Segment Information - Segment Assets (Details) (USD $) In Millions, unless otherwise specified	Sep. 27, 2014	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	$ 2,264.6	$ 1,990.9
CAS
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	193.1	199.0
AVC
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	70.6	148.9
Segment Reconciling Items [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Cash and cash equivalents, including current restricted cash	66.4	83.8
Deferred tax assets	29.4	29.7
Other assets, including long-term restricted investments and marketable securities	43.2	37.7
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	2,125.6	1,839.7
Operating Segments [Member] | AQH
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	604.1	610.7
Operating Segments [Member] | SCS
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	345.5	327.7
Operating Segments [Member] | ERG
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	384.8	378.4
Operating Segments [Member] | RCH
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Assets	$ 527.5	$ 175.0