Financial Information for Issuers and Other Guarantor Subsidiaries (Tables)

9 Months Ended

Sep. 30, 2018

Condensed Financial Information Of Parent Company Only Disclosure [Abstract]

Unaudited Condensed Consolidated Statement of Comprehensive Income

Unaudited Condensed Consolidating Statement of Comprehensive Income

	Three months ended September 30, 2018
	Willis Towers Watson plc			Willis North America			Trinity Acquisition plc			Other guarantors			Non-guarantors			Eliminations			Consolidated
Revenue	$	—		$	7		$	—		$	1		$	1,851		$	—		$	1,859
Costs of providing services
Salaries and benefits		1			15			—			1			1,221			—			1,238
Other operating expenses		1			7			—			34			332			—			374
Depreciation		—			—			—			1			52			—			53
Amortization		—			—			—			1			128			(2	)		127
Restructuring costs		—			—			—			—			—			—			—
Transaction and integration expenses		—			(1	)		—			—			51			—			50
Total costs of providing services		2			21			—			37			1,784			(2	)		1,842
(Loss)/income from operations		(2	)		(14	)		—			(36	)		67			2			17
Intercompany income/(expense)		—			4			33			58			(95	)		—			—
Interest expense		(7	)		(13	)		(28	)		—			(3	)		—			(51	)
Other income, net		—			—			—			—			70			—			70
(LOSS)/INCOME FROM OPERATIONS    BEFORE INCOME TAXES		(9	)		(23	)		5			22			39			2			36
Benefit from/(provision for) income taxes		—			16			(1	)		(5	)		—			—			10
Equity account for subsidiaries		53			(8	)		(22	)		33			—			(56	)		—
NET INCOME/(LOSS)		44			(15	)		(18	)		50			39			(54	)		46
Income attributable to non-controlling    interests		—			—			—			—			(2	)		—			(2	)
NET INCOME/(LOSS) ATTRIBUTABLE    TO WILLIS TOWERS WATSON	$	44		$	(15	)	$	(18	)	$	50		$	37		$	(54	)	$	44
Comprehensive income/(loss) before non-    controlling interests	$	22		$	(18	)	$	(41	)	$	29		$	22		$	10		$	24
Comprehensive income attributable to non-    controlling interests		—			—			—			—			(2	)		—			(2	)
Comprehensive income/(loss) attributable to   Willis Towers Watson	$	22		$	(18	)	$	(41	)	$	29		$	20		$	10		$	22

Unaudited Condensed Consolidating Statement of Comprehensive Income

	Three months ended September 30, 2017
	Willis Towers Watson plc			Willis North America			Trinity Acquisition plc			Other guarantors			Non-guarantors			Eliminations			Consolidated
Revenue	$	—		$	3		$	—		$	—		$	1,849		$	—		$	1,852
Costs of providing services
Salaries and benefits		2			20			—			—			1,190			—			1,212
Other operating expenses		—			6			1			29			330			—			366
Depreciation		—			—			—			2			52			—			54
Amortization		—			—			—			1			143			(3	)		141
Restructuring costs		—			1			—			1			29			—			31
Transaction and integration expenses		—			4			—			2			68			—			74
Total costs of providing services		2			31			1			35			1,812			(3	)		1,878
(Loss)/income from operations		(2	)		(28	)		(1	)		(35	)		37			3			(26	)
Intercompany (expense)/income		—			(2	)		30			93			(121	)		—			—
Interest expense		(8	)		(9	)		(25	)		—			(5	)		—			(47	)
Other income, net		—			—			—			48			187			(197	)		38
(LOSS)/INCOME FROM OPERATIONS    BEFORE INCOME TAXES		(10	)		(39	)		4			106			98			(194	)		(35	)
Benefit from/(provision for) income taxes		1			4			—			(10	)		(14	)		—			(19	)
Equity account for subsidiaries		(45	)		(248	)		(108	)		(131	)		—			532			—
NET LOSS		(54	)		(283	)		(104	)		(35	)		84			338			(54	)
Income attributable to non-controlling    interests		—			—			—			—			—			—			—
NET LOSS ATTRIBUTABLE    TO WILLIS TOWERS WATSON	$	(54	)	$	(283	)	$	(104	)	$	(35	)	$	84		$	338		$	(54	)
Comprehensive income/(loss) before non-    controlling interests	$	46		$	(215	)	$	2		$	62		$	249		$	(110	)	$	34
Comprehensive income attributable to non-    controlling interests		—			—			—			—			12			—			12
Comprehensive income/(loss) attributable to   Willis Towers Watson	$	46		$	(215	)	$	2		$	62		$	261		$	(110	)	$	46

