Towers Watson & Co. 10-Q 7 Feb 14 2014 Q2 Quarterly report Financial data

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Condensed Consolidated Statements of Operations	'	'	'	'
Revenue	$888,155,000	$911,021,000	$1,698,094,000	$1,704,256,000
Costs of providing services:	'	'	'	'
Salaries and employee benefits	526,731,000	556,179,000	1,027,150,000	1,048,259,000
Professional and subcontracted services	69,074,000	71,168,000	130,474,000	126,843,000
Occupancy	34,782,000	34,669,000	68,327,000	72,450,000
General and administrative expenses	85,038,000	80,504,000	153,807,000	156,782,000
Depreciation and amortization	43,296,000	44,930,000	86,681,000	87,804,000
Transaction and integration expenses	808,000	9,152,000	808,000	18,425,000
Cost of Services	759,729,000	796,602,000	1,467,247,000	1,510,563,000
Income from operations	128,426,000	114,419,000	230,847,000	193,693,000
Loss from affiliates	0	0	0	-56,000
Interest income	560,000	811,000	1,089,000	1,505,000
Interest expense	-2,027,000	-3,605,000	-4,463,000	-6,560,000
Other non-operating income	5,652,000	2,696,000	5,690,000	5,048,000
Income from continuing operations before income taxes	132,611,000	114,321,000	233,163,000	193,630,000
Provision for income taxes	42,283,000	36,126,000	57,091,000	64,395,000
Income from continuing operations	90,328,000	78,195,000	176,072,000	129,235,000
(Loss) income from discontinued operations, net of tax of $38,286, $730, $40,837 and $4,537	-403,000	2,412,000	2,041,000	9,158,000
Net income before non-controlling interests	89,925,000	80,607,000	178,113,000	138,393,000
Less: Income (loss) attributable to non-controlling interests	3,737,000	-1,683,000	3,711,000	-2,624,000
Net income (attributable to common stockholders)	$86,188,000	$82,290,000	$174,402,000	$141,017,000
Earnings per share:	'	'	'	'
Basic earnings per share - Income from continuing operations	$1.22	$1.12	$2.43	$1.85
Basic earnings per share - Income from discontinued operations	$0	$0.03	$0.03	$0.13
Basic earnings per share - Net income	$1.22	$1.15	$2.46	$1.98
Diluted earnings per share - Income from continuing operations	$1.21	$1.11	$2.42	$1.83
Diluted earnings per share - Income from discontinued operations	$0	$0.04	$0.03	$0.13
Diluted earnings per share - Net income	$1.21	$1.15	$2.45	$1.96
Weighted average shares of common stock, basic	70,809,000	71,257,000	70,805,000	71,376,000
Weighted average shares of common stock, diluted	71,213,000	71,847,000	71,130,000	71,920,000

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Condensed Consolidated Statements of Operations	'	'	'	'
Discontinued operations, tax provision	$38,286,000	$730,000	$40,837,000	$4,537,000

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Condensed Consolidated Statements of Comprehensive Income	'	'	'	'
Net income before non-controlling interests	$89,925,000	$80,607,000	$178,113,000	$138,393,000
Other comprehensive income (loss), net of tax:	'	'	'	'
Foreign currency translation	17,825,000	1,864,000	88,735,000	48,723,000
Defined pension and post-retirement benefit costs	3,419,000	-9,383,000	6,531,000	-17,123,000
Hedge effectiveness	-12,000	-246,000	-1,030,000	-796,000
Available-for-sale securities	36,000	-108,000	222,000	56,000
Other comprehensive income (loss) before non-controlling interests	21,268,000	-7,873,000	94,458,000	30,860,000
Comprehensive income before non-controlling interests	111,193,000	72,734,000	272,571,000	169,253,000
Comprehensive income/(loss) attributable to non-controlling interest	3,321,000	-1,612,000	3,097,000	-1,756,000
Comprehensive income (attributable to common stockholders)	$107,872,000	$74,346,000	$269,474,000	$171,009,000

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Jun. 30, 2013
Assets	'	'
Cash and cash equivalents	$511,943,000	$532,805,000
Fiduciary assets	12,925,000	148,414,000
Short-term investments	16,879,000	56,645,000
Receivables from clients:	'	'
Billed, net of allowances of $9,833 and $12,768	511,871,000	519,580,000
Unbilled, at estimated net realizable value	276,797,000	306,258,000
Receivables, Net, Current	788,668,000	825,838,000
Other current assets	152,492,000	148,519,000
Total current assets	1,482,907,000	1,712,221,000
Fixed assets, net	363,258,000	346,915,000
Deferred income taxes	80,761,000	86,313,000
Goodwill	2,312,335,000	2,218,935,000
Intangible assets, net	655,425,000	687,758,000
Investments of consolidated variable interest entity	277,070,000	'
Other assets	318,015,000	279,935,000
Total Assets	5,489,771,000	5,332,077,000
Liabilities	'	'
Accounts payable, accrued liabilities and deferred income	340,337,000	351,648,000
Employee-related liabilities	352,943,000	560,831,000
Fiduciary liabilities	12,925,000	148,414,000
Term loan - current	25,000,000	25,000,000
Other current liabilities	58,487,000	26,980,000
Total current liabilities	789,692,000	1,112,873,000
Revolving credit facility	35,000,000	0
Term loan	212,500,000	225,000,000
Accrued retirement benefits and other employee-related liabilities	679,857,000	771,429,000
Professional liability claims reserve	256,042,000	251,191,000
Other noncurrent liabilities	268,011,000	226,750,000
Total Liabilities	2,241,102,000	2,587,243,000
Commitments and contingencies	'	'
Statement [Line Items]	'	'
Common Stock value	746,000	746,000
Additional paid-in capital	1,851,940,000	1,850,448,000
Treasury stock, at cost - 3,929,281 and 3,836,338 shares	-248,797,000	-221,643,000
Retained earnings	1,558,310,000	1,394,407,000
Accumulated other comprehensive loss	-204,392,000	-299,464,000
Total Stockholders' Equity	2,957,807,000	2,724,494,000
Non-controlling interest	290,862,000	20,340,000
Total Equity	3,248,669,000	2,744,834,000
Total Liabilities and Total Equity	5,489,771,000	5,332,077,000
Class A Common Stock - $0.01 par value: 300,000,000 shares authorized; 69,178,097 and 69,178,097 issued and 65,248,816 and 65,341,759 outstanding [Member]	'	'
Statement [Line Items]	'	'
Common Stock value	692,000	692,000
Class B Common Stock - $0.01 par value: 93,500,000 shares authorized; 5,374,070 and 5,374,070 issued and 5,374,070 and 5,374,070 outstanding [Member]	'	'
Statement [Line Items]	'	'
Common Stock value	$54,000	$54,000

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2013	Jun. 30, 2013
Treasury Stock, Shares	3,929,281	3,836,338
Allowance for Doubtful Accounts Receivable, Current	$9,833,000	$12,768,000
Common Class A [Member]	'	'
Common Stock, Par or Stated Value Per Share	$0.01	$0.01
Common Stock, Shares, Authorized	300,000,000	300,000,000
Common Stock, Shares, Issued	69,178,097	69,178,097
Common Stock, Shares, Outstanding	65,248,816	65,341,759
Common Class B [Member]	'	'
Common Stock, Par or Stated Value Per Share	$0.01	$0.01
Common Stock, Shares, Authorized	93,500,000	93,500,000
Common Stock, Shares, Issued	5,374,070	5,374,070
Common Stock, Shares, Outstanding	5,374,070	5,374,070

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows (used in)/from operating activities:	'	'
Net income before non-controlling interests	$178,113,000	$138,393,000
Adjustments to reconcile net income to net cash (used in)/from operating activities:	'	'
Provision for doubtful receivables from clients	566,000	7,824,000
Depreciation	49,097,000	49,380,000
Amortization of intangible assets	38,022,000	39,892,000
Gain on sale of discontinued operations, pretax	18,480,000	'
Provision for deferred income taxes	51,276,000	27,936,000
Stock-based compensation	11,509,000	23,260,000
Other, net	-1,619,000	-2,651,000
Changes in operating assets and liabilities	'	'
Receivables from clients	47,340,000	-19,819,000
Fiduciary assets	110,743,000	53,063,000
Other current assets	-858,000	-18,865,000
Other noncurrent assets	-5,139,000	589,000
Accounts payable, accrued liabilities and deferred income	-44,160,000	22,717,000
Employee-related liabilities	-224,683,000	-144,650,000
Fiduciary liabilities	-110,743,000	-53,063,000
Accrued retirement benefits and other employee-related liabilities	-104,386,000	-111,077,000
Professional liability claims reserves	2,887,000	-8,996,000
Other current liabilities	-762,000	1,559,000
Other noncurrent liabilities	-256,000	9,099,000
Income tax related accounts	1,599,000	6,780,000
Cash flows (used in)/from operating activities	-19,934,000	21,371,000
Cash flows used in investing activities:	'	'
Cash paid for business acquisitions	-210,814,000	-185,000
Cash transferred with discontinued operations	25,066,000	'
Proceeds from discontinued operations	256,953,000	3,682,000
Cash acquired from business acquisitions	3,949,000	'
Fixed assets and software for internal use	-38,566,000	-54,493,000
Purchases of investments of consolidated variable interest entity	-50,510,000	'
Capitalized software costs	-23,327,000	-29,007,000
Purchases of investments	-31,779,000	-18,083,000
Sales and redemptions of investments	56,580,000	27,670,000
Cash flows used in investing activities	-62,580,000	-70,416,000
Cash flows from/(used in) financing activities:	'	'
Borrowings under credit facility	144,100,000	376,600,000
Repayments under credit facility	-109,100,000	-309,600,000
Repayments of notes payable	-12,500,000	0
Cash received from consolidated variable interest entity	50,510,000	'
Contingent retention liability	21,746,000	'
Cash paid on retention liabilities	-1,939,000	'
Dividends paid	-613,000	-48,715,000
Repurchases of common stock	-40,533,000	-36,531,000
Payroll tax payments on vested shares	-7,457,000	-1,750,000
Excess tax benefit	9,800,000	0
Cash flows from/(used in) financing activities	54,014,000	-19,996,000
Effect of exchange rates on cash	7,638,000	11,648,000
Decrease in cash and cash equivalents	-20,862,000	-57,393,000
Cash and cash equivalents at beginning of period	532,805,000	478,179,000
Cash and cash equivalents at end of period	511,943,000	420,786,000
Supplemental disclosures:	'	'
Cash paid for interest	1,931,000	4,460,000
Cash paid for income taxes, net of refunds	40,814,000	32,904,000
Common stock withheld for taxes associated with vesting of Restricted A Shares	7,457,000	1,750,000
Transfers into consolidated investment funds	$223,212,000	'

