Supplemental Guarantor Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net cash provided by operating activities	$ 28.4	$ 36.7	$ 186.9
Payments for acquisitions, net of cash acquired	(884.6)	(59.4)	(11.7)
Proceeds from maturities of investments	225.0	176.1	477.4
Proceeds from sale of investments	0.0	0.0	39.6
Proceeds from sale of foreign currency option and forward contracts, net	16.2	0.0	0.0
Payments for purchases of investments	(243.5)	(125.5)	(428.7)
Proceeds from divestitures and the sale of assets	31.3	5.0	18.4
Capital expenditures	(39.5)	(52.3)	(60.1)
Increase in certain other assets	(28.2)	(6.3)	(19.8)
Capital contributions and loans paid	0.0	0.0	0.0
Proceeds from intercompany loans	0.0	0.0	0.0
Net cash provided (used) by investing activities - continuing operations	(923.3)	(62.4)	15.1
Net cash provided (used) by investing activities - discontinued operations	361.9	(2.5)	(1.3)
Net cash provided (used) by investing activities	(561.4)	(64.9)	13.8
Dividends paid	(64.6)	(75.6)	(74.9)
Debt issuance costs	(39.2)	(6.0)	(1.4)
Revolving debt borrowings (repayments), net	(178.0)	155.8	2.0
Other debt borrowings	1,837.7	135.8	157.6
Other debt repayments	(662.5)	(168.7)	(175.5)
Distributions to noncontrolling interest holders	(10.2)	(0.1)	(2.2)
Excess tax benefits from share-based compensation	0.3	0.5	0.5
Issuance of common shares	0.3	3.5	14.6
Repurchase of common shares	(2.2)	(3.0)	(1.9)
Capital contributions received and loans incurred	0.0	0.0	0.0
Payments on intercompany loans	0.0	0.0	0.0
Net cash provided (used) by financing activities	881.6	42.2	(81.2)
Effect of exchange rate changes on cash	(8.0)	(23.9)	(28.2)
Increase (decrease) in cash and cash equivalents	340.6	(9.9)	91.3
Add: Cash overdraft included in assets held for sale at beginning of year	(1.5)	(4.1)	(0.6)
Less: Cash overdraft included in assets held for sale at end of year	0.0	(1.5)	(4.1)
Cash and cash equivalents at the beginning of the year	313.6	326.1	231.3
Cash and cash equivalents at the end of the year	652.7	313.6	326.1
Parent Company [Member]
Net cash provided by operating activities	(147.2)	1.1	154.6
Payments for acquisitions, net of cash acquired	(995.2)	0.0	0.0
Proceeds from maturities of investments	(1.9)	(2.1)	2.3
Proceeds from sale of investments			0.0
Proceeds from sale of foreign currency option and forward contracts, net	16.2
Payments for purchases of investments	0.0	0.0	4.0
Proceeds from divestitures and the sale of assets	0.0	0.0	0.0
Capital expenditures	(9.2)	(34.9)	(44.1)
Increase in certain other assets	0.5	(6.5)	(14.4)
Capital contributions and loans paid	(270.2)	(205.4)	(233.7)
Proceeds from intercompany loans	106.4	173.0	184.8
Net cash provided (used) by investing activities - continuing operations	(1,153.4)	(75.9)	(109.1)
Net cash provided (used) by investing activities - discontinued operations	361.9	(2.5)	(1.3)
Net cash provided (used) by investing activities	(791.5)	(78.4)	(110.4)
Dividends paid	(64.6)	(75.6)	(74.9)
Debt issuance costs	(39.2)	(6.0)	(1.4)
Revolving debt borrowings (repayments), net	(178.0)	180.8	26.0
Other debt borrowings	1,781.3	0.0	0.0
Other debt repayments	(439.6)	(14.8)	0.0
Distributions to noncontrolling interest holders	0.0	0.1	0.0
