Towers Watson & Co. 10-Q 6 May 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Amendment Flag	'false	'
Document Fiscal Period Focus	'Q3	'
Document Fiscal Year Focus	'2014	'
Current Fiscal Year End Date	'--06-30	'
Entity Central Index Key	'0001470215	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Registrant Name	'Towers Watson & Co.	'
Entity Common Stock, Shares Outstanding	'	70,299,510

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'	'	'
Revenue	$904,833	$892,977	$2,602,927	$2,597,233
Costs of providing services:	'	'	'	'
Salaries and employee benefits	547,385	542,271	1,574,535	1,590,530
Professional and subcontracted services	57,729	62,908	188,203	189,751
Occupancy	33,961	34,666	102,288	107,116
General and administrative expenses	82,844	76,381	236,651	233,163
Depreciation and amortization	44,250	43,166	130,931	130,970
Transaction and integration expenses	241	12,328	1,049	30,753
Cost of Services	766,410	771,720	2,233,657	2,282,283
Income from operations	138,423	121,257	369,270	314,950
Loss from affiliates	0	0	0	-56
Interest income	758	613	1,847	2,118
Interest expense	-2,090	-3,483	-6,553	-10,043
Other non-operating income	4,053	12	9,743	5,060
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	141,144	118,399	374,307	312,029
Provision for income taxes	39,231	35,254	96,322	99,649
INCOME FROM CONTINUING OPERATIONS	101,913	83,145	277,985	212,380
Income from discontinued operations, net of tax of $175, $6,621, $41,012, and $11,158, respectively	3,939	11,700	5,980	20,858
NET INCOME BEFORE NON-CONTROLLING INTERESTS	105,852	94,845	283,965	233,238
Less: Income (loss) attributable to non-controlling interests	3,346	-71	7,057	-2,695
NET INCOME (attributable to common stockholders)	$102,506	$94,916	$276,908	$235,933
Earnings per share:	'	'	'	'
Basic earnings per share - Income from continuing operations (in dollars per share)	$1.40	$1.18	$3.83	$3.03
Basic earnings per share - Income from discontinued operations (in dollars per share)	$0.06	$0.17	$0.09	$0.29
Basic earnings per share - Net income (in dollars per share)	$1.46	$1.35	$3.92	$3.32
Diluted earnings per share - Income from continuing operations (in dollars per share)	$1.39	$1.17	$3.81	$3
Diluted earnings per share - Income from discontinued operations (in dollars per share)	$0.06	$0.17	$0.09	$0.29
Diluted earnings per share - Net income (in dollars per share)	$1.45	$1.34	$3.90	$3.29
Weighted average shares of common stock, basic (in shares)	70,447	70,530	70,685	71,094
Weighted average shares of common stock, diluted (in shares)	70,884	71,076	71,047	71,639

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'	'	'
Discontinued operations, tax provision	$175	$6,621	$41,012	$11,158

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income before non-controlling interests	$105,852	$94,845	$283,965	$233,238
Other comprehensive income/(loss), net of tax:	'	'	'	'
Foreign currency translation	-797	-96,135	87,938	-47,412
Defined pension and post-retirement benefit costs	2,806	-4,137	9,337	-21,260
Hedge effectiveness	292	546	-738	-250
Available-for-sale securities	-483	93	-261	149
Other comprehensive income/(loss) before non-controlling interests	1,818	-99,633	96,276	-68,773
Comprehensive income before non-controlling interests	107,670	-4,788	380,241	164,465
Comprehensive income/(loss) attributable to non-controlling interest	3,325	-1,316	6,422	-3,072
Comprehensive income/(loss) (attributable to common stockholders)	$104,345	($3,472)	$373,819	$167,537

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$636,960	$532,805
Fiduciary assets	10,651	148,414
Short-term investments	28,455	56,645
Receivables from clients:	'	'
Billed, net of allowances of $10,528 and $12,768	492,353	519,580
Unbilled, at estimated net realizable value	322,714	306,258
Current receivables, net	815,067	825,838
Other current assets	131,700	148,519
Total current assets	1,622,833	1,712,221
Fixed assets, net	362,317	346,915
Deferred income taxes	77,537	86,313
Goodwill	2,284,097	2,218,935
Intangible assets, net	671,178	687,758
Other assets	324,707	279,935
Total Assets	5,342,669	5,332,077
Liabilities	'	'
Accounts payable, accrued liabilities and deferred income	349,602	351,648
Employee-related liabilities	448,548	560,831
Fiduciary liabilities	10,651	148,414
Term loan - current	25,000	25,000
Other current liabilities	65,891	26,980
Total current liabilities	899,692	1,112,873
Revolving credit facility	0	0
Term loan	206,250	225,000
Accrued retirement benefits and other employee-related liabilities	667,985	771,429
Professional liability claims reserve	261,126	251,191
Other noncurrent liabilities	270,528	226,750
Total Liabilities	2,305,581	2,587,243
Commitments and contingencies	'	'
Stockholders’ Equity	'	'
Common stock	746	746
Additional paid-in capital	1,854,733	1,850,448
Treasury stock, at cost — 4,181,350 and 3,836,338 shares	-280,416	-221,643
Retained earnings	1,650,410	1,394,407
Accumulated other comprehensive loss	-202,553	-299,464
Total Stockholders’ Equity	3,022,920	2,724,494
Non-controlling interest	14,168	20,340
Total Equity	3,037,088	2,744,834
Total Liabilities and Total Equity	5,342,669	5,332,077
Class A Common Stock — $0.01 par value: 300,000,000 shares authorized; 74,552,661 and 69,178,097 issued and 70,371,311 and 65,341,759 outstanding	'	'
Stockholders’ Equity	'	'
Common stock	746	692
Class B Common Stock — $0.01 par value: 93,500,000 shares authorized; 0 and 5,374,070 issued and outstanding	'	'
Stockholders’ Equity	'	'
Common stock	$0	$54

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parentheticals) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, except Share data, unless otherwise specified
Treasury stock, shares	4,181,350	3,836,338
Allowance for doubtful accounts receivable, current	$10,528	$12,768
Common Stock, Value, Issued	746	746
Common Class A [Member]	'	'
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	74,552,661	69,178,097
Common stock, shares outstanding	70,371,311	65,341,759
Common Stock, Value, Issued	746	692
Common Class B [Member]	'	'
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	93,500,000	93,500,000
Common stock, shares issued	0	5,374,070
Common stock, shares outstanding	0	5,374,070
Common Stock, Value, Issued	$0	$54

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income before non-controlling interests	$283,965	$233,238
Adjustments to reconcile net income to net cash from operating activities:	'	'
Provision for doubtful receivables from clients	4,241	8,204
Depreciation	73,967	73,762
Amortization of intangible assets	57,402	59,287
Gain on sale of discontinued operations, pretax	-23,631	0
Provision for deferred income taxes	64,052	39,120
Stock-based compensation	16,045	24,203
Other, net	-3,743	-2,333
Changes in operating assets and liabilities	'	'
Receivables from clients	16,846	112
Fiduciary assets	113,017	-6,796
Other current assets	1,016	-10,053
Other noncurrent assets	-6,432	1,260
Accounts payable, accrued liabilities and deferred income	-34,948	-8,706
Employee-related liabilities	-128,510	-40,326
Fiduciary liabilities	-113,017	6,796
Accrued retirement benefits and other employee-related liabilities	-113,690	-118,029
Professional liability claims reserves	9,418	-4,997
Other current liabilities	-607	-223
Other noncurrent liabilities	-14,141	1,508
Income tax related accounts	21,501	30,484
Cash flows from operating activities	222,751	286,511
Cash flows used in investing activities:	'	'
Cash paid for business acquisitions	-210,814	-5,678
Cash transferred with discontinued operations	-25,066	0
Proceeds from discontinued operations	256,953	4,285
Cash acquired from business acquisitions	3,949	636
Fixed assets and software for internal use	-50,825	-66,626
Purchases of investments of consolidated variable interest entity	-109,510	0
Capitalized software costs	-36,596	-41,768
Purchases of held-to-maturity securities	-14,994	0
Purchases of available-for-sale securities	-44,891	-18,188
Sales and redemptions of available-for-sale securities	74,246	36,258
Cash flows used in investing activities	-157,548	-91,081
Cash flows from/(used in) financing activities:	'	'
Borrowings under credit facility	220,600	391,600
Repayments under credit facility	-220,600	-464,600
Repayments of notes payable	-18,750	0
Cash received from consolidated variable interest entity	109,510	0
Contingent retention liability	21,746	0
Cash paid on retention liabilities	-1,939	0
Dividends paid	-11,165	-48,147
Repurchases of common stock	-74,506	-41,596
Payroll tax payments on vested shares	-7,457	-24,879
Excess tax benefit	9,800	0
Cash flows from/(used in) financing activities	27,239	-187,622
Effect of exchange rates on cash	11,713	-13,296
Increase/(decrease) in cash and cash equivalents	104,155	-5,488
Cash and cash equivalents at beginning of period	532,805	478,179
Cash and cash equivalents at end of period	636,960	472,691
Supplemental disclosures:	'	'
Cash paid for interest	2,831	6,278
Cash paid for income taxes, net of refunds	45,414	43,398
Transfers into consolidated investment funds	223,212	0
Deconsolidation of investment funds (see Note 9)	$339,019	$0

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Class A [Member]	Common Class B [Member]	Additional Paid-in Capital [Member]	Treasury Stock, at cost [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Noncontrolling Interest [Member]
In Thousands, except Share data, unless otherwise specified
Balance as of at Jun. 30, 2012	$2,457,317	$635	$110	$1,833,799	($168,901)	$1,117,622	($350,745)	$24,797
Shares outstanding as of at Jun. 30, 2012	'	63,522,000	11,036,000	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	233,238	'	'	'	'	235,933	'	-2,695
Other comprehensive income/(loss)	-68,773	'	'	'	'	'	-68,396	-377
Repurchases of common stock	-46,618	'	'	'	-46,618	'	'	'
Shares received for employee taxes on conversion of restricted shares, shares	'	-429,000	'	'	'	'	'	'
Shares received for employee taxes upon vesting of restricted stock units, value	-24,879	-4	'	'	-24,875	'	'	'
Exercises of stock options	818	'	'	-5,560	6,378	'	'	'
Vesting of restricted stock units, value	922	'	'	-30,570	31,492	'	'	'
Vesting of restricted stock units, shares	'	-89,000	'	'	'	'	'	'
Deconsolidation of redeemable non-controlling interest from variable interest entity	0	'	'	'	'	'	'	'
Class A Common Stock:	'	'	'	'	'	'	'	'
Cash dividends declared	-42,023	'	'	'	'	-42,023	'	'
Stock-based compensation	24,203	'	'	24,203	'	'	'	'
Acceleration of Class B shares to Class A shares, number of shares	'	5,661,000	-5,662,000	'	'	'	'	'
Acceleration of Class B shares to Class A shares, value	'	56	-56	'	'	'	'	'
Balance as of at Mar. 31, 2013	2,534,205	687	54	1,821,872	-202,524	1,311,532	-419,141	21,725
Shares outstanding as of at Mar. 31, 2013	'	68,665,000	5,374,000	'	'	'	'	'
Balance as of at Jun. 30, 2013	2,744,834	692	54	1,850,448	-221,643	1,394,407	-299,464	20,340
Shares outstanding as of at Jun. 30, 2013	'	69,178,000	5,374,000	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	283,965	'	'	'	'	276,908	'	7,057
Other comprehensive income/(loss)	96,276	'	'	'	'	'	96,911	-635
Repurchases of common stock	-74,506	'	'	'	-74,506	'	'	'
Shares received for employee taxes upon vesting of restricted stock units, value	-7,457	'	'	'	-7,457	'	'	'
Exercises of stock options	684	'	'	-4,380	5,064	'	'	'
Vesting of restricted stock units, value	-6,808	'	'	-24,934	18,126	'	'	'
Acquisitions	420	'	'	6,717	'	'	'	-6,297
Subscriptions of non-controlling interest holders in consolidated VIEs	332,722	'	'	'	'	'	'	332,722
Deconsolidation of redeemable non-controlling interest from variable interest entity	-339,019	'	'	'	'	'	'	-339,019
Class A Common Stock:	'	'	'	'	'	'	'	'
Cash dividends declared	-20,905	'	'	'	'	-20,905	'	'
Excess tax benefits	9,800	'	'	9,800	'	'	'	'
Stock-based compensation	17,082	'	'	17,082	'	'	'	'
Acceleration of Class B shares to Class A shares, number of shares	'	5,374,000	-5,374,000	'	'	'	'	'
Acceleration of Class B shares to Class A shares, value	'	54	-54	'	'	'	'	'
Balance as of at Mar. 31, 2014	$3,037,088	$746	$0	$1,854,733	($280,416)	$1,650,410	($202,553)	$14,168
Shares outstanding as of at Mar. 31, 2014	'	74,552,000	0	'	'	'	'	'

Organization_and_Basis_of_Pres

Organization and Basis of Presentation	9 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization and Basis of Presentation	'
	Organization and Basis of Presentation.
	The accompanying unaudited quarterly condensed consolidated financial statements of Towers Watson & Co. (“Towers Watson”, the “Company” or “we”) and our subsidiaries are presented in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) for quarterly reports on Form 10-Q and therefore do not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”). In the opinion of management, these condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair presentation of the condensed consolidated financial statements and results for the interim periods. All intercompany accounts and transactions have been eliminated in consolidation. The condensed consolidated financial statements should be read together with the Towers Watson audited condensed consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2013, which was filed with the SEC on August 15, 2013, and may be accessed via EDGAR on the SEC’s web site at www.sec.gov. Balance sheet data as of June 30, 2013 was derived from Towers Watson’s audited financial statements.
	Towers Watson was formed on January 1, 2010, upon the merger (the “Merger”) of Watson Wyatt Worldwide, Inc. (“Watson Wyatt”) and Towers, Perrin, Forster & Crosby, Inc. (“Towers Perrin”).
	Our fiscal year 2014 began July 1, 2013 and ends June 30, 2014.
	The results of operations for the three and nine months ended March 31, 2014 are not necessarily indicative of the results that can be expected for the entire fiscal year ending June 30, 2014. The results reflect certain estimates and assumptions made by management including those estimates used in calculating acquisition consideration and fair value of tangible and intangible assets and liabilities, professional liability claims, estimated bonuses, valuation of billed and unbilled receivables, and anticipated tax liabilities that affect the amounts reported in the condensed consolidated financial statements and related notes.
	As discussed further in Note 2 – Acquisitions and Divestitures, we have classified the operating results of our reinsurance and property and casualty insurance brokerage business as discontinued operations for all periods presented in our condensed consolidated statements of operations. This business was sold in November 2013.

Acquisitions_and_Divestitures

Acquisitions and Divestitures	9 Months Ended
	Mar. 31, 2014
Acquisitions and Divestitures [Abstract]	'
Acquisitions and Divestitures	'
	Acquisitions and Divestitures.
	Acquisition
	There was one acquisition in the nine months ended March 31, 2014, which was not material for the purposes of financial statement disclosures as required by Accounting Standards Codification (“ASC”) 805. Our acquisition information is included to provide our investors with a better understanding of our strategic acquisitions.
	Liazon Corporation Acquisition
	On November 22, 2013, Towers Watson purchased Liazon Corporation (“Liazon”), a leader in developing and delivering private benefit exchanges for active employees, for $203.2 million in cash and assumed equity awards valued at $8.0 million. See Note 12 for further information on the assumed stock options. The Liazon business became a new line of business, which complements our existing OneExchange offerings under the Exchange Solutions segment. Together these solutions help organizations, both large and small, deliver self- and fully-insured benefits to both employees as well as pre- and post-65 retirees. We included the results of Liazon's operations since the acquisition date in the Exchange Solutions segment and in our condensed consolidated financial statements.
	During the second and third quarters of fiscal 2014, we recorded the tangible assets received, liabilities assumed, and the preliminary fair value of intangibles. The intangibles included developed technology, valued at $34.3 million, and other intangibles that were collectively immaterial. Our estimate of fair value for the technology intangible was developed using the multi-period excess earnings method valuation model. Significant assumptions used in the valuation were estimated revenues and expenses, contributory asset charges, required rates of return, and discount rates. Based on the fair value of these intangibles, we also recorded a net deferred tax liability of $0.7 million. It was determined that total consideration was $211.2 million, and we recorded $174.0 million of goodwill related to the acquisition of Liazon.
	Divestitures
	Sale of our Brokerage business.
	On September 19, 2013, we entered into a definitive agreement to sell our Reinsurance and Property and Casualty Insurance Brokerage (“Brokerage”) business to Jardine Lloyd Thompson Group plc (“JLT”) for cash consideration of $250 million. The Brokerage business was a component of our Risk and Financial Services segment. The sale closed during our second quarter of fiscal year 2014. We divested this business as part of our strategy to focus on the businesses where we are market leaders. We continue to focus on risk consulting, software and other services for the insurance industry. The business will be branded for a transitional period of 15 months from the closing date as JLT Towers Re.
	As part of the transaction, we entered into an Alliance Agreement with JLT that will ensure clients have continued access to our risk consulting and software services. This agreement will also provide JLT Towers Re with continued use of Towers Watson’s proprietary actuarial models and software.
	The Company assessed the guidance under ASC 205 to determine if the Alliance Agreement or any other terms of the sale agreement constituted significant continuing direct cash flows or significant continuing involvement with the Brokerage business after the sale. The Company compared the cash flows expected to be recognized from the Brokerage business as a result of the continuation or migration of activities after the disposal transaction to the projected generation of cash flows by the Brokerage business that we could have expected absent the disposal transaction. Based on this analysis, the expected annual cash inflows or outflows related to the portion of revenues shared or commissions received or paid and software sales under the Alliance Agreement are each expected to represent approximately 1% or less of the annual revenues generated by our Brokerage business operations prior to the disposal. This was deemed not significant.
	The Company also calculated the expected cash flows associated with the placement of its insurance and reinsurance arrangements. The Company agreed to use JLT as its broker-of-record for all insurance and reinsurance transactions to which the Company’s wholly-owned captive insurance company, Stone Mountain Insurance Company, is a party for the next five years. These amounts were previously eliminated as intercompany transactions, and are $2.8 million for fiscal year 2014. Additionally, the Company agreed to a Transitional Services Agreement with JLT for a two-year period ending November 5, 2015. The Company expects to incur approximately $6.3 million each year in occupancy or other infrastructure costs, which were prepaid as part of deal consideration or will be repaid by JLT over the next two years. The cash flows associated with these arrangements represent approximately 7.4% of the annual expenses generated by our Brokerage operations prior to the disposal, which was deemed not significant.
	The Company noted that none of the aforementioned agreements or arrangements constituted significant continuing involvement because they do not afford the Company the ability to influence the financial or operating decisions of JLT. Accordingly, we concluded that the continuing cash flows expected after the sale of our Brokerage business do not preclude discontinued operations presentation, and the Company has therefore reclassified the results of our Brokerage business’s operations as discontinued operations for all periods presented in our condensed consolidated statements of operations. The following selected financial information relates to the Brokerage business’s operations for the three and nine months ended March 31, 2014 and 2013, respectively:
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014			2013		2014			2013
	Revenue from discontinued operations	$	—		$	47,990	$	63,762		$	124,227
	(Loss)/income from discontinued operations before taxes	(1,037		)	18,321		23,361			32,016
	Tax expense on discontinued operations	188			6,621		8,989			11,158
	Net (loss)/income from discontinued operations	(1,225		)	11,700		14,372			20,858
	Gain from sale of discontinued operations	5,151			—		23,631			—
	Tax (credit)/expense on gain from sale of discontinued operations	(13		)	—		32,023			—
	Net income/(loss) from sale of discontinued operations	5,164			—		(8,392		)	—
	Total net income from discontinued operations	$	3,939		$	11,700	$	5,980		$	20,858
	Only the fiduciary assets and liabilities associated with the European businesses were sold. North American fiduciary assets and liabilities have not been disposed of due to certain legal restrictions which do not permit the transfer of these assets and liabilities.
	In addition to the stated $250 million cash consideration stipulated in the sale agreement, a preliminary purchase price adjustment of $28.7 million was paid to the Company by JLT representing the preliminary value of net assets transferred in the sale. The completion accounts and this purchase price adjustment were finalized during the Company’s third fiscal quarter and an additional $2.7 million is expected to be received during the fourth fiscal quarter.
	As part of the sale, the Company agreed to repay JLT for retention payments made to certain employees of Brokerage if they remain with the business on the 30-day anniversary of the sale and the first and second anniversary of the sale. The value ascribed to this portion of the obligation is $21.7 million at the time of the sale. The remaining liability at March 31, 2014 is carried at fair value on the accompanying consolidated balance sheets (see Note 5 – Fair Value Measurements). The total amount has been classified as current or non-current liabilities based on the expected payment dates.
	The obligation for retention payments and certain other negotiated terms reduced total consideration received at close to $215.1 million. Total transaction and integration costs were approximately $6.4 million. We finalized the completion accounts and the purchase price adjustments during the third quarter of fiscal 2014. Our final pre-tax gain on the sale is $23.6 million. The sale of our Brokerage business resulted in a significant taxable gain since the disposal of the goodwill and intangible assets associated with the business is not deductible for tax.