Condensed_Consolidated_Stateme4

Condensed Consolidated Statement 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]
Balance as of at Jun. 30, 2012	$2,457,317,000	$635,000	$110,000	$1,833,799,000	($168,901,000)	$1,117,622,000	($350,745,000)	$24,797,000
Shares outstanding as of at Jun. 30, 2012	'	63,522,000	11,036,000	'	'	'	'	'
Net income	138,393,000	'	'	'	'	141,017,000	'	-2,624,000
Other comprehensive income/(loss)	30,860,000	'	'	'	'	'	29,992,000	868,000
Repurchases of common stock	-36,531,000	'	'	'	-36,531,000	'	'	'
Shares received for employee taxes upon vesting of restricted stock units, value	-1,750,000	'	'	'	-1,750,000	'	'	'
Exercises of stock options	301,000	'	'	-2,178,000	2,479,000	'	'	'
Vesting of restricted stock units, value	-1,926,000	'	'	-2,913,000	987,000	'	'	'
Vesting of restricted stock units, shares	'	-91,000	'	'	'	'	'	'
Class A Common Stock:	'	'	'	'	'	'	'	'
Cash dividends declared	-42,588,000	'	'	'	'	-42,588,000	'	'
Stock-based compensation	23,260,000	'	'	23,260,000	'	'	'	'
Balance as of at Dec. 31, 2012	2,567,336,000	635,000	110,000	1,851,968,000	-203,716,000	1,216,051,000	-320,753,000	23,041,000
Shares outstanding as of at Dec. 31, 2012	'	63,431,000	11,036,000	'	'	'	'	'
Balance as of at Jun. 30, 2013	2,744,834,000	692,000	54,000	1,850,448,000	-221,643,000	1,394,407,000	-299,464,000	20,340,000
Shares outstanding as of at Jun. 30, 2013	'	69,178,000	5,374,000	'	'	'	'	'
Net income	178,113,000	'	'	'	'	174,402,000	'	3,711,000
Other comprehensive income/(loss)	94,458,000	'	'	'	'	'	95,072,000	-614,000
Repurchases of common stock	-40,533,000	'	'	'	-40,533,000	'	'	'
Shares received for employee taxes upon vesting of restricted stock units, value	-7,457,000	'	'	'	-7,457,000	'	'	'
Exercises of stock options	465,000	'	'	-3,443,000	3,908,000	'	'	'
Vesting of restricted stock units, value	-7,200,000	'	'	-24,128,000	16,928,000	'	'	'
Acquisitions	420,000	'	'	6,717,000	'	'	'	-6,297,000
Redeemable non-controlling interest from consolidated variable interest entity	273,722,000	'	'	'	'	'	'	273,722,000
Class A Common Stock:	'	'	'	'	'	'	'	'
Cash dividends declared	-10,499,000	'	'	'	'	-10,499,000	'	'
Excess tax benefits	9,800,000	'	'	'	'	9,800,000	'	'
Stock-based compensation	12,546,000	'	'	'	'	12,546,000	'	'
Balance as of at Dec. 31, 2013	$3,248,669,000	$692,000	$54,000	$1,851,940,000	($248,797,000)	$1,558,310,000	($204,392,000)	$290,862,000
Shares outstanding as of at Dec. 31, 2013	'	69,178,000	5,374,000	'	'	'	'	'

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Dec. 31, 2013	Jan. 29, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Document Period End Date	31-Dec-13	'
Amendment Flag	'false	'
Document Fiscal Period Focus	'Q2	'
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.	'
Statement [Line Items]	'	'
Entity Common Stock, Shares Outstanding	'	70,526,630

Organization_and_Basis_of_Pres

Organization and Basis of Presentation	6 Months Ended
	Dec. 31, 2013
Organization and Basis of Presentation [Abstract]	'
Organization and Basis of Presentation	'
	Note 1 — 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 six months ended December 31, 2013 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.

Acquisitions_and_Divestitures

Acquisitions and Divestitures	6 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Group [Abstract]	'
Divestitures	'
	Note 2 —Acquisitions and Divestitures.
	Acquisition
	Our acquisition in the second quarter of fiscal 2014 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. 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. During the second quarter of fiscal 2014, we recorded the tangible assets received and liabilities assumed of $3.7 million and a deferred tax asset of $13.1 million. Management is in the process of determining the fair value of any intangible assets assumed and plans to finalize this assessment in the third quarter of fiscal 2014. We determined that total consideration transferred was $211.2 million and recorded $194.4 million of preliminary goodwill related to the acquisition of Liazon. However, the assessment of the fair value of tangible and intangible assets and deferred taxes separate from goodwill have not been finalized.
	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 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 Accounting Standards Codification 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 was 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 six months ended December 31, 2013 and 2012, respectively:
			Three months ended				Six months ended
			December 31,				December 31,
			2013		2012		2013		2012
		Revenue from discontinued operations	$	22,564	$	35,224	$	63,762	$	76,237
		Income from discontinued operations before taxes		9,894		3,142		24,398		13,695
		Tax expense on discontinued operations		3,692		730		8,801		4,537
		Net income from discontinued operations		6,202		2,412		15,597		9,158
		Gain from sale of discontinued operations		27,989		-		18,480		-
		Tax expense on gain from sale of discontinued operations		34,594		-		32,036		-
		Net loss from sale of discontinued operations		-6,605		-		-13,556		-
		Total net (loss)/income from discontinued operations	$	-403	$	2,412	$	2,041	$	9,158
	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 are expected to be finalized during the Company's third 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 December 31, 2013 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 $212.4 million. Total transaction and integration costs were approximately $6.3 million. We expect to finalize the completion accounts and the purchase price adjustments during the third quarter of fiscal 2014. Our pre-tax preliminary gain on the sale is $18.5 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	6 Months Ended
	Dec. 31, 2013
Investment [Abstract]	'
Investments	'
	Note 3 — Investments.
	We hold available-for-sale investments comprised of fixed income securities, equity securities and mutual funds / exchange-traded funds (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 or held-to-maturity securities as of December 31, 2013 and June 30, 2013. As of December 31, 2013, investments related to our variable interest entities are consolidated on the balance sheet, but are excluded from this disclosure. See Note 9 – Variable Interest Entities for additional information around the consolidation of these investments.
	Additional information on available-for-sale security balances is provided in the following table as of December 31, 2013 and June 30, 2013:
		31-Dec-13								30-Jun-13
		Amortized		Unrealized		Unrealized		Estimated		Amortized		Unrealized		Unrealized		Estimated
		Cost		Gains		Losses		Fair Value		Cost		Gains		Losses		Fair Value
	Fixed income securities (a)	$	-	$	-	$	-	$	-	$	56,602	$	15	$	-2	$	56,615
	Equity securities (a)		91		10		-		101		853		476		-1		1,328
	Mutual funds and exchange-traded funds (b)		41,637		1,663		-8		43,292		26,666		14		-97		26,583
	Classified as short-term investments on the condensed consolidated balance sheet as of December 31, 2013 and June 30, 2013, respectively. 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 investments and therefore, are not included in the table above.
	Classified as other assets on the condensed consolidated balance sheet as of December 31, 2013 and June 30, 2013, respectively.
	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 six months ended December 31, 2013 were $58.2 million, resulting in immaterial realized gains. For the six months ended December 31, 2013, $1.6 million of the 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 six months ended December 31, 2012 were $26.5 million, resulting in no realized gains/losses.
	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. The aggregate fair value of investments with unrealized losses as of December 31, 2013 and June 30, 2013 were $10.0 million and $36.3 million, respectively.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	6 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets [Abstract]	'
Goodwill and Intangible Assets	'
	Note 4 — Goodwill and Intangible Assets.
	The components of goodwill and intangible assets are outlined below for the six months ended December 31, 2013:
						Risk and
						Financial			Talent and			Exchange
			Benefits			Services			Rewards			Solutions			All Other		Total
		Balance as of June 30, 2013	$	1,233,272		$	534,150		$	108,850		$	341,449		$	1,214	$	2,218,935
		Goodwill related to acquisitions		-			-			-			194,384			-		194,384
		Goodwill related to disposals		-			-167,822			-			-			-		-167,822
		Translation adjustment		43,243			20,087			3,508			-			-		66,838
		Balance as of December 31, 2013	$	1,276,515		$	386,415		$	112,358		$	535,833		$	1,214	$	2,312,335
	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 $194.4 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 December 31, 2013. We have not yet finalized the preliminary assessment of the fair value of tangible assets and intangible assets separate from goodwill, but we expect to do so in the third quarter of fiscal year 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 six months ended December 31, 2013:
				Customer			Core/			Favorable
				related			developed			lease
				intangible			technology			agreements			Total
		Balance as of June 30, 2013		$	246,247		$	69,515		$	3,565		$	319,327
		Amortization			-23,028			-14,994			-474			-38,496
		Intangibles related to disposal			-8,254			-			-			-8,254
		Translation adjustment			5,534			675			-1			6,208
		Balance as of December 31, 2013		$	220,499		$	55,196		$	3,090		$	278,785
	For the three and six months ended December 31, 2013, we recorded $18.7 million and $38.0 million, respectively, of amortization related to our intangible assets, exclusive of favorable lease agreements. For the three and six months ended December 31, 2012, we recorded $20.3 million and $39.9 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 six months ended December 31, 2013, we recorded $1.4 million and $2.3 million, respectively, of amortization expense and an additional $1.7 million and $3.8 million of amortization for the three and six months ended December 31, 2012, respectively.
	Our indefinite-lived non-amortizable intangible assets consist of acquired trade names. The carrying value of these assets were $376.6 million and $368.4 million as of December 31, 2013 and June 30, 2013, respectively. The change during the period was due to foreign currency translation.
	Our acquired unfavorable lease liabilities were $11.9 million and $13.5 million as of December 31, 2013 and June 30, 2013, respectively, and are recorded in the other noncurrent liabilities in the condensed consolidated balance sheet. The change for the six months ended December 31, 2013 was comprised of a reduction to rent expense of $1.6 million.
	The following table reflects the carrying value of finite-lived intangible assets and liabilities as of December 31, 2013 and June 30, 2013:
			As of December 31, 2013						As of June 30, 2013
			Gross						Gross
			Carrying			Accumulated			Carrying			Accumulated
			Amount			Amortization			Amount			Amortization
		Finite-lived intangible assets and liabilities:
		Trade name	$	370			370		$	370			370
		Customer related intangibles		387,111			166,612			390,027			143,780
		Core/developed technology		141,177			85,981			164,762			95,247
		Favorable lease agreements		6,493			3,403			6,496			2,931
		Total finite-lived intangible assets	$	535,151		$	256,366		$	561,655		$	242,328
		Unfavorable lease agreements		26,021			14,162			25,591			12,122
		Total finite-lived intangible liabilities	$	26,021		$	14,162		$	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 December 31, 2013 was 5.5 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:
						Rent (Offset)
		Fiscal year ending June 30,	Amortization			Expense
		2014	$	32,909		$	-1,158
		2015		61,754			-2,023
		2016		52,337			-1,562
		2017		47,884			-1,862
		2018		37,587			-1,981
		Thereafter		43,224			-183
		Total	$	275,695		$	-8,769

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	Note 5 — 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 December 31, 2013 and June 30, 2013:
			Fair Value Measurements on a Recurring Basis at
			31-Dec-13
			Level 1		Level 2		Level 3		Total
	Assets:
	Available-for-sale securities:
		Equity securities (a)	$	101	$	-	$	-	$	101
		Mutual funds / exchange traded funds (b)		43,292		-		-		43,292
	Derivatives:
		Foreign exchange forwards (c)		-		776		-		776
	Liabilities:
	Derivatives:
		Foreign exchange forwards (c)	$	-	$	1,737	$	-	$	1,737
	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
	These assets are included in short-term investments on the condensed consolidated balance sheet.
	These assets are included in other assets on the condensed consolidated balance sheet.
	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.
	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.
	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 six months ended December 31, 2013, we recorded gains of $0.3 and $0.9, respectively,  for instruments still held at December 31, 2013. For the three and six months ended December 31, 2012, we recorded gains of $1.8 million and $2.6 million for instruments still held at December 31, 2012. There were no material gains or losses recorded in the condensed consolidated statements of operations for available-for-sale securities still held at December 31, 2013 or 2012.
	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 six months ended December 31, 2013.