Unaudited Condensed Consolidating Statement of Comprehensive Income

	Nine months ended September 30, 2018
	Willis Towers Watson plc			Willis North America			Trinity Acquisition plc			Other guarantors			Non-guarantors			Eliminations			Consolidated
Revenue	$	—		$	14		$	—		$	—		$	6,127		$	—		$	6,141
Costs of providing services
Salaries and benefits		2			51			—			—			3,837			—			3,890
Other operating expenses		3			32			—			128			1,040			—			1,203
Depreciation		—			—			—			3			150			—			153
Amortization		—			—			—			2			408			(2	)		408
Restructuring costs		—			—			—			—			—			—			—
Transaction and integration expenses		—			4			—			1			143			—			148
Total costs of providing services		5			87			—			134			5,578			(2	)		5,802
(Loss)/income from operations		(5	)		(73	)		—			(134	)		549			2			339
Intercompany (expense)/income		—			(10	)		93			247			(330	)		—			—
Interest expense		(22	)		(35	)		(82	)		—			(15	)		—			(154	)
Other income, net		—			—			—			2			187			—			189
(LOSS)/INCOME FROM OPERATIONS    BEFORE INCOME TAXES		(27	)		(118	)		11			115			391			2			374
Benefit from/(provision for) income taxes		—			29			(2	)		(21	)		(48	)		—			(42	)
Equity account for subsidiaries		344			(50	)		112			240			—			(646	)		—
NET INCOME/(LOSS)		317			(139	)		121			334			343			(644	)		332
Income attributable to non-controlling    interests		—			—			—			—			(15	)		—			(15	)
NET INCOME/(LOSS) ATTRIBUTABLE    TO WILLIS TOWERS WATSON	$	317		$	(139	)	$	121		$	334		$	328		$	(644	)	$	317
Comprehensive income/(loss) before non-    controlling interests	$	203		$	(193	)	$	7		$	220		$	223		$	(242	)	$	218
Comprehensive income attributable to non-    controlling interests		—			—			—			—			(15	)		—			(15	)
Comprehensive income/(loss) attributable to    Willis Towers Watson	$	203		$	(193	)	$	7		$	220		$	208		$	(242	)	$	203

Unaudited Condensed Consolidating Statement of Comprehensive Income

	Nine months ended September 30, 2017
	Willis Towers Watson plc			Willis North America			Trinity Acquisition plc			Other guarantors			Non-guarantors			Eliminations			Consolidated
Revenue	$	—		$	14		$	—		$	—		$	6,110		$	—		$	6,124
Costs of providing services
Salaries and benefits		4			40			—			—			3,632			—			3,676
Other operating expenses		2			16			1			73			1,066			—			1,158
Depreciation		—			—			—			5			146			—			151
Amortization		—			—			—			3			441			(3	)		441
Restructuring costs		—			1			—			5			79			—			85
Transaction and integration expenses		—			6			—			32			139			—			177
Total costs of providing services		6			63			1			118			5,503			(3	)		5,688
(Loss)/income from operations		(6	)		(49	)		(1	)		(118	)		607			3			436
Intercompany income/(expense)		—			16			89			261			(366	)		—			—
Interest expense		(23	)		(25	)		(76	)		—			(15	)		—			(139	)
Other income, net		—			—			—			48			264			(197	)		115
(LOSS)/INCOME FROM OPERATIONS    BEFORE INCOME TAXES		(29	)		(58	)		12			191			490			(194	)		412
Benefit from/(provision for) income taxes		2			7			(1	)		(18	)		(63	)		—			(73	)
Equity account for subsidiaries		350			(23	)		117			169			—			(613	)		—
NET INCOME/(LOSS)		323			(74	)		128			342			427			(807	)		339
Income attributable to non-controlling    interests		—			—			—			—			(16	)		—			(16	)
NET INCOME/(LOSS) ATTRIBUTABLE    TO WILLIS TOWERS WATSON	$	323		$	(74	)	$	128		$	342		$	411		$	(807	)	$	323
Comprehensive income before non-    controlling interests	$	531		$	68		$	336		$	552		$	687		$	(1,628	)	$	546
Comprehensive income attributable to non-    controlling interests		—			—			—			—			(15	)		—			(15	)
Comprehensive income attributable to Willis    Towers Watson	$	531		$	68		$	336		$	552		$	672		$	(1,628	)	$	531