Investments

Investments	9 Months Ended
	Mar. 31, 2014
Investment [Abstract]	'
Investments	'
	Investments.
	We hold available-for-sale investments comprised of fixed income securities, equity securities and mutual funds / exchange-traded funds. We also hold held-to-maturity investments comprised of fixed income securities. See Note 5 – Fair Value Measurements for the investments by type of security. The fixed income securities all mature within twelve months of the balance sheet date and are classified as short-term investments on the condensed consolidated balance sheet. We held no material trading securities as of March 31, 2014 and June 30, 2013.
	Additional information on available-for-sale security balances is provided in the following table as of March 31, 2014 and June 30, 2013:
		As of March 31, 2014									As of June 30, 2013
		Amortized		Unrealized		Unrealized			Estimated		Amortized		Unrealized		Unrealized			Estimated
		Cost		Gains		Losses			Fair Value		Cost		Gains		Losses			Fair Value
	Fixed income securities (a)	$	14,992	$	2	$	—		$	14,994	$	56,602	$	15	$	(2	)	$	56,615
	Equity securities (a)	114		16		(3		)	127		853		476		(1		)	1,328
	Mutual funds and exchange-traded funds (b)	47,912		1,641		—			49,553		26,666		14		(97		)	26,583
	(a)	As of March 31, 2014, all fixed income securities are classified as held-to-maturity and are reflected as short-term investments on the condensed consolidated balance sheet. As of June 30, 2013, all fixed income securities are classified as available-for-sale and are reflected as short-term investments on the condensed consolidated balance sheet. Certain liquid short-term investments, such as term deposits and certificates of deposits, are classified as short-term investments on the balance sheet but are not available-for-sale or held-to-maturity investments and therefore, are not included in the table above.
	(b)	Reflected as short-term investments or other assets on the condensed consolidated balance sheet as of March 31, 2014 and June 30, 2013.
	For all investments, other than fixed income securities, amortized cost represents the cost basis of the investment as of the purchase or Merger date. Proceeds from sales and maturities of investments of available-for-sale securities during the nine months ended March 31, 2014 were $59.3 million, resulting in realized gains of $0.8 million that is reflected as income from discontinued operations on the condensed consolidated statement of operations. For the nine months ended March 31, 2014, $1.6 million of these proceeds related to the sale of investments as part of the divestiture of our Brokerage business. Proceeds from sales and maturities of investments of available-for-sale securities during the nine months ended March 31, 2013 were $34.7 million, resulting in no realized gains/losses. There were no proceeds from sales and maturities of held-to-maturity securities during the nine months ended March 31, 2014 and March 31, 2013.
	There were no material investments that have been in a continuous loss position for more than six months, and there have been no other-than-temporary impairments recognized. There were no material investments with unrealized losses as of March 31, 2014. The aggregate fair value of investments with unrealized losses as of June 30, 2013 was $36.3 million.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	9 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	Goodwill and Intangible Assets.
	The components of goodwill and intangible assets are outlined below for the nine months ended March 31, 2014:
		Benefits			Risk and			Talent and			Exchange			All Other			Total
					Financial			Rewards			Solutions
					Services
	Balance as of June 30, 2013	$	1,233,272		$	534,150		$	108,850		$	341,449		$	1,214		$	2,218,935
	Goodwill related to acquisitions	—			—			—			173,968			—			173,968
	Goodwill related to disposals	—			(167,822		)	—			—			—			(167,822		)
	Translation adjustment	38,260			17,647			3,109			—			—			59,016
	Balance as of March 31, 2014	$	1,271,532		$	383,975		$	111,959		$	515,417		$	1,214		$	2,284,097
	Included in the Risk and Financial Services activity is a $167.8 million reduction in goodwill related to the disposal of our Brokerage business, which was completed on November 6, 2013. See Note 2 for additional information regarding the sale of this business.
	Included in the Exchange Solutions goodwill acquired is $174.0 million of goodwill related to the acquisition of Liazon, which closed on November 22, 2013. We recorded the consideration less the tangible assets and liabilities as goodwill as of March 31, 2014. See Note 2 for additional information regarding this acquisition.
	The following table reflects changes in the net carrying amount of the components of finite-lived intangible assets for the nine months ended March 31, 2014:
		Customer			Core/			Favorable			Trademarks & trade names			Total
		related			developed			lease
		intangible			technology			agreements
	Balance as of June 30, 2013	$	246,247		$	69,515		$	3,565		$	—		$	319,327
	Intangibles acquired	600			34,300			—			150			35,050
	Intangibles related to disposal	(8,254		)	—			—			—			(8,254		)
	Amortization	(35,106		)	(22,146		)	(710		)	(150		)	(58,112		)
	Translation adjustment	5,187			715			(16		)	—			5,886
	Balance as of March 31, 2014	$	208,674		$	82,384		$	2,839		$	—		$	293,897
	For the three and nine months ended March 31, 2014, we recorded $19.4 million and $57.4 million, respectively, of amortization related to our intangible assets, exclusive of favorable lease agreements. For the three and nine months ended March 31, 2013, we recorded $19.4 million and $59.3 million, respectively, of amortization related to our intangible assets. These amounts include amortization that has been classified within income from discontinued operations on the accompanying condensed consolidated statements of operations.
	Included in the change in customer related intangible assets is the reduction of $8.3 million associated with the sale of our Brokerage business, which closed on November 6, 2013.
	As part of the integration of our Retirement business, during the second quarter of fiscal 2012, management decided to discontinue the use of an application that was acquired in the Merger with an expected useful life of ten years. We calculated no impairment associated with this application and we shortened the life of the intangible asset and accelerated the amortization in the same pattern in which our clients are transitioned to the surviving application, which is expected to occur predominantly over the next two to three years. To develop our estimated useful remaining life of the application, we are using client engagement revenue and the planned transition developed by our business management. For the three and nine months ended March 31, 2014, we recorded $0.4 million and $1.7 million, respectively, of additional amortization expense and $3.8 million and $6.3 million of additional amortization expense for the three and nine months ended March 31, 2013, respectively.
	Our indefinite-lived non-amortizable intangible assets consist of acquired trade names. The carrying value of these assets were $377.3 million and $368.4 million as of March 31, 2014 and June 30, 2013, respectively. The change during the period was due to foreign currency translation.
	Our acquired unfavorable lease liabilities were $11.0 million and $13.5 million as of March 31, 2014 and June 30, 2013, respectively, and are recorded in the other noncurrent liabilities in the condensed consolidated balance sheet. The change for the nine months ended March 31, 2014 was comprised of a reduction to rent expense of $2.5 million.
	The following table reflects the carrying value of finite-lived intangible assets and liabilities as of March 31, 2014 and June 30, 2013:
		As of March 31, 2014						As of June 30, 2013
		Gross			Accumulated			Gross			Accumulated
		Carrying			Amortization			Carrying			Amortization
		Amount						Amount
	Finite-lived intangible assets and liabilities:
	Trade name	$	520		$	520		$	370		$	370
	Customer related intangibles	387,223			178,549			390,027			143,780
	Core/developed technology	175,566			93,182			164,762			95,247
	Favorable lease agreements	6,453			3,614			6,496			2,931
	Total finite-lived intangible assets	$	569,762		$	275,865		$	561,655		$	242,328
	Unfavorable lease agreements	25,982			14,947			25,591			12,122
	Total finite-lived intangible liabilities	$	25,982		$	14,947		$	25,591		$	12,122
	Certain trademark and trade-name intangible assets have indefinite useful lives and are not amortized. The weighted average remaining life of amortizable intangible assets and liabilities at March 31, 2014 was 5.3 years.
	The following table reflects:
	1) future estimated amortization expense for amortizable intangible assets consisting of customer related intangibles and core/developed technology, and
	2) the rent offset resulting from the amortization of the net lease intangible assets and liabilities for the remainder of fiscal 2014 and for subsequent fiscal years:
	Fiscal year ending June 30,	Amortization			Rent (Offset)
					Expense
	2014	$	17,937		$	(575	)
	2015	67,783			(2,027		)
	2016	57,714			(1,567		)
	2017	53,379			(1,864		)
	2018	42,967			(1,981		)
	Thereafter	51,278			(182		)
	Total	$	291,058		$	(8,196	)

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements.
	We have categorized our financial instruments into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities (Level 1) and lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety.
	Financial assets and liabilities recorded in the accompanying condensed consolidated balance sheets are categorized based on the inputs in the valuation techniques as follows:
	Level 1 — Financial assets and liabilities whose values are based on quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.
	Level 2 — Financial assets and liabilities whose values are based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.
	Level 3 — Financial assets and liabilities whose values are based on unobservable inputs for the asset or liability.
	The following presents our assets and liabilities measured at fair value on a recurring basis as of March 31, 2014 and June 30, 2013:
		Fair Value Measurements on a Recurring Basis at
		31-Mar-14
		Level 1		Level 2		Level 3		Total
	Assets:
	Available-for-sale securities:
	Corporate bonds (a)	$	—	$	14,994	$	—	$	14,994
	Equity securities (a)	127		—		—		127
	Mutual funds / exchange traded funds (b)	49,553		—		—		49,553
	Derivatives:
	Foreign exchange forwards (c)	—		417		—		417
	Liabilities:
	Derivatives:
	Foreign exchange forwards (c)	$	—	$	1,183	$	—	$	1,183
	Contingent Liabilities:
	Retention bonus liability (d)	—		—		19,807		19,807
		Fair Value Measurements on a Recurring Basis at
		30-Jun-13
		Level 1		Level 2		Level 3		Total
	Assets:
	Available-for-sale securities:
	U.S. treasury securities and obligations of the U.S government, government agencies and authorities (a)	$	2,014	$	—	$	—	$	2,014
	U.S. Corporate bonds (a)	—		53,100		—		53,100
	Foreign corporate bonds (a)	—		1,501		—		1,501
	Equity securities (a)	1,328		—		—		1,328
	Mutual funds / exchange-traded funds (b)	26,583		—		—		26,583
	Derivatives:
	Foreign exchange forwards (c)	—		546		—		546
	Liabilities:
	Derivatives:
	Foreign exchange forwards (c)	$	—	$	353	$	—	$	353
	_________________________
	(a)	These assets are included in short-term investments on the condensed consolidated balance sheet.
	(b)	These assets are included in short-term investments or other assets on the condensed consolidated balance sheet.
	(c)	These derivative investments are included in other current assets or accounts payable, accrued liabilities and deferred income on the condensed consolidated balance sheet. See Note 6 for further information on our derivative investments.
	(d)	These liabilities are included in other current liabilities and other noncurrent liabilities on the condensed consolidated balance sheet. The fair value was determined using a discounted cash flow model. There have been no material changes in the fair value of this liability subsequent to initial recognition.
	We record gains or losses related to the changes in the fair value of our financial instruments for foreign exchange forward contracts accounted for as foreign currency hedges in general and administrative expenses in the condensed consolidated statements of operations. For the three and nine months ended March 31, 2014, we recorded gains of $0.1 million and $0.1 million, respectively, for instruments still held at March 31, 2014. For the three and nine months ended March 31, 2013, we recorded losses of $1.5 million and $1.5 million for instruments still held at March 31, 2013, respectively. There were no material gains or losses recorded in the condensed consolidated statements of operations for available-for-sale securities still held at March 31, 2014 or 2013.
	To determine the fair value of our derivative positions, we use valuations from the counterparty of each hedge. This is a Level 2 valuation based on observable rates in the market. Counterparties use proprietary models to calculate values and are not actual quotes that could be used to terminate the contracts, but we believe the valuations are very close to the value of each contract if terminated since we review the valuations and compare these valuations against our own calculated fair value. We monitor the counterparty default risk both before the hedge is placed and prospectively throughout the life of the contract and would adjust fair values if asset impairment was deemed significant.
	The U.S. Treasury securities, equity securities, exchange traded funds and mutual funds are valued using quoted market prices as of the end of the trading day. Corporate bonds and certain obligations of government agencies or states, municipalities and political subdivisions are valued based on yields currently available on comparable securities of issuers with similar credit ratings. We monitor the value of the investments for other-than-temporary impairment on a quarterly basis.
	The availability of observable market data is monitored to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. There were no transfers between Levels 1, 2 or 3 during the three and nine months ended March 31, 2014.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments.
	We are exposed to market risk from changes in foreign currency exchange rates. Where possible, we identify exposures in our business that can be offset internally. Where no natural offset is identified, we may choose to enter into various derivative transactions. These instruments have the effect of reducing our exposure to unfavorable changes in foreign currency rates. We do not enter into derivative transactions for trading purposes.
	A number of our foreign subsidiaries receive revenues (through either internal or external billing) in currencies other than their functional currency. As a result, the foreign subsidiary’s functional currency revenue will fluctuate as the currency exchange rates change. To reduce this variability, we use foreign exchange forward contracts to hedge the foreign exchange risk of the forecasted collections. We have designated these derivatives as cash flow hedges of its forecasted foreign currency denominated collections. We also use derivative financial contracts, principally foreign exchange forward contracts, to hedge other non-functional currency obligations. These exposures primarily arise from intercompany lending and other liabilities denominated in foreign currencies. At March 31, 2014, the longest outstanding maturity was 15 months. As of March 31, 2014, a net $0.9 million pretax loss was deferred in accumulated other comprehensive income and is expected to be recognized in general and administrative expenses during the next 12 months when the hedged revenue is recognized.
	As of March 31, 2014 and June 30, 2013, we had cash flow and economic hedges with a notional value of $63.3 million and $107.2 million, respectively, to hedge cash flow and balance sheet exposures. We determine the fair value of our foreign currency derivatives based on quoted prices received from the counterparty for each contract, which we evaluate using pricing models whose inputs are observable. The net fair value of all derivatives held as of March 31, 2014 and June 30, 2013 was a liability of $0.8 million and an asset of $0.2 million, respectively. See Note 5, Fair Value Measurements, for further information regarding the determination of fair value.
	The fair value of our derivative instruments held as of March 31, 2014 and June 30, 2013 and their location in the condensed consolidated balance sheet are as follows:
		Derivative assets										Derivative liabilities
		Balance sheet		Fair value								Balance sheet		Fair value
		location										location
				31-Mar-14				30-Jun-13						31-Mar-14				30-Jun-13
	Derivatives designated as hedging instruments:
	Foreign exchange forwards	Other current assets		$	295			$	395			Accounts payable,		$	(1,181	)		$	(159	)
												accrued liabilities
												and deferred income
	Derivatives not designated as hedging instruments:
	Foreign exchange forwards	Other current assets		122				151				Accounts payable,		(2		)		(194		)
												accrued liabilities
												and deferred income
	Total derivative assets (liabilities)			$	417			$	546					$	(1,183	)		$	(353	)
	The effects of derivative instruments that are designated as hedging instruments on the consolidated statements of operations and the consolidated statements of changes in stockholders’ equity for the three months ended March 31, 2014 and 2013 and for the nine months ended March 31, 2014 and 2013 are as follows:
	Derivatives designated as hedging		Gain recognized in OCI								Location		Loss reclassified								Location of loss recognized in income	Loss recognized
	instruments for the three months ended		(effective portion)								of loss reclassified		from OCI into income								(ineffective portion and	in income (ineffective
	March 31, 2014 and 2013:										from OCI into income		(effective portion)								amount excluded from	portion and
											(effective portion)										effectiveness testing)	amount excluded from
																						effectiveness testing)
			2014				2013						2014				2013					2014			2013
	Foreign exchange Forwards		$	85			$	556			General and		$	(520	)		$	(386	)		General and	$	(4	)	$	(1	)
											administrative										administrative
											expenses										expenses
	Total		$	85			$	556					$	(520	)		$	(386	)			$	(4	)	$	(1	)
	Derivatives designated as hedging		Loss								Location		Loss reclassified								Location of loss	Loss recognized
	instruments for the nine months ended		recognized in OCI								of loss reclassified		from OCI into income								recognized in income	in income (ineffective
	March 31, 2014 and 2013:		(effective portion)								from OCI into income		(effective portion)								(ineffective portion and	portion and
											(effective portion)										amount excluded from	amount excluded from
																					effectiveness testing)	effectiveness testing)
			2014				2013						2014				2013					2014			2013
	Foreign exchange forwards		$	(1,978	)		$	(503	)		General and		$	852			$	(121	)		General and	$	(1	)	$	(1	)
											administrative										administrative
											expenses										expenses
	Total		$	(1,978	)		$	(503	)				$	852			$	(121	)			$	(1	)	$	(1	)
	Included in the notional values above are $25.8 million and $33.6 million as of March 31, 2014 and June 30, 2013, respectively, of derivatives held as economic hedges primarily to hedge intercompany loans denominated in currencies other than the functional currency. The effects of derivatives that have not been designated as hedging instruments on the condensed consolidated statements of operations for the three and nine months ended March 31, 2014 and 2013 are as follows:
					(Loss) gain recognized in income
					Three Months Ended								Nine Months Ended
					March 31,								March 31,
	Derivatives not designated as hedging instruments:		Location of (loss) gain		2014				2013				2014				2013
			recognized in income
	Foreign exchange forwards		General and administrative expenses		$	(365	)		$	(146	)		$	697			$	1,928
	Total				$	(365	)		$	(146	)		$	697			$	1,928

