The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Stockholders' Equity - Activities Under Equity Plan (Detail)			16 Months Ended	3 Months Ended	16 Months Ended	0 Months Ended	3 Months Ended	16 Months Ended	3 Months Ended			16 Months Ended	3 Months Ended								16 Months Ended	24 Months Ended
	Sep. 30, 2013	May 16, 2012	Sep. 30, 2013 Short-Term Incentive Plan ("STIP") [Member]	Sep. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member]	Sep. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member]	Jan. 22, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Wireless Operations [Member]	Sep. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Wireless Operations [Member]	Sep. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Wireless Operations [Member]	Sep. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Software Operations [Member]	Jun. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Software Operations [Member]	Mar. 31, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Software Operations [Member]	Sep. 30, 2013 Restricted Stock Units [Member] 2011 LTIP [Member] Software Operations [Member]	Sep. 30, 2013 Restricted Stock [Member] Non-executive directors [Member]	Jun. 30, 2013 Restricted Stock [Member] Non-executive directors [Member]	Mar. 31, 2013 Restricted Stock [Member] Non-executive directors [Member]	Dec. 31, 2012 Restricted Stock [Member] Non-executive directors [Member]	Sep. 30, 2012 Restricted Stock [Member] Non-executive directors [Member]	Jun. 30, 2012 Restricted Stock [Member] Non-executive directors [Member]	Mar. 31, 2012 Restricted Stock [Member] Non-executive directors [Member]	Dec. 31, 2011 Restricted Stock [Member] Non-executive directors [Member]	Sep. 30, 2013 Restricted Stock [Member] Non-executive directors [Member]	Sep. 30, 2013 Restricted Stock [Member] Non-executive directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity securities available at May 16, 2012		2,194,986
Add: 2011 LTIP RSUs forfeited by eligible employees				22,414	126,489		2,689		19,725		2,781										2,452
Less: Equity Plan shares awarded			(41,702)	(156,878)		(253,739)		(392,719)	(17,898)	(3,518)	(20,676)	(164,765)	(6,266)	(4,606)	(4,712)	(5,350)	(5,263)	(4,084)	(3,769)	(3,785)	(23,278)	(37,835)
Total equity securities available at June 30, 2013	1,701,463