Acquisitions (Details) - USD ($) $ in Millions					6 Months Ended
	Apr. 01, 2019	Sep. 18, 2018	Sep. 01, 2018	Aug. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Acquisitions, net of cash received					$ 83.0	$ 0.0
Goodwill					969.4		$ 960.5
2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables					42.5		42.5
Goodwill, Purchase Accounting Adjustments					5.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory					61.5		61.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other					9.5		8.5
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets					(11.4)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred					(4.8)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					65.4		71.7
Goodwill					463.2		468.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					375.3		372.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets					16.5		20.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					1,033.9		1,045.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable					35.2		35.2
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					(6.6)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt					0.1		3.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities					112.5		116.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities					204.4		211.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					829.5		834.3
Diamond Chain [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	$ 6.7
Business Acquisition, Effective Date of Acquisition	Apr. 01, 2019
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	$ 24.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	19.4
Goodwill	17.7				17.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	26.7				26.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	0.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	99.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	5.6
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	1.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	12.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	84.9
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period					60.0
Cash Acquired from Acquisition					1.8
Business Combination, Acquisition Related Costs					1.3
Cone Drive [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition		Sep. 18, 2018
Cone Drive [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition			Sep. 01, 2018
Acquisitions, net of cash received					2.9
ABC Bearings [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition				Aug. 30, 2018
Leases, Acquired-in-Place [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	2.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	2.1
Inventories, net [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets					(0.1)
Other Current Assets [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets					1.0
Other Current Assets [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	2.4
Property, plant and equipment, net [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets					(6.3)
Other Intangible Assets [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets					2.7
Other Noncurrent Assets [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets					(3.7)
Accrued Liabilities [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other					9.1		9.1
Income Taxes Payable [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other					2.9		2.5
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					0.4
Other Current Liabilities [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other					8.4		8.2
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					0.2
Other Current Liabilities [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	4.1
Short-term Debt [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other					1.9		2.5
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					(0.6)
Long-term Debt [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					(2.9)
Deferred Tax Liability [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					(3.7)
Other Noncurrent Liabilities [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other					16.9		16.9
Other Noncurrent Liabilities [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	$ 1.1
Technology-Based Intangible Assets [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired					$ 5.2
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					14 years
Customer Relationships [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired					$ 9.2
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					16 years
Pension Plan [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other					$ 5.7		5.7
Postretirement Benefit Plans [Member] | 2018 Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other					11.7		$ 11.7
Trade Names [Member] | Diamond Chain [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired					$ 12.3
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					0 years