Retirement_Benefits

Retirement Benefits	9 Months Ended
	Mar. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]	'
Retirement Benefits	'
	Retirement Benefits.
	Defined Benefit Plans
	Towers Watson sponsors both qualified and non-qualified defined benefit pension plans and other post-retirement benefit plans in North America and Europe. As of June 30, 2013, these funded and unfunded plans represented 98 percent of Towers Watson’s pension and other post-retirement benefit obligations and are disclosed herein. Towers Watson also sponsors funded and unfunded defined benefit pension plans in certain other countries as well, representing the remaining two percent of the liability.
	All expenses and contributions presented in this note are inclusive of amounts classified as discontinued operations in the accompanying condensed consolidated statements of operations.
	Components of Net Periodic Benefit Cost for Defined Benefit Pension Plans
	The following tables set forth the components of net periodic benefit cost for the Company’s defined benefit pension plan for North America and Europe for the three and nine months ended March 31, 2014 and 2013:
		Three Months Ended March 31,
		2014						2013
		North			Europe			North			Europe
		America						America
	Service cost	$	17,493		$	3,054		$	17,731		$	3,074
	Interest cost	35,062			10,182			33,854			9,182
	Expected return on plan assets	(46,968		)	(11,457		)	(46,586		)	(10,168		)
	Amortization of net loss	5,473			2,235			11,440			1,441
	Amortization of prior service (credit)/cost	(2,095		)	10			(2,094		)	10
	Net periodic benefit cost	$	8,965		$	4,024		$	14,345		$	3,539
		Nine Months Ended March 31,
		2014						2013
		North			Europe			North			Europe
		America						America
	Service cost	$	52,819		$	9,162		$	53,189		$	9,221
	Interest cost	105,628			30,545			101,566			27,545
	Expected return on plan assets	(141,375		)	(34,370		)	(139,540		)	(30,505		)
	Amortization of net loss	16,597			6,706			34,325			4,324
	Amortization of prior service (credit)/cost	(6,284		)	31			(6,283		)	29
	Net periodic benefit cost	$	27,385		$	12,074		$	43,257		$	10,614
	The decrease in our North American pension expense was due to a decrease in the amortization of actuarial losses. This decrease was driven primarily by an increase in the discount rate from fiscal year 2013 to fiscal year 2014. Additionally, favorable investment returns during fiscal year 2013 combined with the recognition of the majority of our previously deferred actuarial losses during fiscal year 2013 have resulted in reduced actuarial losses being recognized in fiscal year 2014.
	Components of Net Periodic Benefit Cost for Other Postretirement Plans
	The following table sets forth the components of net periodic benefit cost for the Company’s post-retirement plans for the three and nine months ended March 31, 2014 and 2013:
		Three Months Ended						Nine Months Ended
		March 31,						March 31,
		2014			2013			2014			2013
	Service cost	$	365		$	441		$	1,097		$	1,323
	Interest cost	2,216			2,197			6,647			6,590
	Expected return on plan assets	(28		)	(33		)	(84		)	(98		)
	Amortization of net (gain) loss	(436		)	83			(1,309		)	250
	Amortization of prior service credit	(1,751		)	(2,051		)	(5,253		)	(6,152		)
	Net periodic benefit cost	$	366		$	637		$	1,098		$	1,913
	Employer Contributions to Defined Benefit Pension Plans
	The Company made $67.0 million in contributions to the North American plans during the first nine months of fiscal year 2014 and anticipates making $5.9 million in contributions over the remainder of the fiscal year. The Company made $24.6 million in contributions to European plans during the first nine months of fiscal year 2014 and anticipates making $13.8 million in contributions over the remainder of the fiscal year. Of the amount contributed for the European plans, $10.1 million was a contribution to the German pension plan which was previously unfunded. The Company expects to fund the German plan obligation over the next 10 years.
	Defined Contribution Plans
	The cost of the Company’s contributions to the various U.S. defined contribution plans for the three months ended March 31, 2014 and 2013 amounted to $9.9 million and $9.3 million, respectively. The cost of the Company’s contributions to the plans for the nine months ended March 31, 2014 and 2013 amounted to $22.3 million and $22.3 million, respectively.
	The cost of the Company’s contributions to the various U.K. defined contribution plans for the three months ended March 31, 2014 and 2013 amounted to $5.2 million and $5.6 million, respectively. The cost of the Company’s contributions to the plans for the nine months ended March 31, 2014 and 2013 amounted to $15.1 million and $16.8 million, respectively.

Debt_Commitments_and_Contingen

Debt, Commitments and Contingent Liabilities	9 Months Ended
	Mar. 31, 2014
Debt Commitments And Contingent Liabilities [Abstract]	'
Debt, Commitments And Contingent Liabilities	'
	Debt, Commitments and Contingent Liabilities.
	The debt, commitments and contingencies described below are currently in effect and would require Towers Watson, or domestic subsidiaries, to make payments to third parties under certain circumstances. In addition to commitments and contingencies specifically described below, Towers Watson has historically provided guarantees on an infrequent basis to third parties in the ordinary course of business.
	Towers Watson Senior Credit Facility
	On November 7, 2011, Towers Watson and certain subsidiaries entered into a five-year, $500 million revolving credit facility, which amount may be increased by an aggregate amount of $250 million, subject to the satisfaction of customary terms and conditions, with a syndicate of banks (the “Senior Credit Facility”). Borrowings under the Senior Credit Facility bear interest at a spread to either LIBOR or the Prime Rate. During the nine months ended March 31, 2014 and 2013, the weighted-average interest rate on borrowings under the Senior Credit Facility was 1.93% and 1.49%, respectively. We are charged a quarterly commitment fee, currently 0.175% of the Senior Credit Facility, which varies with our financial leverage and is paid on the unused portion of the Senior Credit Facility. Obligations under the Senior Credit Facility are guaranteed by Towers Watson and all of its domestic subsidiaries (other than Professional Consultants Insurance Company (“PCIC”), a majority-owned captive insurance company, and Stone Mountain Insurance Company (“SMIC”), a wholly-owned captive insurance company).
	The Senior Credit Facility contains customary representations and warranties and affirmative and negative covenants. The Senior Credit Facility requires Towers Watson to maintain certain financial covenants that include a minimum Consolidated Interest Coverage Ratio and a maximum Consolidated Leverage Ratio (which terms in each case are defined in the Senior Credit Facility). In addition, the Senior Credit Facility contains restrictions on the ability of Towers Watson to, among other things, incur additional indebtedness; pay dividends; make distributions; create liens on assets; make acquisitions; dispose of property; engage in sale-leaseback transactions; engage in mergers or consolidations, liquidations and dissolutions; engage in certain transactions with affiliates; and make changes in lines of businesses. As of March 31, 2014, we were in compliance with our covenants.
	As of March 31, 2014, Towers Watson had no borrowings outstanding under the Senior Credit Facility.
	Letters of Credit under the Senior Credit Facility
	As of March 31, 2014, Towers Watson had standby letters of credit totaling $21.4 million associated with our captive insurance companies in the event that we fail to meet our financial obligations. Additionally, Towers Watson had $1.4 million of standby letters of credit covering various other existing or potential business obligations. The aforementioned letters of credit are issued under the Senior Credit Facility, and therefore reduce the amount that can be borrowed under the Senior Credit Facility by the outstanding amount of these standby letters of credit.
	Term Loan Agreement Due June 2017
	On June 1, 2012, the Company entered into a five-year $250 million amortizing term loan facility (“the Term Loan”) with a consortium of banks. The interest rate on the term loan is based on the Company’s choice of one, three or six month LIBOR plus a spread of 1.25% to 1.75%, or alternatively the bank base rate plus 0.25% to 0.75%. The spread to each index is dependent on the Company’s consolidated leverage ratio. The weighted-average interest rate on the Term Loan during the nine months ended March 31, 2014 and 2013 was 1.42% and 1.47%, respectively. The Term Loan amortizes at a rate of $6.25 million per quarter, beginning in September 2013, with a final maturity date of June 1, 2017 . The Company has the right to prepay a portion or all of the outstanding Term Loan balance on any interest payment date without penalty. At March 31, 2014, the balance on the Term Loan was $231.3 million.
	This agreement contains substantially the same terms and conditions as our Senior Credit Facility, including guarantees from all of the domestic subsidiaries of Towers Watson (other than PCIC and SMIC). The Company entered into the Term Loan as part of the financing of our acquisition of Extend Health on May 29, 2012.
	Indemnification Agreements
	Towers Watson has various agreements which provide that it may be obligated to indemnify the other party to the agreement with respect to certain matters. Generally, these indemnification provisions are included in contracts arising in the normal course of business and in connection with the purchase and sale of certain businesses. Although it is not possible to predict the maximum potential amount of future payments that may become due under these indemnification agreements because of the conditional nature of Towers Watson’s obligations and the unique facts of each particular agreement, Towers Watson does not believe any potential liability that might arise from such indemnity provisions is probable or material. There are no provisions for recourse to third parties, nor are any assets held by any third parties that any guarantor can liquidate to recover amounts paid under such indemnities.
	Legal Proceedings
	From time to time, Towers Watson and its subsidiaries, including Watson Wyatt and Towers Perrin, are parties to various lawsuits, arbitrations or mediations that arise in the ordinary course of business. The matters reported on below are the material pending claims against Towers Watson and its subsidiaries. We do not expect the impact of claims not described below to be material to Towers Watson’s financial statements. We also receive subpoenas in the ordinary course of business and, from time-to-time, receive requests for information in connection with governmental investigations.
	Towers Watson carries substantial professional liability insurance which, effective July 1, 2010, has been provided by SMIC. For the policy period beginning July 1, 2011 certain changes were made to our professional liability insurance program. These changes remain in-force for the policy periods beginning July 1, 2011 and ending July 1, 2014. Our professional liability insurance includes a $10 million aggregate self-insured retention above the $1 million self-insured retention per claim, including the cost of defending such claims. SMIC provides us with $40 million of coverage per claim and in the aggregate, above the retentions, including the cost of defending such claims. SMIC secured $25 million of reinsurance from unaffiliated reinsurance companies in excess of the $15 million SMIC retained layer. Excess insurance attaching above the SMIC coverage is provided by various unaffiliated commercial insurance companies.
	This structure effectively results in Towers Watson and SMIC bearing the first $25 million of loss per occurrence or in the aggregate above the $1 million per claim self-insured retention. As a wholly-owned captive insurance company, SMIC is consolidated into our financial statements.
	Before the Merger, Watson Wyatt and Towers Perrin each obtained substantial professional liability insurance from PCIC. A limit of $50 million per claim and in the aggregate was provided by PCIC subject to a $1 million per claim self-insured retention. PCIC secured reinsurance of $25 million attaching above the $25 million PCIC retained layer from unaffiliated reinsurance companies. Our ownership interest in PCIC is 72.86%. As a consequence, PCIC’s results are consolidated in Towers Watson’s operating results. PCIC ceased issuing insurance policies effective July 1, 2010 and at that time entered into a run-off mode of operation. Our shareholder agreements with PCIC could require additional payments to PCIC if development of claims significantly exceeds prior expectations.
	We provide for the self-insured retention where specific estimated losses and loss expenses for known claims are considered probable and reasonably estimable. Although we maintain professional liability insurance coverage, this insurance does not cover claims made after expiration of our current policies of insurance. Generally accepted accounting principles require that we record a liability for incurred but not reported (“IBNR”) professional liability claims if they are probable and reasonably estimable, and for which we have not yet contracted for insurance coverage. We use actuarial assumptions to estimate and record our IBNR liability. As of March 31, 2014, we had a $182.3 million IBNR liability balance, net of recoverable receivables of our captive insurance companies. This net liability was $184.1 million as of June 30, 2013. To the extent our captive insurance companies, PCIC and SMIC, expect losses to be covered by a third party, they record a receivable for the amount expected to be recovered. This receivable is classified in other current or other noncurrent assets in our condensed consolidated balance sheet.
	We reserve for contingent liabilities based on ASC 450, Contingencies, when it is determined that a liability, inclusive of defense costs, is probable and reasonably estimable. The contingent liabilities recorded are primarily developed actuarially. Litigation is subject to many factors which are difficult to predict so there can be no assurance that in the event of a material unfavorable result in one or more claims, we will not incur material costs.
	Former Towers Perrin shareholder litigation
	A putative class action lawsuit filed by certain former shareholders of Towers Perrin (the "Dugan Action") previously was reported in Amendment No. 3 to the Registration Statement on Form S-4/A (File No. 333-161705) filed on November 9, 2009 by the Jupiter Saturn Holding Company (the “Registration Statement”). As reported in the Registration Statement, the complaint was filed on November 5, 2009 against Towers Perrin, members of its board of directors, and certain members of senior management in the United States District Court for the Eastern District of Pennsylvania.
	The named Plaintiffs in this action were former members of Towers Perrin’s senior management, who left Towers Perrin at various times between 1995 and 2000. The Dugan plaintiffs sought to represent a class of former Towers Perrin shareholders who separated from service on or after January 1, 1971, but prior to certain changes in Towers Perrin's capital structure that occurred in January 2005, and who also meet certain other specified criteria. The complaint does not contain a quantification of the damages sought.
	On December 9, 2009, Watson Wyatt was informed by Towers Perrin of a settlement demand from the plaintiffs in the Dugan Action. Although the complaint in the Dugan Action did not contain a quantification of the damages sought, plaintiffs’ settlement demand, which was orally communicated to Towers Perrin on December 8, 2009 and in writing on December 9, 2009, sought a payment of $800 million to settle the action on behalf of the proposed class. Plaintiffs requested that Towers Perrin communicate the settlement demand to Watson Wyatt.
	On December 17, 2009 , four other former Towers Perrin shareholders, all of whom voluntarily left Towers Perrin in May or June 2005 and all of whom were excluded from the proposed class in the Dugan Action, commenced a separate legal proceeding (the "Allen Action") in the United States District Court for the Eastern District of Pennsylvania alleging the same claims in substantially the same form as those alleged in the Dugan Action. A fifth plaintiff joined this action on August 29, 2011. These plaintiffs were proceeding in their individual capacities and did not seek to represent a proposed class.
	On January 15, 2010 , another former Towers Perrin shareholder who separated from service with Towers Perrin in March 2005 when Towers Perrin and EDS launched a joint venture that led to the creation of a corporate entity known as ExcellerateHRO (“eHRO”), commenced a separate legal proceeding (the "Pao Action") in the United States District Court of the Eastern District of Pennsylvania alleging the same claims in substantially the same form as those alleged in the Dugan Action. Towers Perrin contributed its Towers Perrin Administrative Solutions (“TPAS”) business to eHRO and formerly was a minority shareholder (15)% of eHRO. Pao sought to represent a class of former Towers Perrin shareholders who separated from service in connection with Towers Perrin’s contribution to eHRO of its TPAS business and who were excluded from the proposed class in the Dugan Action. Towers Watson was also named as a defendant in the Pao Action. On January 20, 2010, the court consolidated the three actions for all purposes under the Dugan Action file number.
	Pursuant to the Towers Perrin Bylaws in effect at the time of their separations, the Towers Perrin shares held by all plaintiffs were redeemed by Towers Perrin at book value when these individuals separated from employment. The complaints alleged variously that there was a promise that Towers Perrin would remain privately owned in perpetuity and an implied or actual promise that in the event of a change to public ownership plaintiffs would receive compensation. Plaintiffs alleged that by agreeing to sell their shares back to Towers Perrin at book value upon separation, they and other members of the putative classes relied upon these alleged promises, which they claim were breached as a result of the consummation of the Merger between Watson Wyatt and Towers Perrin. The complaints all asserted claims for breach of contract, breach of express trust, breach of fiduciary duty, promissory estoppel, quasi-contract/unjust enrichment, and constructive trust, and seek equitable relief including an accounting, disgorgement, rescission and/or restitution, and the imposition of a constructive trust.
	On February 22, 2010, defendants filed a motion to dismiss the complaints in their entireties. By order dated September 30, 2010, the court granted the motion to dismiss plaintiffs’ claim for a constructive trust and denied the motion with respect to all other claims alleged. Pursuant to the court’s September 30, 2010 order, defendants also filed answers to plaintiffs’ complaints on October 22, 2010. Discovery in the case was bifurcated, with fact discovery to proceed before expert witness and damages discovery. Neither the plaintiffs in the Dugan Action nor the plaintiff in Pao Action moved for class certification. Defendants filed a motion for summary judgment on all claims in all actions on December 23, 2011. The court heard argument on June 19, 2012, and on December 11, 2012 granted defendants’ motion, and entered judgment in favor of defendants on all claims. On January 10, 2013, plaintiffs filed a joint notice of their intent to appeal the court’s judgment to the U.S. Court of Appeals for the Third Circuit. On February 13, 2013, the parties were notified that the appeal had been assigned for mediation pursuant to the Third Circuit’s mediation program. During the mediation session held on May 7, 2013, the parties reached agreement on settlement terms that include payment of an aggregate $10 million to an agreed settlement class (including all persons in the classes as defined in the respective complaints in the Dugan Action and the Pao Action, plus additional former Towers Perrin shareholders who separated from Towers Perrin between January 1971 and June 2005) estimated to potentially include more than 1,000 former Towers Perrin shareholders, which payment would also cover legal fees of plaintiffs’ attorneys, as determined by the court, and expenses incurred to administer the settlement.
	The cases were then returned to the district court for consideration of the proposed settlement. On September 24, 2013, the court preliminarily certified the settlement class and preliminarily approved the parties’ proposed settlement.
	At a hearing on February 12, 2014, the court gave its final approval to the settlement. The final order and judgment approving the settlement and dismissing the Dugan, Allen and Pao Actions with prejudice was entered on February 18, 2014. No appeal was taken from that final order and judgment during the applicable appeal period, and the resolution and dismissal of the cases as against all defendants is now final.
	Acument Global Technologies, Inc.
	In a letter to the Company dated January 26, 2011, Acument Global Technologies, Inc. (“Acument”) and the Acument Global Technologies, Inc. Pension Plan (the “Plan”) claimed that Towers Watson breached its fiduciary duties under the Employee Retirement Income Security Act of 1974 (“ERISA”) in connection with advice provided to Acument relating to investment of certain assets of the Plan in the Westridge Capital Management Enhancements Funds (the “Westridge Funds”). Acument and the Plan demanded that the Company make the Plan whole for losses and damages allegedly sustained as a result of Acument’s decision to invest in the Westridge Funds. Watson Wyatt Investment Consulting, Inc. (“WWIC”), now known as Towers Watson Investment Services, Inc. (“TWIS”), provided investment consulting services to Acument between December 1, 2007 and April 30, 2010. In connection with those services, WWIC recommended an investment in the Westridge Funds. In July 2008, Acument made a $47.0 million investment in the Westridge Funds. During the period December 1, 2008 through January 22, 2009, Acument made additional investments of $9.5 million, bringing the aggregate investment of the Plan’s assets in the Westridge Funds to $56.5 million.
	As the result of information obtained during an investigation of Westridge Capital Management, its affiliates WG Trading Investors, L.P. and WG Trading Company, L.P. (collectively referred to as “Westridge”) and their principals, commenced by the National Futures Association on February 5, 2009, the Commodities Future Trading Commission filed suit against Westridge and its principals alleging violations of the Commodity Exchange Act. This resulted in a court-supervised receivership of the assets of Westridge. The Securities and Exchange Commission (“SEC”) filed a separate suit on February 25, 2009 against Westridge and its principals alleging violations of the federal securities laws. In its complaint, the SEC alleges that Westridge had become a fraudulent investment scheme by which its principals purportedly misappropriated approximately $553 million from a number of highly sophisticated institutional investors, including public pension and retirement plans and educational institutions, some of which were investing in Westridge as late as February 6, 2009. We believe that, to date, Acument has recovered approximately $39.7 million of its investment in the Westridge Funds from the receivership. The Company declined Acument’s demand for compensation.
	On January 20, 2012, Acument and the Acument Pension Plan (referred to together as “Acument”) filed suit against the Company and TWIS in the United States District Court for the Southern District of New York. The complaint alleges four counts of breach of fiduciary duty under ERISA, claiming principally alleged deficiencies in the Company’s due diligence relating to Westridge and in the disclosures made to Acument concerning Westridge and the nature of the investment. The Company has filed an answer to the complaint denying all claims and asserting affirmative defenses and plans to continue to defend vigorously against these legal proceedings. A mediation took place on September 5, 2012. On January 16, 2014, the Company and TWIS filed an amended answer and counterclaim asserting that Acument Global Technologies, Inc. failed to fulfill its fiduciary duties to the Acument Pension Plan with respect to its investment in the Westridge Funds. On or about February 28, 2014, the Company received Acument’s expert’s damages report, which asserts the range of loss to be between $38.0 million and $86.0 million, which we understand to be comprised primarily of investment losses (including opportunity costs); more specifically, Acument seeks the present-day value of an alternative investment in a “comparable” fund, less what Acument has been returned from the Westridge Receiver. On or about March 27, 2014, the Company submitted a rebuttal expert damages report, which asserts a range of up to $16.6 million. This range assumes a finding of liability and no contribution for the Company’s pending counterclaim. Based on all of the information to date, including the Company’s rebuttal expert damages report, the Company believes there is no reasonably possible material loss in excess of amounts currently accrued. The dispute remains extant.

