Commitments and Contingencies (Narrative) (Details) - Redfield Site [Member]
$ in Millions |
3 Months Ended |
|
Apr. 29, 2017
USD ($)
|
|---|
| Loss Contingencies [Line Items] |
|
| Cumulative expenditures for both on-site and off-site remediation |
$ 29.2
|
| Environmental Exit Costs, Assets Previously Disposed, Liability for Remediation |
9.5
|
| Reserve for anticipated future remediation activities for on-site remediation |
4.5
|
| Reserve for anticipated future remediation activities for off-site remediation |
$ 5.0
|
| Liability for on-site remediation, discounted rate |
4.80%
|
| On-site remediation liability, undiscounted basis |
$ 14.6
|
| Expected on-site remediation liability, year one |
0.6
|
| Expected on-site remediation liability, year two |
0.1
|
| Expected on-site remediation liability, year three |
0.1
|
| Expected on-site remediation liability, year four |
0.1
|
| Expected on-site remediation liability, year five |
0.1
|
| Expected on-site remediation liability, thereafter |
13.6
|
| Other Noncurrent Liabilities [Member] |
|
| Loss Contingencies [Line Items] |
|
| Environmental Exit Costs, Assets Previously Disposed, Liability for Remediation |
8.7
|
| Other Current Liabilities [Member] |
|
| Loss Contingencies [Line Items] |
|
| Environmental Exit Costs, Assets Previously Disposed, Liability for Remediation |
$ 0.8
|