Derivative_Financial_Instrumen

Derivative Financial Instruments	6 Months Ended
	Dec. 31, 2013
Derivative Financial Instruments [Abstract]	'
Derivative Financial Instruments	'
	Note 6 — 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 December 31, 2013, the longest outstanding maturity was 15 months. As of December 31, 2013, a net $1.5 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. During the three and six months ended December 31, 2013, we recognized no material gains or losses due to hedge ineffectiveness.
	As of December 31, 2013 and June 30, 2013, we had cash flow and economic hedges with a notional value of $78.9 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 December 31, 2013 and June 30, 2013 was a liability of $1.0 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 December 31, 2013 and June 30, 2013 and their location in the condensed consolidated balance sheet are as follows:
				Derivative assets								Derivative liabilities
				Balance sheet								Balance sheet
				location		Fair value						location		Fair value
						December 31,			June 30,					December 31,			June 30,
						2013			2013					2013			2013
	Derivatives designated as hedging instruments:
												Accounts payable,
												accrued liabilities
		Foreign exchange forwards		Other current assets		$	237		$	395		and deferred income		$	-1,725		$	-159
	Derivatives not designated as hedging instruments:
												Accounts payable,
												accrued liabilities
		Foreign exchange forwards		Other current assets			539			151		and deferred income			-12			-194
	Total derivative assets (liabilities)					$	776		$	546				$	-1,737		$	-353
	The effects of derivative instruments that are designated as hedging instruments on the consolidated statement of operations and the consolidated statement of changes in stockholders' equity for the three months ended December 31, 2013 and 2012 and for the six months ended December 31, 2013 and 2012 are as follows:
																		Location of gain	Gain recognized
	Derivatives designated as									Location								recognized in income	in income (ineffective
	hedging instruments for			Loss						of (loss) gain reclassified		(Loss) gain reclassified						(ineffective portion and	portion and
	the three months ended			recognized in OCI						from OCI into income		from OCI into income						amount excluded from	amount excluded from
	December 31, 2013 and 2012:			(effective portion)						(effective portion)		(effective portion)						effectiveness testing)	effectiveness testing)
				2013			2012					2013			2012				2013		2012
	Foreign exchange									General and								General and
		forwards		$	-431		$	-374		administrative expenses		$	-394		$	35		administrative expenses	$	2	$	1
	Total			$	-431		$	-374				$	-394		$	35			$	2	$	1
																		Location of gain	Gain recognized in
	Derivatives designated as									Location								recognized in income	income (ineffective
	hedging instruments for			Loss						of (loss) gain reclassified		(Loss) gain reclassified						(ineffective portion and	portion and amount
	the six months ended			recognized in OCI						from OCI into income		from OCI into income						amount excluded from	excluded from
	December 31, 2013 and 2012:			(effective portion)						(effective portion)		(effective portion)						effectiveness testing)	effectiveness testing)
				2013			2012					2013			2012				2013		2012
	Foreign exchange									General and								General and
		forwards		$	-2,062		$	-1,058		administrative expenses		$	-332		$	266		administrative expenses	$	3	$	-
	Total			$	-2,062		$	-1,058				$	-332		$	266			$	3	$	-
	Included in the notional values above are $27.4 million and $33.6 million as of December 31, 2013 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 statement of operations for the three and six months ended December 31, 2013 and 2012 are as follows:
							(Loss) gain recognized in income
							Three Months Ended						Six Months Ended
		Derivatives not designated as			Location of (Loss) gain		December 31,						December 31,
		hedging instruments:			recognized in income		2013			2012			2013			2012
			Foreign exchange forwards		General and administrative expenses		$	-85		$	2,455		$	520		$	2,074
		Total					$	-85		$	2,455		$	520		$	2,074

Retirement_Benefits

Retirement Benefits	6 Months Ended
	Dec. 31, 2013
Retirement Benefits [Abstract]	'
Retirement Benefits	'
	Note 7 — 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 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 six months ended December 31, 2013 and 2012:
			Three Months Ended December 31,
			2013						2012
			North						North
			America			Europe			America			Europe
		Service cost	$	17,538		$	3,074		$	17,802		$	3,231
		Interest cost		35,212			10,249			34,036			9,734
		Expected return on plan assets		-47,181			-11,532			-47,000			-10,859
		Amortization of net loss		5,475			2,250			11,593			1,510
		Amortization of prior service (credit)/cost		-2,095			11			-2,094			10
		Net periodic benefit cost	$	8,949		$	4,052		$	14,337		$	3,626
			Six Months Ended December 31,
			2013						2012
			North						North
			America			Europe			America			Europe
		Service cost	$	35,326		$	6,039		$	35,696		$	6,463
		Interest cost		70,566			20,096			67,983			19,467
		Expected return on plan assets		-94,407			-22,589			-93,234			-21,719
		Amortization of net loss		11,124			4,419			23,068			3,021
		Amortization of prior service (credit)/cost		-4,189			21			-4,188			21
		Net periodic benefit cost	$	18,420		$	7,986		$	29,325		$	7,253
	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 six months ended December 31, 2013 and 2012:
				Three Months Ended						Six Months Ended
				December 31,						December 31,
				2013			2012			2013			2012
		Service cost		$	366		$	444		$	734		$	887
		Interest cost			2,220			2,206			4,442			4,412
		Expected return on plan assets			-28			-33			-56			-65
		Amortization of net (gain) loss			-433			99			-863			198
		Amortization of prior service credit			-1,751			-2,062			-3,503			-4,123
		Net periodic benefit cost		$	374		$	654		$	754		$	1,309
	Employer Contributions to Defined Benefit Pension Plans
	The Company made $61.1 million in contributions to the North American plans during the first six months of fiscal year 2014 and anticipates making $12.1 million in contributions over the remainder of the fiscal year. The Company made $19.7 million in contributions to European plans during the first six months of fiscal year 2014 and anticipates making $18.3 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 December 31, 2013 and 2012 amounted to $7.5 million and $7.4 million, respectively. The cost of the Company's contributions to the plans for the six months ended December 31, 2013 and 2012 amounted to $13.5 million and $13.0 million, respectively.
	The cost of the Company's contributions to the various U.K. defined contribution plans for the three months ended December 31, 2013 and 2012 amounted to $4.1 million and $5.7 million, respectively. The cost of the Company's contributions to the plans for the six months ended December 31, 2013 and 2012 amounted to $9.9 million and $11.2 million, respectively.

Debt_Commitments_and_Contingen

Debt, Commitments and Contingent Liabilities	6 Months Ended
	Dec. 31, 2013
Debt Commitments And Contingent Liabilities [Abstract]	'
Debt, Commitments and Contingent Liabilities	'
	Note 8 — 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 six months ended December 31, 2013 and 2012, the weighted-average interest rate on borrowings under the Senior Credit Facility was 1.98% and 1.51%, 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 December 31, 2013, we were in compliance with our covenants.
	As of December 31, 2013, Towers Watson had borrowings of $35.0 million outstanding under the Senior Credit Facility.
	Letters of Credit under the Senior Credit Facility
	As of December 31, 2013, 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 $1.5 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 six months ended December 31, 2013 and 2012 was 1.43% and 1.49%, 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 December 31, 2013, the balance on the Term Loan was $237.5 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 December 31, 2013, we had a $183.2 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.
	Plaintiffs in this action are former members of Towers Perrin's senior management, who left Towers Perrin at various times between 1995 and 2000. The Dugan plaintiffs seek to represent a class of former Towers Perrin shareholders who separated from service on or after January 1, 1971, 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 does 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 are 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 are proceeding in their individual capacities and do 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 seeks 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 are excluded from the proposed class in the Dugan Action. Towers Watson is also named as a defendant in the Pao Action.
	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 allege variously that there either was a promise that Towers Perrin would remain privately owned in perpetuity (Dugan Action) or that in the event of a change to public ownership plaintiffs would receive compensation (Allen and Pao Actions). Plaintiffs allege 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 assert 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 January 20, 2010, the court consolidated the three actions for all purposes.
	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. The parties have completed fact discovery. Neither the plaintiffs in Dugan nor the plaintiff in Pao have 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 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 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.
	On September 24, 2013, the court preliminarily certified the settlement class and preliminarily approved the parties' proposed settlement. The settlement remains subject to several conditions, including sufficient participation of the individual settlement class members and final judicial approval of the settlement terms.
	Towers Watson continues to believe the claims in these lawsuits are without merit. Given the stage of the proceedings, the Company has concluded that a material loss beyond accrued amounts is neither probable nor estimable.
	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. Acument seeks to recover an unspecified amount comprised primarily of loss of principal, investment losses, fees paid for consulting services, and attorney's fees. 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. The discovery phase of these legal proceedings has commenced. 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. The dispute remains extant. At this time, no material loss is probable in excess of amounts currently accrued.

Variable_Interest_Entities

Variable Interest Entities	6 Months Ended
	Dec. 31, 2013
Variable Interest Entities [Abstract]	'
Variable Interest Entity Disclosures [Text Block]	'
	Note 9 — 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 $1.5 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.
	Nonconsolidated VIEs
	We do not consolidate those funds in which we do not absorb a majority of the fund's expected losses or receive a majority of the fund's expected returns. Our maximum exposure to loss of these unconsolidated VIEs is limited to collection of any unpaid management fees (which are not material).
	Consolidated VIEs
	Some of the investments in these funds are held by the Company's defined benefit retirement plans, which are considered related parties. In addition, because of contractual language that restricts the investors' ability to exercise its economic interests in the funds, the other investors' interests are also considered related parties. While the Company does not absorb a majority of the expected losses or receive a majority of the expected returns of any of the funds through our management fee, we must combine this interest with the interests of our related parties for purposes of performing the primary beneficiary test. The party within the related party group that is most closely associated with the VIE must consolidate the VIE. We determined that the Company is the party most closely associated with these funds.
	Included within our condensed consolidated balance sheet as of December 31, 2013 is $277.1 million classified within Investments of consolidated variable interest entities and Non-controlling interests. The non-controlling interest balance is considered temporary equity as the units held by the investors are redeemable. The changes of the redeemable non-controlling interests balance for the six months ended December 31, 2013 is as follows:
		Balance as of June 30, 2013		$	-
			Redeemable non-controlling interest from consolidated variable interest entity		273,722
			Mark-to-market gains on investments held by consolidated variable interest entity		3,348
		Balance as of December 31, 2013		$	277,070
	Our maximum exposure to loss of these consolidated VIEs is limited to collection of any unpaid management fees (which are not material) and any potential increase to our pension funding obligation due to losses incurred by the funds. The assets of each of the consolidated funds may only be used to settle obligations of that respective fund. In addition, there is no recourse to the Company for the consolidated VIEs liabilities and the Company is not required to provide financial or other support to any of the consolidated VIEs.
	The consolidated investment funds are carried at fair value in the accompanying condensed consolidated financial statements. See Note 5 for a description of the fair value levels. All investments are valued at the net asset value as determined and reported by the fund manager. The Company classifies these investments as Level 2 or Level 3 based upon the redemption restrictions of each fund. Funds with a significant redemption restriction from the measurement date are classified as Level 3. The Company believes redemption restrictions, including notice periods, lock-up terms or gates, of greater than one year represent a significant restriction. The following presents our investments as of December 31, 2013:
			Fair Value Measurements on a Recurring Basis at
			31-Dec-13
			Level 1			Level 2			Level 3			Total
	Assets:
	Fund Strategy:
		Commodities	$	-		$	8,339		$	-		$	8,339
		Credit Long/Short		-			-			18,775			18,775
		Currency		-			6,822			-			6,822
		Discretionary Macro		-			29,924			-			29,924
		Equity Long/Short		-			29,347			17,170			46,517
		Managed Futures		-			12,296			-			12,296
		Multi Asset		-			20,244			-			20,244
		Multi Strategy		-			24,550			-			24,550
		Reinsurance		-			35,974			5,263			41,237
		SmartBeta		-			28,064			-			28,064
		Statistical Arbitrage		-			15,892			-			15,892
		Systemic Trading		-			24,411			-			24,411
	Total consolidated investment funds		$	-		$	235,863		$	41,208		$	277,071
	There were no transfers in or out of Level 3 since the initial investment in the funds. The following table sets forth a summary of changes in the fair value of the plan's Level 3 assets for the three and six months ended December 31, 2013:
				Credit			Equity
				Long/Short			Long/Short			Reinsurance			Total
		Beginning balance at June 30, 2013		$	-		$	-		$	-		$	-
		Net actual return on assets
		still held at the end of the year			677			1,084			112			1,873
		Net purchases, sales and settlements			18,098			16,086			5,151			39,335
		Ending balance at December 31, 2013		$	18,775		$	17,170		$	5,263		$	41,208

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income/(Loss)	'
Accumulated Other Comprehensive Income/(Loss)	'
	Note 10 — 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								Available-for-sale						Defined pension and
			currency		Hedge effectiveness (2)						securities (1)						post-retirement benefit costs (3)
			translation		Before				After		Before				After		Before				After
			-1		Tax		Tax		Tax		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		89,346		-2,062		836		-1,226		298		-73		225		-		-		-
	Amounts reclassified from
		accumulated other comprehensive
		income		-		332		-136		196		-		-		-		8,383		-1,852		6,531
	Net current-period other
		comprehensive income		89,346		-1,730		700		-1,030		298		-73		225		8,383		-1,852		6,531
	As of December 31, 2013		$	-41,750	$	-1,493	$	595	$	-898	$	845	$	-207	$	638	$	-225,434	$	63,052	$	-162,382
	Reclassification adjustments from accumulated other comprehensive income are included in Income from discontinued operations
	Reclassification adjustments from accumulated other comprehensive income are included in General and administrative expenses (see Note 6 – Derivative Financial Instruments for additional details)
	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	6 Months Ended
	Dec. 31, 2013
Restricted Stock [Abstract]	'
Restricted Stock	'
	Note 11 — 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 and six months ended December 31, 2012, we recorded $4.0 million and $8.0 million, respectively, 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, $0.5 million and $1.0 million is classified as discontinued operations for the Brokerage employees' awards relating to non-cash stock based compensation recorded for the three and six months ended December 31, 2012, respectively. The service period of this award was complete at January 1, 2013; there was no stock-based compensation related to this award recorded in fiscal year 2014.