Unaudited Condensed Consolidated Balance Sheet

Unaudited Condensed Consolidating Balance Sheet

	As of September 30, 2018
	Willis Towers Watson plc		Willis North America		Trinity Acquisition plc		Other guarantors		Non-guarantors			Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	—	$	—	$	—	$	—	$	931		$	—		$	931
Fiduciary assets		—		—		—		—		13,146			—			13,146
Accounts receivable, net		—		6		—		—		2,126			—			2,132
Prepaid and other current assets		—		326		1		25		363			(168	)		547
Total current assets		—		332		1		25		16,566			(168	)		16,756
Intercompany receivables, net		6,178		—		1,781		—		—			(7,959	)		—
Fixed assets, net		—		—		—		26		918			—			944
Goodwill		—		—		—		—		10,457			—			10,457
Other intangible assets, net		—		—		—		58		3,429			(58	)		3,429
Pension benefits assets		—		—		—		—		955			—			955
Other non-current assets		6		73		2		25		480			(86	)		500
Total non-current assets		6,184		73		1,783		109		16,239			(8,103	)		16,285
Investments in subsidiaries		4,452		6,928		2,144		8,682		—			(22,206	)		—
TOTAL ASSETS	$	10,636	$	7,333	$	3,928	$	8,816	$	32,805		$	(30,477	)	$	33,041
LIABILITIES AND EQUITY
Fiduciary liabilities	$	—	$	—	$	—	$	—	$	13,146		$	—		$	13,146
Deferred revenue and accrued expenses		1		—		—		5		1,459			—			1,465
Short-term debt and current portion of    long-term debt		—		—		—		—		186			—			186
Other current liabilities		89		21		14		11		739			(116	)		758
Total current liabilities		90		21		14		16		15,530			(116	)		15,555
Intercompany payables, net		—		864		—		4,041		3,054			(7,959	)		—
Long-term debt		497		1,834		2,353		—		(186	)		—			4,498
Liability for pension benefits		—		—		—		—		1,087			—			1,087
Deferred tax liabilities		—		—		—		—		781			(103	)		678
Provision for liabilities		—		120		—		—		465			—			585
Other non-current liabilities		—		—		1		2		445			—			448
Total non-current liabilities		497		2,818		2,354		4,043		5,646			(8,062	)		7,296
TOTAL LIABILITIES		587		2,839		2,368		4,059		21,176			(8,178	)		22,851
REDEEMABLE NON-CONTROLLING    INTEREST		—		—		—		—		27			—			27
EQUITY
Total Willis Towers Watson shareholders’    equity		10,049		4,494		1,560		4,757		11,488			(22,299	)		10,049
Non-controlling interests		—		—		—		—		114			—			114
Total equity		10,049		4,494		1,560		4,757		11,602			(22,299	)		10,163
TOTAL LIABILITIES AND EQUITY	$	10,636	$	7,333	$	3,928	$	8,816	$	32,805		$	(30,477	)	$	33,041

