Guarantee of Registered Securities (Tables)

9 Months Ended

Sep. 30, 2016

Guarantee of Registered Securities [Abstract]

Condensed Consolidating Statements of Income

Condensed Consolidating Statement of Income

	Three months ended September 30, 2016
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Revenue
Commissions, fees and other	$	—		$	—		$	2,740		$	—		$	2,740
Fiduciary investment income	—			—			6			—			6
Total revenue	—			—			2,746			—			2,746
Expenses
Compensation and benefits	25			4			1,582			—			1,611
Other general expenses	(1		)	3			711			—			713
Total operating expenses	24			7			2,293			—			2,324
Operating (loss) income	(24		)	(7		)	453			—			422
Interest income	—			4			5			(8		)	1
Interest expense	(51		)	(24		)	(3		)	8			(70		)
Intercompany interest income (expense)	3			(135		)	132			—			—
Intercompany other income (expense)	328			(277		)	(51		)	—			—
Other (loss) income	(5		)	1			10			3			9
Income (loss) before taxes	251			(438		)	546			3			362
Income tax expense (benefit)	14			(93		)	127			—			48
Income (loss) before equity in earnings of subsidiaries	237			(345		)	419			3			314
Equity in earnings (loss) of subsidiaries, net of tax	67			209			(136		)	(140		)	—
Net income (loss)	304			(136		)	283			(137		)	314
Less: Net income attributable to noncontrolling interests	—			—			7			—			7
Net income (loss) attributable to Aon shareholders	$	304		$	(136	)	$	276		$	(137	)	$	307

Condensed Consolidating Statement of Income

	Three months ended September 30, 2015
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Revenue
Commissions, fees and other	$	—		$	—		$	2,736		$	—		$	2,736
Fiduciary investment income	—			—			6			—			6
Total revenue	—			—			2,742			—			2,742
Expenses
Compensation and benefits	28			8			1,608			—			1,644
Other general expenses	1			3			681			—			685
Total operating expenses	29			11			2,289			—			2,329
Operating (loss) income	(29		)	(11		)	453			—			413
Interest income	(5		)	4			4			—			3
Interest expense	(33		)	(34		)	(5		)	—			(72		)
Intercompany interest income (expense)	119			(128		)	9			—			—
Intercompany other (expense) income	(57		)	(17		)	74			—			—
Other income	—			2			6			—			8
(Loss) income before taxes	(5		)	(184		)	541			—			352
Income tax (benefit) expense	(1		)	(63		)	113			—			49
(Loss) Income before equity in earnings of subsidiaries	(4		)	(121		)	428			—			303
Equity in earnings of subsidiaries, net of tax	299			355			234			(888		)	—
Net income	295			234			662			(888		)	303
Less: Net income attributable to noncontrolling interests	—			—			8			—			8
Net income attributable to Aon shareholders	$	295		$	234		$	654		$	(888	)	$	295

Condensed Consolidating Statement of Income

	Nine months ended September 30, 2016
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Revenue
Commissions, fees and other	$	—		$	—		$	8,288		$	—		$	8,288
Fiduciary investment income	—			—			16			—			16
Total revenue	—			—			8,304			—			8,304
Expenses
Compensation and benefits	76			10			4,862			—			4,948
Other general expenses	5			7			2,067			—			2,079
Total operating expenses	81			17			6,929			—			7,027
Operating (loss) income	(81		)	(17		)	1,375			—			1,277
Interest income	—			13			14			(21		)	6
Interest expense	(145		)	(78		)	(10		)	21			(212		)
Intercompany interest income (expense)	10			(405		)	395			—			—
Intercompany other income (expense)	217			(292		)	75			—			—
Other (expense) income	(3		)	(8		)	39			(1		)	27
(Loss) income before taxes	(2		)	(787		)	1,888			(1		)	1,098
Income tax (benefit) expense	(33		)	(219		)	429			—			177
Income (loss) before equity in earnings of subsidiaries	31			(568		)	1,459			(1		)	921
Equity in earnings of subsidiaries, net of tax	864			812			244			(1,920		)	—
Net income	895			244			1,703			(1,921		)	921
Less: Net income attributable to noncontrolling interests	—			—			27			—			27
Net income attributable to Aon shareholders	$	895		$	244		$	1,676		$	(1,921	)	$	894

