Segments of Business (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Reporting Segments Number	2bms_ReportingSegmentsNumber
Segment Reporting Information [Line Items]
Accounting alignment adjustments			$ 2.1
Sales including intersegment sales	4,343.5us-gaap_Revenues	4,476.6us-gaap_Revenues	4,583.6us-gaap_Revenues
Operating Profit and Pretax Profit:
Operating Income (Loss)	407.7us-gaap_OperatingIncomeLoss	350.2us-gaap_OperatingIncomeLoss	308.3us-gaap_OperatingIncomeLoss
Interest expense	60.8us-gaap_InterestExpense	68.2us-gaap_InterestExpense	70.9us-gaap_InterestExpense
Other non-operating (income) expense, net	(16.8)us-gaap_NonoperatingIncomeExpense	(7.7)us-gaap_NonoperatingIncomeExpense	(3.8)us-gaap_NonoperatingIncomeExpense
Income from continuing operations before income taxes	363.7	289.7	241.2
Total assets	3,615.1us-gaap_Assets	4,110.2us-gaap_Assets	4,185.7us-gaap_Assets
Depreciation and amortization	180.6	190.3	204.3
Additions to property and equipment	185.2	139.8	136.4
Long-lived assets	1,191.3us-gaap_NoncurrentAssets	1,351.1us-gaap_NoncurrentAssets	1,422.0us-gaap_NoncurrentAssets
USPackagingBeforeRestructuring [Member]
Operating Profit and Pretax Profit:
Operating Income (Loss)	375.8	382.9	408.8
USPackagingRestructuring [Member]
Operating Profit and Pretax Profit:
Operating Income (Loss)	0	(45.0)	(42.1)
USPackaging [Member]
Segment Reporting Information [Line Items]
Accounting alignment adjustments			13.8
Operating Profit and Pretax Profit:
Operating Income (Loss)	375.8	337.9	366.7
Total assets	1,977.9	2,004.5	2,095.7
Depreciation and amortization	96.3	102.4	114.6
Additions to property and equipment	105.5	80.8	65.1
GlobalPackaging [Member]
Segment Reporting Information [Line Items]
Accounting alignment adjustments			(16.4)
Operating Profit and Pretax Profit:
Operating Income (Loss)	113.3	106.4	59.9
Total assets	1,345.3	1,413.3	1,335.0
Depreciation and amortization	62.1	63.6	67.3
Additions to property and equipment	51.0	42.3	47.2
GlobalPackagingBeforeRestructuring [Member] [Member]
Operating Profit and Pretax Profit:
Operating Income (Loss)	113.3	106.8	86.5
GlobalPackagingRestructuring [Member]
Operating Profit and Pretax Profit:
Operating Income (Loss)	0	(0.4)	(26.6)
GeneralCorporateExpenses [Member]
Operating Profit and Pretax Profit:
Operating Income (Loss)	(81.4)	(94.1)	(118.3)
Unallocated amount to segment
Operating Profit and Pretax Profit:
Total assets	291.9	380.8	442.7
Depreciation and amortization	11.7	11.5	9.8
Additions to property and equipment	23.8	9.2	7.4
Discontinued Operations [Member]
Operating Profit and Pretax Profit:
Total assets	0	311.6	312.3
Depreciation and amortization	10.5	12.8	12.6
Additions to property and equipment	4.9	7.5	16.7
Continuing Operations [Member]
Operating Profit and Pretax Profit:
Depreciation and amortization	170.1	177.5	191.7
Additions to property and equipment	180.3	132.3	119.7
United States [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	3,040.8	3,143.2	3,142.3
Operating Profit and Pretax Profit:
Long-lived assets	836.1	906.2	938.3
Brazil [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	581.5	629.6	712.5
Operating Profit and Pretax Profit:
Long-lived assets	159.0	179.9	217.0
Other Americas [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	273.2	299.8	361.7
Operating Profit and Pretax Profit:
Long-lived assets	55.7	64.3	77.3
Europe [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	258.8	245.4	245.0
Operating Profit and Pretax Profit:
Long-lived assets	68.1	126.4	135.3
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	189.2	158.6	122.1
Operating Profit and Pretax Profit:
Long-lived assets	72.4	74.3	54.1
Intersegment Eliminations [Member] \| USPackaging [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	(28.8)	(28.5)	(22.5)
Intersegment Eliminations [Member] \| GlobalPackaging [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	(24.8)	(26.8)	(17.8)
Operating Segments [Member] \| USPackaging [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	2,889.5	3,013.1	3,062.6
Operating Segments [Member] \| GlobalPackaging [Member]
Segment Reporting Information [Line Items]
Sales including intersegment sales	$ 1,507.6	$ 1,518.8	$ 1,561.3

The number of reportable segments of the entity.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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The net result for the period of deducting operating expenses from operating revenues.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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Amount of each individual error being corrected in the correcting adjustment.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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