Variable_Interest_Entities

Variable Interest Entities	9 Months Ended
	Mar. 31, 2014
Variable Interest Entities [Abstract]	'
Variable Interest Entities	'
	Variable Interest Entities.
	Variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity and therefore require a different approach in determining which party involved with the VIE should consolidate the entity. With a VIE, either the entity does not have sufficient equity at risk to finance its activities without additional subordinated financial support from other parties or the entity has equity investors that do not have the ability to make significant decisions relating to the entity’s operations through voting rights. The entity that has a controlling financial interest in a VIE is referred to as the primary beneficiary and is required to consolidate the VIE.
	Through our wholly owned subsidiaries, Towers Watson Investment Management Limited and Towers Watson Investment Management, Ireland, we manage approximately $1.8 billion of assets in investment funds that are considered VIEs and for which our management fee is considered a variable interest. We have determined that these funds qualify for the deferral to certain provisions of ASC Subtopic 810-10, Consolidation – Overall, afforded by ASU 2010-10, Consolidation – Amendments for Certain Investment Funds. In accordance with this deferral, we determine whether we consolidate the fund based on whether we absorb a majority of the fund’s expected losses or receive a majority of the fund’s expected returns.
	During our third fiscal quarter we deconsolidated two previously consolidated funds. Previously, the contracts governing these two funds contained language that restricted the investors' ability to exercise their economic interests in the funds, thereby causing the investors to become related parties of the Company and requiring the Company to combine its own interests with the interests of these investors for purposes of performing the primary beneficiary test. This restrictive language was modified during our third fiscal quarter, which resulted in the investors, other than the Company's defined benefit retirement plans, to no longer be considered related parties, and the Company to no longer be considered the primary beneficiary of the funds. The mark-to-market gains on the investments prior to deconsolidation were $3.0 million and $6.3 million, respectively, for the three and nine months ended March 31, 2014, and are reflected on the accompanying condensed consolidated statements of operations in other non-operating income. The fair value of these investments on the date of deconsolidation, inclusive of the cumulative gains, was $339.0 million, and was removed from the condensed consolidated balance sheets by eliminating the investments of consolidated variable interest entity and by reducing non-controlling interests. The non-controlling interest balance was considered temporary equity as the units held by the investors were redeemable. The changes of the redeemable non-controlling interests balance for the nine months ended March 31, 2014 are as follows:
	Balance as of June 30, 2013	$	—
	Subscriptions of non-controlling interest holders in consolidated VIEs	332,722
	Mark-to-market gains on investments held by consolidated VIEs	6,297
	Deconsolidation of VIEs	(339,019		)
	Balance as of March 31, 2014	$	—
	We are not the primary beneficiary and therefore do not consolidate any of the remaining funds as of March 31, 2014. Our maximum exposure to loss of these unconsolidated VIEs is limited to collection of any unpaid management fees (which are not material) and any potential increase to pension funding obligation due to losses incurred by the funds.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Accumulated Other Comprehensive Income/(Loss)	'
	Accumulated Other Comprehensive Income/(Loss).
	Changes in accumulated other comprehensive income/(loss), net of non-controlling interests, are provided in the following table. The difference between the amounts presented in this table and the amounts presented in the condensed consolidated statements of comprehensive income are the corresponding components attributable to non-controlling interests, which are not material for further disclosure.
		Foreign			Hedge effectiveness (1)									Available-for-sale									Defined pension and
		currency												securities (2)									post-retirement benefit costs (3)
		translation
		-1			Before			Tax			After			Before			Tax			After			Before			Tax			After
					Tax						Tax			Tax						Tax			Tax						Tax
	As of June 30, 2013	$	(131,096	)	$	237		$	(105	)	$	132		$	547		$	(134	)	$	413		$	(233,817	)	$	64,904		$	(168,913	)
	Other comprehensive income/(loss) before reclassifications	88,573			(1,978		)	681			(1,297		)	457			(130		)	327			—			—			—
	Amounts reclassified from accumulated other comprehensive income	—			852			(293		)	559			(761		)	173			(588		)	11,942			(2,605		)	9,337
	Net current-period other comprehensive income/(loss)	88,573			(1,126		)	388			(738		)	(304		)	43			(261		)	11,942			(2,605		)	9,337
	As of March 31, 2014	$	(42,523	)	$	(889	)	$	283		$	(606	)	$	243		$	(91	)	$	152		$	(221,875	)	$	62,299		$	(159,576	)
	-1	Reclassification adjustments from accumulated other comprehensive income are included in general and administrative expenses (see Note 6 – Derivative Financial Instruments for additional details regarding the reclassification adjustments for the hedge settlements)
	-2	Reclassification adjustments from accumulated other comprehensive income are included in income from discontinued operations
	-3	Reclassification adjustments from accumulated other comprehensive income are included in the computation of net periodic pension cost (see Note 7 – Retirement Benefits for additional details)

Restricted_Stock

Restricted Stock	9 Months Ended
	Mar. 31, 2014
Restricted Stock [Abstract]	'
Restricted Stock	'
	Restricted Stock.
	In conjunction with the Merger, shares of Towers Watson common stock issued to Towers Perrin shareholders were divided among four series of non-transferable Towers Watson common stock, Classes B-1, B-2, B-3 and B-4, each with a par value of $0.01 per share. In addition, on January 31, 2011, we completed the acquisition of EMB and issued 113,858 shares of Class B-3 and 113,858 shares of Class B-4 common stock, par value $0.01 per share, to the sellers as consideration. The shares were reduced through our tender offer, our secondary public offering and by the restriction lapsing and conversion to Class A common stock annually on January 1, 2011, 2012 and 2013. The remaining 5,374,070 outstanding shares of Towers Watson Class B-4 common stock converted on a one-for-one basis into freely transferable shares of Towers Watson Class A common stock on January 1, 2014.
	The Towers Perrin restricted stock unit (“RSU”) holders received 10% of the total consideration issued to Towers Perrin shareholders in conjunction with the Merger. The RSUs were converted into 4,248,984 shares of Towers Watson Restricted Class A Common Stock (“Restricted Class A shares”).The service condition was fulfilled from the grant date through each of the three annual periods from January 1, 2010 until December 31, 2012. The restriction lapsed annually on January 1 and the Restricted Class A shares became freely tradable shares of Class A common stock on such dates. The shares were reduced by forfeitures and shares withheld for tax purposes.
	For the three months ended March 31, 2013, we reversed $5.3 million of previously recorded compensation expense based on the actual number of shares forfeited upon the final vesting date of January 1, 2013. Our estimated forfeiture rate was 10% and our actual forfeitures were 11%. For the nine months ended March 31, 2013, we recorded $8.0 million of non-cash share-based compensation expense in connection with the issuance of Towers Watson Restricted Class A common stock to Towers Perrin RSU holders in the Merger. In our results of operations, $1.0 million is classified as discontinued operations for the Brokerage employees’ awards relating to non-cash stock based compensation recorded for the nine months ended March 31, 2013. In our results of operations for the three months ended March 31, 2013 and for the three and nine months ended March 31, 2014, no non-cash stock based compensation expense is classified as discontinued operations since the service period of this award was complete at January 1, 2013.

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share-Based Compensation	'
	Share-Based Compensation.
	Restricted Stock Units
	Executives and Employees
	The Compensation Committee of our Board of Directors approves performance-vested restricted stock unit awards pursuant to the Towers Watson & Co. 2009 Long Term Incentive Plan. RSUs are designed to provide us an opportunity to offer our long-term incentive program (LTIP) and to provide key executives with a long-term stake in our success. RSUs are notional, non-voting units of measurement based on our common stock. Under the RSU agreement, participants become vested in a number of RSUs based on the achievement of specified levels of financial performance during the performance period set forth in the agreement, provided that the participant remains in continuous service with us through the end of the performance period. Any RSUs that become vested are payable in shares of our Class A Common Stock. Dividend equivalents will accrue on RSUs and vest to the same extent as the underlying shares. The form of performance-vested restricted stock unit award agreement includes a provision whereby the Committee could provide for continuation of vesting of restricted stock units upon an employee’s termination under certain circumstances such as a qualified retirement. This definition of qualified retirement is age 55 and with 15 years of experience at the company and a minimum of one year of service in the performance period.
	2014 LTIP. During the first quarter of fiscal year 2014, the Compensation Committee of the Board of Directors approved a grant of 62,651 RSUs to certain of our executive officers. During the third quarter of fiscal year 2014, the Compensation Committee of the Board of Directors approved an additional grant of 2,704 RSUs as a result of new executives being added to the plan. Awards were based on the value of the executive officer’s annual base salary and a multiplier, which is then converted into a target number of RSUs based on our closing stock price as of the date of grant, which was between $105.90 and $110.70. Between 0% and 204% of the target number of RSUs will vest based on the extent to which specified performance metrics are achieved over the three-year performance period from July 1, 2013 to June 30, 2016, subject to the executive officers’ continued employment with us through the end of the performance period, except in the case of a qualified retirement. The Compensation Committee approved the grants and established adjusted three-year average EPS and revenue growth during the performance period as the performance metrics for the awards. For participants that met the requirement for qualified retirement, we record the expense of their awards over the one year service period as performed. We will adjust the stock-based compensation for their awards during the performance period based upon the level of performance achieved. For the three and nine months ended March 31, 2014, we recorded $1.1 million and $3.8 million, respectively, of stock-based compensation related to these grants.
	2013 LTIP. During the first quarter of fiscal year 2013, the Compensation Committee of the Board of Directors approved a grant of 121,075 RSUs to certain of our executive officers. Awards were based on the value of the executive officer’s annual base salary and a multiplier, which is then converted into a target number of RSUs based on our closing stock price as of the date of grant of $54.59. Between 0% and 204% of the target number of RSUs will vest based on the extent to which specified performance metrics are achieved over the three-year performance period from July 1, 2012 to June 30, 2015, subject to the executive officers’ continued employment with us through the end of the performance period, except in the case of a qualified retirement. The Compensation Committee approved the grants and established adjusted three-year average EPS and revenue growth during the performance period as the performance metrics for the awards. For participants that met the requirement for qualified retirement, we record the expense of their awards over the one year service period as performed. We will adjust the stock-based compensation for their awards during the performance period based upon the level of performance achieved. For the three and nine months ended March 31, 2014, we recorded a reduction in expense of $0.4 million and expense of $0.6 million of stock-based compensation related to these grants, respectively. For the three and nine months ended March 31, 2013, we recorded $1.4 million and $4.3 million of stock-based compensation related to these grants, respectively.
	2012 LTIP. During the fiscal year ended June 30, 2012, 86,188 RSUs were granted to certain of our executive officers. Awards are based on the value of the executive officer’s annual base salary and a multiplier, which is then converted into a target number of RSUs based on our closing stock price as of the date of grant which was between $63.73 and $63.94. Between 0% and 204% of the target number of RSUs will vest based on the extent to which specified performance metrics are achieved over the three-year performance period from July 1, 2011 to June 30, 2014, subject to the executive officers’ continued employment with us through the end of the performance period, except in the case of a qualified retirement. The Compensation Committee approved the grants and established adjusted EBITDA margin and revenue growth during the performance period as the performance metrics for the awards. For participants that met the requirement for qualified retirement, we record the expense of their awards over the one year service period as performed. We will adjust the stock-based compensation for their awards during the performance period based upon the level of performance achieved. For the three and nine months ended March 31, 2014, we recorded reductions to expense of $0.5 million and $1.0 million, respectively, of stock-based compensation related to these grants as we adjusted the cumulative expense recorded in the third quarter of fiscal year 2014 according to the performance metric. For the three and nine months ended March 31, 2013, we recorded $0.3 million and $1.8 million, respectively, of stock-based compensation related to these grants.
	2014 ES LTIP. In August 2013, the Compensation Committee of the Board of Directors awarded 30,192 RSUs under the 2009 Plan to select executives of our Exchange Solutions segment with a grant date fair value of $81.73, based on our closing stock price. Between 0% and 204% of the target number of RSUs will vest based on the extent to which specified performance metrics are achieved over the two-year performance period from July 1, 2013 to June 30, 2015, subject to continued employment with us through the end of the performance period. The Compensation Committee approved the grants and established EBITDA margin and revenue growth during the performance period as the performance metrics for the awards. For the three and nine months ended March 31, 2014, we recorded $0.4 million and $1.1 million, respectively, of non-cash stock based compensation in the Exchange Solutions business segment.
	Liazon RSUs. In November 2013, in connection with the acquisition, we assumed the Liazon Corporation 2011 Equity Incentive Plan and converted the outstanding unvested restricted stock units into 70,533 Towers Watson restricted stock units using a conversion ratio stated in the agreement for the exercise price and number of options. The fair value of these restricted stock units was calculated using the fair value share price of Towers Watson’s closing share price on the date of acquisition. We determined the fair value of the portion of the 70,533 outstanding RSUs related to pre-acquisition employee service using Towers Watson graded vesting methodology from the date of grant to the acquisition date to be $5.7 million which was added to the transaction consideration. The fair value of the remaining portion of RSUs related to the post-acquisition employee services was $2.1 million, and will be recorded over the future vesting periods. For the three and nine months ended March 31, 2014, we recorded $0.4 million and $0.7 million, respectively, of non-cash stock based compensation.
	2013 SEP. During the quarter ended September 30, 2013, 131,286 RSUs were granted to certain employees under our Select Equity Plan with a grant date fair value of $91.43, based on our closing stock price. The RSUs vest annually over a three-year period. We assumed a 5% forfeiture rate with these awards. For the three and nine months ended March 31, 2014, we recorded $1.6 million and $5.0 million, respectively, of non-cash stock based compensation related to these grants.
	2012 SEP. During the quarter ended September 30, 2012, 147,503 RSUs were granted to certain employees under our Select Equity Plan with a grant date fair value of $53.93, based on our closing stock price. The RSUs vest annually over a three-year period. We assumed a 5% forfeiture rate with these awards. For the three and nine months ended March 31, 2014, we recorded $0.5 million and $1.5 million, respectively, of non-cash stock based compensation related to these grants. For the three and nine months ended March 31, 2013, we recorded $1.2 million and $3.5 million, respectively, of non-cash stock-based compensation related to these grants.
	2011 SEP. During the quarter ended September 30, 2011, 577,191 RSUs were granted to certain employees under our Select Equity Plan, of which 288,595 were vested immediately in conjunction with our annual fiscal year 2011 performance bonus payments. The remaining 288,595 RSUs vest annually over a three-year period. We assumed a 5% forfeiture rate with these awards. For the three and nine months ended March 31, 2014, we recorded $0.4 million and $1.3 million of non-cash stock based compensation related to these grants, respectively. For the three and nine months ended March 31, 2013, we recorded $1.1 million and $3.3 million of non-cash stock based compensation related to these grants, respectively.
	We classified $1.2 million for the nine months ended March 31, 2014 to discontinued operations related to non-cash stock based compensation for the Brokerage employees awards under our SEP Plan. There were no amounts classified to discontinued operations related to non-cash stock based compensation for the Brokerage employees awards under our SEP Plan for the three months ended March 31, 2014. We classified $0.1 million and $0.4 million for the three and nine months ended March 31, 2013, respectively, to discontinued operations related to non-cash stock based compensation for the Brokerage employees awards under our SEP Plan.
	Outside Directors
	The Towers Watson & Co. Compensation Plan for Non-Employee Directors provides for cash and stock compensation for outside directors. During the three months ended September 30, 2013, 10,251 RSUs were granted for the annual award for outside directors for service on the board of directors in equal quarterly installments over fiscal year 2014. During the three months ended September 30, 2012, 16,027 restricted stock units were granted for the annual award for outside directors for service on the board of directors in equal quarterly installments over fiscal year 2013. In fiscal year 2010, 22,149 restricted stock units were granted for the initial award for outside directors for service on the board of directors, which vest in equal annual installments over a three-year period ending January 1, 2013. We recorded non-cash stock based compensation related to these awards for outside directors of $0.1 million and $0.8 million, respectively, for the three and nine months ended March 31, 2014, and $0.1 million and $0.9 million, respectively, for the three and nine months ended March 31, 2013.
	Stock Options
	Liazon Options. In November 2013, in connection with the Liazon acquisition, we assumed the Liazon Corporation 2011 Equity Incentive Plan and converted the outstanding unvested employee stock options into 37,162 Towers Watson stock options using a conversion ratio stated in the agreement for the exercise price and number of options. The fair value of the vested stock options was calculated using the Black-Scholes model with a volatility and risk-free interest rate over the expected term of each group of options using the fair value share price of Towers Watson’s closing share price on the date of acquisition. The fair value of the new awards was less than the acquisition date fair value of the replaced Liazon options; accordingly, no compensation expense was recorded. We determined the fair value of the portion of the 37,162 outstanding options relating to the pre-acquisition employee service using Towers Watson graded vesting methodology from the date of grant to the acquisition date to be $2.2 million, which was added to the transaction consideration. The fair value of the remaining portion of unvested options related to the post-acquisition employee service was $1.7 million, which will be recorded over the future vesting periods. We recorded non-cash stock based compensation related to these awards of $0.3 million and $0.4 million, respectively, for the three and nine months ended March 31, 2014.
	Extend Health Options. In May 2012, we assumed the Extend Health, Inc. 2007 Equity Incentive Plan and converted the outstanding unvested employee stock options into 377,614 Towers Watson stock options using a conversion ratio stated in the agreement for the exercise price and number of options. The fair value of the vested stock options was calculated using the Black-Scholes model with a volatility and risk-free interest rate over the expected term of each group of options using the fair value share price of Towers Watson’s closing share price on the date of acquisition. The fair value of the new awards was less than the acquisition date fair value of the replaced Extend Health options; accordingly, no compensation expense was recorded. We determined the fair value of the portion of the 377,614 outstanding options related to pre-acquisition employee service using Towers Watson graded vesting methodology from the date of grant to the acquisition date was $11.2 million, which was added to the transaction consideration. The fair value of the remaining portion of the unvested options, less 10% estimated forfeitures, was $7.9 million, and will be recorded over the future vesting periods. We recorded non-cash stock based compensation related to these awards of $0.3 million and $1.2 million, respectively, for the three and nine months ended March 31, 2014 and $1.1 million and $5.0 million, respectively, for the three and nine months ended March 31, 2013.

