Commitments and Contigencies - Textual Information (Details) - USD ($) $ in Millions				3 Months Ended	12 Months Ended
	Oct. 30, 2015	Aug. 31, 2015	Jun. 19, 2015	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Minimum annual rental commitments, net of amounts due under subleases
Minimum annual rental commitments, net of amounts due under subleases in year one					$ 183.0
Minimum annual rental commitments, net of amounts due under subleases in year two					119.0
Minimum annual rental commitments, net of amounts due under subleases in year three					65.0
Minimum annual rental commitments, net of amounts due under subleases in year four					51.0
Minimum annual rental commitments, net of amounts due under subleases in year five					21.0
Minimum annual rental commitments, net of amounts due under subleases thereafter year five					151.0
Operating leases rent expense, net
Rent expense					514.0	$ 747.0	$ 702.0
Litigation
Litigation settlements				$ (13.0)	(13.0)	62.0	$ 0.0
Claims amount for terminated contract					67.9
Additional claim amount for terminated contract					57.0
Breach of contract counter suit amount					182.0
Accrual for environmental loss contingencies
Accrual for Environmental Remediation					35.0	35.0
Environmental Remediation Accrual for Various Superfund Sites					2.0	$ 3.0
Other Commitments
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability					1,200.0
Purchase Obligations
Purchase obligations related to capital expenditures, inventory and services under contracts, Due in Next Twelve Months					202.0
Purchase obligations related to capital expenditures, inventory and services under contracts, Due within Two Years					187.0
Purchase obligations related to capital expenditures, inventory and services under contracts, Due within Three Years					162.0
Purchase obligations related to capital expenditures, inventory and services under contracts, Due within Four Years					124.0
Purchase obligations related to capital expenditures, inventory and services under contracts, Due within Five Years					106.0
Purchase obligations related to capital expenditures, inventory and services under contracts, Due after Five Years					$ 67.0
Pending Litigation [Member] | German Institute of Arbitration e.V. (DIS) [Member]
Litigation
Loss Contingency, Damages Sought, Value			$ 170.0
Pending Litigation [Member] | German Institute of Arbitration e.V. (DIS) [Member] | Prime Rate [Member]
Litigation
Loss Contingency, Damages Sought, Interest			5.00%
Pending Litigation [Member] | Failure to purchase required tonnage [Member]
Litigation
Loss Contingency, Damages Sought, Value	$ 110.0
Threatened Litigation [Member] | Letter of Claim pursuant to a Construction and Engineering Contract [Member]
Litigation
Loss Contingency, Damages Sought, Value		$ 369.0