ending balance at Dec. 31, 2012		1,057.2	2,542.7	131.9		3,731.8	526.4	4,258.2
Increase (Decrease) in Shareholders' Equity
Net income	309.4	0	321.8	0	321.8		(12.4)	309.4
Net change in unrealized gains (losses) on investments in unconsolidated affiliates, after tax	(98.1)	0	0	(98.1)	(98.1)		0	(98.1)
Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation		0	0	2.7	2.7		0	2.7
Change in foreign currency translation, net of tax	2.7
Net change in pension liability and other accumulated comprehensive items	20.8	0	0	15.6	15.6		5.2	20.8
Comprehensive income	247.2	0	321.8	(79.8)		242.0	(7.2)	234.8
Dividends declared on common shares		0	(6.2)	0	(6.2)		0	(6.2)
Dividends/distributions to non-controlling interests		0	0	0	0		(39.7)	(39.7)
Issuances of common shares		1.0	0	0	1.0		0	1.0
Repurchases and retirements of common shares	(79.8)	(23.8)	(56.0)	0	(79.8)		0	(79.8)
Contribution or Distribution to/ from Non-Controlling Interests		0	0	0	0		11.5	11.5
Amortization of restricted share and option awards		16.7	0	0	16.7		0.9	17.6
Ending balance at Dec. 31, 2013	3,905.5	1,051.1	2,802.3	52.1		3,905.5	491.9	4,397.4
Increase (Decrease) in Shareholders' Equity
Net income	290.6	0	312.7	0	312.7		(22.1)	290.6
Net change in unrealized gains (losses) on investments in unconsolidated affiliates, after tax	75.3	0	0	75.3	75.3		0	75.3
Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation		0	0	(168.2)	(168.2)		(0.3)	(168.5)
Change in foreign currency translation, net of tax	(168.5)
Net change in pension liability and other accumulated comprehensive items	(11.7)	0	0	(8.7)	(8.7)		(3.0)	(11.7)
Comprehensive income	207.8	0	312.7	(101.6)		211.1	(25.4)	185.7
Dividends declared on common shares		0	(6.2)	0	(6.2)		0	(6.2)
Dividends/distributions to non-controlling interests		0	0	0	0		(40.7)	(40.7)
Issuances of common shares		4.8	0	0	4.8		0	4.8
Repurchases and retirements of common shares	(134.5)	(37.1)	(97.4)	0	(134.5)		0	(134.5)
Contribution or Distribution to/ from Non-Controlling Interests		0	0	0	0		8.3	8.3
Noncontrolling Interest, Increase from Business Combination		0	0	0	0		122.1	122.1
Partners' Capital Account, Redemptions		0	0	0	0		(14.0)	(14.0)
Amortization of restricted share and option awards		15.9	0	0	15.9		0.8	16.7
Ending balance at Dec. 31, 2014	$ 3,996.6	$ 1,034.7	$ 3,011.4	$ (49.5)		$ 3,996.6	$ 543.0	$ 4,539.6