Condensed Consolidating Financial Statements (Statements of Cash Flows) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Cash Flow Statements, Captions [Line Items]
Cash flows from operating activities:	$ 354.5	$ 331.2	$ 184.8
Cash flows from investing activities:
Proceeds from the disposal of property, plant and equipment	0.2	0.1	1.1
Purchases of property, plant and equipment	(84.3)	(69.9)	(88.4)
Net cash used in investing activities	(84.1)	(69.8)	(87.3)
Cash flows from financing activities:
Short-term borrowings, net	(2.4)	(1.7)	1.5
Proceeds from Other Debt	145.0	40.0	100.0
Asset securitization payments	(295.0)	(60.0)	(40.0)
Long-term debt borrowings	350.0	0.0	300.0
Borrowings from credit facility	2,336.5	1,671.0	2,073.5
Repayments of Long-term Debt	(58.8)	(24.0)	(2.3)
Repayments of Long-term Lines of Credit	2,346.0	1,807.5	1,908.5
Payments of deferred financing costs	(4.2)	0.0	(2.2)
Proceeds from Stock Options Exercised	2.6	2.4	2.0
Payments Related to Tax Withholding for Share-based Compensation	33.3	32.0	22.4
Repurchases of common stock	(300.0)	0.0	(550.3)
Excess Tax Benefit from Share-based Compensation, Financing Activities	19.4	22.4	11.8
Proceeds from (Repayments of) Related Party Debt	0.0	0.0	0.0
Increase (Decrease) in Accounts Payable, Related Parties	0.0	0.0	0.0
Payments of Ordinary Dividends, Common Stock	69.0	59.3	52.6
Net Cash Provided by (Used in) Financing Activities	(255.2)	(248.7)	(89.5)
Increase (decrease) in cash and cash equivalents	15.2	12.7	8.0
Effect of exchange rates on cash and cash equivalents	3.9	11.3	8.5
Cash and cash equivalents, beginning of year	38.9	37.5	38.0
Cash and cash equivalents, end of year	50.2	38.9	37.5
Parent [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash flows from operating activities:	(1.6)	226.9	328.8
Cash flows from investing activities:
Proceeds from the disposal of property, plant and equipment	0.0	0.0	0.0
Purchases of property, plant and equipment	0.0	0.0	0.0
Net cash used in investing activities	0.0	0.0	0.0
Cash flows from financing activities:
Short-term borrowings, net	0.0	0.0	0.0
Proceeds from Other Debt	0.0	0.0	0.0
Asset securitization payments	0.0	0.0	0.0
Long-term debt borrowings	350.0	0.0	300.0
Borrowings from credit facility	2,336.5	1,671.0	2,073.5
Repayments of Long-term Debt	(57.5)	(22.5)	0.0
Repayments of Long-term Lines of Credit	2,346.0	1,807.5	1,908.5
Payments of deferred financing costs	(4.2)	0.0	(2.2)
Proceeds from Stock Options Exercised	2.6	2.4	2.0
Payments Related to Tax Withholding for Share-based Compensation	33.3	32.0	22.4
Repurchases of common stock	(300.0)	0.0	(550.3)
Excess Tax Benefit from Share-based Compensation, Financing Activities	19.4	22.4	11.8
Proceeds from (Repayments of) Related Party Debt	30.0	(9.4)	(0.1)
Increase (Decrease) in Accounts Payable, Related Parties	73.8	7.5	(180.1)
Payments of Ordinary Dividends, Common Stock	69.0	59.3	52.6
Net Cash Provided by (Used in) Financing Activities	2.3	(227.4)	(328.9)
Increase (decrease) in cash and cash equivalents	0.7	(0.5)	(0.1)
Effect of exchange rates on cash and cash equivalents	0.0	0.0	0.0
Cash and cash equivalents, beginning of year	0.5	1.0	1.1
Cash and cash equivalents, end of year	1.2	0.5	1.0
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash flows from operating activities:	218.5	49.3	(97.2)
Cash flows from investing activities:
Proceeds from the disposal of property, plant and equipment	0.0	0.1	1.0
Purchases of property, plant and equipment	(71.5)	(60.2)	(70.5)
Net cash used in investing activities	(71.5)	(60.1)	(69.5)
Cash flows from financing activities:
Short-term borrowings, net	0.0	0.0	0.0
Proceeds from Other Debt	0.0	0.0	0.0
Asset securitization payments	0.0	0.0	0.0
Long-term debt borrowings	0.0	0.0
Borrowings from credit facility	0.0	0.0	0.0
Repayments of Long-term Debt	(0.9)	(1.2)	(1.9)