Unaudited Condensed Consolidating Balance Sheet

	As of December 31, 2017
	Willis Towers Watson plc		Willis North America		Trinity Acquisition plc		Other guarantors		Non-guarantors		Eliminations			Consolidated
ASSETS
Cash and cash equivalents	$	2	$	—	$	—	$	1	$	1,027	$	—		$	1,030
Fiduciary assets		—		—		—		—		12,155		—			12,155
Accounts receivable, net		—		4		—		—		2,242		—			2,246
Prepaid and other current assets		—		267		1		44		264		(146	)		430
Total current assets		2		271		1		45		15,688		(146	)		15,861
Intercompany receivables, net		6,202		—		2,501		—		—		(8,703	)		—
Fixed assets, net		—		—		—		25		960		—			985
Goodwill		—		—		—		—		10,519		—			10,519
Other intangible assets, net		—		—		—		60		3,882		(60	)		3,882
Pension benefits assets		—		—		—		—		764		—			764
Other non-current assets		—		115		3		31		388		(90	)		447
Total non-current assets		6,202		115		2,504		116		16,513		(8,853	)		16,597
Investments in subsidiaries		4,506		6,125		1,918		8,425		—		(20,974	)		—
TOTAL ASSETS	$	10,710	$	6,511	$	4,423	$	8,586	$	32,201	$	(29,973	)	$	32,458
LIABILITIES AND EQUITY
Fiduciary liabilities	$	—	$	—	$	—	$	—	$	12,155	$	—		$	12,155
Deferred revenue and accrued expenses		—		19		—		7		1,685		—			1,711
Short-term debt and current portion of    long-term debt		—		—		—		—		85		—			85
Other current liabilities		87		83		33		27		724		(150	)		804
Total current liabilities		87		102		33		34		14,649		(150	)		14,755
Intercompany payables, net		—		787		—		3,895		4,021		(8,703	)		—
Long-term debt		497		986		2,883		—		84		—			4,450
Liability for pension benefits		—		—		—		—		1,259		—			1,259
Deferred tax liabilities		—		—		—		—		704		(89	)		615
Provision for liabilities		—		120		—		—		438		—			558
Other non-current liabilities		—		19		—		5		520		—			544
Total non-current liabilities		497		1,912		2,883		3,900		7,026		(8,792	)		7,426
TOTAL LIABILITIES		584		2,014		2,916		3,934		21,675		(8,942	)		22,181
REDEEMABLE NON-CONTROLLING    INTEREST		—		—		—		—		28		—			28
EQUITY
Total Willis Towers Watson shareholders’    equity		10,126		4,497		1,507		4,652		10,375		(21,031	)		10,126
Non-controlling interests		—		—		—		—		123		—			123
Total equity		10,126		4,497		1,507		4,652		10,498		(21,031	)		10,249
TOTAL LIABILITIES AND EQUITY	$	10,710	$	6,511	$	4,423	$	8,586	$	32,201	$	(29,973	)	$	32,458

Unaudited Condensed Consolidated Statement of Cash Flows

Unaudited Condensed Consolidating Statement of Cash Flows

	Nine months ended September 30, 2018
	Willis Towers Watson plc			Willis North America			Trinity Acquisition plc			Other guarantors			Non-guarantors			Eliminations			Consolidated
NET CASH FROM/(USED IN)    OPERATING ACTIVITIES	$	637		$	(42	)	$	428		$	(37	)	$	382		$	(652	)	$	716
CASH FLOWS (USED IN)/FROM    INVESTING ACTIVITIES
Additions to fixed assets and software for    internal use		—			—			—			(3	)		(206	)		—			(209	)
Capitalized software costs		—			—			—			—			(41	)		—			(41	)
Acquisitions of operations, net of cash    acquired		—			—			—			—			(8	)		—			(8	)
Net proceeds from sale of operations		—			—			—			—			4			—			4
Other, net		—			—			—			—			14			—			14
(Repayments of)/proceeds from    intercompany investing activities, net		(30	)		2			(42	)		101			(276	)		245			—
Net cash (used in)/from investing    activities	$	(30	)	$	2		$	(42	)	$	98		$	(513	)	$	245		$	(240	)
CASH FLOWS (USED IN)/FROM    FINANCING ACTIVITIES
Net payments on revolving credit facility		—			(143	)		(511	)		—			—			—			(654	)
Senior notes issued		—			998			—			—			—			—			998
Debt issuance costs		—			(8	)		—			—			—			—			(8	)
Repayments of debt		—			—			—			—			(170	)		—			(170	)
Repurchase of shares		(401	)		—			—			—			—			—			(401	)
Proceeds from issuance of shares		21			—			—			—			—			—			21
Payments of deferred and contingent    consideration related to acquisitions		—			—			—			—			(50	)		—			(50	)
Cash paid for employee taxes on    withholding shares		—			—			—			—			(30	)		—			(30	)
Dividends paid		(228	)		—			(332	)		(151	)		(169	)		652			(228	)
Acquisitions of and dividends paid to non-    controlling interests		—			—			—			—			(20	)		—			(20	)
(Repayments of)/proceeds from    intercompany financing activities, net		(1	)		(807	)		457			89			507			(245	)		—
Net cash (used in)/from financing    activities	$	(609	)	$	40		$	(386	)	$	(62	)	$	68		$	407		$	(542	)
DECREASE IN CASH AND CASH    EQUIVALENTS		(2	)		—			—			(1	)		(63	)		—			(66	)
Effect of exchange rate changes on cash    and cash equivalents		—			—			—			—			(33	)		—			(33	)
CASH AND CASH EQUIVALENTS,    BEGINNING OF PERIOD		2			—			—			1			1,027			—			1,030
CASH AND CASH EQUIVALENTS, END    OF PERIOD	$	—		$	—		$	—		$	—		$	931		$	—		$	931