Income_Taxes

Income Taxes	9 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes.
	Provision for income taxes on continuing operations for the three and nine months ended March 31, 2014 was $39.2 million and $96.3 million, respectively, compared to $35.3 million and $99.6 million, respectively, for the three and nine months ended March 31, 2013. The effective tax rate was 25.7% for the nine months ended March 31, 2014 and 31.9% for the nine months ended March 31, 2013. The decrease in the effective tax rate for the nine months is primarily due to current year income tax benefits on the release of uncertain tax positions of 4.6% related to the lapses in statute of limitations in various taxing jurisdictions, primarily the U.S., and an income tax benefit of 1.0% in connection with the enacted statutory tax rate reduction in the U.K. Towers Watson records a tax benefit on net operating loss carryovers and net deferred tax assets only if it is more likely than not that a benefit will be realized.
	It is reasonably possible that during the next 12 months the Company’s liability for uncertain tax positions may change by a significant amount. The Company may settle certain U.S. tax examinations or have lapses in statute of limitations for different amounts than the Company has accrued as uncertain tax positions. The Company may need to accrue and ultimately pay additional amounts for tax positions that previously met a more likely than not standard if such positions are not upheld. Conversely, the Company could settle positions with the tax authorities for amounts lower than have been accrued or extinguish a position through payment. The Company believes the outcomes which are reasonably possible within the next 12 months may result in a reduction in the liability for uncertain tax positions in the range of approximately $5.0 million to $11.8 million, excluding interest and penalties.
	On September 13, 2013, the Treasury Department and the Internal Revenue Service released final regulations that provide guidance on the deductibility of amounts paid to acquire, produce, or improve tangible property. These regulations also provide rules applicable to materials and supplies. The Company has assessed the impacts of these regulations and confirmed that the impact of these new regulations will not be material to the financial statements.

Segment_Information

Segment Information	9 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information.
	Towers Watson has four reportable operating segments or business areas:
	•	Benefits
	•	Risk and Financial Services
	•	Talent and Rewards
	•	Exchange Solutions
	Towers Watson’s chief operating decision maker is its chief executive officer. It was determined that Towers Watson operational data used by the chief operating decision maker is that of the segments. Management bases strategic goals and decisions on these segments and the data presented below is used to assess the adequacy of strategic decisions, the method of achieving these strategies and related financial results.
	Management evaluates the performance of its segments and allocates resources to them based on net operating income on a pre-bonus, pre-tax basis. Revenue includes amounts that were directly incurred on behalf of our clients and reimbursed by them (reimbursable expenses).
	On January 23, 2014, Towers Watson announced plans to expand the Exchange Solutions segment by combining operations and associates primarily from portions of the TAS North America line of business with the newly acquired Liazon entity within the existing Exchange Solutions segment to better align their respective strategic goals. The restructuring is expected to take place on July 1, 2014. We are still evaluating the impact to our operating segments and the related disclosures.
	All periods presented have been recast to exclude the operating results of our Brokerage business, which has been classified as discontinued operations.
	The table below presents specified information about the continuing operations of the reported segments for the three months ended March 31, 2014:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	527,414		$	174,382		$	127,572		$	47,551		$	876,919
	Net operating income	175,129			53,047			11,558			14,353			254,087
	The table below presents specified information about the continuing operations of the reported segments for the three months ended March 31, 2013:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	523,489		$	177,396		$	124,914		$	30,621		$	856,420
	Net operating income	184,304			46,426			13,179			14,648			258,557
	The table below presents specified information about the continuing operations of the reported segments for the nine months ended March 31, 2014:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	1,471,780		$	477,343		$	451,464		$	118,677		$	2,519,264
	Net operating income	461,016			109,976			108,718			13,586			693,296
	The table below presents specified information about the continuing operations of the reported segments for the nine months ended March 31, 2013:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	1,500,035		$	499,301		$	441,334		$	60,259		$	2,500,929
	Net operating income	505,975			110,950			99,048			(1,245		)	714,728
	The table below presents a reconciliation of the information reported by segment to the consolidated amounts reported from continuing operations for the three and nine months ended March 31, 2014 and 2013:
		Three Months Ended						Nine Months Ended
		March 31,						March 31,
		2014			2013			2014			2013
	Revenue:
	Total segment revenue	$	876,919		$	856,420		$	2,519,264		$	2,500,929
	Reimbursable expenses and other	27,914			36,557			83,663			96,304
	Revenue	$	904,833		$	892,977		$	2,602,927		$	2,597,233
	Net Operating Income:
	Total segment net operating income	$	254,087		$	258,557		$	693,296		$	714,728
	Differences in allocation methods (1)	(6,885		)	(5,010		)	9,970			984
	Amortization of intangibles	(19,380		)	(18,955		)	(56,963		)	(57,777		)
	Transaction and integration expenses	(241		)	(12,328		)	(1,049		)	(30,753		)
	Stock-based compensation (2)	(2,362		)	1,305			(7,707		)	(16,523		)
	Discretionary compensation	(75,712		)	(95,459		)	(225,919		)	(266,241		)
	Payroll tax on discretionary compensation	(5,335		)	(5,663		)	(13,978		)	(15,347		)
	Other, net	(5,749		)	(1,190		)	(28,380		)	(14,121		)
	Income from operations	$	138,423		$	121,257		$	369,270		$	314,950
	________________________
	-1	Depreciation, general and administrative, pension, and medical costs are allocated to our segments based on budgeted expenses determined at the beginning of the fiscal year, as management believes that these costs are largely uncontrollable to the segment. To the extent that the actual expense base upon which allocations are made differs from the forecast/budget amount, a reconciling item will be created between internally allocated expenses and the actual expense that we report for GAAP purposes.
	-2	Stock-based compensation excludes RSUs granted in conjunction with our performance bonus, which are included in discretionary compensation.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share.
	We present earnings per share (“EPS”) using the two-class method. This method addresses whether awards granted in share-based transactions are participating securities prior to vesting and therefore need to be included in the earning allocation in computing earnings per share using the two-class method. This method requires non-vested share-based payment awards that have non-forfeitable rights to dividends or dividend equivalents to be treated as a separate class of securities in calculating earnings per share. Our participating securities include non-vested restricted stock. On January 1, 2013, all remaining outstanding shares of this restricted stock vested and were converted to freely tradable shares of Towers Watson Class A common stock. The components of basic and diluted earnings per share are as follows:
		Three Months Ended March 31,
		2014					2013
		Income		Shares	Per Share		Income			Shares	Per Share
					Amount						Amount
	Basic EPS
	Income from continuing operations	$	101,913				83,145
	Less: Income/(loss) attributable to non-controlling interests	3,346					(71		)
	Income from continuing operations attributable to common stockholders	98,567					83,216
	Less: Income allocated to participating securities	—					—
	Income from continuing operations attributable to common stockholders	$	98,567	70,447	$	1.4	$	83,216		70,530	$	1.18
	Diluted EPS
	Share-based compensation awards	—		437			—			546
	Income available to common shareholders	$	98,567	70,884	$	1.39	$	83,216		71,076	$	1.17
		Nine Months Ended March 31,
		2014					2013
		Income		Shares	Per Share		Income			Shares	Per Share
					Amount						Amount
	Basic EPS
	Income from continuing operations	$	277,985				$	212,380
	Less: Income/(loss) attributable to non-controlling interests	7,057					(2,695		)
	Income from continuing operations attributable to common stockholders	270,928					215,075
	Less: Income allocated to participating securities	—					3,289
	Income from continuing operations attributable to common stockholders	$	270,928	70,685	$	3.83	$	211,786		69,977	$	3.03
	Diluted EPS
	Share-based compensation awards	—		362			—			545
	Income available to common shareholders	$	270,928	71,047	$	3.81	$	211,786		70,522	$	3

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Mar. 31, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements.
	Not yet adopted
	On June 7, 2013, the FASB issued ASU 2013-08, “Financial Services – Investment Companies (Topic 946): Amendments to the Scope, Measurement, and Disclosure Requirements,” which amends the criteria an entity would need to meet to qualify as an investment company under ASC 946. The ASU (1) introduces new disclosure requirements that apply to all investment companies and (2) amends the measurement criteria for certain interests in other investment companies. The ASU also amends the requirements in ASC 810 related to qualifying for the “investment-company deferral” in ASU 2010-10 as well as the requirements in ASC 820 related to qualifying for the “net asset value practical expedient” in ASU 2009-12. We manage certain funds that are considered variable interest entities and for which our management fee is considered a variable interest. These funds qualify for the “investment-company deferral” in ASU 2010-10 and therefore are subject to the consolidation guidance prior to the issuance of ASU 2009-17. The ASU is effective for annual periods that begin after December 15, 2013 and interim periods within those annual periods. Early adoption is prohibited. The Company is currently evaluating whether these funds will continue to qualify for the “investment-company deferral” based on the amended investment company criteria proscribed by ASU 2013-08.

Accounting_Policies_Policies

Accounting Policies (Policies)	9 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Variable Interest Entities	'
	Variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity and therefore require a different approach in determining which party involved with the VIE should consolidate the entity. With a VIE, either the entity does not have sufficient equity at risk to finance its activities without additional subordinated financial support from other parties or the entity has equity investors that do not have the ability to make significant decisions relating to the entity’s operations through voting rights. The entity that has a controlling financial interest in a VIE is referred to as the primary beneficiary and is required to consolidate the VIE.
	Through our wholly owned subsidiaries, Towers Watson Investment Management Limited and Towers Watson Investment Management, Ireland, we manage approximately $1.8 billion of assets in investment funds that are considered VIEs and for which our management fee is considered a variable interest. We have determined that these funds qualify for the deferral to certain provisions of ASC Subtopic 810-10, Consolidation – Overall, afforded by ASU 2010-10, Consolidation – Amendments for Certain Investment Funds. In accordance with this deferral, we determine whether we consolidate the fund based on whether we absorb a majority of the fund’s expected losses or receive a majority of the fund’s expected returns.
Recent Accounting Prounoucements, Not Yet Adopted	'
	Not yet adopted
	On June 7, 2013, the FASB issued ASU 2013-08, “Financial Services – Investment Companies (Topic 946): Amendments to the Scope, Measurement, and Disclosure Requirements,” which amends the criteria an entity would need to meet to qualify as an investment company under ASC 946. The ASU (1) introduces new disclosure requirements that apply to all investment companies and (2) amends the measurement criteria for certain interests in other investment companies. The ASU also amends the requirements in ASC 810 related to qualifying for the “investment-company deferral” in ASU 2010-10 as well as the requirements in ASC 820 related to qualifying for the “net asset value practical expedient” in ASU 2009-12. We manage certain funds that are considered variable interest entities and for which our management fee is considered a variable interest. These funds qualify for the “investment-company deferral” in ASU 2010-10 and therefore are subject to the consolidation guidance prior to the issuance of ASU 2009-17. The ASU is effective for annual periods that begin after December 15, 2013 and interim periods within those annual periods. Early adoption is prohibited. The Company is currently evaluating whether these funds will continue to qualify for the “investment-company deferral” based on the amended investment company criteria proscribed by ASU 2013-08.

Acquisitions_and_Divestitures_

Acquisitions and Divestitures (Tables)	9 Months Ended
	Mar. 31, 2014
Acquisitions and Divestitures [Abstract]	'
Schedule Of Disposal Groups Including Discontinued Operations Income Statement [Table Text Block]	'
	The following selected financial information relates to the Brokerage business’s operations for the three and nine months ended March 31, 2014 and 2013, respectively:
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014			2013		2014			2013
	Revenue from discontinued operations	$	—		$	47,990	$	63,762		$	124,227
	(Loss)/income from discontinued operations before taxes	(1,037		)	18,321		23,361			32,016
	Tax expense on discontinued operations	188			6,621		8,989			11,158
	Net (loss)/income from discontinued operations	(1,225		)	11,700		14,372			20,858
	Gain from sale of discontinued operations	5,151			—		23,631			—
	Tax (credit)/expense on gain from sale of discontinued operations	(13		)	—		32,023			—
	Net income/(loss) from sale of discontinued operations	5,164			—		(8,392		)	—
	Total net income from discontinued operations	$	3,939		$	11,700	$	5,980		$	20,858

Investments_Tables

Investments (Tables)	9 Months Ended
	Mar. 31, 2014
Investment [Abstract]	'
Schedule of investments	'
	Additional information on available-for-sale security balances is provided in the following table as of March 31, 2014 and June 30, 2013:
		As of March 31, 2014									As of June 30, 2013
		Amortized		Unrealized		Unrealized			Estimated		Amortized		Unrealized		Unrealized			Estimated
		Cost		Gains		Losses			Fair Value		Cost		Gains		Losses			Fair Value
	Fixed income securities (a)	$	14,992	$	2	$	—		$	14,994	$	56,602	$	15	$	(2	)	$	56,615
	Equity securities (a)	114		16		(3		)	127		853		476		(1		)	1,328
	Mutual funds and exchange-traded funds (b)	47,912		1,641		—			49,553		26,666		14		(97		)	26,583
	(a)	As of March 31, 2014, all fixed income securities are classified as held-to-maturity and are reflected as short-term investments on the condensed consolidated balance sheet. As of June 30, 2013, all fixed income securities are classified as available-for-sale and are reflected as short-term investments on the condensed consolidated balance sheet. Certain liquid short-term investments, such as term deposits and certificates of deposits, are classified as short-term investments on the balance sheet but are not available-for-sale or held-to-maturity investments and therefore, are not included in the table above.
	(b)	Reflected as short-term investments or other assets on the condensed consolidated balance sheet as of March 31, 2014 and June 30, 2013.

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of goodwill	'
	The components of goodwill and intangible assets are outlined below for the nine months ended March 31, 2014:
		Benefits			Risk and			Talent and			Exchange			All Other			Total
					Financial			Rewards			Solutions
					Services
	Balance as of June 30, 2013	$	1,233,272		$	534,150		$	108,850		$	341,449		$	1,214		$	2,218,935
	Goodwill related to acquisitions	—			—			—			173,968			—			173,968
	Goodwill related to disposals	—			(167,822		)	—			—			—			(167,822		)
	Translation adjustment	38,260			17,647			3,109			—			—			59,016
	Balance as of March 31, 2014	$	1,271,532		$	383,975		$	111,959		$	515,417		$	1,214		$	2,284,097
Schedule of changes in finite-lived intangible assets by major class	'
	The following table reflects changes in the net carrying amount of the components of finite-lived intangible assets for the nine months ended March 31, 2014:
		Customer			Core/			Favorable			Trademarks & trade names			Total
		related			developed			lease
		intangible			technology			agreements
	Balance as of June 30, 2013	$	246,247		$	69,515		$	3,565		$	—		$	319,327
	Intangibles acquired	600			34,300			—			150			35,050
	Intangibles related to disposal	(8,254		)	—			—			—			(8,254		)
	Amortization	(35,106		)	(22,146		)	(710		)	(150		)	(58,112		)
	Translation adjustment	5,187			715			(16		)	—			5,886
	Balance as of March 31, 2014	$	208,674		$	82,384		$	2,839		$	—		$	293,897
Schedule of finite-lived intangible assets by major class	'
	The following table reflects the carrying value of finite-lived intangible assets and liabilities as of March 31, 2014 and June 30, 2013:
		As of March 31, 2014						As of June 30, 2013
		Gross			Accumulated			Gross			Accumulated
		Carrying			Amortization			Carrying			Amortization
		Amount						Amount
	Finite-lived intangible assets and liabilities:
	Trade name	$	520		$	520		$	370		$	370
	Customer related intangibles	387,223			178,549			390,027			143,780
	Core/developed technology	175,566			93,182			164,762			95,247
	Favorable lease agreements	6,453			3,614			6,496			2,931
	Total finite-lived intangible assets	$	569,762		$	275,865		$	561,655		$	242,328
	Unfavorable lease agreements	25,982			14,947			25,591			12,122
	Total finite-lived intangible liabilities	$	25,982		$	14,947		$	25,591		$	12,122
Schedule of rent offset, future amortization	'
	The following table reflects:
	1) future estimated amortization expense for amortizable intangible assets consisting of customer related intangibles and core/developed technology, and
	2) the rent offset resulting from the amortization of the net lease intangible assets and liabilities for the remainder of fiscal 2014 and for subsequent fiscal years:
	Fiscal year ending June 30,	Amortization			Rent (Offset)
					Expense
	2014	$	17,937		$	(575	)
	2015	67,783			(2,027		)
	2016	57,714			(1,567		)
	2017	53,379			(1,864		)
	2018	42,967			(1,981		)
	Thereafter	51,278			(182		)
	Total	$	291,058		$	(8,196	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Schedule of fair value, assets and liabilities measured on recurring basis	'
	The following presents our assets and liabilities measured at fair value on a recurring basis as of March 31, 2014 and June 30, 2013:
		Fair Value Measurements on a Recurring Basis at
		31-Mar-14
		Level 1		Level 2		Level 3		Total
	Assets:
	Available-for-sale securities:
	Corporate bonds (a)	$	—	$	14,994	$	—	$	14,994
	Equity securities (a)	127		—		—		127
	Mutual funds / exchange traded funds (b)	49,553		—		—		49,553
	Derivatives:
	Foreign exchange forwards (c)	—		417		—		417
	Liabilities:
	Derivatives:
	Foreign exchange forwards (c)	$	—	$	1,183	$	—	$	1,183
	Contingent Liabilities:
	Retention bonus liability (d)	—		—		19,807		19,807
		Fair Value Measurements on a Recurring Basis at
		30-Jun-13
		Level 1		Level 2		Level 3		Total
	Assets:
	Available-for-sale securities:
	U.S. treasury securities and obligations of the U.S government, government agencies and authorities (a)	$	2,014	$	—	$	—	$	2,014
	U.S. Corporate bonds (a)	—		53,100		—		53,100
	Foreign corporate bonds (a)	—		1,501		—		1,501
	Equity securities (a)	1,328		—		—		1,328
	Mutual funds / exchange-traded funds (b)	26,583		—		—		26,583
	Derivatives:
	Foreign exchange forwards (c)	—		546		—		546
	Liabilities:
	Derivatives:
	Foreign exchange forwards (c)	$	—	$	353	$	—	$	353
	_________________________
	(a)	These assets are included in short-term investments on the condensed consolidated balance sheet.
	(b)	These assets are included in short-term investments or other assets on the condensed consolidated balance sheet.
	(c)	These derivative investments are included in other current assets or accounts payable, accrued liabilities and deferred income on the condensed consolidated balance sheet. See Note 6 for further information on our derivative investments.
	(d)	These liabilities are included in other current liabilities and other noncurrent liabilities on the condensed consolidated balance sheet. The fair value was determined using a discounted cash flow model. There have been no material changes in the fair value of this liability subsequent to initial recognition.