Condensed Consolidating Statement of Income

	Nine months ended September 30, 2015
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Revenue
Commissions, fees and other	$	—		$	—		$	8,378		$	—		$	8,378
Fiduciary investment income	—			—			16			—			16
Total revenue	—			—			8,394			—			8,394
Expenses
Compensation and benefits	85			29			4,866			—			4,980
Other general expenses	10			6			2,267			—			2,283
Total operating expenses	95			35			7,133			—			7,263
Operating (loss) income	(95		)	(35		)	1,261			—			1,131
Interest income	(14		)	10			14			—			10
Interest expense	(87		)	(101		)	(17		)	—			(205		)
Intercompany interest income (expense)	358			(349		)	(9		)	—			—
Intercompany other (expense) income	(162		)	(40		)	202			—			—
Other income	—			10			41			—			51
(Loss) income before taxes	—			(505		)	1,492			—			987
Income tax (benefit) expense	—			(180		)	335			—			155
(Loss) income before equity in earnings of subsidiaries	—			(325		)	1,157			—			832
Equity in earnings of subsidiaries, net of tax	801			925			600			(2,326		)	—
Net income	801			600			1,757			(2,326		)	832
Less: Net income attributable to noncontrolling interests	—			—			31			—			31
Net income attributable to Aon shareholders	$	801		$	600		$	1,726		$	(2,326	)	$	801

Condensed Consolidating Statements of Comprehensive Income

Condensed Consolidating Statement of Comprehensive Income

	Three months ended September 30, 2016
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Net income (loss)	$	304		$	(136	)	$	283		$	(137	)	$	314
Less: Net income attributable to noncontrolling interests	—			—			7			—			7
Net income (loss) attributable to Aon shareholders	304			(136		)	276			(137		)	307
Other comprehensive (loss) income, net of tax:
Change in fair value of financial instruments	—			1			(1		)	—			—
Foreign currency translation adjustments	—			1			(87		)	(3		)	(89		)
Post-retirement benefit obligation	—			7			11			—			18
Total other comprehensive income (loss)	—			9			(77		)	(3		)	(71		)
Equity in other comprehensive loss of subsidiaries, net of tax	(68		)	(81		)	(72		)	221			—
Less: Other comprehensive income attributable to noncontrolling interests	—			—			—			—			—
Total other comprehensive loss attributable to Aon shareholders	(68		)	(72		)	(149		)	218			(71		)
Comprehensive income (loss) attributable to Aon shareholders	$	236		$	(208	)	$	127		$	81		$	236

Condensed Consolidating Statement of Comprehensive Income

	Three months ended September 30, 2015
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Net income	$	295		$	234		$	662		$	(888	)	$	303
Less: Net income attributable to noncontrolling interests	—			—			8			—			8
Net income attributable to Aon shareholders	295			234			654			(888		)	295
Other comprehensive income (loss), net of tax:
Change in fair value of financial instruments	—			(1		)	(9		)	—			(10		)
Foreign currency translation adjustments	—			(24		)	(205		)	—			(229		)
Post-retirement benefit obligation	—			8			10			—			18
Total other comprehensive loss	—			(17		)	(204		)	—			(221		)
Equity in other comprehensive loss of subsidiaries, net of tax	(217		)	(196		)	(213		)	626			—
Less: Other comprehensive loss attributable to noncontrolling interests	—			—			(4		)	—			(4		)
Total other comprehensive loss attributable to Aon shareholders	(217		)	(213		)	(413		)	626			(217		)
Comprehensive income attributable to Aon Shareholders	$	78		$	21		$	241		$	(262	)	$	78

Condensed Consolidating Statement of Comprehensive Income

	Nine months ended September 30, 2016
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Net income	$	895		$	244		$	1,703		$	(1,921	)	$	921
Less: Net income attributable to noncontrolling interests	—			—			27			—			27
Net income attributable to Aon shareholders	895			244			1,676			(1,921		)	894
Other comprehensive (loss) income, net of tax:
Change in fair value of financial instruments	—			1			(12		)	—			(11		)
Foreign currency translation adjustments	(2		)	22			(248		)	1			(227		)
Post-retirement benefit obligation	—			23			(155		)	—			(132		)
Total other comprehensive (loss) income	(2		)	46			(415		)	1			(370		)
Equity in other comprehensive loss of subsidiaries, net of tax	(369		)	(426		)	(380		)	1,175			—
Less: Other comprehensive income attributable to noncontrolling interests	—			—			—			—			—
Total other comprehensive loss attributable to Aon shareholders	(371		)	(380		)	(795		)	1,176			(370		)
Comprehensive income (loss) attributable to Aon shareholders	$	524		$	(136	)	$	881		$	(745	)	$	524