ShareBased_Compensation

Share-Based Compensation	6 Months Ended
	Dec. 31, 2013
Share-Based Compensation [Abstract]	'
Share-Based Compensation	'
	Note 12 — 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. 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 $105.90. 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 six months ended December 31, 2013, we recorded $1.5 million and $2.7 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 six months ended December 31, 2013, we recorded $0.2 million and $1.0 million of stock-based compensation related to these grants, respectively. For the three and six months ended December 31, 2012, we recorded $2.8 million and $2.8 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 six months ended December 31, 2013, we recorded ($1.0) million and ($0.5) million, respectively, of stock-based compensation related to these grants as we adjusted the cumulative expense recorded in the second quarter of fiscal year 2014 according to the performance metric. For the three and six months ended December 31, 2012, we recorded $1.2 million and $1.5 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 six months ended December 31, 2013, we recorded $0.4 million and $0.7 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. We recorded non-cash stock based compensation related to these awards of $0.3 million for both the three and six months ended December 31, 2013.
	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 six months ended December 31, 2013, we recorded $1.6 million and $3.4 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 six months ended December 31, 2013, we recorded $0.5 million and $1.0 million, respectively, of non-cash stock based compensation related to these grants. For the three and six months ended December 31, 2012, we recorded $1.2 million and $2.3 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 six months ended December 31, 2013, we recorded $0.4 million and $0.8 million of non-cash stock based compensation related to these grants, respectively. For the three and six months ended December 31, 2012, we recorded $1.1 million and $2.2 million of non-cash stock based compensation related to these grants, respectively.
	We classified $1.0 million and $1.2 million for the three and six months ended December 31, 2013, respectively, to discontinued operations related to non-cash stock based compensation for the Brokerage employees awards under our SEP Plan. We classified $0.1 million and $0.3 million for the three and six months ended December 31, 2012, 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 $0.2 million and $0.7 million, respectively, for the three and six months ended December 31, 2013, and $0.2 million and $0.7 million, respectively, for the three and six months ended December 31, 2012.
	Stock Options
	Liazon Options. In November 2013, in connection with the 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 $0.1 million for both the three and six months ended December 31, 2013.
	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's stock option awards 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 $0.4 million and $0.9 million, respectively, for the three and six months ended December 31, 2013 and $1.5 million and $3.9 million, respectively, for the three and six months ended December 31, 2012.

Income_Taxes

Income Taxes	6 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Income Taxes	'
	Note 13 — Income Taxes.
	Provision for income taxes on continuing operations for the three and six months ended December 31, 2013 was $42.3 million and $57.1 million, respectively, compared to $36.1 million and $64.4 million, respectively, for the three and six months ended December 31, 2012. The effective tax rate was 24.5% for the six months ended December 31, 2013 and 33.3% for the six months ended December 31, 2012. The decrease in the effective tax rate for the six months is primarily due to current year income tax benefits on the release of uncertain tax positions of 7.2% related to the lapses in statute of limitations in various taxing jurisdictions, primarily the U.S., and an income tax benefit of 1.5% in connection with the enacted statutory tax rate reduction in the U.K. The impact of these current year income tax benefits were recognized discretely in the three months ended September 30, 2013. There were no significant discrete adjustments recorded to income tax expense in the second quarter of fiscal 2014. 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 $2.2 million to $16.1 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 is in the process of assessing the impacts of these regulations but believes that the impact of these new regulations will not be material to the financial statements.

Segment_Information

Segment Information	6 Months Ended
	Dec. 31, 2013
Segment Information [Abstract]	'
Segment Information	'
	Note 14 — 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).
	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 December 31, 2013:
					Risk and		Talent and		Exchange
			Benefits		Financial Services		Rewards		Solutions		Total
		Revenue (net of reimbursable expenses)	$	487,337	$	161,178	$	170,323	$	35,736	$	854,574
		Net operating income		148,349		34,442		53,096		-7,223		228,664
	The table below presents specified information about the continuing operations of the reported segments for the three months ended December 31, 2012:
					Risk and		Talent and		Exchange
			Benefits		Financial Services		Rewards		Solutions		Total
		Revenue (net of reimbursable expenses)	$	519,418	$	172,405	$	176,185	$	15,720	$	883,728
		Net operating income		185,817		41,268		60,078		-10,128		277,035
	The table below presents specified information about the continuing operations of the reported segments for the six months ended December 31, 2013:
					Risk and		Talent and		Exchange
			Benefits		Financial Services		Rewards		Solutions		Total
		Revenue (net of reimbursable expenses)	$	944,366	$	302,961	$	323,892	$	71,126	$	1,642,345
		Net operating income		285,887		56,929		97,160		-767		439,209
	The table below presents specified information about the continuing operations of the reported segments for the six months ended December 31, 2012:
					Risk and		Talent and		Exchange
			Benefits		Financial Services		Rewards		Solutions		Total
		Revenue (net of reimbursable expenses)	$	976,546	$	321,905	$	316,420	$	29,638	$	1,644,509
		Net operating income		321,671		64,524		85,869		-15,893		456,171
	The table below presents a reconciliation of the information reported by segment to the consolidated amounts reported from continuing operations for the three and six months ended December 31, 2013 and 2012:
			Three Months Ended				Six Months Ended
			December 31,				December 31,
			2013		2012		2013		2012
	Revenue:
		Total segment revenue	$	854,574	$	883,728	$	1,642,345	$	1,644,509
		Reimbursable expenses and other		33,581		27,293		55,749		59,747
		Revenue	$	888,155	$	911,021	$	1,698,094	$	1,704,256
	Net Operating Income:
		Total segment net operating income	$	228,664	$	277,035	$	439,209	$	456,171
		Differences in allocation methods (1)		6,869		-8,881		16,855		5,994
		Amortization of intangibles		-18,691		-19,727		-37,583		-38,822
		Transaction and integration expenses		-808		-9,152		-808		-18,425
		Stock-based compensation (2)		-1,782		-10,204		-5,345		-17,828
		Discretionary compensation		-74,085		-98,202		-150,207		-170,782
		Payroll tax on discretionary compensation		-4,075		-5,378		-8,643		-9,684
		Other, net		-7,666		-11,072		-22,631		-12,931
		Income from operations	$	128,426	$	114,419	$	230,847	$	193,693
	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.
	Stock-based compensation excludes RSUs granted in conjunction with our performance bonus, which are included in discretionary compensation.

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Note 15 — 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 December 31,
			2013					2012
						Per Share					Per Share
			Income		Shares	Amount		Income		Shares	Amount
		Basic EPS
		Income from continuing operations	$	90,328				$	78,195
		Less: Income/(Loss) attributable to
		non-controlling interests		3,737					-1,683
		Income from continuing operations attributable
		to common stockholders		86,591					79,878
		Less: Income allocated to participating securities		-					1,846
		Income from continuing operations attributable
		to common stockholders	$	86,591	70,809	$	1.22	$	78,032	69,594	$	1.12
		Diluted EPS
		Share-based compensation awards		-	404				-	590
		Income available to common shareholders	$	86,591	71,213	$	1.21	$	78,032	70,184	$	1.11
			Six Months Ended December 31,
			2013					2012
						Per Share					Per Share
			Income		Shares	Amount		Income		Shares	Amount
		Basic EPS
		Income from continuing operations	$	176,072				$	129,235
		Less: Income/(Loss) attributable to
		non-controlling interests		3,711					-2,624
		Income from continuing operations attributable
		to common stockholders		172,361					131,859
		Less: Income allocated to participating securities		-					3,074
		Income from continuing operations attributable
		to common stockholders	$	172,361	70,805	$	2.43	$	128,785	69,700	$	1.85
		Diluted EPS
		Share-based compensation awards		-	325				-	545
		Income available to common shareholders	$	172,361	71,130	$	2.42	$	128,785	70,245	$	1.83

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	6 Months Ended
	Dec. 31, 2013
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Accounting Pronouncements	'
	Note 16 — 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 interim and annual periods that begin after December 15, 2013, and 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.

Subsequent_Events

Subsequent Events	6 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Note 17 — Subsequent Events.
	On January 23, 2014, Towers Watson announced plans to unite the company-wide expertise and resources dedicated to health care exchanges and administration within its Exchange Solutions segment. The expansion of the Exchange Solutions segment will consist of combining certain of the operations and associates of TAS North America, with the newly-acquired Liazon entity and our existing Exchange Solutions LOB to align their respective strategic goals under the existing Exchange Solutions Segment. The result will be a much larger and broader business unit dedicated to helping employers deliver health care benefits to their employees and retirees through private exchanges and administration. We are conducting an evaluation of the infrastructure of our business and reporting to align with this initiative.

Variable_Interest_Entities_Pol

Variable Interest Entities (Policy)	6 Months Ended
	Dec. 31, 2013
Variable Interest Entities [Abstract]	'
Consolidation Variable Interest Entity [Policy Text Block]	'
	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 $1.5 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.
	Nonconsolidated VIEs
	We do not consolidate those funds in which we do not absorb a majority of the fund's expected losses or receive a majority of the fund's expected returns. Our maximum exposure to loss of these unconsolidated VIEs is limited to collection of any unpaid management fees (which are not material).
	Consolidated VIEs
	Some of the investments in these funds are held by the Company's defined benefit retirement plans, which are considered related parties. In addition, because of contractual language that restricts the investors' ability to exercise its economic interests in the funds, the other investors' interests are also considered related parties. While the Company does not absorb a majority of the expected losses or receive a majority of the expected returns of any of the funds through our management fee, we must combine this interest with the interests of our related parties for purposes of performing the primary beneficiary test. The party within the related party group that is most closely associated with the VIE must consolidate the VIE. We determined that the Company is the party most closely associated with these funds.

Acquisitions_and_Divestitures_

Acquisitions and Divestitures (Tables)	6 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Group [Abstract]	'
Schedule Of Disposal Groups Including Discontinued Operations Income Statement [Table Text Block]	'
			Three months ended				Six months ended
			December 31,				December 31,
			2013		2012		2013		2012
		Revenue from discontinued operations	$	22,564	$	35,224	$	63,762	$	76,237
		Income from discontinued operations before taxes		9,894		3,142		24,398		13,695
		Tax expense on discontinued operations		3,692		730		8,801		4,537
		Net income from discontinued operations		6,202		2,412		15,597		9,158
		Gain from sale of discontinued operations		27,989		-		18,480		-
		Tax expense on gain from sale of discontinued operations		34,594		-		32,036		-
		Net loss from sale of discontinued operations		-6,605		-		-13,556		-
		Total net (loss)/income from discontinued operations	$	-403	$	2,412	$	2,041	$	9,158

Investments_Tables

Investments (Tables)	6 Months Ended
	Dec. 31, 2013
Investment [Abstract]	'
Schedule of investments	'
		31-Dec-13								30-Jun-13
		Amortized		Unrealized		Unrealized		Estimated		Amortized		Unrealized		Unrealized		Estimated
		Cost		Gains		Losses		Fair Value		Cost		Gains		Losses		Fair Value
	Fixed income securities (a)	$	-	$	-	$	-	$	-	$	56,602	$	15	$	-2	$	56,615
	Equity securities (a)		91		10		-		101		853		476		-1		1,328
	Mutual funds and exchange-traded funds (b)		41,637		1,663		-8		43,292		26,666		14		-97		26,583
	Classified as short-term investments on the condensed consolidated balance sheet as of December 31, 2013 and June 30, 2013, respectively. 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 investments and therefore, are not included in the table above.
	Classified as other assets on the condensed consolidated balance sheet as of December 31, 2013 and June 30, 2013, respectively.

