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Represents the percentage of assets and liabilities acquired in the business combination.

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The amount of acquisition cost of a business combination allocated to debt assumed.

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The amount of acquisition cost of a business combination allocated to an outstanding shares of acquired entity.

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Represents the deal-related and integration costs additionally incurred to effect a business combination, which have been expensed during the period.

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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, the fair value of the liabilities assumed, and direct costs of the acquisition.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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The amount of cash and cash equivalents acquired in a business combination.

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The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

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The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

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The amount of acquisition cost of a business combination allocated to accrued expenses of the acquired entity.

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The amount of acquisition cost of a business combination allocated to deferred revenue of the acquired entity.

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

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The amount of acquisition cost of a business combination allocated to the current portion of long-term debt of the acquired entity.

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The amount of acquisition cost of a business combination allocated to other current liabilities of the acquired entity. Does not include amounts allocated to the current portion of long-term debt, accounts payable and accrued expenses.

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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.

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The amount of acquisition cost of a business combination allocated to liabilities assumed.

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-Publisher FASB

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The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill.

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-Publisher FASB

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The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity.

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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.

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The amount of acquisition cost of a business combination allocated to tangible assets.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 59

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The percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Increase for additional borrowings on the debt instrument during the period.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Section S99

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Interest rate stated in the contractual debt agreement.

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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 02

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Business Combinations and Divestitures (Details) (USD $)	3 Months Ended	6 Months Ended		1 Months Ended			1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended
	Sep. 30, 2011 Bucyrus International, Inc.	Jun. 30, 2011 Bucyrus International, Inc.	Jul. 08, 2011 Bucyrus International, Inc.	May 31, 2011 Bucyrus International, Inc. Long-term debt	May 31, 2011 Bucyrus International, Inc. Floating Rate Senior Notes due in 2012	May 24, 2011 Bucyrus International, Inc. Floating Rate Senior Notes due in 2012	May 31, 2011 Bucyrus International, Inc. Floating Rate Senior Notes due in 2013	May 24, 2011 Bucyrus International, Inc. Floating Rate Senior Notes due in 2013	May 31, 2011 Bucyrus International, Inc. 1.375% Senior Notes due in 2014	May 24, 2011 Bucyrus International, Inc. 1.375% Senior Notes due in 2014	May 31, 2011 Bucyrus International, Inc. 3.90% Senior Notes due in 2021	May 24, 2011 Bucyrus International, Inc. 3.90% Senior Notes due in 2021	May 31, 2011 Bucyrus International, Inc. 5.20% Senior Notes due in 2041	May 24, 2011 Bucyrus International, Inc. 5.20% Senior Notes due in 2041	May 31, 2011 Balfour Beatty's Trackwork Business
Business Acquisition
Purchase price of acquired entity			$ 8,800,000,000												$ 60,000,000
Outstanding shares of common stock acquired			7,400,000,000
Price per share of common stock acquired (in dollars per share)			$ 92
Debt assumed			1,600,000,000
Cash acquired			203,000,000
Assets and liabilities acquired (as a percent)															100.00%
Tangible assets acquired in business combination															82,000,000
Total Liabilities Assumed															22,000,000
Additional borrowing				4,500,000,000	500,000,000		750,000,000		750,000,000		1,250,000,000		1,250,000,000
Basis for variable interest rate					Three-month USD LIBOR		Three-month USD LIBOR
Additional average spread over LIBOR (as a percent)						0.10%		0.17%
Debt instrument, interest rate (as a percent)										1.375%		3.90%		5.20%
Sales reported by the acquired entity after acquisition date	1,135,000,000
Pretax profit reported by the acquired entity after acquisition date	(200,000,000)
Cost related to acquisition		249,000,000
Losses on interest rate swaps		149,000,000
Bridge financing costs		54,000,000
Additional costs related to acquisition	122,000,000
Assets
Cash			203,000,000
Receivables			693,000,000												18,000,000
Prepaid expenses			154,000,000
Inventories			2,305,000,000												12,000,000
Property, plant and equipment net			692,000,000												52,000,000
Intangible assets	3,901,000,000		3,901,000,000
Goodwill			5,263,000,000
Other assets			48,000,000
Liabilities
Short-term borrowings			24,000,000
Current portion - long-term debt			16,000,000
Accounts payable			444,000,000												10,000,000
Accrued expenses			405,000,000
Customer advances			668,000,000
Other current liabilities			426,000,000
Long-term debt			1,514,000,000
Other liabilities			2,308,000,000
Accrued expenses assumed															10,000,000
Net assets acquired			$ 7,454,000,000