Excess tax benefits from share-based compensation	0.3	0.5	0.5
Issuance of common shares	0.3	3.5	14.6
Repurchase of common shares	(2.2)	(3.0)	(1.9)
Capital contributions received and loans incurred	0.0	0.0	0.0
Payments on intercompany loans	0.0	0.0	0.0
Net cash provided (used) by financing activities	1,058.3	85.5	(37.1)
Effect of exchange rate changes on cash	0.0	0.0	0.0
Increase (decrease) in cash and cash equivalents	119.6	8.2	7.1
Add: Cash overdraft included in assets held for sale at beginning of year	(1.5)	(4.1)	(0.6)
Less: Cash overdraft included in assets held for sale at end of year	0.0	(1.5)	(4.1)
Cash and cash equivalents at the beginning of the year	20.3	14.7	4.1
Cash and cash equivalents at the end of the year	138.4	20.3	14.7
Guarantor Subsidiaries [Member]
Net cash provided by operating activities	(43.2)	(26.2)	(3.5)
Payments for acquisitions, net of cash acquired	0.0	0.0	0.0
Proceeds from maturities of investments	0.0	0.0	0.0
Proceeds from sale of investments			0.0
Proceeds from sale of foreign currency option and forward contracts, net	0.0
Payments for purchases of investments	0.0	0.0	0.0
Proceeds from divestitures and the sale of assets	0.0	3.5	0.0
Capital expenditures	(1.0)	(5.9)	(1.4)
Increase in certain other assets	(6.8)	(6.6)	(15.6)
Capital contributions and loans paid	0.0	0.0	0.0
Proceeds from intercompany loans	0.0	0.0	0.0
Net cash provided (used) by investing activities - continuing operations	(7.8)	(9.0)	(17.0)
Net cash provided (used) by investing activities - discontinued operations	0.0	0.0	0.0
Net cash provided (used) by investing activities	(7.8)	(9.0)	(17.0)
Dividends paid	0.0	0.0	0.0
Debt issuance costs	0.0	0.0	0.0
Revolving debt borrowings (repayments), net	0.0	0.0	0.0
Other debt borrowings	0.0	0.0	(0.3)
Other debt repayments	(1.2)	(0.8)	0.2
Distributions to noncontrolling interest holders	0.0	0.0	0.0
Excess tax benefits from share-based compensation	0.0	0.0	0.0
Issuance of common shares	0.0	0.0	0.0
Repurchase of common shares	0.0	0.0	0.0
Capital contributions received and loans incurred	133.3	179.3	177.7
Payments on intercompany loans	(86.7)	(137.9)	(156.6)
Net cash provided (used) by financing activities	45.4	40.6	21.0
Effect of exchange rate changes on cash	0.0	0.0	0.0
Increase (decrease) in cash and cash equivalents	(5.6)	5.4	0.5
Add: Cash overdraft included in assets held for sale at beginning of year	0.0	0.0	0.0
Less: Cash overdraft included in assets held for sale at end of year	0.0	0.0	0.0
Cash and cash equivalents at the beginning of the year	7.9	2.5	2.0
Cash and cash equivalents at the end of the year	2.3	7.9	2.5
Non-Guarantor Subsidiaries [Member]
Net cash provided by operating activities	232.6	97.5	132.6
Payments for acquisitions, net of cash acquired	110.6	(59.4)	(11.7)
Proceeds from maturities of investments	226.9	178.2	475.1
Proceeds from sale of investments			39.6
Proceeds from sale of foreign currency option and forward contracts, net	0.0
Payments for purchases of investments	(243.5)	(125.5)	(424.7)
Proceeds from divestitures and the sale of assets	31.3	1.5	18.4
Capital expenditures	(29.3)	(11.5)	(14.6)
Increase in certain other assets	(21.9)	6.8	10.2
Capital contributions and loans paid	(1,119.3)	(3.8)	(10.1)
