Guarantees (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]
BALANCE AT JANUARY 1,		$ 14.0	$ 13.8
Provision	[1]	3.2	2.7
Expenditures/other		(4.5)	2.1
Acquisitions	[2]	44.4	0.0
BALANCE AT MARCH 31,		$ 57.1	$ 14.4

[1] Refer to Note 7 – Other Accrued Liabilities and Note 8 – Other Non-Current Liabilities for a breakout of short-term and long-term warranties.

[2] The acquisition amount disclosed relates to the Aclara acquisition. Refer to Note 3 – Business Acquisitions for additional information.