Acquisitions (Details 3) (Brink's Home Security Holdings, Inc., now operating as Broadview Security, USD $) In Millions, unless otherwise specified	1 Months Ended
May 31, 2010	May 14, 2010
Brink's Home Security Holdings, Inc., now operating as Broadview Security
Business Acquisition Purchase Price Allocation
Net current assets		$ 78
Subscriber systems		624
Other property, plant and equipment		49
Total property, plant and equipment		673
Contracts and related customer relationships		738
Other intangible assets		12
Total intangible assets		750
Net non-current liabilities		(459)
Net assets acquired		1,042
Goodwill		932
Purchase price		1,974
Contracts and related customer relationships, weighted average useful life (in years)	10
Other intangible assets, weighted average useful life (in years)	4
Fair value of acquired receivables, net		32
Fair value of acquired receivables, gross		35
Acquired receivables, allowance for uncollectible amounts		3
Acquired deferred tax liabilities		$ 456

The weighted average amortization period of acquired contracts and related customer relationships.

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- Definition

The weighted average amortization period of acquired other intangible assets not separately identified in the taxonomy.

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities and the fair value of the liabilities assumed.

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- Definition

The amount of acquisition cost of a business combination allocated to contracts and related customer relationship intangible assets that will be amortized.

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- Definition

The amount of acquisition cost of a business combination allocated to other intangible assets not otherwise defined in the taxonomy that will be amortized.

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- Definition

The amount of acquisition cost of a business combination allocated to total intangible assets that will be amortized.

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- Definition

The amount of acquisition cost of a business combination allocated to current assets and current liabilities, net.

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- Definition

The amount of acquisition cost of a business combination allocated to noncurrent assets and noncurrent liabilities, net.

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to deferred tax liabilities assumed from the acquired entity.

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to property, plant and equipment not otherwise defined in the taxonomy.

+ Details

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- Definition

The amount of acquisition cost of a business combination allocated to installed security-monitoring assets.

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 52
-Subparagraph c

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 53
-Subparagraph d

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- Definition

The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph e

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 37
-Subparagraph d

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows not expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 03-3
-Paragraph 3
-Subparagraph a-g

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 6
-Subparagraph b(ii)

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph h(3)

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the fair value of the receivables acquired, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

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For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

+ Details

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- Definition

The net amount recognized as of the acquisition date for the aggregate identifiable assets acquired in excess of or less than the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph i

+ Details

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