Unaudited Condensed Consolidating Statement of Cash Flows

	Nine months ended September 30, 2017
	Willis Towers Watson plc			Willis North America			Trinity Acquisition plc			Other guarantors			Non-guarantors			Eliminations			Consolidated
NET CASH FROM/(USED IN)    OPERATING ACTIVITIES	$	525		$	(99	)	$	50		$	(490	)	$	774		$	(245	)	$	515
CASH FLOWS FROM/(USED IN)    INVESTING ACTIVITIES
Additions to fixed assets and software for    internal use		—			—			—			(6	)		(192	)		—			(198	)
Capitalized software costs		—			—			—			—			(52	)		—			(52	)
Acquisitions of operations, net of cash    acquired		—			—			—			—			(13	)		—			(13	)
Other, net		—			—			—			—			1			—			1
Proceeds from/(repayments of)    intercompany investing activities, net		1,102			10			(226	)		87			(88	)		(885	)		—
(Increase)/decrease in investment in    subsidiaries		(1,000	)		—			(148	)		1,089			59			—			—
Net cash from/(used in) investing    activities	$	102		$	10		$	(374	)	$	1,170		$	(285	)	$	(885	)	$	(262	)
CASH FLOWS (USED IN)/FROM    FINANCING ACTIVITIES
Net borrowings on revolving credit facility		—			115			560			—			—			—			675
Senior notes issued		—			650			—			—			—			—			650
Proceeds from issuance of other debt		—			—			—			—			32			—			32
Debt issuance costs		—			(5	)		(4	)		—			—			—			(9	)
Repayments of debt		—			(400	)		(219	)		—			(95	)		—			(714	)
Repurchase of shares		(462	)		—			—			—			—			—			(462	)
Proceeds from issuance of shares		44			—			—			—			—			—			44
Payments related to share cancellation		—			—			—			—			(177	)		—			(177	)
Payments of deferred and contingent    consideration related to acquisitions		—			—			—			—			(43	)		—			(43	)
Cash paid for employee taxes on    withholding shares		—			—			—			—			(14	)		—			(14	)
Dividends paid		(209	)		(58	)		—			(58	)		(129	)		245			(209	)
Acquisitions of and dividends paid to non-    controlling interests		—			—			—			—			(19	)		—			(19	)
(Repayments of)/proceeds from    intercompany financing activities, net		—			(213	)		(13	)		(617	)		(42	)		885			—
Net cash (used in)/from financing    activities	$	(627	)	$	89		$	324		$	(675	)	$	(487	)	$	1,130		$	(246	)
INCREASE IN CASH AND    CASH EQUIVALENTS		—			—			—			5			2			—			7
Effect of exchange rate changes on cash and    cash equivalents		—			—			—			—			35			—			35
CASH AND CASH EQUIVALENTS,    BEGINNING OF PERIOD		—			—			—			—			870			—			870
CASH AND CASH EQUIVALENTS,    END OF PERIOD	$	—		$	—		$	—		$	5		$	907		$	—		$	912