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Segment Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of reportable segments |  |  | 2 |
Executive retirement and related costs | $ 10.9 |  | $ 10.9 |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Net sales | 359.7 | $ 368.9 | 695.6 | $ 715.7
Operating profit (loss) | 39.1 | 54.1 | 86.9 | 93.4
Interest expense | 3.4 | 4.2 | 7.5 | 8.2
Interest income | 0.4 | 0.5 | 0.8 | 0.9
Income before income taxes | 36.1 | 50.4 | 80.2 | 86.1
Packaging Systems [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Net sales | 259.6 | 268.0 | 502.1 | 520.9
Operating profit (loss) | 61.8 | 62.9 | 122.7 | 114.3
Delivery Systems [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Net sales | 100.6 | 101.1 | 194.1 | 195.1
Operating profit (loss) | 4.0 | 3.7 | 3.5 | 3.5
Intersegment sales elimination [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Net sales | (0.5) | (0.2) | (0.6) | (0.3)
Corporate [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Operating profit (loss) | (15.8) | (12.5) | (28.4) | (24.4)
Other unallocated items [Member] |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Operating profit (loss) | $ (10.9) | $ 0.0 | $ (10.9) | $ 0.0

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