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of derivative assets and liabilities at fair value	'
	The fair value of our derivative instruments held as of March 31, 2014 and June 30, 2013 and their location in the condensed consolidated balance sheet are as follows:
		Derivative assets										Derivative liabilities
		Balance sheet		Fair value								Balance sheet		Fair value
		location										location
				31-Mar-14				30-Jun-13						31-Mar-14				30-Jun-13
	Derivatives designated as hedging instruments:
	Foreign exchange forwards	Other current assets		$	295			$	395			Accounts payable,		$	(1,181	)		$	(159	)
												accrued liabilities
												and deferred income
	Derivatives not designated as hedging instruments:
	Foreign exchange forwards	Other current assets		122				151				Accounts payable,		(2		)		(194		)
												accrued liabilities
												and deferred income
	Total derivative assets (liabilities)			$	417			$	546					$	(1,183	)		$	(353	)
Schedule of the effect of derivative instruments on statement of financial performance	'
	The effects of derivative instruments that are designated as hedging instruments on the consolidated statements of operations and the consolidated statements of changes in stockholders’ equity for the three months ended March 31, 2014 and 2013 and for the nine months ended March 31, 2014 and 2013 are as follows:
	Derivatives designated as hedging		Gain recognized in OCI								Location		Loss reclassified								Location of loss recognized in income	Loss recognized
	instruments for the three months ended		(effective portion)								of loss reclassified		from OCI into income								(ineffective portion and	in income (ineffective
	March 31, 2014 and 2013:										from OCI into income		(effective portion)								amount excluded from	portion and
											(effective portion)										effectiveness testing)	amount excluded from
																						effectiveness testing)
			2014				2013						2014				2013					2014			2013
	Foreign exchange Forwards		$	85			$	556			General and		$	(520	)		$	(386	)		General and	$	(4	)	$	(1	)
											administrative										administrative
											expenses										expenses
	Total		$	85			$	556					$	(520	)		$	(386	)			$	(4	)	$	(1	)
	Derivatives designated as hedging		Loss								Location		Loss reclassified								Location of loss	Loss recognized
	instruments for the nine months ended		recognized in OCI								of loss reclassified		from OCI into income								recognized in income	in income (ineffective
	March 31, 2014 and 2013:		(effective portion)								from OCI into income		(effective portion)								(ineffective portion and	portion and
											(effective portion)										amount excluded from	amount excluded from
																					effectiveness testing)	effectiveness testing)
			2014				2013						2014				2013					2014			2013
	Foreign exchange forwards		$	(1,978	)		$	(503	)		General and		$	852			$	(121	)		General and	$	(1	)	$	(1	)
											administrative										administrative
											expenses										expenses
	Total		$	(1,978	)		$	(503	)				$	852			$	(121	)			$	(1	)	$	(1	)
Schedule of other derivatives not designated as hedging instruments, Statements of financial performance and financial position	'
	The effects of derivatives that have not been designated as hedging instruments on the condensed consolidated statements of operations for the three and nine months ended March 31, 2014 and 2013 are as follows:
					(Loss) gain recognized in income
					Three Months Ended								Nine Months Ended
					March 31,								March 31,
	Derivatives not designated as hedging instruments:		Location of (loss) gain		2014				2013				2014				2013
			recognized in income
	Foreign exchange forwards		General and administrative expenses		$	(365	)		$	(146	)		$	697			$	1,928
	Total				$	(365	)		$	(146	)		$	697			$	1,928

Retirement_Benefits_Tables

Retirement Benefits (Tables)	9 Months Ended
	Mar. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]	'
Schedule of net benefit costs Pension	'
	The following tables set forth the components of net periodic benefit cost for the Company’s defined benefit pension plan for North America and Europe for the three and nine months ended March 31, 2014 and 2013:
		Three Months Ended March 31,
		2014						2013
		North			Europe			North			Europe
		America						America
	Service cost	$	17,493		$	3,054		$	17,731		$	3,074
	Interest cost	35,062			10,182			33,854			9,182
	Expected return on plan assets	(46,968		)	(11,457		)	(46,586		)	(10,168		)
	Amortization of net loss	5,473			2,235			11,440			1,441
	Amortization of prior service (credit)/cost	(2,095		)	10			(2,094		)	10
	Net periodic benefit cost	$	8,965		$	4,024		$	14,345		$	3,539
		Nine Months Ended March 31,
		2014						2013
		North			Europe			North			Europe
		America						America
	Service cost	$	52,819		$	9,162		$	53,189		$	9,221
	Interest cost	105,628			30,545			101,566			27,545
	Expected return on plan assets	(141,375		)	(34,370		)	(139,540		)	(30,505		)
	Amortization of net loss	16,597			6,706			34,325			4,324
	Amortization of prior service (credit)/cost	(6,284		)	31			(6,283		)	29
	Net periodic benefit cost	$	27,385		$	12,074		$	43,257		$	10,614
Schedule of net benefit costs OPEB	'
	The following table sets forth the components of net periodic benefit cost for the Company’s post-retirement plans for the three and nine months ended March 31, 2014 and 2013:
		Three Months Ended						Nine Months Ended
		March 31,						March 31,
		2014			2013			2014			2013
	Service cost	$	365		$	441		$	1,097		$	1,323
	Interest cost	2,216			2,197			6,647			6,590
	Expected return on plan assets	(28		)	(33		)	(84		)	(98		)
	Amortization of net (gain) loss	(436		)	83			(1,309		)	250
	Amortization of prior service credit	(1,751		)	(2,051		)	(5,253		)	(6,152		)
	Net periodic benefit cost	$	366		$	637		$	1,098		$	1,913

Variable_Interest_Entities_Tab

Variable Interest Entities (Tables)	9 Months Ended
	Mar. 31, 2014
Variable Interest Entities [Abstract]	'
Redeemable Noncontrolling Interest	'
	The changes of the redeemable non-controlling interests balance for the nine months ended March 31, 2014 are as follows:
	Balance as of June 30, 2013	$	—
	Subscriptions of non-controlling interest holders in consolidated VIEs	332,722
	Mark-to-market gains on investments held by consolidated VIEs	6,297
	Deconsolidation of VIEs	(339,019		)
	Balance as of March 31, 2014	$	—

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income/(Loss) (Tables)	9 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Schedule of Accumulated Other Comprehensive Income/(Loss)	'
	Changes in accumulated other comprehensive income/(loss), net of non-controlling interests, are provided in the following table. The difference between the amounts presented in this table and the amounts presented in the condensed consolidated statements of comprehensive income are the corresponding components attributable to non-controlling interests, which are not material for further disclosure.
		Foreign			Hedge effectiveness (1)									Available-for-sale									Defined pension and
		currency												securities (2)									post-retirement benefit costs (3)
		translation
		-1			Before			Tax			After			Before			Tax			After			Before			Tax			After
					Tax						Tax			Tax						Tax			Tax						Tax
	As of June 30, 2013	$	(131,096	)	$	237		$	(105	)	$	132		$	547		$	(134	)	$	413		$	(233,817	)	$	64,904		$	(168,913	)
	Other comprehensive income/(loss) before reclassifications	88,573			(1,978		)	681			(1,297		)	457			(130		)	327			—			—			—
	Amounts reclassified from accumulated other comprehensive income	—			852			(293		)	559			(761		)	173			(588		)	11,942			(2,605		)	9,337
	Net current-period other comprehensive income/(loss)	88,573			(1,126		)	388			(738		)	(304		)	43			(261		)	11,942			(2,605		)	9,337
	As of March 31, 2014	$	(42,523	)	$	(889	)	$	283		$	(606	)	$	243		$	(91	)	$	152		$	(221,875	)	$	62,299		$	(159,576	)
	-1	Reclassification adjustments from accumulated other comprehensive income are included in general and administrative expenses (see Note 6 – Derivative Financial Instruments for additional details regarding the reclassification adjustments for the hedge settlements)
	-2	Reclassification adjustments from accumulated other comprehensive income are included in income from discontinued operations
	-3	Reclassification adjustments from accumulated other comprehensive income are included in the computation of net periodic pension cost (see Note 7 – Retirement Benefits for additional details)

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Schedule of segment information, by segment	'
	The table below presents specified information about the continuing operations of the reported segments for the three months ended March 31, 2014:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	527,414		$	174,382		$	127,572		$	47,551		$	876,919
	Net operating income	175,129			53,047			11,558			14,353			254,087
	The table below presents specified information about the continuing operations of the reported segments for the three months ended March 31, 2013:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	523,489		$	177,396		$	124,914		$	30,621		$	856,420
	Net operating income	184,304			46,426			13,179			14,648			258,557
	The table below presents specified information about the continuing operations of the reported segments for the nine months ended March 31, 2014:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	1,471,780		$	477,343		$	451,464		$	118,677		$	2,519,264
	Net operating income	461,016			109,976			108,718			13,586			693,296
	The table below presents specified information about the continuing operations of the reported segments for the nine months ended March 31, 2013:
		Benefits			Risk and			Talent and			Exchange			Total
					Financial Services			Rewards			Solutions
	Revenue (net of reimbursable expenses)	$	1,500,035		$	499,301		$	441,334		$	60,259		$	2,500,929
	Net operating income	505,975			110,950			99,048			(1,245		)	714,728
Schedule of reconciliation of segment information to the consolidated amounts	'
	The table below presents a reconciliation of the information reported by segment to the consolidated amounts reported from continuing operations for the three and nine months ended March 31, 2014 and 2013:
		Three Months Ended						Nine Months Ended
		March 31,						March 31,
		2014			2013			2014			2013
	Revenue:
	Total segment revenue	$	876,919		$	856,420		$	2,519,264		$	2,500,929
	Reimbursable expenses and other	27,914			36,557			83,663			96,304
	Revenue	$	904,833		$	892,977		$	2,602,927		$	2,597,233
	Net Operating Income:
	Total segment net operating income	$	254,087		$	258,557		$	693,296		$	714,728
	Differences in allocation methods (1)	(6,885		)	(5,010		)	9,970			984
	Amortization of intangibles	(19,380		)	(18,955		)	(56,963		)	(57,777		)
	Transaction and integration expenses	(241		)	(12,328		)	(1,049		)	(30,753		)
	Stock-based compensation (2)	(2,362		)	1,305			(7,707		)	(16,523		)
	Discretionary compensation	(75,712		)	(95,459		)	(225,919		)	(266,241		)
	Payroll tax on discretionary compensation	(5,335		)	(5,663		)	(13,978		)	(15,347		)
	Other, net	(5,749		)	(1,190		)	(28,380		)	(14,121		)
	Income from operations	$	138,423		$	121,257		$	369,270		$	314,950
	________________________
	-1	Depreciation, general and administrative, pension, and medical costs are allocated to our segments based on budgeted expenses determined at the beginning of the fiscal year, as management believes that these costs are largely uncontrollable to the segment. To the extent that the actual expense base upon which allocations are made differs from the forecast/budget amount, a reconciling item will be created between internally allocated expenses and the actual expense that we report for GAAP purposes.
	-2	Stock-based compensation excludes RSUs granted in conjunction with our performance bonus, which are included in discretionary compensation.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of earnings per share, basic and diluted	'
	The components of basic and diluted earnings per share are as follows:
		Three Months Ended March 31,
		2014					2013
		Income		Shares	Per Share		Income			Shares	Per Share
					Amount						Amount
	Basic EPS
	Income from continuing operations	$	101,913				83,145
	Less: Income/(loss) attributable to non-controlling interests	3,346					(71		)
	Income from continuing operations attributable to common stockholders	98,567					83,216
	Less: Income allocated to participating securities	—					—
	Income from continuing operations attributable to common stockholders	$	98,567	70,447	$	1.4	$	83,216		70,530	$	1.18
	Diluted EPS
	Share-based compensation awards	—		437			—			546
	Income available to common shareholders	$	98,567	70,884	$	1.39	$	83,216		71,076	$	1.17
		Nine Months Ended March 31,
		2014					2013
		Income		Shares	Per Share		Income			Shares	Per Share
					Amount						Amount
	Basic EPS
	Income from continuing operations	$	277,985				$	212,380
	Less: Income/(loss) attributable to non-controlling interests	7,057					(2,695		)
	Income from continuing operations attributable to common stockholders	270,928					215,075
	Less: Income allocated to participating securities	—					3,289
	Income from continuing operations attributable to common stockholders	$	270,928	70,685	$	3.83	$	211,786		69,977	$	3.03
	Diluted EPS
	Share-based compensation awards	—		362			—			545
	Income available to common shareholders	$	270,928	71,047	$	3.81	$	211,786		70,522	$	3

Organization_and_Basis_of_Pres1

Organization and Basis of Presentation (Details)	9 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Current Fiscal Year End Date	'--06-30

Acquisitions_and_Divestitures_1

Acquisitions and Divestitures (Details) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended		9 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 19, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
					Brokerage Business [Member]	Brokerage Business [Member]	Brokerage Business [Member]	Brokerage Business [Member]	Brokerage Business [Member]	Brokerage Business [Member]	Brokerage Business [Member]
								Alliance Agreement [Member]	Insurance And Reinsurance Placement [Member]	Transitional Services Agreement [Member]	Combined Ongoing Expenses [Member]
Discontinued Operations Disclosures	'	'	'	'	'	'	'	'	'	'	'
Description of disposal transaction	'	'	'	'	'	'On September 19, 2013, we entered into a definitive agreement to sell our Reinsurance and Property and Casualty Insurance Brokerage (“Brokerage”) business to Jardine Lloyd Thompson Group plc (“JLT”) for cash consideration of $250 million. The Brokerage business was a component of our Risk and Financial Services segment. The sale closed during our second quarter of fiscal year 2014. We divested this business as part of our strategy to focus on the businesses where we are market leaders. We continue to focus on risk consulting, software and other services for the insurance industry. The business will be branded for a transitional period of 15 months from the closing date as JLT Towers Re.	'	'	'	'	'
Segment disposal group belonged to	'	'	'	'	'Risk and Financial Services segment	'	'	'	'	'	'
Agreement proceeds	'	'	'	'	$250,000,000	'	'	'	'	'	'
Amount of continuing cash flows	'	'	'	'	'	'	'	'	'	6,300,000	'
Discontinued operation percentage of continuing cash flows after disposal	'	'	'	'	'	'	'	1.00%	'	'	7.40%
Intercompany revenue eliminated	'	'	'	'	'	'	'	'	2,800,000	'	'
Selected Income Statement Information	'	'	'	'	'	'	'	'	'	'	'
Revenue from discontinued operations	0	47,990,000	63,762,000	124,227,000	'	'	'	'	'	'	'
Income from discontinued operations before taxes	-1,037,000	18,321,000	23,361,000	32,016,000	'	'	'	'	'	'	'
Tax expense on discontinued operations	188,000	6,621,000	8,989,000	11,158,000	'	'	'	'	'	'	'
Net income from discontinued operations	-1,225,000	11,700,000	14,372,000	20,858,000	'	'	'	'	'	'	'
Gain from sale of discontinued operations	5,151,000	0	23,631,000	0	'	'	'	'	'	'	'
Tax expense on gain from sale of discontinued operations	-13,000	0	32,023,000	0	'	'	'	'	'	'	'
Net loss from sale of discontinued operations	5,164,000	0	-8,392,000	0	'	'	'	'	'	'	'
Total net (loss)/income from discontinued operations	3,939,000	11,700,000	5,980,000	20,858,000	'	'	'	'	'	'	'
Proceeds from purchase price adjustment	'	'	'	'	28,700,000	'	'	'	'	'	'
Proceeds from discontinued operations	'	'	256,953,000	4,285,000	'	2,700,000	'	'	'	'	'
Description of retention liability	'	'	'	'	'	'	'As part of the sale, the Company agreed to repay JLT for retention payments made to certain employees of Brokerage if they remain with the business on the 30-day anniversary of the sale and the first and second anniversary of the sale. The value ascribed to this portion of the obligation is $21.7 million at the time of the sale. The remaining liability at March 31, 2014 is carried at fair value on the accompanying consolidated balance sheets (see Note 5 – Fair Value Measurements). The total amount has been classified as current or non-current liabilities based on the expected payment dates.	'	'	'	'
Retention liability amount	'	'	'	'	21,700,000	'	'	'	'	'	'
Agreement consideration	'	'	'	'	'	215,100,000	215,100,000	'	'	'	'
Transaction costs	'	'	'	'	'	$6,400,000	'	'	'	'	'

