Acquisitions and Divestitures - Purchase Price Allocation Identifiable Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Document Period End Date		Dec. 31, 2019
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 84.4
Operating Lease, Right-of-Use Asset		114.1	$ 0.0		$ 114.1
Goodwill		993.7	960.5	$ 511.8
Payments to Acquire Businesses, Net of Cash Acquired		226.5	765.4	$ 346.8
Stock Issued During Period, Value, Acquisitions			$ (66.0)
Trade names [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		0.0
Software and Software Development Costs [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 0.5
Trade names [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life		0 years	0 years
2018 Acquisitions [Member]
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value			$ 0.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		$ 829.5	834.3
Accounts receivable			42.5
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			375.4
Inventories			61.6
Property, plant and equipment			71.7
Operating Lease, Right-of-Use Asset			0.0
Goodwill			468.2
Other intangible assets			372.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other			8.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			20.2
Total assets acquired			1,045.3
Accounts payable, trade			35.2
Working Capital Purchase Price Adjustment, Acquisitions		(4.8)	0.0
Payments to Acquire Businesses, Net of Cash Acquired			765.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			3.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities			116.2
Stock Issued During Period, Value, Acquisitions			(66.0)
Total liabilities assumed			$ 211.0
2018 Acquisitions [Member] | Technology-Based Intangible Assets [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life			17 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 122.3
2018 Acquisitions [Member] | Trade names [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life			10 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 4.4
2018 Acquisitions [Member] | Customer Relationships [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life			18 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 201.5
2018 Acquisitions [Member] | Software and Software Development Costs [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life			5 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 1.7
2018 Acquisitions [Member] | Trade names [Member]
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired			45.3
Cone Drive [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Payments to Acquire Businesses, Net of Cash Acquired	$ 2.9
2019 Acquisitions [Member]
Business Acquisition Purchase Price Allocation Identifiable Intangible Assets [Line Items]
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value		1.8
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest		228.4
Accounts receivable		26.3
Business Acquisition Purchase price allocation identifiable intangible assets
Inventories		62.9
Property, plant and equipment		57.4
Operating Lease, Right-of-Use Asset		4.7
Goodwill		44.2
Other intangible assets		84.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		4.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		0.7
Total assets acquired		285.5
Accounts payable, trade		10.8
Payments to Acquire Businesses, Net of Cash Acquired		226.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		17.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		5.1
Stock Issued During Period, Value, Acquisitions		0.0
Total liabilities assumed		$ 55.3
2019 Acquisitions [Member] | Technology-Based Intangible Assets [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life		17 years
Finite-lived Intangible Assets Acquired		$ 22.4
2019 Acquisitions [Member] | Customer Relationships [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life		19 years
Finite-lived Intangible Assets Acquired		$ 33.3
2019 Acquisitions [Member] | Software and Software Development Costs [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Intangible Assets, Weighted Average Life		2 years
BEKA [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other intangible assets		$ 55.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		17.9
Accrued Liabilities [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			9.1
Accrued Liabilities [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		6.8
Income Taxes Payable [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			2.5
Income Taxes Payable [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		2.1
Other Current Liabilities [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			8.2
Other Current Liabilities [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		6.7
Short-term Debt [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			2.5
Short-term Debt [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		0.8
Leases, Acquired-in-Place [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			0.0
Leases, Acquired-in-Place [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		4.1
Other Noncurrent Liabilities [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other non-current liabilities			16.9
Other Noncurrent Liabilities [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other non-current liabilities		1.1
Postretirement Benefit Plans [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other non-current liabilities			11.7
Postretirement Benefit Plans [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other non-current liabilities		0.1
Pension Plan [Member] | 2018 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other non-current liabilities			$ 5.7
Pension Plan [Member] | 2019 Acquisitions [Member]
Business Acquisition Purchase price allocation identifiable intangible assets
Other non-current liabilities		$ 0.5