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets [Abstract]	'
Schedule of goodwill	'
						Risk and
						Financial			Talent and			Exchange
			Benefits			Services			Rewards			Solutions			All Other		Total
		Balance as of June 30, 2013	$	1,233,272		$	534,150		$	108,850		$	341,449		$	1,214	$	2,218,935
		Goodwill related to acquisitions		-			-			-			194,384			-		194,384
		Goodwill related to disposals		-			-167,822			-			-			-		-167,822
		Translation adjustment		43,243			20,087			3,508			-			-		66,838
		Balance as of December 31, 2013	$	1,276,515		$	386,415		$	112,358		$	535,833		$	1,214	$	2,312,335
Schedule of changes in finite-lived intangible assets by major class	'
				Customer			Core/			Favorable
				related			developed			lease
				intangible			technology			agreements			Total
		Balance as of June 30, 2013		$	246,247		$	69,515		$	3,565		$	319,327
		Amortization			-23,028			-14,994			-474			-38,496
		Intangibles related to disposal			-8,254			-			-			-8,254
		Translation adjustment			5,534			675			-1			6,208
		Balance as of December 31, 2013		$	220,499		$	55,196		$	3,090		$	278,785
Schedule of finite-lived intangible assets by major class	'
			As of December 31, 2013						As of June 30, 2013
			Gross						Gross
			Carrying			Accumulated			Carrying			Accumulated
			Amount			Amortization			Amount			Amortization
		Finite-lived intangible assets and liabilities:
		Trade name	$	370			370		$	370			370
		Customer related intangibles		387,111			166,612			390,027			143,780
		Core/developed technology		141,177			85,981			164,762			95,247
		Favorable lease agreements		6,493			3,403			6,496			2,931
		Total finite-lived intangible assets	$	535,151		$	256,366		$	561,655		$	242,328
		Unfavorable lease agreements		26,021			14,162			25,591			12,122
		Total finite-lived intangible liabilities	$	26,021		$	14,162		$	25,591		$	12,122
Schedule of rent offset, future amortization	'
						Rent (Offset)
		Fiscal year ending June 30,	Amortization			Expense
		2014	$	32,909		$	-1,158
		2015		61,754			-2,023
		2016		52,337			-1,562
		2017		47,884			-1,862
		2018		37,587			-1,981
		Thereafter		43,224			-183
		Total	$	275,695		$	-8,769

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended										6 Months Ended
	Jun. 30, 2013										Dec. 31, 2013
Fair Value Measurements [Abstract]	'										'
Schedule of fair value, assets and liabilities measured on recurring basis	'										'
			Fair Value Measurements on a Recurring Basis at										Fair Value Measurements on a Recurring Basis at
			30-Jun-13										31-Dec-13
			Level 1		Level 2		Level 3		Total				Level 1		Level 2		Level 3		Total
	Assets:										Assets:
	Available-for-sale securities:										Available-for-sale securities:
		U.S. treasury securities and obligations of the U.S government,										Equity securities (a)	$	101	$	-	$	-	$	101
		government agencies and authorities (a)	$	2,014	$	-	$	-	$	2,014		Mutual funds / exchange traded funds (b)		43,292		-		-		43,292
		U.S. Corporate bonds (a)		-		53,100		-		53,100	Derivatives:
		Foreign corporate bonds (a)		-		1,501		-		1,501		Foreign exchange forwards (c)		-		776		-		776
		Equity securities (a)		1,328		-		-		1,328	Liabilities:
		Mutual funds / exchange-traded funds (b)		26,583		-		-		26,583	Derivatives:
	Derivatives:											Foreign exchange forwards (c)	$	-	$	1,737	$	-	$	1,737
		Foreign exchange forwards (c)		-		546		-		546	Contingent Liabilities:
	Liabilities:											Retention bonus liability (d)		-		-		19,807		19,807
	Derivatives:
		Foreign exchange forwards (c)	$	-	$	353	$	-	$	353
											These assets are included in short-term investments on the condensed consolidated balance sheet.
	These assets are included in short-term investments on the condensed consolidated balance sheet.
											These assets are included in other assets on the condensed consolidated balance sheet.
	These assets are included in other assets on the condensed consolidated balance sheet.
											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.
	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.
											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.

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended																6 Months Ended
	Dec. 31, 2013																Dec. 31, 2013
Derivative Financial Instruments [Abstract]	'																'
Schedule of derivative assets and liabilities at fair value	'																'
																				Derivative assets								Derivative liabilities
																				Balance sheet								Balance sheet
																				location		Fair value						location		Fair value
																						December 31,			June 30,					December 31,			June 30,
																						2013			2013					2013			2013
																	Derivatives designated as hedging instruments:
																												Accounts payable,
																												accrued liabilities
																		Foreign exchange forwards		Other current assets		$	237		$	395		and deferred income		$	-1,725		$	-159
																	Derivatives not designated as hedging instruments:
																												Accounts payable,
																												accrued liabilities
																		Foreign exchange forwards		Other current assets			539			151		and deferred income			-12			-194
																	Total derivative assets (liabilities)					$	776		$	546				$	-1,737		$	-353
Schedule of the effect of derivative instruments on statement of financial performance	'																'
												Location of gain	Gain recognized
	Derivatives designated as						Location					recognized in income	in income (ineffective																					Location of gain	Gain recognized in
	hedging instruments for		Loss				of (loss) gain reclassified	(Loss) gain reclassified				(ineffective portion and	portion and				Derivatives designated as									Location								recognized in income	income (ineffective
	the three months ended		recognized in OCI				from OCI into income	from OCI into income				amount excluded from	amount excluded from				hedging instruments for			Loss						of (loss) gain reclassified		(Loss) gain reclassified						(ineffective portion and	portion and amount
	December 31, 2013 and 2012:		(effective portion)				(effective portion)	(effective portion)				effectiveness testing)	effectiveness testing)				the six months ended			recognized in OCI						from OCI into income		from OCI into income						amount excluded from	excluded from
																	December 31, 2013 and 2012:			(effective portion)						(effective portion)		(effective portion)						effectiveness testing)	effectiveness testing)
			2013		2012			2013		2012			2013		2012
	Foreign exchange						General and					General and								2013			2012					2013			2012				2013		2012
		forwards	$	-431	$	-374	administrative expenses	$	-394	$	35	administrative expenses	$	2	$	1	Foreign exchange									General and								General and
	Total		$	-431	$	-374		$	-394	$	35		$	2	$	1		forwards		$	-2,062		$	-1,058		administrative expenses		$	-332		$	266		administrative expenses	$	3	$	-
																	Total			$	-2,062		$	-1,058				$	-332		$	266			$	3	$	-
Schedule of the effect of other derivatives not designated as hedging instruments on statement of financial performance	'																'
																							(Loss) gain recognized in income
																							Three Months Ended						Six Months Ended
																		Derivatives not designated as			Location of (Loss) gain		December 31,						December 31,
																		hedging instruments:			recognized in income		2013			2012			2013			2012
																			Foreign exchange forwards		General and administrative expenses		$	-85		$	2,455		$	520		$	2,074
																		Total					$	-85		$	2,455		$	520		$	2,074

Retirement_Benefits_Tables

Retirement Benefits (Tables)	3 Months Ended										6 Months Ended
	Dec. 31, 2013										Dec. 31, 2013
Retirement Benefits [Abstract]	'										'
Schedule of net benefit costs Pension	'										'
			Three Months Ended December 31,										Six Months Ended December 31,
			2013				2012						2013						2012
			North				North
			America		Europe		America		Europe				North						North
		Service cost	$	17,538	$	3,074	$	17,802	$	3,231			America			Europe			America			Europe
		Interest cost		35,212		10,249		34,036		9,734		Service cost	$	35,326		$	6,039		$	35,696		$	6,463
		Expected return on plan assets		-47,181		-11,532		-47,000		-10,859		Interest cost		70,566			20,096			67,983			19,467
		Amortization of net loss		5,475		2,250		11,593		1,510		Expected return on plan assets		-94,407			-22,589			-93,234			-21,719
		Amortization of prior service (credit)/cost		-2,095		11		-2,094		10		Amortization of net loss		11,124			4,419			23,068			3,021
		Net periodic benefit cost	$	8,949	$	4,052	$	14,337	$	3,626		Amortization of prior service (credit)/cost		-4,189			21			-4,188			21
												Net periodic benefit cost	$	18,420		$	7,986		$	29,325		$	7,253
Schedule of net benefit costs OPEB	'										'
														Three Months Ended						Six Months Ended
														December 31,						December 31,
														2013			2012			2013			2012
												Service cost		$	366		$	444		$	734		$	887
												Interest cost			2,220			2,206			4,442			4,412
												Expected return on plan assets			-28			-33			-56			-65
												Amortization of net (gain) loss			-433			99			-863			198
												Amortization of prior service credit			-1,751			-2,062			-3,503			-4,123
												Net periodic benefit cost		$	374		$	654		$	754		$	1,309

Variable_Interest_Entities_Tab

Variable Interest Entities (Tables)	6 Months Ended
	Dec. 31, 2013
Variable Interest Entities [Abstract]	'
Redeemable Noncontrolling Interest [TableTextBlock]	'
		Balance as of June 30, 2013		$	-
			Redeemable non-controlling interest from consolidated variable interest entity		273,722
			Mark-to-market gains on investments held by consolidated variable interest entity		3,348
		Balance as of December 31, 2013		$	277,070
Consolidated Investment Fund Fair Value Table	'
			Fair Value Measurements on a Recurring Basis at
			31-Dec-13
			Level 1			Level 2			Level 3			Total
	Assets:
	Fund Strategy:
		Commodities	$	-		$	8,339		$	-		$	8,339
		Credit Long/Short		-			-			18,775			18,775
		Currency		-			6,822			-			6,822
		Discretionary Macro		-			29,924			-			29,924
		Equity Long/Short		-			29,347			17,170			46,517
		Managed Futures		-			12,296			-			12,296
		Multi Asset		-			20,244			-			20,244
		Multi Strategy		-			24,550			-			24,550
		Reinsurance		-			35,974			5,263			41,237
		SmartBeta		-			28,064			-			28,064
		Statistical Arbitrage		-			15,892			-			15,892
		Systemic Trading		-			24,411			-			24,411
	Total consolidated investment funds		$	-		$	235,863		$	41,208		$	277,071
Level 3 Rollforward - consolidated investment funds	'
				Credit			Equity
				Long/Short			Long/Short			Reinsurance			Total
		Beginning balance at June 30, 2013		$	-		$	-		$	-		$	-
		Net actual return on assets
		still held at the end of the year			677			1,084			112			1,873
		Net purchases, sales and settlements			18,098			16,086			5,151			39,335
		Ending balance at December 31, 2013		$	18,775		$	17,170		$	5,263		$	41,208

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income/(Loss) (Tables)	3 Months Ended																						6 Months Ended
	Dec. 31, 2013																						Dec. 31, 2013
Accumulated Other Comprehensive Income/(Loss)	'																						'
Schedule of Accumulated Other Comprehensive Income/(Loss)	'																						'
			Foreign								Available-for-sale						Defined pension and						Reclassification adjustments from accumulated other comprehensive income are included in Income from discontinued operations
			currency		Hedge effectiveness (2)						securities (1)						post-retirement benefit costs (3)						Reclassification adjustments from accumulated other comprehensive income are included in General and administrative expenses (see Note 6 – Derivative Financial Instruments for additional details)
			translation		Before				After		Before				After		Before				After		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)
			-1		Tax		Tax		Tax		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		89,346		-2,062		836		-1,226		298		-73		225		-		-		-
	Amounts reclassified from
		accumulated other comprehensive
		income		-		332		-136		196		-		-		-		8,383		-1,852		6,531
	Net current-period other
		comprehensive income		89,346		-1,730		700		-1,030		298		-73		225		8,383		-1,852		6,531
	As of December 31, 2013		$	-41,750	$	-1,493	$	595	$	-898	$	845	$	-207	$	638	$	-225,434	$	63,052	$	-162,382

