Commitments and Contingencies - Asbestos Damages Sought (Details) (Asbestos [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Compensatory and Punitive Damages [Member] | Range 1 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	$ 0
Compensatory and Punitive Damages [Member] | Range 1 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Compensatory and Punitive Damages [Member] | Range 2 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Compensatory and Punitive Damages [Member] | Range 2 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	10.0
Compensatory and Punitive Damages [Member] | Range 3 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	10.0
Compensatory Only Damages [Member] | Range 1 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0
Compensatory Only Damages [Member] | Range 1 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0.6
Compensatory Only Damages [Member] | Range 2 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0.6
Compensatory Only Damages [Member] | Range 2 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Compensatory Only Damages [Member] | Range 3 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Punitive Only Damages [Member] | Range 1 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0
Punitive Only Damages [Member] | Range 1 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	2.5
Punitive Only Damages [Member] | Range 2 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	2.5
Punitive Only Damages [Member] | Range 2 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Punitive Only Damages [Member] | Range 3 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	$ 5.0
Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	117
Pending Litigation [Member] | Compensatory and Punitive Damages [Member] | Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	77
Pending Litigation [Member] | Compensatory and Punitive Damages [Member] | Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	24
Pending Litigation [Member] | Compensatory and Punitive Damages [Member] | Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	16
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	24
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	58
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	35
Pending Litigation [Member] | Punitive Only Damages [Member] | Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	111
Pending Litigation [Member] | Punitive Only Damages [Member] | Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	5
Pending Litigation [Member] | Punitive Only Damages [Member] | Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	1