Employee Benefits (Narrative) (Details)
$ in Millions |
9 Months Ended |
|
|
|
Sep. 30, 2016
USD ($)
|
Jan. 01, 2017 |
Oct. 01, 2016
USD ($)
|
| Retirement Plans |
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|
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Employer Contribution |
$ 8.8
|
|
|
| Defined Benefit Plan, Expected Contributions in Current Fiscal Year |
9.4
|
|
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| Other Postretirement Benefit Plans |
|
|
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Defined Benefit Plan, Employer Contribution |
1.6
|
|
|
| Defined Benefit Plan, Expected Contributions in Current Fiscal Year |
$ 1.7
|
|
|
| Subsequent Event | Other Postretirement Benefit Plans |
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|
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| Defined Benefit Plan, Plan Amendment [Abstract] |
|
|
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| Defined Benefit Plan, decrease in benefit obligation |
|
|
$ 32.7
|
| $1,000 or $2,250 deductible plan options | Scenario, Forecast | Maximum | Other Postretirement Benefit Plans |
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
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| Age Eligible for Benefit |
|
65
|
|
| Medicare advantage plan | Scenario, Forecast | Minimum | Other Postretirement Benefit Plans |
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| Defined Benefit Plan Disclosure [Line Items] |
|
|
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| Age Eligible for Benefit |
|
65
|
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