Income Taxes - Deferred Tax Assets and Liabilities (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
---|---|---|---|---|
Deferred Tax Assets [Abstract] | ||||
Pension liabilities | $ 74.2us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions | $ 70.0us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions | ||
Retirement benefits other than pensions | 77.8us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits | 60.7us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits | ||
Workers' compensation and other claims | 42.4us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits | 35.1us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits | ||
Property and equipment, net | 4.1us-gaap_DeferredTaxAssetsOther | 0us-gaap_DeferredTaxAssetsOther | ||
Other assets and liabilities | 135.2us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities | 138.6us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities | ||
Net operating loss carryforwards | 47.4us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 26.8us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | ||
Alternative minimum and other tax credits | 46.7us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax | 44.7us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax | ||
Subtotal | 427.8us-gaap_DeferredTaxAssetsGross | 375.9us-gaap_DeferredTaxAssetsGross | ||
Valuation Allowance | (40.1)us-gaap_DeferredTaxAssetsValuationAllowance | (32.4)us-gaap_DeferredTaxAssetsValuationAllowance | (47.4)us-gaap_DeferredTaxAssetsValuationAllowance | (43.9)us-gaap_DeferredTaxAssetsValuationAllowance |
Total Deferred Tax Asset | 387.7us-gaap_DeferredTaxAssetsNet | 343.5us-gaap_DeferredTaxAssetsNet | ||
Deferred Tax Liabilities [Abstract] | ||||
Property and equipment, net | 0us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | 9.9us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | ||
Other assets and miscellaneous | 38.9us-gaap_DeferredTaxLiabilitiesOtherFiniteLivedAssets | 31.0us-gaap_DeferredTaxLiabilitiesOtherFiniteLivedAssets | ||
Deferred tax liabilities | 38.9us-gaap_DeferredTaxLiabilities | 40.9us-gaap_DeferredTaxLiabilities | ||
Net deferred tax asset | 348.8us-gaap_DeferredTaxAssetsLiabilitiesNet | 302.6us-gaap_DeferredTaxAssetsLiabilitiesNet | ||
Deferred Tax Assets (Liabilities), Net [Abstract] | ||||
Current assets | 71.9bco_DeferredTaxAssetsCurrent | 72.0bco_DeferredTaxAssetsCurrent | ||
Noncurrent assets | 289.5bco_DeferredTaxAssetsNoncurrent | 251.7bco_DeferredTaxAssetsNoncurrent | ||
Current liabilities, included in accrued liabilities | (1.8)us-gaap_DeferredTaxLiabilitiesCurrent | (3.1)us-gaap_DeferredTaxLiabilitiesCurrent | ||
Deferred Tax Liabilities, Noncurrent | (10.8)us-gaap_DeferredTaxLiabilitiesNoncurrent | (18.0)us-gaap_DeferredTaxLiabilitiesNoncurrent | ||
Net deferred tax asset | 348.8us-gaap_DeferredTaxAssetsLiabilitiesNet | 302.6us-gaap_DeferredTaxAssetsLiabilitiesNet | ||
Alternative minimum and other tax credits - unlimited carryforward period | 34.4bco_DeferredTaxAssetsAlternativeMinimumAndOtherTaxCreditsNotSubjectToExpiration | |||
Alternative minimum and other tax credits - various carryforward periods | 1.9bco_DeferredTaxAssetsAlternativeMinimumAndOtherTaxCreditsSubjectToExpiration | |||
Foreign Tax Credit Carryforward Amount | $ 10.4bco_ForeignTaxCreditCarryforwardAmount |
X | ||||||||||
- Definition
The amount of Alternative minimum and other tax credits available to reduce future taxable income, which are not subject to expiration dates. No definition available.
|
X | ||||||||||
- Definition
The amount of Alternative minimum and other tax credits available to reduce future taxable income, which are subject to expiration dates. No definition available.
|
X | ||||||||||
- Definition
Represents the net amount of deferred tax assets (after reduction for valuation allowance) as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets that are classified as current in the financial statements, or that are expected to reverse in the next twelve months (or normal operating cycle, if longer). A temporary difference is a difference between the tax basis of an asset and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference. No definition available.
|
X | ||||||||||
- Definition
Represents the amount of deferred tax assets (after reduction for valuation allowance) as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets that are classified as noncurrent in the financial statements, or that are expected to reverse after the next twelve months (or beyond the normal operating cycle, if longer). A temporary difference is a difference between the tax basis of an asset or liability and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference. No definition available.
|
X | ||||||||||
- Definition
The amount of the foreign tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. No definition available.
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences derived regulatory assets and liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from employee benefit costs not otherwise specified in the taxonomy, which can only be deducted for tax purposes when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of deferred tax liability attributable to taxable temporary differences from long-lived assets other than property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|