Condensed Consolidating Statement of Comprehensive Income

	Nine months ended September 30, 2015
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
Net income	$	801		$	600		$	1,757		$	(2,326	)	$	832
Less: Net income attributable to noncontrolling interests	—			—			31			—			31
Net income attributable to Aon shareholders	801			600			1,726			(2,326		)	801
Other comprehensive income (loss), net of tax:
Change in fair value of financial instruments	—			—			(11		)	—			(11		)
Foreign currency translation adjustments	—			(43		)	(333		)	—			(376		)
Post-retirement benefit obligation	—			25			37			—			62
Total other comprehensive loss	—			(18		)	(307		)	—			(325		)
Equity in other comprehensive loss of subsidiaries, net of tax	(319		)	(290		)	(308		)	917			—
Less: Other comprehensive loss attributable to noncontrolling interests	—			—			(6		)	—			(6		)
Total other comprehensive loss attributable to Aon shareholders	(319		)	(308		)	(609		)	917			(319		)
Comprehensive income attributable to Aon Shareholders	$	482		$	292		$	1,117		$	(1,409	)	$	482

Condensed Consolidating Statements of Financial Position

Condensed Consolidating Statement of Financial Position

	As of September 30, 2016
					Other
	Aon		Aon		Non-Guarantor		Consolidating
(millions)	plc		Corporation		Subsidiaries		Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	—	$	1,119	$	2,157	$	(2,793	)	$	483
Short-term investments	—		308		155		—			463
Receivables, net	—		—		2,391		—			2,391
Fiduciary assets	—		—		8,710		—			8,710
Intercompany receivables	63		5,740		10,320		(16,123		)	—
Other current assets	—		29		395		—			424
Total Current Assets	63		7,196		24,128		(18,916		)	12,471
Goodwill	—		—		8,452		—			8,452
Intangible assets, net	—		—		2,038		—			2,038
Fixed assets, net	—		—		738		—			738
Non-current deferred tax assets	154		737		164		(777		)	278
Intercompany receivables	381		262		8,712		(9,355		)	—
Prepaid pension	—		6		705		—			711
Other non-current assets	—		126		438		—			564
Investment in subsidiary	12,313		17,115		9		(29,437		)	—
TOTAL ASSETS	$	12,911	$	25,442	$	45,384	$	(58,485	)	$	25,252
LIABILITIES AND EQUITY
Accounts payable and accrued liabilities	$	2,865	$	18	$	1,387	$	(2,793	)	$	1,477
Short-term debt and current portion of long-term debt	244		—		6		—			250
Fiduciary liabilities	—		—		8,710		—			8,710
Intercompany payables	134		13,716		2,273		(16,123		)	—
Other current liabilities	14		61		854					929
Total Current Liabilities	3,257		13,795		13,230		(18,916		)	11,366
Long-term debt	4,213		1,414		283		—			5,910
Non-current deferred tax liabilities	—		—		813		(777		)	36
Pension, other post-retirement and other post-employment liabilities	—		1,275		412		—			1,687
Intercompany payables	—		8,879		476		(9,355		)	—
Other non-current liabilities	7		70		682		—			759
TOTAL LIABILITIES	7,477		25,433		15,896		(29,048		)	19,758
TOTAL AON SHAREHOLDERS' EQUITY	5,434		9		29,428		(29,437		)	5,434
Noncontrolling interests	—		—		60		—			60
TOTAL EQUITY	5,434		9		29,488		(29,437		)	5,494
TOTAL LIABILITIES AND EQUITY	$	12,911	$	25,442	$	45,384	$	(58,485	)	$	25,252

Condensed Consolidating Statement of Financial Position

	As of December 31, 2015
					Other
	Aon		Aon		Non-Guarantor		Consolidating
(millions)	plc		Corporation		Subsidiaries		Adjustments			Consolidated
ASSETS
Cash and cash equivalents	$	—	$	2,083	$	1,242	$	(2,941	)	$	384
Short-term investments	—		209		147		—			356
Receivables, net	1		—		2,733		—			2,734
Fiduciary assets	—		—		9,932		—			9,932
Intercompany receivables	432		1,950		7,957		(10,339		)	—
Other current assets	—		19		310		—			329
Total Current Assets	433		4,261		22,321		(13,280		)	13,735
Goodwill	—		—		8,448		—			8,448
Intangible assets, net	—		—		2,180		—			2,180
Fixed assets, net	—		—		765		—			765
Intercompany receivables	375		526		8,633		(9,534		)	—
Non-current deferred tax assets	154		756		141		(817		)	234
Prepaid pension	—		6		1,027		—			1,033
Other non-current assets	—		119		557		(84		)	592
Investment in subsidiary	11,804		16,534		369		(28,707		)	—
TOTAL ASSETS	$	12,766	$	22,202	$	44,441	$	(52,422	)	$	26,987
LIABILITIES AND EQUITY
Accounts payable and accrued liabilities	$	2,988	$	45	$	1,680	$	(2,941	)	$	1,772
Short-term debt and current portion of long-term debt	—		550		12		—			562
Fiduciary liabilities	—		—		9,932		—			9,932
Intercompany payables	167		9,518		654		(10,339		)	—
Other current liabilities	47		56		716		—			819
Total Current Liabilities	3,202		10,169		12,994		(13,280		)	13,085
Long-term debt	3,451		1,412		275		—			5,138
Non-current deferred tax liabilities	—		—		855		(818		)	37
Pension, other post-retirement and other post-employment liabilities	—		1,313		482		—			1,795
Intercompany payables	—		8,799		735		(9,534		)	—
Other non-current liabilities	7		140		705		(83		)	769
TOTAL LIABILITIES	6,660		21,833		16,046		(23,715		)	20,824
TOTAL AON SHAREHOLDERS' EQUITY	6,106		369		28,338		(28,707		)	6,106
Noncontrolling interests	—		—		57		—			57
TOTAL EQUITY	6,106		369		28,395		(28,707		)	6,163
TOTAL LIABILITIES AND EQUITY	$	12,766	$	22,202	$	44,441	$	(52,422	)	$	26,987

