Commitments and Contingencies - Environmental Matters (Narrative) (Details) $ in Millions	Jun. 24, 2016 USD ($)
Remedial Costs
Loss Contingencies [Line Items]
Minimum costs	$ 20
Maximum costs	69
Estimated loss	31
Current portion of estimated loss	11
Noncurrent portion of estimated loss	20
Remediation and Monitoring Costs
Loss Contingencies [Line Items]
Minimum costs	12
Maximum costs	44
Estimated loss	21
Current portion of estimated loss	9
Noncurrent portion of estimated loss	$ 12