Repayments of Long-term Lines of Credit	0.0	0.0	0.0
Payments of deferred financing costs	0.0	0.0	0.0
Proceeds from Stock Options Exercised	0.0	0.0	0.0
Payments Related to Tax Withholding for Share-based Compensation	0.0	0.0	0.0
Repurchases of common stock	0.0	0.0	0.0
Excess Tax Benefit from Share-based Compensation, Financing Activities	0.0	0.0	0.0
Proceeds from (Repayments of) Related Party Debt	(65.8)	7.1	4.7
Increase (Decrease) in Accounts Payable, Related Parties	(71.0)	1.2	164.9
Payments of Ordinary Dividends, Common Stock	0.0	0.0	0.0
Net Cash Provided by (Used in) Financing Activities	(137.7)	7.1	167.7
Increase (decrease) in cash and cash equivalents	9.3	(3.7)	1.0
Effect of exchange rates on cash and cash equivalents	0.0	0.0	0.0
Cash and cash equivalents, beginning of year	7.8	11.5	10.5
Cash and cash equivalents, end of year	17.1	7.8	11.5
Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash flows from operating activities:	137.6	55.0	(46.8)
Cash flows from investing activities:
Proceeds from the disposal of property, plant and equipment	0.2	0.0	0.1
Purchases of property, plant and equipment	(12.8)	(9.7)	(17.9)
Net cash used in investing activities	(12.6)	(9.7)	(17.8)
Cash flows from financing activities:
Short-term borrowings, net	(2.4)	(1.7)	1.5
Proceeds from Other Debt	145.0	40.0	100.0
Asset securitization payments	(295.0)	(60.0)	(40.0)
Long-term debt borrowings	0.0	0.0
Borrowings from credit facility	0.0	0.0	0.0
Repayments of Long-term Debt	(0.4)	(0.3)	(0.4)
Repayments of Long-term Lines of Credit	0.0	0.0	0.0
Payments of deferred financing costs	0.0	0.0	0.0
Proceeds from Stock Options Exercised	0.0	0.0	0.0
Payments Related to Tax Withholding for Share-based Compensation	0.0	0.0	0.0
Repurchases of common stock	0.0	0.0	0.0
Excess Tax Benefit from Share-based Compensation, Financing Activities	0.0	0.0	0.0
Proceeds from (Repayments of) Related Party Debt	35.8	2.3	(4.6)
Increase (Decrease) in Accounts Payable, Related Parties	(2.8)	(8.7)	15.2
Payments of Ordinary Dividends, Common Stock	0.0	0.0	0.0
Net Cash Provided by (Used in) Financing Activities	(119.8)	(28.4)	71.7
Increase (decrease) in cash and cash equivalents	5.2	16.9	7.1
Effect of exchange rates on cash and cash equivalents	3.9	11.3	8.5
Cash and cash equivalents, beginning of year	30.6	25.0	26.4
Cash and cash equivalents, end of year	31.9	30.6	25.0
Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash flows from operating activities:	0.0	0.0	0.0
Cash flows from investing activities:
Proceeds from the disposal of property, plant and equipment	0.0	0.0	0.0
Purchases of property, plant and equipment	0.0	0.0	0.0
Net cash used in investing activities	0.0	0.0	0.0
Cash flows from financing activities:
Short-term borrowings, net	0.0	0.0	0.0
Proceeds from Other Debt	0.0	0.0	0.0
Asset securitization payments	0.0	0.0	0.0
Long-term debt borrowings	0.0	0.0
Borrowings from credit facility	0.0	0.0	0.0
Repayments of Long-term Debt	0.0	0.0	0.0
Repayments of Long-term Lines of Credit	0.0	0.0	0.0
Payments of deferred financing costs	0.0	0.0	0.0
Proceeds from Stock Options Exercised	0.0	0.0	0.0
Payments Related to Tax Withholding for Share-based Compensation	0.0	0.0	0.0
Repurchases of common stock	0.0	0.0	0.0
Excess Tax Benefit from Share-based Compensation, Financing Activities	0.0	0.0	0.0
Proceeds from (Repayments of) Related Party Debt	0.0	0.0	0.0
Increase (Decrease) in Accounts Payable, Related Parties	0.0	0.0	0.0
Payments of Ordinary Dividends, Common Stock	0.0	0.0	0.0
Net Cash Provided by (Used in) Financing Activities	0.0	0.0	0.0
Increase (decrease) in cash and cash equivalents	0.0	0.0	0.0
Effect of exchange rates on cash and cash equivalents	0.0	0.0	0.0
Cash and cash equivalents, beginning of year	0.0	0.0	0.0
Cash and cash equivalents, end of year	$ 0.0	$ 0.0	$ 0.0