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Revenue Recognition (Tables)

6 Months Ended

Mar. 31, 2019

Revenue Recognition

Schedule of revenues disaggregated by revenue sources

		Three months ended						Six months ended
		March 31,			March 31,			March 31,			March 31,
		2019			2018			2019			2018
		(in millions)
Cost reimbursable		$	2,567.9		$	2,251.7		$	5,139.5		$	4,608.9
Guaranteed maximum price			1,003.6			1,149.8			2,027.6			2,328.4
Fixed price			1,468.5			1,389.4			2,910.4			2,764.4
Total revenue		$	5,040.0		$	4,790.9		$	10,077.5		$	9,701.7

		Three months ended						Six months ended
		March 31,			March 31,			March 31,			March 31,
		2019			2018			2019			2018
		(in millions)
Americas		$	4,025.7		$	3,784.8		$	8,096.1		$	7,713.5
Europe, Middle East, Africa			577.1			632.4			1,127.2			1,221.7
Asia Pacific			437.2			373.7			854.2			766.5
Total revenue		$	5,040.0		$	4,790.9		$	10,077.5		$	9,701.7

Schedule of net accounts receivable

		March 31,			September 30,
		2019			2018
		(in millions)
Billed		$	2,685.1		$	2,697.7
Contract retentions			652.4			661.7
Total accounts receivable—gross			3,337.5			3,359.4
Allowance for doubtful accounts			(51.6)			(51.6)
Total accounts receivable—net		$	3,285.9		$	3,307.8

X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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- References

No definition available.

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- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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