Supplemental Balance Sheet Data - AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, Balance at the beginning of the period	$ 338.3
Income from other comprehensive income items	3.8	$ 5.5
Provision for income taxes	0.8	0.7
Other comprehensive income	3.0	4.8
AOCI, Balance at the end of the period	348.5
Income tax benefit	(6.2)	(9.3)
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cost of products sold and selling, general and administrative expenses	2.0	1.8
Income tax benefit	0.7	$ 0.7
Net unrealized foreign currency translation gain (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, Balance at the beginning of the period	(27.4)
Other comprehensive income before reclassifications	1.7
Amounts reclassified from AOCI	0.0
Income from other comprehensive income items	1.7
Provision for income taxes	0.1
Other comprehensive income	1.6
AOCI, Balance at the end of the period	(25.8)
Net gain (loss) from pension and other postretirement liabilities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, Balance at the beginning of the period	(64.5)
Other comprehensive income before reclassifications	0.0
Amounts reclassified from AOCI	2.0
Income from other comprehensive income items	2.0
Provision for income taxes	0.7
Other comprehensive income	1.3
AOCI, Balance at the end of the period	(63.2)
Unrealized gain (loss) on “available-for-sale” securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, Balance at the beginning of the period	(0.1)
Other comprehensive income before reclassifications	0.1
Amounts reclassified from AOCI	0.0
Income from other comprehensive income items	0.1
Provision for income taxes	0.0
Other comprehensive income	0.1
AOCI, Balance at the end of the period	0.0
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, Balance at the beginning of the period	(92.0)
Other comprehensive income before reclassifications	1.8
Amounts reclassified from AOCI	2.0
Income from other comprehensive income items	3.8
Provision for income taxes	0.8
Other comprehensive income	3.0
AOCI, Balance at the end of the period	$ (89.0)