Condensed Consolidating Statements of Cash Flows

Condensed Consolidating Statement of Cash Flows

	Nine months ended September 30, 2016
	Aon			Aon			Other Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES
CASH PROVIDED BY (USED FORD) OPERATING ACTIVITIES	$	219		$	(664	)	$	1,920		$	—		$	1,475
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from investments	—			19			12			—			31
Purchases of investments	—			(25		)	(22		)	—			(47		)
Net purchases of short-term investments - non-fiduciary	—			(99		)	(9		)	—			(108		)
Acquisition of businesses, net of cash acquired	—			—			(198		)	—			(198		)
Proceeds from sale of businesses	—			—			104			—			104
Capital expenditures	—			—			(153		)	—			(153		)
CASH USED FOR INVESTING ACTIVITIES	—			(105		)	(266		)	—			(371		)
CASH FLOWS FROM FINANCING ACTIVITIES
Share repurchase	(1,037		)	—			—			—			(1,037		)
Advances from (to) affiliates	166			356			(670		)	148			—
Issuance of shares for employee benefit plans	(70		)	—			—			—			(70		)
Issuance of debt	1,588			1,141			—			—			2,729
Repayment of debt	(608		)	(1,692		)	(8		)	—			(2,308		)
Cash dividends to shareholders	(258		)	—			—			—			(258		)
Noncontrolling interests and other financing activities	—			—			(71		)	—			(71		)
CASH (USED FOR) PROVIDED BY FINANCING ACTIVITIES	(219		)	(195		)	(749		)	148			(1,015		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			10			—			10
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	—			(964		)	915			148			99
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	—			2,083			1,242			(2,941		)	384
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	1,119		$	2,157		$	(2,793	)	$	483

Condensed Consolidating Statement of Cash Flows

	Nine months ended September 30, 2015
							Other
	Aon			Aon			Non-Guarantor			Consolidating
(millions)	plc			Corporation			Subsidiaries			Adjustments			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES
CASH PROVIDED BY (USED FOR) OPERATING ACTIVITIES	$	251		$	(624	)	$	1,668		$	—		$	1,295
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from investments	—			3			20			—			23
Purchases of investments	—			(1		)	(2		)	—			(3		)
Net (purchases) sales of short-term investments - non-fiduciary	—			(51		)	42			—			(9		)
Acquisition of businesses, net of cash acquired	—			—			(26		)	—			(26		)
Proceeds from sale of businesses	—			—			54			—			54
Capital expenditures	—			—			(225		)	—			(225		)
CASH USED FOR INVESTING ACTIVITIES	—			(49		)	(137		)	—			(186		)
CASH FLOWS FROM FINANCING ACTIVITIES
Share repurchase	(1,150		)	—			—			—			(1,150		)
Advances from (to) affiliates	630			451			(1,616		)	535			—
Issuance of shares for employee benefit plans	(148		)	—			—			—			(148		)
Issuance of debt	768			2,720			6			—			3,494
Repayment of debt	(111		)	(2,735		)	(14		)	—			(2,860		)
Cash dividends to shareholders	(240		)	—			—			—			(240		)
Noncontrolling interests and other financing activities	—			—			(26		)	—			(26		)
CASH (USED FOR) PROVIDED BY FINANCING ACTIVITIES	(251		)	436			(1,650		)	535			(930		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	—			—			(155		)	—			(155		)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	—			(237		)	(274		)	535			24
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	—			2,727			1,361			(3,714		)	374
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	—		$	2,490		$	1,087		$	(3,179	)	$	398