Acquisitions_and_Divestitures_2

Acquisitions and Divestitures (Summary of Acquisitions) (Details) (USD $)	9 Months Ended			0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Nov. 22, 2013	Mar. 31, 2014
				Liazon [Member]	Liazon [Member]
Business Acquisition [Line Items]	'	'	'	'	'
Acquisition date	'	'	'	22-Nov-13	'
Name of acquired entity	'	'	'	'Liazon	'
Cash paid	$210,814,000	$5,678,000	'	$203,200,000	'
Stock based compensation awards assumed, fair value	'	'	'	8,000,000	'
Acquired Finite-Lived Intangibles	35,050,000	'	'	'	34,300,000
Acquired deferred tax liabilities, noncurrent	'	'	'	'	700,000
Consideration transferred	'	'	'	211,200,000	'
Goodwill acquired	$2,284,097,000	'	$2,218,935,000	$174,000,000	'

Investments_Details

Investments (Details) (USD $)	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Abstract]	'	'	'
Proceeds from sale of available-for-sale securities	$59,300,000	$34,700,000	'
Fair value of investments in an unrealized loss position	'	'	36,300,000
Sale Brokerage Business [Member]	'	'	'
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Abstract]	'	'	'
Proceeds from sale of available-for-sale securities	1,600,000	'	'
Gain on available-for-sale securities	800,000	'	'
Fixed income securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized cost	14,992,000	'	56,602,000
Unrealized gains	2,000	'	15,000
Unrealized losses	0	'	-2,000
Estimated Fair Value	14,994,000	'	56,615,000
Equity securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized cost	114,000	'	853,000
Unrealized gains	16,000	'	476,000
Unrealized losses	-3,000	'	-1,000
Estimated Fair Value	127,000	'	1,328,000
Mutual funds and exchange-traded funds	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized cost	47,912,000	'	26,666,000
Unrealized gains	1,641,000	'	14,000
Unrealized losses	0	'	-97,000
Estimated Fair Value	$49,553,000	'	$26,583,000

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Goodwill [Line Items]	'	'	'	'
Amortization of intangible assets	$19,400	$19,400	$57,402	$59,287
Goodwill [Roll Forward]	'	'	'	'
Balance as of June 30, 2013	'	'	2,218,935	'
Goodwill related to acquisitions	'	'	173,968	'
Goodwill related to disposals	'	'	-167,822	'
Translation adjustment	'	'	59,016	'
Balance as of March 31, 2014	2,284,097	'	2,284,097	'
Benefits	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Balance as of June 30, 2013	'	'	1,233,272	'
Goodwill related to acquisitions	'	'	0	'
Goodwill related to disposals	'	'	0	'
Translation adjustment	'	'	38,260	'
Balance as of March 31, 2014	1,271,532	'	1,271,532	'
Risk and Financial Services	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Balance as of June 30, 2013	'	'	534,150	'
Goodwill related to acquisitions	'	'	0	'
Goodwill related to disposals	'	'	-167,822	'
Translation adjustment	'	'	17,647	'
Balance as of March 31, 2014	383,975	'	383,975	'
Talent and Rewards	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Balance as of June 30, 2013	'	'	108,850	'
Goodwill related to acquisitions	'	'	0	'
Goodwill related to disposals	'	'	0	'
Translation adjustment	'	'	3,109	'
Balance as of March 31, 2014	111,959	'	111,959	'
Exchange Solutions	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Balance as of June 30, 2013	'	'	341,449	'
Goodwill related to acquisitions	'	'	173,968	'
Goodwill related to disposals	'	'	0	'
Translation adjustment	'	'	0	'
Balance as of March 31, 2014	515,417	'	515,417	'
All Other	'	'	'	'
Goodwill [Roll Forward]	'	'	'	'
Balance as of June 30, 2013	'	'	1,214	'
Goodwill related to acquisitions	'	'	0	'
Goodwill related to disposals	'	'	0	'
Translation adjustment	'	'	0	'
Balance as of March 31, 2014	$1,214	'	$1,214	'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets (Details1) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Finite-Lived Intangible Assets [Roll Forward]	'	'	'	'	'
Balance as of June 30, 2013	'	'	$319,327,000	'	'
Intangibles acquired	35,050,000	'	35,050,000	'	'
Intangibles related to disposal	'	'	-8,254,000	'	'
Amortization	-19,400,000	-19,400,000	-57,402,000	-59,287,000	'
Total intangible amortization and rent expense	'	'	-58,112,000	'	'
Translation adjustment	'	'	5,886,000	'	'
Balance as of March 31, 2014	293,897,000	'	293,897,000	'	'
Intangible Assets Other Disclosures [Abstract]	'	'	'	'	'
Indefinite-lived intangible assets (excluding goodwill)	377,300,000	'	377,300,000	'	368,400,000
Intangible Lease Liability	11,000,000	'	11,000,000	'	13,500,000
Reduction to rent expense	'	'	2,500,000	'	'
Finite-Lived Intangible Assets By Category [Abstract]	'	'	'	'	'
Gross carrying amount	569,762,000	'	569,762,000	'	561,655,000
Accumulated amortization	275,865,000	'	275,865,000	'	242,328,000
Gross carrying amount - intangible liabilities	25,982,000	'	25,982,000	'	25,591,000
Accumulated amortization - intangible liabilities	14,947,000	'	14,947,000	'	12,122,000
Weighted average remaining life of intangible assets and liabilities	'	'	'5 years 4 months	'	'
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'	'	'	'
2014	17,937,000	'	17,937,000	'	'
2015	67,783,000	'	67,783,000	'	'
2016	57,714,000	'	57,714,000	'	'
2017	53,379,000	'	53,379,000	'	'
2018	42,967,000	'	42,967,000	'	'
Thereafter	51,278,000	'	51,278,000	'	'
Total	291,058,000	'	291,058,000	'	'
Future Amortization Rent Offset [Abstract]	'	'	'	'	'
2014	'	'	-575,000	'	'
2015	'	'	-2,027,000	'	'
2016	'	'	-1,567,000	'	'
2017	'	'	-1,864,000	'	'
2018	'	'	-1,981,000	'	'
Thereafter	'	'	-182,000	'	'
Total	'	'	-8,196,000	'	'
Intangible Assets, Amortization Period [Member]	'	'	'	'	'
Change in Accounting Estimate [Abstract]	'	'	'	'	'
Description of change in accounting estimate	'	'	'As part of the integration of our Retirement business, during the second quarter of fiscal 2012, management decided to discontinue the use of an application that was acquired in the Merger with an expected useful life of ten years. We calculated no impairment associated with this application and we shortened the life of the intangible asset and accelerated the amortization in the same pattern in which our clients are transitioned to the surviving application, which is expected to occur predominantly over the next two to three years. To develop our estimated useful remaining life of the application, we are using client engagement revenue and the planned transition developed by our business management.	'	'
Change in accounting estimate period charge	400,000	3,800,000	1,700,000	6,300,000	'
Customer related intangible	'	'	'	'	'
Finite-Lived Intangible Assets [Roll Forward]	'	'	'	'	'
Intangibles acquired	600,000	'	600,000	'	'
Intangibles related to disposal	'	'	-8,254,000	'	'
Amortization	'	'	-35,106,000	'	'
Translation adjustment	'	'	5,187,000	'	'
Finite-Lived Intangible Assets By Category [Abstract]	'	'	'	'	'
Gross carrying amount	387,223,000	'	387,223,000	'	390,027,000
Accumulated amortization	178,549,000	'	178,549,000	'	143,780,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'	'	'	'
Total	208,674,000	'	208,674,000	'	246,247,000
Core/developed technology	'	'	'	'	'
Finite-Lived Intangible Assets [Roll Forward]	'	'	'	'	'
Intangibles acquired	34,300,000	'	34,300,000	'	'
Intangibles related to disposal	'	'	0	'	'
Amortization	'	'	-22,146,000	'	'
Translation adjustment	'	'	715,000	'	'
Finite-Lived Intangible Assets By Category [Abstract]	'	'	'	'	'
Gross carrying amount	175,566,000	'	175,566,000	'	164,762,000
Accumulated amortization	93,182,000	'	93,182,000	'	95,247,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'	'	'	'
Total	82,384,000	'	82,384,000	'	69,515,000
Favorable lease agreements	'	'	'	'	'
Finite-Lived Intangible Assets [Roll Forward]	'	'	'	'	'
Intangibles acquired	0	'	0	'	'
Intangibles related to disposal	'	'	0	'	'
Rent expense for lease intangible	'	'	-710,000	'	'
Translation adjustment	'	'	-16,000	'	'
Finite-Lived Intangible Assets By Category [Abstract]	'	'	'	'	'
Gross carrying amount	6,453,000	'	6,453,000	'	6,496,000
Accumulated amortization	3,614,000	'	3,614,000	'	2,931,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'	'	'	'	'
Total	2,839,000	'	2,839,000	'	3,565,000
Trademarks & trade names	'	'	'	'	'
Finite-Lived Intangible Assets [Roll Forward]	'	'	'	'	'
Intangibles acquired	150,000	'	150,000	'	'
Amortization	'	'	-150,000	'	'
Finite-Lived Intangible Assets By Category [Abstract]	'	'	'	'	'
Gross carrying amount	520,000	'	520,000	'	370,000
Accumulated amortization	520,000	'	520,000	'	370,000
Unfavorable lease agreements	'	'	'	'	'
Finite-Lived Intangible Assets By Category [Abstract]	'	'	'	'	'
Gross carrying amount - intangible liabilities	25,982,000	'	25,982,000	'	25,591,000
Accumulated amortization - intangible liabilities	$14,947,000	'	$14,947,000	'	$12,122,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)

3 Months Ended

9 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

US Treasury and Government [Member]

Corporate Bond Securities [Member]

Corporate Bond Securities [Member]

Foreign Corporate Debt Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Mutual Funds [Member]

Mutual Funds [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

US Treasury and Government [Member]

Corporate Bond Securities [Member]

Corporate Bond Securities [Member]

Foreign Corporate Debt Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Mutual Funds [Member]

Mutual Funds [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

US Treasury and Government [Member]

Corporate Bond Securities [Member]

Corporate Bond Securities [Member]

Foreign Corporate Debt Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Mutual Funds [Member]

Mutual Funds [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

US Treasury and Government [Member]

Corporate Bond Securities [Member]

Corporate Bond Securities [Member]

Foreign Corporate Debt Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Mutual Funds [Member]

Mutual Funds [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Available-for-sale securities

'

'

'

'

'

$2,014,000

$14,994,000

$53,100,000

$1,501,000

$127,000

$1,328,000

$49,553,000

$26,583,000

'

'

'

$2,014,000

$0

$0

$0

$127,000

$1,328,000

$49,553,000

$26,583,000

'

'

'

$0

$14,994,000

$53,100,000

$1,501,000

$0

$0

$0

$0

'

'

'

$0

$0

$0

$0

$0

$0

$0

$0

'

'

Derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

417,000

546,000

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

417,000

546,000

'

'

'

'

'

'

'

'

'

0

0

Liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Financial Instruments, Liabilities, Fair Value Disclosure

'

'

'

'

'

'

'

'

'

'

'

'

'

1,183,000

353,000

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

1,183,000

353,000

'

'

'

'

'

'

'

'

'

0

0

Retention bonus liability

'

'

'

'

19,807,000

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

19,807,000

'

'

'

'

'

'

'

'

'

'

Unrealized Gain (Loss) on Derivatives recognized in earnings [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized Gain (Loss) on derivatives recognized in earnings

$100,000

($1,500,000)

$100,000

($1,500,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details) (USD $)	9 Months Ended
	Mar. 31, 2014	Jun. 30, 2013
Derivatives, Fair Value [Line Items]	'	'
Longest outstanding maturity for derivative contracts at the most recent balance sheet date	'15 months	'
Derivative other comprehensive income pretax	$900,000	'
Derivative, fair value, net	-800,000	200,000
Asset derivatives	'	'
Derivative assets	417,000	546,000
Liability derivatives	'	'
Derivative liabilities	-1,183,000	-353,000
Designated as Hedging Instrument [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative, notional amount	63,300,000	107,200,000
Not Designated as Hedging Instrument [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative, notional amount	25,800,000	33,600,000
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]	'	'
Asset derivatives	'	'
Derivative assets	295,000	395,000
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]	'	'
Liability derivatives	'	'
Derivative liabilities	-1,181,000	-159,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]	'	'
Asset derivatives	'	'
Derivative assets	122,000	151,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]	'	'
Liability derivatives	'	'
Derivative liabilities	($2,000)	($194,000)

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Details 2) (Foreign Exchange Forward [Member], Cash Flow Hedging [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Summary Of Hedged Derivative Instruments Impact On Results Of Operations [Abstract]	'	'	'	'
Gain (loss) recognized in OCI (effective portion)	$85	$556	($1,978)	($503)
General and Administrative Expense [Member]	'	'	'	'
Summary Of Hedged Derivative Instruments Impact On Results Of Operations [Abstract]	'	'	'	'
Gain (loss) reclassified from OCI into income (effective portion)	-520	-386	852	-121
Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)	-4	-1	-1	-1
Summary Of Non Hedged Derivative Instruments Impact On Results Of Operations [Abstract]	'	'	'	'
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	($365)	($146)	$697	$1,928

Retirement_Benefits_Details

Retirement Benefits (Details) (USD $)

Jun. 30, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Towers Watson Us [Member]

Towers Watson Us [Member]

Towers Watson Us [Member]

Towers Watson Us [Member]

Towers Watson Uk [Member]

Towers Watson Uk [Member]

Towers Watson Uk [Member]

Towers Watson Uk [Member]

North America Pension Plans [Member]

North America Pension Plans [Member]

North America Pension Plans [Member]

North America Pension Plans [Member]

Europe Pension Plans [Member]

Europe Pension Plans [Member]

Europe Pension Plans [Member]

Europe Pension Plans [Member]

Other Postretirement Benefit Plans, Defined Benefit [Member]

Other Postretirement Benefit Plans, Defined Benefit [Member]

Other Postretirement Benefit Plans, Defined Benefit [Member]

Other Postretirement Benefit Plans, Defined Benefit [Member]

German Plan [Member]

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Portion Of Pension And Opeb Plans Represented In Disclosure Portion Disclosed

98.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Portion Of Pension And Opeb Plans Represented In Disclosure Portion Not Disclosed

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service cost

'

'

'

'

'

'

'

'

'

$17,493,000

$17,731,000

$52,819,000

$53,189,000

$3,054,000

$3,074,000

$9,162,000

$9,221,000

$365,000

$441,000

$1,097,000

$1,323,000

'

Interest cost

'

'

'

'

'

'

'

'

'

35,062,000

33,854,000

105,628,000

101,566,000

10,182,000

9,182,000

30,545,000

27,545,000

2,216,000

2,197,000

6,647,000

6,590,000

'

Expected return on plan assets

'

'

'

'

'

'

'

'

'

-46,968,000

-46,586,000

-141,375,000

-139,540,000

-11,457,000

-10,168,000

-34,370,000

-30,505,000

-28,000

-33,000

-84,000

-98,000

'

Amortization of net loss

'

'

'

'

'

'

'

'

'

5,473,000

11,440,000

16,597,000

34,325,000

2,235,000

1,441,000

6,706,000

4,324,000

-436,000

83,000

-1,309,000

250,000

'

Amortization of prior service credit

'

'

'

'

'

'

'

'

'

-2,095,000

-2,094,000

-6,284,000

-6,283,000

10,000

10,000

31,000

29,000

-1,751,000

-2,051,000

-5,253,000

-6,152,000

'

Net periodic benefit cost

'

'

'

'

'

'

'

'

'

8,965,000

14,345,000

27,385,000

43,257,000

4,024,000

3,539,000

12,074,000

10,614,000

366,000

637,000

1,098,000

1,913,000

'

Employer Contributions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company contributions

'

'

'

'

'

'

'

'

'

'

'

67,000,000

'

'

'

24,600,000

'

'

'

'

'

10,100,000

Estimated future company contributions

'

'

'

'

'

'

'

'

'

'

'

5,900,000

'

'

'

13,800,000

'

'

'

'

'

'

Defined Contributions Plans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company contribution costs recognized

'

$9,900,000

$9,300,000

$22,300,000

$22,300,000

$5,200,000

$5,600,000

$15,100,000

$16,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Commitments_and_Contingen1

Debt, Commitments and Contingent Liabilities (Summary of Long-Term Debt) (Details) (USD $)

0 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

Nov. 07, 2011

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Jun. 01, 2012

Mar. 31, 2014

Mar. 31, 2014

Jun. 01, 2012

Jun. 01, 2012

Jun. 01, 2012

Jun. 01, 2012

Senior Debt Obligations [Member]

Senior Debt Obligations [Member]

Senior Debt Obligations [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Captive Insurance Companies [Member]

Other Existing Or Potential Business Obligations [Member]

Libor [Member]

Libor [Member]

Bank Base Rate [Member]

Bank Base Rate [Member]

Financial Standby Letter of Credit [Member]

Financial Standby Letter of Credit [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit covenant terms

'

'The Senior Credit Facility contains customary representations and warranties and affirmative and negative covenants. The Senior Credit Facility requires Towers Watson to maintain certain financial covenants that include a minimum Consolidated Interest Coverage Ratio and a maximum Consolidated Leverage Ratio (which terms in each case are defined in the Senior Credit Facility). In addition, the Senior Credit Facility contains restrictions on the ability of Towers Watson to, among other things, incur additional indebtedness; pay dividends; make distributions; create liens on assets; make acquisitions; dispose of property; engage in sale-leaseback transactions; engage in mergers or consolidations, liquidations and dissolutions; engage in certain transactions with affiliates; and make changes in lines of businesses.

'

'

'

'

'

'

'

'

'

'

Line of credit covenant compliance

'

'As of March 31, 2014, we were in compliance with our covenants.

'

'

'

'

'

'

'

'

'

'

Line of credit maximum borrowing capacity

$500,000,000

'

'

'

'

'

'

'

'

'

'

'

Lined of credit additional borrowing capacity

250,000,000

'

'

'

'

'

'

'

'

'

'

'

Line of credit, interest rate description

'a spread to either LIBOR or the Prime Rate

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate (percent)

'

1.93%

1.49%

1.42%

1.47%

'

'

'

'

'

'

'

Line of credit commitment fee (percent)

'

0.18%

'

'

'

'

'

'

'

'

'

'

Line of credit collateral description

'

'Towers Watson and all of its domestic subsidiaries (other than Professional Consultants Insurance Company (“PCIC”), a majority-owned captive insurance company, and Stone Mountain Insurance Company (“SMIC”), a wholly-owned captive insurance company).