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended																								6 Months Ended
	Dec. 31, 2013												Dec. 31, 2012												Dec. 31, 2013
Segment Information [Abstract]	'												'												'
Schedule of segment information, by segment	'												'												'
					Risk and		Talent and		Exchange								Risk and		Talent and		Exchange								Risk and		Talent and		Exchange
			Benefits		Financial Services		Rewards		Solutions		Total				Benefits		Financial Services		Rewards		Solutions		Total				Benefits		Financial Services		Rewards		Solutions		Total
		Revenue (net of reimbursable expenses)	$	487,337	$	161,178	$	170,323	$	35,736	$	854,574		Revenue (net of reimbursable expenses)	$	519,418	$	172,405	$	176,185	$	15,720	$	883,728		Revenue (net of reimbursable expenses)	$	944,366	$	302,961	$	323,892	$	71,126	$	1,642,345
		Net operating income		148,349		34,442		53,096		-7,223		228,664		Net operating income		185,817		41,268		60,078		-10,128		277,035		Net operating income		285,887		56,929		97,160		-767		439,209
																													Risk and		Talent and		Exchange
																											Benefits		Financial Services		Rewards		Solutions		Total
																										Revenue (net of reimbursable expenses)	$	976,546	$	321,905	$	316,420	$	29,638	$	1,644,509
																										Net operating income		321,671		64,524		85,869		-15,893		456,171
Schedule of reconciliation of segment information to the consolidated amounts	'												'												'
																											Three Months Ended				Six Months Ended
																											December 31,				December 31,
																											2013		2012		2013		2012
																									Revenue:
																										Total segment revenue	$	854,574	$	883,728	$	1,642,345	$	1,644,509
																										Reimbursable expenses and other		33,581		27,293		55,749		59,747
																										Revenue	$	888,155	$	911,021	$	1,698,094	$	1,704,256
																									Net Operating Income:
																										Total segment net operating income	$	228,664	$	277,035	$	439,209	$	456,171
																										Differences in allocation methods (1)		6,869		-8,881		16,855		5,994
																										Amortization of intangibles		-18,691		-19,727		-37,583		-38,822
																										Transaction and integration expenses		-808		-9,152		-808		-18,425
																										Stock-based compensation (2)		-1,782		-10,204		-5,345		-17,828
																										Discretionary compensation		-74,085		-98,202		-150,207		-170,782
																										Payroll tax on discretionary compensation		-4,075		-5,378		-8,643		-9,684
																										Other, net		-7,666		-11,072		-22,631		-12,931
																										Income from operations	$	128,426	$	114,419	$	230,847	$	193,693
																									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.
																									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)	6 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of earnings per share, basic and diluted	'
			Three Months Ended December 31,
			2013					2012
						Per Share					Per Share
			Income		Shares	Amount		Income		Shares	Amount
		Basic EPS
		Income from continuing operations	$	90,328				$	78,195
		Less: Income/(Loss) attributable to
		non-controlling interests		3,737					-1,683
		Income from continuing operations attributable
		to common stockholders		86,591					79,878
		Less: Income allocated to participating securities		-					1,846
		Income from continuing operations attributable
		to common stockholders	$	86,591	70,809	$	1.22	$	78,032	69,594	$	1.12
		Diluted EPS
		Share-based compensation awards		-	404				-	590
		Income available to common shareholders	$	86,591	71,213	$	1.21	$	78,032	70,184	$	1.11
			Six Months Ended December 31,
			2013					2012
						Per Share					Per Share
			Income		Shares	Amount		Income		Shares	Amount
		Basic EPS
		Income from continuing operations	$	176,072				$	129,235
		Less: Income/(Loss) attributable to
		non-controlling interests		3,711					-2,624
		Income from continuing operations attributable
		to common stockholders		172,361					131,859
		Less: Income allocated to participating securities		-					3,074
		Income from continuing operations attributable
		to common stockholders	$	172,361	70,805	$	2.43	$	128,785	69,700	$	1.85
		Diluted EPS
		Share-based compensation awards		-	325				-	545
		Income available to common shareholders	$	172,361	71,130	$	2.42	$	128,785	70,245	$	1.83

Organization_and_Basis_of_Pres1

Organization and Basis of Presentation (Details)	3 Months Ended
	Dec. 31, 2013
Organization and Basis of Presentation [Abstract]	'
Current Fiscal Year End Date	'--06-30

Acquisitions_and_Divestitures_1

Acquisitions and Divestitures (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Selected Income Statement Information	'	'	'	'
Revenue from discontinued operations	$22,564,000	$35,224,000	$63,762,000	$76,237,000
Income from discontinued operations before taxes	9,894,000	3,142,000	24,398,000	13,695,000
Tax expense on discontinued operations	3,692,000	730,000	8,801,000	4,537,000
Net income from discontinued operations	6,202,000	2,412,000	15,597,000	9,158,000
Gain from sale of discontinued operations	27,989,000	'	18,480,000	'
Tax expense on gain from sale of discontinued operations	34,594,000	'	32,036,000	'
Net loss from sale of discontinued operations	-6,605,000	'	-13,556,000	'
Total net (loss)/income from discontinued operations	-403,000	2,412,000	2,041,000	9,158,000
Brokerage Business [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 as JLT Towers Re.	'	'	'
Segment disposal group belonged to	'Risk and Financial Services segment	'	'	'
Agreement proceeds	250,000,000	'	250,000,000	'
Selected Income Statement Information	'	'	'	'
Proceeds from purchase price adjustment	28,700,000	'	28,700,000	'
Description of retential 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 December 31, 2013 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	'	21,700,000	'
Agreement consideration	212,400,000	'	212,400,000	'
Transaction costs	6,300,000	'	'	'
Brokerage Business [Member] | Alliance Agreement [Member]	'	'	'	'
Discontinued Operations Disclosures	'	'	'	'
Discontinued Operation Percentage Of Continuing Cash Flows After Disposal	1.00%	'	1.00%	'
Brokerage Business [Member] | Insurance And Reinsurance Placement [Member]	'	'	'	'
Discontinued Operations Disclosures	'	'	'	'
Intercompany revenue eliminated	'	'	2,800,000	'
Brokerage Business [Member] | Transitional Services Agreement [Member]	'	'	'	'
Discontinued Operations Disclosures	'	'	'	'
Amount of continuing cash flows	6,300,000	'	'	'
Brokerage Business [Member] | Combined Ongoing Expenses [Member]	'	'	'	'
Discontinued Operations Disclosures	'	'	'	'
Discontinued Operation Percentage Of Continuing Cash Flows After Disposal	7.40%	'	7.40%	'
Liazon [Member]	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Name of aquired entity	'Liazon	'	'	'
Acquisition date	22-Nov-13	'	'	'
Cash paid	203,200,000	'	203,200,000	'
Consideration transferred	211,200,000	'	211,200,000	'
Deferred tax asset acquired	13,100,000	'	13,100,000	'
Goodwill acquired	194,400,000	'	194,400,000	'
Net tangible assets acquired	3,700,000	'	3,700,000	'
Stock based compensation awards assumed, fair value	$8,000,000	'	'	'

Investments_Details

Investments (Details) (USD $)	6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Proceeds from Sale of Fixed Income Securities [Line Items]	'	'	'
Proceeds from Sale or Maturity of Available-for-sale Debt Securities	$58,200,000	$26,500,000	'
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Abstract]	'	'	'
Fair value of investments in an unrealized loss position	10,000,000	'	36,300,000
Sale Brokerage Business [Member]	'	'	'
Proceeds from Sale of Fixed Income Securities [Line Items]	'	'	'
Proceeds from Sale or Maturity of Available-for-sale Debt Securities	1,600,000	'	'
Fixed income securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	0	'	56,602,000
Unrealized Gains	0	'	15,000
Unrealized Losses	0	'	-2,000
Estimated Fair Value	0	'	56,615,000
Equity securities	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	91,000	'	853,000
Unrealized Gains	10,000	'	476,000
Unrealized Losses	0	'	-1,000
Estimated Fair Value	101,000	'	1,328,000
Mutual funds and exchange-traded funds	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Amortized Cost	41,637,000	'	26,666,000
Unrealized Gains	1,663,000	'	14,000
Unrealized Losses	-8,000	'	-97,000
Estimated Fair Value	$43,292,000	'	$26,583,000

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	6 Months Ended
	Dec. 31, 2013
Goodwill [Roll Forward]	'
Goodwill as of	$2,218,935,000
Goodwill related to acquisitions	194,384,000
Goodwill related to disposals	-167,822,000
Translation adjustment	66,838,000
Goodwill as of	2,312,335,000
Benefits [Member]	'
Goodwill [Roll Forward]	'
Goodwill as of	1,233,272,000
Translation adjustment	43,243,000
Goodwill as of	1,276,515,000
Risk And Financial Services [Member]	'
Goodwill [Roll Forward]	'
Goodwill as of	534,150,000
Goodwill related to disposals	-167,822,000
Translation adjustment	20,087,000
Goodwill as of	386,415,000
Talent And Rewards [Member]	'
Goodwill [Roll Forward]	'
Goodwill as of	108,850,000
Translation adjustment	3,508,000
Goodwill as of	112,358,000
Exchange Solutions [Member]	'
Goodwill [Roll Forward]	'
Goodwill as of	341,449,000
Goodwill related to acquisitions	194,384,000
Translation adjustment	0
Goodwill as of	535,833,000
All Other [Member]	'
Goodwill [Roll Forward]	'
Goodwill as of	1,214,000
Translation adjustment	0
Goodwill as of	$1,214,000

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets (Details1) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Intangible Assets, Amortization Period [Member]

Intangible Assets, Amortization Period [Member]

Intangible Assets, Amortization Period [Member]

Intangible Assets, Amortization Period [Member]

Trade Names [Member]

Trade Names [Member]

Customer Related Intangibles [Member]

Customer Related Intangibles [Member]

Developed Technology Rights [Member]

Developed Technology Rights [Member]

Lease Agreements [Member]

Lease Agreements [Member]

Unfavorable Lease Agreements [Member]

Unfavorable Lease Agreements [Member]

Finite-Lived Intangible Assets Roll Forward

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of

'

$319,327,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangibles related to disposal

'

-8,254,000

'

'

'

'

'

'

'

'

-8,254,000

'

'

'

'

'

'

'

Amortization

'

-38,022,000

-39,892,000

'

'

'

'

'

'

'

-23,028,000

'

-14,994,000

'

'

'

'

'

Rent expense for lease intangible

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-474,000

'

'

'

Total intangible amortization and rent expense

'

-38,496,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Translation adjustment

'

6,208,000

'

'

'

'

'

'

'

'

5,534,000

'

675,000

'

-1,000

'

'

'

Balance as of

278,785,000

278,785,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets By Category [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Carrying Amount

535,151,000

535,151,000

'

561,655,000

'

'

'

'

370,000

370,000

387,111,000

390,027,000

141,177,000

164,762,000

6,493,000

6,496,000

'

'

Accumulated Amortization

256,366,000

256,366,000

'

242,328,000

'

'

'

'

370,000

370,000

166,612,000

143,780,000

85,981,000

95,247,000

3,403,000

2,931,000

'

'

Gross Carrying Amount - Intangible Liabilities

26,021,000

26,021,000

'

25,591,000

'

'

'

'

'

'

'

'

'

'

'

'

26,021,000

25,591,000

Accumulated amortization - Intangible Liabilities

14,162,000

14,162,000

'

12,122,000

'

'

'

'

'

'

'

'

'

'

'

'

14,162,000

12,122,000

Weighted average remaining life of intangible assets and liabilities

'5 years 6 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in Accounting Estimate [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in Accounting Estimate, Description

'

'

'

'

'

'

'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

'

'

'

'

1,400,000

1,700,000

2,300,000

3,800,000

'

'

'

'

'

'

'

'

'

'

