Condensed Consolidating Financial Statements (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Consolidating Cash Flow Statement
Cash provided by operating activities	$ 356.0	$ 633.3	$ 601.9
Investing activities:
Purchases of property, plant and equipment	(190.4)	(168.0)	(214.0)
Acquisitions, net of cash acquired	(208.2)	(821.1)	(166.9)
Other investing activities, net	33.6	10.1	(0.8)
Net cash used in investing activities	(365.0)	(979.0)	(381.7)
Financing activities:
Net short-term debt (repayments) borrowings	1.7	(473.0)	(63.2)
Proceeds from long-term debt borrowings	719.0	2,297.9	641.0
Principal payments on long-term debt	(552.2)	(1,454.5)	(763.0)
Dividends paid	(108.7)	(96.9)	(60.2)
Other financing activities, net	(26.8)	58.6	37.8
Net cash provided by (used in) financing activities	33.0	332.1	(207.6)
Effect of exchange rate changes on cash and cash equivalents	(1.4)	(0.4)	0.4
Increase (decrease) in cash and cash equivalents	22.6	(14.0)	13.0
Cash and cash equivalents at beginning of year	83.6	97.6	84.6
Cash and cash equivalents at end of year	106.2	83.6	97.6
Reportable legal entities | Parent
Condensed Consolidating Cash Flow Statement
Cash provided by operating activities	118.4	102.8	23.3
Investing activities:
Purchases of property, plant and equipment	(18.2)	(14.0)	(16.0)
Acquisitions, net of cash acquired		(821.1)	(117.5)
Net advances to subsidiaries	(119.7)	(85.3)	260.2
Other investing activities, net	(0.8)	0.1	1.8
Net cash used in investing activities	(138.7)	(920.3)	128.5
Financing activities:
Proceeds from long-term debt borrowings	719.0	2,297.9	641.0
Principal payments on long-term debt	(549.3)	(1,452.8)	(761.3)
Dividends paid	(108.7)	(96.9)	(60.2)
Other financing activities, net	(18.5)	60.9	41.7
Net cash provided by (used in) financing activities	42.5	809.1	(138.8)
Increase (decrease) in cash and cash equivalents	22.2	(8.4)	13.0
Cash and cash equivalents at beginning of year	19.7	28.1	15.1
Cash and cash equivalents at end of year	41.9	19.7	28.1
Reportable legal entities | Guarantor Subsidiaries
Condensed Consolidating Cash Flow Statement
Cash provided by operating activities	193.2	458.5	512.9
Investing activities:
Purchases of property, plant and equipment	(159.2)	(139.9)	(171.1)
Acquisitions, net of cash acquired	(92.0)		(49.4)
Other investing activities, net	(3.6)	2.8	(2.7)
Net cash used in investing activities	(254.8)	(137.1)	(223.2)
Financing activities:
Net short-term debt (repayments) borrowings		(473.8)	(59.4)
Principal payments on long-term debt	(2.0)	(0.6)	(1.7)
Net intercompany borrowings	64.4	141.4	(223.2)
Other financing activities, net	(8.3)	(2.3)	(3.1)
Net cash provided by (used in) financing activities	54.1	(335.3)	(287.4)
Increase (decrease) in cash and cash equivalents	(7.5)	(13.9)	2.3
Cash and cash equivalents at beginning of year	(0.8)	13.1	10.8
Cash and cash equivalents at end of year	(8.3)	(0.8)	13.1
Reportable legal entities | Non-Guarantor Subsidiaries
Condensed Consolidating Cash Flow Statement
Cash provided by operating activities	44.4	72.0	65.7
Investing activities:
Purchases of property, plant and equipment	(13.0)	(14.1)	(26.9)
Acquisitions, net of cash acquired	(116.2)
Other investing activities, net	38.0	7.2	0.1
Net cash used in investing activities	(91.2)	(6.9)	(26.8)
Financing activities:
Net short-term debt (repayments) borrowings	1.7	0.8	(3.8)
Principal payments on long-term debt	(0.9)	(1.1)
Net intercompany borrowings	55.3	(56.1)	(37.0)
Other financing activities, net			(0.8)
Net cash provided by (used in) financing activities	56.1	(56.4)	(41.6)
Effect of exchange rate changes on cash and cash equivalents	(1.4)	(0.4)	0.4
Increase (decrease) in cash and cash equivalents	7.9	8.3	(2.3)
Cash and cash equivalents at beginning of year	64.7	56.4	58.7
Cash and cash equivalents at end of year	72.6	64.7	56.4
Consolidating Adjustments
Investing activities:
Net advances to subsidiaries	119.7	85.3	(260.2)
Net cash used in investing activities	119.7	85.3	(260.2)
Financing activities:
Net intercompany borrowings	(119.7)	(85.3)	260.2
Net cash provided by (used in) financing activities	$ (119.7)	$ (85.3)	$ 260.2