'

'

'

'

'

'

'

'

'

'

Line of credit amount outstanding

'

'

'

'

'

'

21,400,000

1,400,000

'

'

'

'

Original amount borrowed

'

'

'

'

'

250,000,000

'

'

'

'

'

'

Percentage spread to base index rate

'

'

'

'

'

'

'

'

1.25%

1.75%

0.25%

0.75%

Debt periodic principal payment

'

'

'

6,250,000

'

'

'

'

'

'

'

'

Term loan

'

'

'

$231,300,000

'

'

'

'

'

'

'

'

Debt_Commitments_and_Contingen2

Debt, Commitments and Contingent Liabilities (Summary of Malpractice Insurance) (Details) (USD $)	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
			Aggregate Claims [Member]	Per Claim [Member]	S M I C [Member]	P C I C [Member]
Malpractice Insurance [Line Items]	'	'	'	'	'	'
Reinsurance coverage description	'	'	'	'	'SMIC secured $25 million of reinsurance from unaffiliated reinsurance companies in excess of the $15 million SMIC retained layer. Excess insurance attaching above the SMIC coverage is provided by various unaffiliated commercial insurance companies.	'PCIC secured reinsurance of $25 million attaching above the $25 million PCIC retained layer from unaffiliated reinsurance companies.
Malpractice insurance description	'	'	'	'	'	'Before the Merger, Watson Wyatt and Towers Perrin each obtained substantial professional liability insurance from PCIC. A limit of $50 million per claim and in the aggregate was provided by PCIC subject to a $1 million per claim self-insured retention.
Malpractice insurance continuing coverage policy description	'	'	'	'	'Towers Watson carries substantial professional liability insurance which, effective July 1, 2010, has been provided by SMIC. For the policy period beginning July 1, 2011 certain changes were made to our professional liability insurance program. These changes remain in-force for the policy periods beginning July 1, 2011 and ending July 1, 2014. Our professional liability insurance includes a $10 million aggregate self-insured retention above the $1 million self-insured retention per claim, including the cost of defending such claims. SMIC provides us with $40 million of coverage per claim and in the aggregate, above the retentions, including the cost of defending such claims.	'
Captive insurance reinsurance coverage	'	'	'	'	$25,000,000	$25,000,000
Malpractice insurance deductible	'	'	10,000,000	1,000,000	'	1,000,000
Malpractice insurance, maximum coverage per incident	'	'	'	'	40,000,000	50,000,000
Captive insurance coverage amount	'	'	'	'	15,000,000	25,000,000
Malpractice insurance, coverage floor	'	'	'	'	25,000,000	'
Malpractice insurance percentage of ownership in captive insurer	'	'	'	'	'	72.86%
Professional liability claims reserve incurred by not reported	$182,300,000	$184,100,000	'	'	'	'

Debt_Commitments_and_Contingen3

Debt, Commitments and Contingent Liabilities (Summary of Litigation) (Details) (USD $)

0 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

9 Months Ended

7-May-13

Dec. 09, 2009

Nov. 05, 2009

Mar. 31, 2014

Dec. 17, 2009

Jan. 15, 2010

Mar. 31, 2014

Jan. 26, 2011

Feb. 25, 2009

Mar. 31, 2014

Feb. 28, 2014

Mar. 27, 2014

Dugan Action [Member]

Dugan Action [Member]

Dugan Action [Member]

Dugan Action [Member]

Allen Action [Member]

Pao Action [Member]

Pao Action [Member]

Acument [Member]

Acument [Member]

Acument [Member]

Acument [Member]

Acument [Member]

Plaintiff [Member]

Towers Watson [Member]

Loss Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Malpractice loss contingency description

'

'

'

'

'

'

'Pursuant to the Towers Perrin Bylaws in effect at the time of their separations, the Towers Perrin shares held by all plaintiffs were redeemed by Towers Perrin at book value when these individuals separated from employment. The complaints alleged variously that there was a promise that Towers Perrin would remain privately owned in perpetuity and an implied or actual promise that in the event of a change to public ownership plaintiffs would receive compensation. Plaintiffs alleged that by agreeing to sell their shares back to Towers Perrin at book value upon separation, they and other members of the putative classes relied upon these alleged promises, which they claim were breached as a result of the consummation of the Merger between Watson Wyatt and Towers Perrin. The complaints all asserted claims for breach of contract, breach of express trust, breach of fiduciary duty, promissory estoppel, quasi-contract/unjust enrichment, and constructive trust, and seek equitable relief including an accounting, disgorgement, rescission and/or restitution, and the imposition of a constructive trust.

'

'

'

'

'

Period of loss occurrence

'

'

'

'

'

'

'

'December 1, 2007 and April 30, 2010

'

'

'

'

Malpractice loss contingency description investments lost

'

'

'

'

'

'

'

'In connection with those services, WWIC recommended an investment in the Westridge Funds. In July 2008, Acument made a $47.0 million investment in the Westridge Funds. During the period December 1, 2008 through January 22, 2009, Acument made additional investments of $9.5 million, bringing the aggregate investment of the Plan’s assets in the Westridge Funds to $56.5 million.

'

'

'

'

Lawsuit filing date

'

'

'2009-11-05

'

'2009-12-17

'2010-01-15

'

'2011-01-26

'

'

'

'

Name of plaintiff

'

'

'"Dugan Action"

'

'"Allen Action"

'"Pao Action"

'

'Acument Global Technologies, Inc

'

'

'

'

Damages sought, value

'

$800,000,000

'

'

'

'

'

'

'

'

'

'

Terms of settlement agreement

'

'

'

'During the mediation session held on May 7, 2013, the parties reached agreement on settlement terms that include payment of an aggregate $10 million to an agreed settlement class (including all persons in the classes as defined in the respective complaints in the Dugan Action and the Pao Action, plus additional former Towers Perrin shareholders who separated from Towers Perrin between January 1971 and June 2005) estimated to potentially include more than 1,000 former Towers Perrin shareholders, which payment would also cover legal fees of plaintiffs’ attorneys, as determined by the court, and expenses incurred to administer the settlement.The cases were then returned to the district court for consideration of the proposed settlement. On September 24, 2013, the court preliminarily certified the settlement class and preliminarily approved the parties’ proposed settlement.

'

'

'

'

'

'

'

'

Proposed settlement amount

10,000,000

'

'

'

'

'

'

'

'

'

'

'

Misappropriation estimate

'

'

'

'

'

'

'

'

553,000,000

'

'

'

Recovery to date

'

'

'

'

'

'

'

'

'

39,700,000

'

'

Minimum possible loss

'

'

'

'

'

'

'

'

'

'

38,000,000

'

Maximum possible loss

'

'

'

'

'

'

'

'

'

'

$86,000,000

$16,600,000

Variable_Interest_Entities_Det

Variable Interest Entities (Details) (USD $)	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013
Variable Interest Entities [Abstract]	'	'	'
Assets under management	$1,800,000,000	$1,800,000,000	'
Increase (Decrease) in Temporary Equity [Roll Forward]	'	'	'
Balance as of June 30, 2013	'	0	'
Subscriptions of non-controlling interest holders in consolidated VIEs	'	332,722,000	'
Mark-to-market gains on investments held by consolidated VIEs	3,000,000	6,297,000	'
Deconsolidation of investment funds (see Note 9)	'	-339,019,000	0
Balance as of March 31, 2014	$0	$0	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income/(Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	($299,464)	'
Other comprehensive income/(loss) before non-controlling interests	1,818	-99,633	96,276	-68,773
After tax - Accumulated OCI as of	-202,553	'	-202,553	'
Foreign currency translation	'	'	'	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	-131,096	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	88,573	'
After tax - Amounts reclassified from accumulated other comprehensive income	'	'	0	'
Other comprehensive income/(loss) before non-controlling interests	'	'	88,573	'
After tax - Accumulated OCI as of	-42,523	'	-42,523	'
Hedge effectiveness	'	'	'	'
Before tax - AOCI	'	'	'	'
Before tax - Accumulated OCI as of	'	'	237	'
Before tax - Other comprehensive income/(loss) before reclassifications	'	'	-1,978	'
Before tax - Amounts reclassified from accumulated other comprehensive income	'	'	852	'
Before tax - Net current-period other comprehensive income	'	'	-1,126	'
Before tax - Accumulated OCI as of	-889	'	-889	'
Tax - AOCI	'	'	'	'
Tax - Accumulated OCI as of	'	'	-105	'
Tax - Other comprehensive income/(loss) before reclassifications	'	'	681	'
Tax - Amounts reclassified from accumulated other comprehensive income	'	'	-293	'
Tax - Net current-period other comprehensive income	'	'	388	'
Tax - Accumulated OCI as of	283	'	283	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	132	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	-1,297	'
After tax - Amounts reclassified from accumulated other comprehensive income	'	'	559	'
Other comprehensive income/(loss) before non-controlling interests	'	'	-738	'
After tax - Accumulated OCI as of	-606	'	-606	'
Available-for-sale securities	'	'	'	'
Before tax - AOCI	'	'	'	'
Before tax - Accumulated OCI as of	'	'	547	'
Before tax - Other comprehensive income/(loss) before reclassifications	'	'	457	'
Before tax - Amounts reclassified from accumulated other comprehensive income	'	'	-761	'
Before tax - Net current-period other comprehensive income	'	'	-304	'
Before tax - Accumulated OCI as of	243	'	243	'
Tax - AOCI	'	'	'	'
Tax - Accumulated OCI as of	'	'	-134	'
Tax - Other comprehensive income/(loss) before reclassifications	'	'	-130	'
Tax - Amounts reclassified from accumulated other comprehensive income	'	'	173	'
Tax - Net current-period other comprehensive income	'	'	43	'
Tax - Accumulated OCI as of	-91	'	-91	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	413	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	327	'
After tax - Amounts reclassified from accumulated other comprehensive income	'	'	-588	'
Other comprehensive income/(loss) before non-controlling interests	'	'	-261	'
After tax - Accumulated OCI as of	152	'	152	'
Defined pension and post-retirement benefit costs	'	'	'	'
Before tax - AOCI	'	'	'	'
Before tax - Accumulated OCI as of	'	'	-233,817	'
Before tax - Other comprehensive income/(loss) before reclassifications	'	'	0	'
Before tax - Amounts reclassified from accumulated other comprehensive income	'	'	11,942	'
Before tax - Net current-period other comprehensive income	'	'	11,942	'
Before tax - Accumulated OCI as of	-221,875	'	-221,875	'
Tax - AOCI	'	'	'	'
Tax - Accumulated OCI as of	'	'	64,904	'
Tax - Other comprehensive income/(loss) before reclassifications	'	'	0	'
Tax - Amounts reclassified from accumulated other comprehensive income	'	'	-2,605	'
Tax - Net current-period other comprehensive income	'	'	-2,605	'
Tax - Accumulated OCI as of	62,299	'	62,299	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	-168,913	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	0	'
After tax - Amounts reclassified from accumulated other comprehensive income	'	'	9,337	'
Other comprehensive income/(loss) before non-controlling interests	'	'	9,337	'
After tax - Accumulated OCI as of	($159,576)	'	($159,576)	'

Restricted_Stock_Details

Restricted Stock (Details) (EMB [Member], USD $)	0 Months Ended
	Jan. 31, 2011
Common Class B-3 [Member]	'
Business Acquisition [Line Items]	'
Shares issued as consideration for purchase of EMB (in shares)	113,858
Common stock, par value (in dollars per share)	$0.01
Common Class B-4 [Member]	'
Business Acquisition [Line Items]	'
Shares issued as consideration for purchase of EMB (in shares)	113,858

Restricted_Stock_Details1

Restricted Stock (Details1) (Common Class B-4 [Member])	0 Months Ended	9 Months Ended
	Jan. 02, 2014	Mar. 31, 2014
Common Class B-4 [Member]	'	'
Conversion of Stock [Line Items]	'	'
Acceleration of Class B shares to Class A shares, number of shares	5,374,070	'
Conversion date of Class B shares to Class A shares	'	1-Jan-14

Restricted_Stock_Details2

Restricted Stock (Details2) (USD $)	3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2010	Mar. 31, 2013
				Towers Perrin Merger [Member]	Towers Perrin Merger [Member]	Towers Perrin Merger [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Percentage of Restricted Class A shares transferred in the Merger	'	'	'	'	10.00%	'
Restricted Class A shares granted as consideration (in shares)	'	'	'	'	4,248,984	'
Compensation expense	'	'	'	($5.30)	'	$8
Discontinued operations - compensation expense	$0.10	$1.20	$0.40	'	'	$1
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Assumed Forfeited Percentage	'	'	'	'	10.00%	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Actual Forfeited Percentage	'	'	'	11.00%	'	'

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

In Millions, except Share data, unless otherwise specified

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2012

Jun. 30, 2012

Jun. 30, 2012

Aug. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Sep. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Sep. 30, 2011

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2010

Nov. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

2014 LTIP

2014 LTIP

2014 LTIP

2014 LTIP

2014 LTIP

2013 LTIP

2013 LTIP

2013 LTIP

2013 LTIP

2012 LTIP

2012 LTIP

2012 LTIP

2012 LTIP

2012 LTIP

2012 LTIP

2012 LTIP

2014 ES LTIP

2014 ES LTIP

2014 ES LTIP

2013 SEP

2013 SEP

2013 SEP

2012 SEP

2012 SEP

2012 SEP

2012 SEP

2012 SEP

2011 SEP

2011 SEP

2011 SEP

2011 SEP

2011 SEP

Outside Directors [Member]

Outside Directors [Member]

Outside Directors [Member]

Outside Directors [Member]

Outside Directors [Member]

Outside Directors [Member]

Outside Directors [Member]

Liazon RSUs [Member]

Liazon RSUs [Member]

Liazon RSUs [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Description of Restricted Stock Units

'

'RSUs are designed to provide us an opportunity to offer our long-term incentive program (LTIP) and to provide key executives with a long-term stake in our success. RSUs are notional, non-voting units of measurement based on our common stock.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted Stock Units granted during the period (in shares)

'

'

'

2,704

62,651

'

'

'

'

'

'

121,075

'

'

'

'

86,188

'

'

30,192

'

'

'

131,286

'

'

'

147,503

'

'

'

'

577,191

'

'

'

10,251

'

16,027

'

'

22,149

70,533

'

'

Restricted Stock Units vested in the period (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

288,595

'

'

'

'

'

'

'

'

'

'

'

'

Restricted Stock Units, balance not yet vested (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

288,595

'

'

'

'

'

'

'

'

'

'

'

'

Closing stock price on date of grant (in dollars per share)

'

'

'

'

'

'

$110.70

$105.90

'

$54.59

'

$54.59

'

'

'

'

'

$63.94

$63.73

$81.73

'

'

'

$91.43

'

'

'

$53.93

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeiture rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

'

'

'

5.00%

'

'

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

Vested Stock Based Compensation Awards Acquired Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5.70

'

'

Unvested Stock Based Compensation Awards Acquired Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.1

2.1

Compensation expense

'

'

'

-1.1

'

-3.8

'

'

0.4

-1.4

-0.6

-4.3

0.5

-0.3

1

-1.8

'

'

'

'

-0.4

-1.1

-1.6

'

-5

-0.5

-1.2

'

-1.5

-3.5

-0.4

-1.1

'

-1.3

-3.3

-0.1

'

-0.1

'

-0.8

-0.9

'

'

-0.4

-0.7

Discontinued operations - compensation expense

$0.10

$1.20

$0.40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ShareBased_Compensation_Detail1

Share-Based Compensation (Details 1) (USD $)	1 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	1 Months Ended
In Millions, except Share data, unless otherwise specified	31-May-12	31-May-12	31-May-12	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Nov. 30, 2013
		Extend Health Vested Options [Member]	Extend Health Unvested Options [Member]	Extend Health Unvested Options [Member]	Extend Health Unvested Options [Member]	Extend Health Unvested Options [Member]	Extend Health Unvested Options [Member]	Liazon Unvested Options [Member]	Liazon Unvested Options [Member]	Liazon Vested Options [Member]
Stock Options Explanatory Disclosures [Line Items]	'	'	'	'	'	'	'	'	'	'
Options granted previously and assumed by a business acquirer	377,614	'	'	'	'	'	'	'	'	37,162
Fair value of vested stock options acquired	'	$11.20	$7.90	'	'	'	'	$1.70	$1.70	$2.20
Forfeiture rate	'	'	10.00%	'	'	'	'	'	'	'
Compensation expense	'	'	'	$0.30	$1.10	$1.20	$5	$0.30	$0.40	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Income Tax Expense (Benefit), Continuing Operations [Abstract]	'	'	'	'
Income Tax Expense (Benefit)	$39,231,000	$35,254,000	$96,322,000	$99,649,000
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]	'	'	'	'
Effective Income Tax Rate, Continuing Operations	'	'	25.70%	31.90%
Uncertain tax positions tax rate impact	'	'	-4.60%	'
Change in tax rate - tax rate impact	'	'	-1.00%	'
Income Tax Uncertainties [Abstract]	'	'	'	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	5,000,000	'	5,000,000	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	$11,800,000	'	$11,800,000	'

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	$876,919	$856,420	$2,519,264	$2,500,929
Net operating income	254,087	258,557	693,296	714,728
Benefits	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	527,414	523,489	1,471,780	1,500,035
Net operating income	175,129	184,304	461,016	505,975
Risk and Financial Services	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	174,382	177,396	477,343	499,301
Net operating income	53,047	46,426	109,976	110,950
Talent and Rewards	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	127,572	124,914	451,464	441,334
Net operating income	11,558	13,179	108,718	99,048
Exchange Solutions	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	47,551	30,621	118,677	60,259
Net operating income	$14,353	$14,648	$13,586	($1,245)

Segment_Information_Details_1

Segment Information (Details 1) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Revenue:	'	'	'	'
Total segment revenue	$876,919	$856,420	$2,519,264	$2,500,929
Reimbursable expenses and other	27,914	36,557	83,663	96,304
Revenue	904,833	892,977	2,602,927	2,597,233
Net Operating Income:	'	'	'	'
Total segment net operating income	254,087	258,557	693,296	714,728
Differences in allocation methods	-6,885	-5,010	9,970	984
Amortization of intangibles	-19,380	-18,955	-56,963	-57,777
Transaction and integration expenses	-241	-12,328	-1,049	-30,753
Stock-based compensation	-2,362	1,305	-7,707	-16,523
Discretionary compensation	-75,712	-95,459	-225,919	-266,241
Payroll tax on discretionary compensation	-5,335	-5,663	-13,978	-15,347
Other, net	-5,749	-1,190	-28,380	-14,121
Income from operations	$138,423	$121,257	$369,270	$314,950

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Basic EPS	'	'	'	'
Income from continuing operations	$101,913	$83,145	$277,985	$212,380
Less: Income (loss) attributable to non-controlling interests	3,346	-71	7,057	-2,695
Income from continuing operations attributable to common stockholders	98,567	83,216	270,928	215,075
Less: Income allocated to participating securities	0	0	0	3,289
Income from continuing operations attributable to common stockholders	$98,567	$83,216	$270,928	$211,786
Weighted average shares of common stock, basic (in shares)	70,447	70,530	70,685	71,094
Shares	'	'	'	69,977
Per share amount (in dollars per share)	$1.40	$1.18	$3.83	$3.03
Diluted EPS	'	'	'	'
Share-based compensation awards	437	546	362	545
Shares	70,884	71,076	71,047	70,522
Per share amount (in dollars per share)	$1.39	$1.17	$3.81	$3