Intangible Assets Other Disclosures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Indefinite-Lived Intangible Assets (Excluding Goodwill)

376,600,000

376,600,000

'

368,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible Lease Liability

11,900,000

11,900,000

'

13,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction to rent expense

'

-1,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2014

32,909,000

32,909,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2015

61,754,000

61,754,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2016

52,337,000

52,337,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2017

47,884,000

47,884,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2018

37,587,000

37,587,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Thereafter

43,224,000

43,224,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total

275,695,000

275,695,000

'

'

'

'

'

'

'

'

220,499,000

246,247,000

55,196,000

69,515,000

3,090,000

3,565,000

'

'

Future Amortization Rent Offset [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2014

'

-1,158,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2015

'

-2,023,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2016

'

-1,562,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2017

'

-1,862,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2018

'

-1,981,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Thereafter

'

-183,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total

'

($8,769,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)

3 Months Ended

6 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Fair Value, Inputs, Level 3 [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]

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 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

US Treasury and Government [Member]

Equity Securities [Member]

Equity Securities [Member]

Mutual Funds [Member]

Mutual Funds [Member]

Corporate Bond Securities [Member]

Foreign Corporate Debt Securities [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Available-for-sale Securities

'

'

'

'

'

$2,014,000

$53,100,000

$1,501,000

$101,000

$1,328,000

$43,292,000

$26,583,000

'

'

$2,014,000

$101,000

$1,328,000

$43,292,000

$26,583,000

$53,100,000

$1,501,000

'

'

Derivatives

'

'

'

'

'

'

'

'

'

'

'

'

776,000

546,000

'

'

'

'

'

'

'

776,000

546,000

Liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivatives

'

'

'

'

'

'

'

'

'

'

'

'

1,737,000

353,000

'

'

'

'

'

'

'

1,737,000

353,000

Retention bonus liability

19,807,000

'

19,807,000

'

19,807,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized Gain (Loss) on derivatives recognized in earnings

$300,000

$1,800,000

$900,000

$2,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details) (USD $)

3 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Other Current Assets [Member]

Other Current Assets [Member]

Other Current Liabilities [Member]

Other Current Liabilities [Member]

Other Current Assets [Member]

Other Current Assets [Member]

Other Current Liabilities [Member]

Other Current Liabilities [Member]

Derivative Financial Instruments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Longest outstanding maturity for derivative contracts at the most recent balance sheet date.

'15 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Other Comprehensive Income Pretax

($1,500,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional Amount of Derivatives

78,900,000

107,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Fair Value, Net

-1,000,000

200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Asset derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Asset, Fair Value, Net

776,000

546,000

'

'

'

'

'

'

'

'

237,000

395,000

'

'

539,000

151,000

'

'

Liability derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Liability, Fair Value

-1,737,000

-353,000

'

'

'

'

'

'

'

'

'

'

-1,725,000

-159,000

'

'

-12,000

-194,000

Summary Of Hedged Derivative Instruments Impact On Results Of Operations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) recognized in OCI (effective portion)

'

'

-431,000

-374,000

-2,062,000

-1,058,000

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) reclassified from OCI into income (effective portion)

'

'

'

'

'

'

-394,000

35,000

-332,000

266,000

'

'

'

'

'

'

'

'

Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)

'

'

'

'

'

'

2,000

1,000

3,000

0

'

'

'

'

'

'

'

'

Summary Of Non Hedged Derivative Instruments Impact On Results Of Operations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments

'

'

'

'

'

'

-85,000

2,455,000

520,000

2,074,000

'

'

'

'

'

'

'

'

Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments

$27,400,000

$33,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Retirement_Benefits_Details

Retirement Benefits (Details) (USD $)

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

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 Plans [Member]

Other Postretirement Plans [Member]

Other Postretirement Plans [Member]

Other Postretirement Plans [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

'

'

'

'

'

'

'

'

'

$17,538,000

$17,802,000

$35,326,000

$35,696,000

$3,074,000

$3,231,000

$6,039,000

$6,463,000

$366,000

$444,000

$734,000

$887,000

'

Interest cost

'

'

'

'

'

'

'

'

'

35,212,000

34,036,000

70,566,000

67,983,000

10,249,000

9,734,000

20,096,000

19,467,000

2,220,000

2,206,000

4,442,000

4,412,000

'

Expected return on plan assets

'

'

'

'

'

'

'

'

'

-47,181,000

-47,000,000

-94,407,000

-93,234,000

-11,532,000

-10,859,000

-22,589,000

-21,719,000

-28,000

-33,000

-56,000

-65,000

'

Amortization of net loss/(gain)

'

'

'

'

'

'

'

'

'

5,475,000

11,593,000

11,124,000

23,068,000

2,250,000

1,510,000

4,419,000

3,021,000

-433,000

99,000

-863,000

198,000

'

Amortization of prior service (credit)/cost

'

'

'

'

'

'

'

'

'

-2,095,000

-2,094,000

-4,189,000

-4,188,000

11,000

10,000

21,000

21,000

-1,751,000

-2,062,000

-3,503,000

-4,123,000

'

Net periodic benefit cost/(income)

'

'

'

'

'

'

'

'

'

8,949,000

14,337,000

18,420,000

29,325,000

4,052,000

3,626,000

7,986,000

7,253,000

374,000

654,000

754,000

1,309,000

'

Employer Contributions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Contributions by Employer

'

'

'

'

'

'

'

'

'

'

'

61,100,000

'

'

'

19,700,000

'

'

'

'

'

11,900,000

Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year

'

'

'

'

'

'

'

'

'

12,100,000

'

12,100,000

'

18,300,000

'

18,300,000

'

'

'

'

'

'

Defined Contribution Pension And Other Postretirement Plans [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Contribution Plan Contributions By Employer

'

$7,500,000

$7,400,000

$13,500,000

$13,000,000

$4,100,000

$5,700,000

$9,900,000

$11,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Commitments_and_Contingen1

Debt, Commitments and Contingent Liabilities (Details) (USD $)

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Millions, unless otherwise specified

Dugan Action [Member]

Dugan Action [Member]

Allen Action [Member]

Allen Action [Member]

Pao Action [Member]

Pao Action [Member]

Acument [Member]

Acument [Member]

S M I C [Member]

P C I C [Member]

Senior Credit Facility [Member]

Senior Credit Facility [Member]

Senior Credit Facility [Member]

Standby Letter of Credit [Member]

Standby Letter of Credit [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Captive Insurance Companies [Member]

Other Existing Or Potential Business Obligations [Member]

LIBOR

LIBOR

Bank Base Rate

Bank Base Rate

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

'

'

'

'

'

'

'

'

'

'

$500

$500

'

'

'

'

'

'

'

'

'

Line Of Credit Facility Additional Borrowing Capacity

'

'

'

'

'

'

'

'

'

'

'

'

250

250

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Interest Rate Description

'

'

'

'

'

'

'

'

'

'

'

'

'a spread to either LIBOR or the Prime Rate

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

0.18%

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Collateral

'

'

'

'

'

'

'

'

'

'

'

'

'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 Facility, 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 Facility, Covenant Compliance

'

'

'

'

'

'

'

'

'

'

'

'

'

'As of December 31, 2013, we were in compliance with our covenants.

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Amount Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

35

35

'

21.4

1.5

'

'

'

'

'

'

Long-term Debt, Maturities, Repayment Terms

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'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.

'

'

'

'

'

Debt, Weighted Average Interest Rate

'

'

'

'

'

'

'

'

'

'

'

'

1.98%

1.98%

1.51%

'

'

1.43%

1.49%

'

'

'

'

Term loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

237.5

'

'

'

'

'

Debt Instrument, Maturity Date

'

'

'

'

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'

'

'

'

'

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'

'

'

1-Jun-17

'

'

'

'

'

Percentage spread to base index rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.75%

1.25%

0.75%

0.25%

Original amount borrowed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

250

'

'

'

'

'

Malpractice Insurance [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Professional Liability Insurance Coverage, per Claim

'

'

'

'

'

'

'

'

'

'

'

'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.

'

'

'

'

'

'

'

'

'

'

'

Reinsurance Coverage Description

'

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'

'

'

'

'

'

'

'

'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 Coverage Results Description

'

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'

'

'

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'

'

'

'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.

'

'

'

'

'

'

'

'

'

'

'

'

Malpractice Insurance, Percentage of Ownership in Captive Insurer

'

'

'

'

'

'

'

'

'

'

'

72.86%

'

'

'

'

'

'

'

'

'

'

'

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.

'

'

'

'

'

'

'

'

'

'

'

'

Incurred but not reported professional claims liability

183.2

184.1

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period of loss occurence

'

'

'

'

'

'

'

'

'

'December 1, 2007 and April 30, 2010

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Terms of settlement agreement

'

'

'

'During the mediation 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 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. On September 24, 2013, the court preliminarily certified the settlement class and preliminarily approved the parties’ proposed settlement. The settlement remains subject to several conditions, including sufficient participation of the individual settlement class members and final judicial approval of the settlement terms.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proposed settlement amount

'

'

10

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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 allege variously that there either was a promise that Towers Perrin would remain privately owned in perpetuity (Dugan Action) or that in the event of a change to public ownership plaintiffs would receive compensation (Allen and Pao Actions). Plaintiffs allege 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 assert 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.

'

'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 allege variously that there either was a promise that Towers Perrin would remain privately owned in perpetuity (Dugan Action) or that in the event of a change to public ownership plaintiffs would receive compensation (Allen and Pao Actions). Plaintiffs allege 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 assert 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.

'

'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 allege variously that there either was a promise that Towers Perrin would remain privately owned in perpetuity (Dugan Action) or that in the event of a change to public ownership plaintiffs would receive compensation (Allen and Pao Actions). Plaintiffs allege 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 assert 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.

'

'

'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. Acument seeks to recover an unspecified amount comprised primarily of loss of principal, investment losses, fees paid for consulting services, and attorney’s fees. 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. The discovery phase of these legal proceedings has commenced. 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. The dispute remains extant. At this time, no material loss is probable in excess of amounts currently accrued.

'

'

'

'

'

'

'

'

'

'

'

'

'

Misappropriation Estimate

'

'

'

'

'

'

'

'

'

553

'

'

'

'

'

'

'

'

'

'

'

'

'

Recovery To Date

'

'

'

'

'

'

'

'

'

$39.70

'

'

'

'

'

'

'

'

'

'

'

'

'