Proceeds from intercompany loans	0.0	0.0	0.0
Net cash provided (used) by investing activities - continuing operations	(1,045.2)	(13.7)	82.2
Net cash provided (used) by investing activities - discontinued operations	0.0	0.0	0.0
Net cash provided (used) by investing activities	(1,045.2)	(13.7)	82.2
Dividends paid	(13.8)	(35.7)	(96.8)
Debt issuance costs	0.0	0.0	0.0
Revolving debt borrowings (repayments), net	0.0	(25.0)	(24.0)
Other debt borrowings	56.4	135.8	157.9
Other debt repayments	(221.7)	(153.1)	(175.7)
Distributions to noncontrolling interest holders	(10.2)	(0.2)	(2.2)
Excess tax benefits from share-based compensation	0.0	0.0	0.0
Issuance of common shares	0.0	0.0	0.0
Repurchase of common shares	0.0	0.0	0.0
Capital contributions received and loans incurred	1,256.2	29.9	66.1
Payments on intercompany loans	(19.7)	(35.1)	(28.2)
Net cash provided (used) by financing activities	1,047.2	(83.4)	(102.9)
Effect of exchange rate changes on cash	(8.0)	(23.9)	(28.2)
Increase (decrease) in cash and cash equivalents	226.6	(23.5)	83.7
Add: Cash overdraft included in assets held for sale at beginning of year	0.0	0.0	0.0
Less: Cash overdraft included in assets held for sale at end of year	0.0	0.0	0.0
Cash and cash equivalents at the beginning of the year	285.4	308.9	225.2
Cash and cash equivalents at the end of the year	512.0	285.4	308.9
Reclassifications And Eliminations [Member]
Net cash provided by operating activities	(13.8)	(35.7)	(96.8)
Payments for acquisitions, net of cash acquired	0.0	0.0	0.0
Proceeds from maturities of investments	0.0	0.0	0.0
Proceeds from sale of investments			0.0
Proceeds from sale of foreign currency option and forward contracts, net	0.0
Payments for purchases of investments	0.0	0.0	0.0
Proceeds from divestitures and the sale of assets	0.0	0.0	0.0
Capital expenditures	0.0	0.0	0.0
Increase in certain other assets	0.0	0.0	0.0
Capital contributions and loans paid	1,389.5	209.2	243.8
Proceeds from intercompany loans	(106.4)	(173.0)	(184.8)
Net cash provided (used) by investing activities - continuing operations	1,283.1	36.2	59.0
Net cash provided (used) by investing activities - discontinued operations	0.0	0.0	0.0
Net cash provided (used) by investing activities	1,283.1	36.2	59.0
Dividends paid	13.8	35.7	96.8
Debt issuance costs	0.0	0.0	0.0
Revolving debt borrowings (repayments), net	0.0	0.0	0.0
Other debt borrowings	0.0	0.0	0.0
Other debt repayments	0.0	0.0	0.0
Distributions to noncontrolling interest holders	0.0	0.0	0.0
Excess tax benefits from share-based compensation	0.0	0.0	0.0
Issuance of common shares	0.0	0.0	0.0
Repurchase of common shares	0.0	0.0	0.0
Capital contributions received and loans incurred	(1,389.5)	(209.2)	(243.8)
Payments on intercompany loans	106.4	173.0	184.8
Net cash provided (used) by financing activities	(1,269.3)	(0.5)	37.8
Effect of exchange rate changes on cash	0.0	0.0	0.0
Increase (decrease) in cash and cash equivalents	0.0	0.0	0.0
Add: Cash overdraft included in assets held for sale at beginning of year	0.0	0.0	0.0
Less: Cash overdraft included in assets held for sale at end of year	0.0	0.0	0.0
Cash and cash equivalents at the beginning of the year	0.0	0.0	0.0
Cash and cash equivalents at the end of the year	$ 0.0	$ 0.0	$ 0.0