Supplemental Guarantor Information Supplemental Guarantor Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Net cash used by operating activities	$ (66.4)	$ (115.2)
Cash flow from investing activities:
Proceeds from maturities of investments	84.9	35.1
Payments for purchases of investments	(95.1)	(39.5)
Proceeds from sale of assets	2.0	0.2
Capital expenditures	(12.1)	(4.7)
Increase in certain other assets	(8.7)	(4.9)
Capital contributions and loans paid	0.0	0.0
Proceeds from intercompany loans	0.0	0.0
Net cash used by investing activities - continuing operations	(29.0)	(13.8)
Net cash provided by investing activities - discontinued operations	0.0	365.1
Net cash used by investing activities	(29.0)	351.3
Cash flow from financing activities:
Dividends paid	(7.6)	(18.8)
Debt issuance costs	0.0	(0.8)
Restricted cash, net	0.0	(116.1)
Revolving credit facility borrowings (repayments), net	20.0	73.1
Other debt borrowings	19.1	17.3
Other debt repayments	(84.0)	(198.0)
Distributions and payments to noncontrolling interest holders	(15.7)	(2.0)
Excess tax benefits from share-based compensation	0.1	0.0
Issuance of common shares	0.3	0.0
Repurchase of common shares	(4.6)	(1.7)
Capital contributions received and loans incurred	0.0	0.0
Payments on intercompany loans	0.0	0.0
Net cash provided by financing activities	(72.4)	(247.0)
Effect of exchange rate changes on cash and cash equivalents	5.2	3.4
Increase (decrease) in cash and cash equivalents	(162.6)	(7.5)
Add: Cash overdraft included in assets held for sale at beginning of period	0.0	(1.5)	$ (1.5)
Less: Cash overdraft included in assets held for sale at end of period			0.0
Cash and cash equivalents at the beginning of the period	652.7	313.6	313.6
Cash and cash equivalents at the end of the period	490.1	304.6	652.7
Parent Company [Member]
Net cash used by operating activities	(111.5)	(113.2)
Cash flow from investing activities:
Proceeds from maturities of investments	0.8	1.0
Payments for purchases of investments	0.0	0.0
Proceeds from sale of assets	0.0	0.0
Capital expenditures	(1.8)	(1.4)
Increase in certain other assets	(4.9)	(12.2)
Capital contributions and loans paid	(164.7)	(53.0)
Proceeds from intercompany loans	162.3	47.1
Net cash used by investing activities - continuing operations	(8.3)	(18.5)
Net cash provided by investing activities - discontinued operations	0.0	365.1
Net cash used by investing activities	(8.3)	346.6
Cash flow from financing activities:
Dividends paid	(7.6)	(18.8)
Debt issuance costs	0.0	(0.8)
Restricted cash, net		(116.1)
Revolving credit facility borrowings (repayments), net	20.0	73.1
Other debt borrowings	0.0	0.0
Other debt repayments	(7.8)	(177.7)
Distributions and payments to noncontrolling interest holders	0.0	0.0
Excess tax benefits from share-based compensation	0.1
Issuance of common shares	0.3
Repurchase of common shares	(4.6)	(1.7)
Capital contributions received and loans incurred	0.0	0.0
Payments on intercompany loans	0.0	0.0
Net cash provided by financing activities	0.4	(242.0)
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0
Increase (decrease) in cash and cash equivalents	(119.4)	(8.6)
Add: Cash overdraft included in assets held for sale at beginning of period		(1.5)	(1.5)
Cash and cash equivalents at the beginning of the period	138.4	20.3	20.3
Cash and cash equivalents at the end of the period	19.0	10.2	138.4
Guarantor Subsidiaries [Member]
Net cash used by operating activities	(2.2)	(23.4)
Cash flow from investing activities:
Proceeds from maturities of investments	0.0	0.0
Payments for purchases of investments	0.0	0.0
Proceeds from sale of assets	0.0	0.0
Capital expenditures	0.0	(0.4)
Increase in certain other assets	4.2	(1.5)
Capital contributions and loans paid	0.0	0.0
Proceeds from intercompany loans	0.0	0.0
Net cash used by investing activities - continuing operations	4.2	(1.9)
Net cash provided by investing activities - discontinued operations	0.0	0.0
Net cash used by investing activities	4.2	(1.9)
Cash flow from financing activities:
Dividends paid	0.0	0.0
Debt issuance costs	0.0	0.0
Restricted cash, net		0.0
Revolving credit facility borrowings (repayments), net	0.0	0.0
Other debt borrowings	0.0	0.0
Other debt repayments	(0.3)	(0.2)
Distributions and payments to noncontrolling interest holders	0.0	0.0
Excess tax benefits from share-based compensation	0.0
Issuance of common shares	0.0
Repurchase of common shares	0.0	0.0
Capital contributions received and loans incurred	17.8	49.9
Payments on intercompany loans	(19.6)	(29.5)
Net cash provided by financing activities	(2.1)	20.2
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0
Increase (decrease) in cash and cash equivalents	(0.1)	(5.1)
Add: Cash overdraft included in assets held for sale at beginning of period		0.0	0.0
Cash and cash equivalents at the beginning of the period	2.3	7.9	7.9
Cash and cash equivalents at the end of the period	2.2	2.8	2.3
Non-Guarantor Subsidiaries [Member]
Net cash used by operating activities	4.2	21.4
Cash flow from investing activities:
Proceeds from maturities of investments	84.1	34.1
Payments for purchases of investments	(95.1)	(39.5)
Proceeds from sale of assets	2.0	0.2
Capital expenditures	(10.3)	(2.9)
Increase in certain other assets	(8.0)	8.8
Capital contributions and loans paid	0.0	0.0
Proceeds from intercompany loans	0.0	0.0
Net cash used by investing activities - continuing operations	(27.3)	0.7
Net cash provided by investing activities - discontinued operations	0.0	0.0
Net cash used by investing activities	(27.3)	0.7
Cash flow from financing activities:
Dividends paid	0.0	0.0
Debt issuance costs	0.0	0.0
Restricted cash, net		0.0
Revolving credit facility borrowings (repayments), net	0.0	0.0
Other debt borrowings	62.2	17.3
Other debt repayments	(75.9)	(20.1)
Distributions and payments to noncontrolling interest holders	(15.7)	(2.0)
Excess tax benefits from share-based compensation	0.0
Issuance of common shares	0.0
Repurchase of common shares	0.0	0.0
Capital contributions received and loans incurred	146.9	3.1
Payments on intercompany loans	(142.7)	(17.6)
Net cash provided by financing activities	(25.2)	(19.3)
Effect of exchange rate changes on cash and cash equivalents	5.2	3.4
Increase (decrease) in cash and cash equivalents	(43.1)	6.2
Add: Cash overdraft included in assets held for sale at beginning of period		0.0	0.0
Cash and cash equivalents at the beginning of the period	512.0	285.4	285.4
Cash and cash equivalents at the end of the period	468.9	291.6	512.0
Reclassifications And Eliminations [Member]
Net cash used by operating activities	43.1	0.0
Cash flow from investing activities:
Proceeds from maturities of investments	0.0	0.0
Payments for purchases of investments	0.0	0.0
Proceeds from sale of assets	0.0	0.0
Capital expenditures	0.0	0.0
Increase in certain other assets	0.0	0.0
Capital contributions and loans paid	164.7	53.0
Proceeds from intercompany loans	(162.3)	(47.1)
Net cash used by investing activities - continuing operations	2.4	5.9
Net cash provided by investing activities - discontinued operations	0.0	0.0
Net cash used by investing activities	2.4	5.9
Cash flow from financing activities:
Dividends paid	0.0	0.0
Debt issuance costs	0.0	0.0
Restricted cash, net		0.0
Revolving credit facility borrowings (repayments), net	0.0	0.0
Other debt borrowings	(43.1)	0.0
Other debt repayments	0.0	0.0
Distributions and payments to noncontrolling interest holders	0.0	0.0
Excess tax benefits from share-based compensation	0.0
Issuance of common shares	0.0
Repurchase of common shares	0.0	0.0
Capital contributions received and loans incurred	(164.7)	(53.0)
Payments on intercompany loans	162.3	47.1
Net cash provided by financing activities	(45.5)	(5.9)
Effect of exchange rate changes on cash and cash equivalents	0.0	0.0
Increase (decrease) in cash and cash equivalents	0.0	0.0
Add: Cash overdraft included in assets held for sale at beginning of period		0.0	0.0
Cash and cash equivalents at the beginning of the period	0.0	0.0	0.0
Cash and cash equivalents at the end of the period	$ 0.0	$ 0.0	$ 0.0