Variable_Interest_Entities_Det

Variable Interest Entities (Details) (USD $)	6 Months Ended
	Dec. 31, 2013
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	$277,070,000
Variable Interest Entities [Abstract]	'
Assets under management	1,500,000,000
Increase Decrease In Temporary Equity [Roll Forward]	'
Balance as of	0
Redeemable non-controlling interest from consolidated variable interest entity	273,722,000
Mark-to-market gains on investments held by consolidated variable interest entity	3,348,000
Balance as of	277,070,000
Fair Value, Measurements, Recurring [Member] | Commodities	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	8,339,000
Fair Value, Measurements, Recurring [Member] | Credit Long Short [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	18,775,000
Fair Value, Measurements, Recurring [Member] | Currency [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	6,822,000
Fair Value, Measurements, Recurring [Member] | Discretionary Macro [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	29,924,000
Fair Value, Measurements, Recurring [Member] | Equity Long/Short	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	46,517,000
Fair Value, Measurements, Recurring [Member] | Managed Futures [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	12,296,000
Fair Value, Measurements, Recurring [Member] | Multi Asset [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	20,244,000
Fair Value, Measurements, Recurring [Member] | Multi Strategy	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	24,550,000
Fair Value, Measurements, Recurring [Member] | Reinsurance [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	41,237,000
Fair Value, Measurements, Recurring [Member] | Smart Beta [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	28,064,000
Fair Value, Measurements, Recurring [Member] | Statistical Arbitrage [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	15,892,000
Fair Value, Measurements, Recurring [Member] | Systemic Trading [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	24,411,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	235,863,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodities	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	8,339,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Currency [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	6,822,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Discretionary Macro [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	29,924,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Long/Short	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	29,347,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Managed Futures [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	12,296,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Multi Asset [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	20,244,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Multi Strategy	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	24,550,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Reinsurance [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	35,974,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Smart Beta [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	28,064,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Statistical Arbitrage [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	15,892,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Systemic Trading [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	24,411,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	41,208,000
Level Three [Roll Forward]	'
Beginning balance as of	0
Net actual return on assets still held at the end of the year	1,873,000
Net purchases, sales and settlements	39,335,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit Long Short [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	18,775,000
Level Three [Roll Forward]	'
Beginning balance as of	0
Net actual return on assets still held at the end of the year	677,000
Net purchases, sales and settlements	18,098,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Long/Short	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	17,170,000
Level Three [Roll Forward]	'
Beginning balance as of	0
Net actual return on assets still held at the end of the year	1,084,000
Net purchases, sales and settlements	16,086,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Reinsurance [Member]	'
Fund Strategy [Abstract]	'
Investments of consolidated variable interest entity	5,263,000
Level Three [Roll Forward]	'
Beginning balance as of	0
Net actual return on assets still held at the end of the year	112,000
Net purchases, sales and settlements	$5,151,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income/(Loss) (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	($299,464,000)	'
After tax - Net current-period other comprehensive income	21,268,000	-7,873,000	94,458,000	30,860,000
After tax - Accumulated OCI as of	-204,392,000	'	-204,392,000	'
Foreign currency translation	'	'	'	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	-131,096,000	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	89,346,000	'
After tax - Net current-period other comprehensive income	'	'	89,346,000	'
After tax - Accumulated OCI as of	-41,750,000	'	-41,750,000	'
Hedge effectiveness	'	'	'	'
Before tax - AOCI	'	'	'	'
Before tax - Accumulated OCI as of	'	'	237,000	'
Before tax - Other comprehensive income/(loss) before reclassifications	'	'	-2,062,000	'
Before tax - Amounts reclassified from accumulated other comprehensive income	'	'	332,000	'
Before tax - Net current-period other comprehensive income	'	'	-1,730,000	'
Before tax - Accumulated OCI as of	-1,493,000	'	-1,493,000	'
Tax - AOCI	'	'	'	'
Tax - Accumulated OCI as of	'	'	-105,000	'
Tax - Other comprehensive income/(loss) before reclassifications	'	'	836,000	'
Tax - Amounts reclassified from accumulated other comprehensive income	'	'	-136,000	'
Tax - Net current-period other comprehensive income	'	'	700,000	'
Tax - Accumulated OCI as of	595,000	'	595,000	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	132,000	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	-1,226,000	'
After tax - Amounts reclassified from accumulated other comprehensive income	'	'	196,000	'
After tax - Net current-period other comprehensive income	'	'	-1,030,000	'
After tax - Accumulated OCI as of	-898,000	'	-898,000	'
Available-for-sale securities	'	'	'	'
Before tax - AOCI	'	'	'	'
Before tax - Accumulated OCI as of	'	'	547,000	'
Before tax - Other comprehensive income/(loss) before reclassifications	'	'	298,000	'
Before tax - Net current-period other comprehensive income	'	'	298,000	'
Before tax - Accumulated OCI as of	845,000	'	845,000	'
Tax - AOCI	'	'	'	'
Tax - Accumulated OCI as of	'	'	-134,000	'
Tax - Other comprehensive income/(loss) before reclassifications	'	'	-73,000	'
Tax - Net current-period other comprehensive income	'	'	-73,000	'
Tax - Accumulated OCI as of	-207,000	'	-207,000	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	413,000	'
After tax - Other comprehensive income/(loss) before reclassifications	'	'	225,000	'
After tax - Net current-period other comprehensive income	'	'	225,000	'
After tax - Accumulated OCI as of	638,000	'	638,000	'
Defined pension and post-retirement benefit costs	'	'	'	'
Before tax - AOCI	'	'	'	'
Before tax - Accumulated OCI as of	'	'	-233,817,000	'
Before tax - Amounts reclassified from accumulated other comprehensive income	'	'	8,383,000	'
Before tax - Net current-period other comprehensive income	'	'	8,383,000	'
Before tax - Accumulated OCI as of	-225,434,000	'	-225,434,000	'
Tax - AOCI	'	'	'	'
Tax - Accumulated OCI as of	'	'	64,904,000	'
Tax - Amounts reclassified from accumulated other comprehensive income	'	'	-1,852,000	'
Tax - Net current-period other comprehensive income	'	'	-1,852,000	'
Tax - Accumulated OCI as of	63,052,000	'	63,052,000	'
After tax - AOCI	'	'	'	'
After tax - Accumulated OCI as of	'	'	-168,913,000	'
After tax - Amounts reclassified from accumulated other comprehensive income	'	'	6,531,000	'
After tax - Net current-period other comprehensive income	'	'	6,531,000	'
After tax - Accumulated OCI as of	($162,382,000)	'	($162,382,000)	'

Restricted_Stock_Details

Restricted Stock (Details) (EMB [Member], USD $)	3 Months Ended
	Mar. 31, 2011
Common Class B-3 [Member]	'
Business Acquisition [Line Items]	'
Shares issued as consideration for purchase of EMB	113,858
Common Stock, Par or Stated Value Per Share	$0.01
Common Class B-4 [Member]	'
Business Acquisition [Line Items]	'
Shares issued as consideration for purchase of EMB	113,858
Common Stock, Par or Stated Value Per Share	$0.01

Restricted_Stock_Details1

Restricted Stock (Details1) (Common Class B-4 [Member])	3 Months Ended
	Dec. 31, 2013
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	'2014-01-01

Restricted_Stock_Details2

Restricted Stock (Details2) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Mar. 31, 2010	Dec. 31, 2012
					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	'	'	'	'	'	4,248,984	'
Compensation expense	'	'	'	'	$4	'	$8
Discontinued operations - compensation expense	$1	$0.10	$1.20	$0.30	$0.50	'	$1

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

3 Months Ended

6 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2012

Jun. 30, 2012

Jun. 30, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2010

Dec. 31, 2013

Dec. 31, 2013

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

2013 SEP

2013 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]

Liazon RSUs [Member]

Liazon RSUs [Member]

Maximum [Member]

Minimum [Member]

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Description of Restricted Stock Units

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'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.

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Restricted Stock Units granted during the period

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62,651

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121,075

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86,188

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30,192

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131,286

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147,503

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577,191

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10,251

16,027

22,149

70,533

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Restricted Stock Units vested in the period

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288,595

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Restricted Stock Units, balance not yet vested

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288,595

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Forfeiture rate

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5.00%

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5.00%

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5.00%

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Compensation expense

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$1.50

$2.70

$0.20

$2.80

$1

$2.80

($1)

$1.20

($0.50)

$1.50

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$0.40

$0.70

$1.60

$3.40

$0.50

$1.20

$1

$2.30

$0.40

$1.10

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$0.80

$2.20

$0.20

$0.20

$0.70

$0.70

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$0.30

$0.30

Closing stock price on date of grant

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$106

$106

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$54.59

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$54.59

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$63.94

$63.73

$81.73

$81.73

$91.43

$91.43

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$53.93

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$53.93

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Discontinued operations - compensation expense

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0.1

1.2

0.3

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Vested Stock Based Compensation Awards Acquired Value

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5.7

5.7

Unvested Stock Based Compensation Awards Acquired Value

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$2.10

$2.10

ShareBased_Compensation_Detail1

Share-Based Compensation (Details 1) (USD $)	3 Months Ended			6 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012
Stock Options Explanatory Disclosures [Line Items]	'	'	'	'	'
Options granted previously and assumed by a business acquirer	'	'	377,614	'	'
Extend Health Vested Options [Member]	'	'	'	'	'
Stock Options Explanatory Disclosures [Line Items]	'	'	'	'	'
Fair value of vested stock options acquired	'	'	$11.20	'	'
Extend Health Unvested Options [Member]	'	'	'	'	'
Stock Options Explanatory Disclosures [Line Items]	'	'	'	'	'
Compensation expense	0.4	1.5	'	0.9	3.9
Forfeiture rate	'	'	10.00%	'	'
Fair value of vested stock options acquired	'	'	7.9	'	'
Liazon Unvested Options [Member]	'	'	'	'	'
Stock Options Explanatory Disclosures [Line Items]	'	'	'	'	'
Compensation expense	0.1	'	'	'	'
Fair value of vested stock options acquired	1.7	'	'	1.7	'
Liazon Vested Options [Member]	'	'	'	'	'
Stock Options Explanatory Disclosures [Line Items]	'	'	'	'	'
Options granted previously and assumed by a business acquirer	37,162	'	'	'	'
Compensation expense	'	'	'	0.1	'
Fair value of vested stock options acquired	$2.20	'	'	$2.20	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Provision For Income Taxes [Abstract]	'	'	'	'
Income Tax Expense (Benefit)	$42,283,000	$36,126,000	$57,091,000	$64,395,000
Effective Tax Rate [Abstract]	'	'	'	'
Effective Income Tax Rate, Continuing Operations	'	'	24.50%	33.30%
Uncertain tax positions tax rate impact	'	'	-7.20%	'
Change in tax rate - tax rate impact	'	'	-1.50%	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]	'	'	'	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	2,200,000	'	2,200,000	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	$16,100,000	'	$16,100,000	'

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	$854,574,000	$883,728,000	$1,642,345,000	$1,644,509,000
Net operating income	228,664,000	277,035,000	439,209,000	456,171,000
Benefits [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	487,337,000	519,418,000	944,366,000	976,546,000
Net operating income	148,349,000	185,817,000	285,887,000	321,671,000
Risk And Financial Services [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	161,178,000	172,405,000	302,961,000	321,905,000
Net operating income	34,442,000	41,268,000	56,929,000	64,524,000
Talent And Rewards [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	170,323,000	176,185,000	323,892,000	316,420,000
Net operating income	53,096,000	60,078,000	97,160,000	85,869,000
Exchange Solutions [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Revenue (net of reimbursable expenses)	35,736,000	15,720,000	71,126,000	29,638,000
Net operating income	($7,223,000)	($10,128,000)	($767,000)	($15,893,000)

Segment_Information_Details_1

Segment Information (Details 1) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenue:	'	'	'	'
Total segment revenue	$854,574,000	$883,728,000	$1,642,345,000	$1,644,509,000
Reimbursable expenses and other	33,581,000	27,293,000	55,749,000	59,747,000
Revenue	888,155,000	911,021,000	1,698,094,000	1,704,256,000
Net operating income:	'	'	'	'
Total segment net operating income	228,664,000	277,035,000	439,209,000	456,171,000
Differences in allocation methods	6,869,000	-8,881,000	16,855,000	5,994,000
Amortization of intangibles	-18,691,000	-19,727,000	-37,583,000	-38,822,000
Transaction and integration expenses	-808,000	-9,152,000	-808,000	-18,425,000
Stock-based compensation	-1,782,000	-10,204,000	-5,345,000	-17,828,000
Discretionary compensation	-74,085,000	-98,202,000	-150,207,000	-170,782,000
Payroll tax on discretionary compensation	-4,075,000	-5,378,000	-8,643,000	-9,684,000
Other, net	-7,666,000	-11,072,000	-22,631,000	-12,931,000
Income from operations	$128,426,000	$114,419,000	$230,847,000	$193,693,000

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Basic EPS	'	'	'	'
Income from continuing operations	$90,328,000	$78,195,000	$176,072,000	$129,235,000
Less: Income (loss) attributable to non-controlling interests	3,737,000	-1,683,000	3,711,000	-2,624,000
Income from continuing operations attributable to controlling interests	86,591,000	79,878,000	172,361,000	131,859,000
Less: Income allocated to participating securities	0	-1,846,000	0	-3,074,000
Income from continuing operations available to common stockholders	$86,591,000	$78,032,000	$172,361,000	$128,785,000
Shares	70,809,000	69,594,000	70,805,000	69,700,000
Per share amount	$1.22	$1.12	$2.43	$1.85
Diluted EPS	'	'	'	'
Share-based compensation awards, shares	404,000	590,000	325,000	545,000
Shares	71,213,000	70,184,000	71,130,000	70,245,000
Per share amount	$1.21	$1.11	$2.42	$1.83