Employee Benefit Plans (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Year ended December 31, (in millions)	Amount
2012	$	45.2
2011	42.7
2010	41.1

	As of December 31,
(in millions)	2012			2011
Change in benefit obligation
Benefit obligation at beginning of period	$	798.5		$	725.9
Service costs	5.0			6.1
Interest costs	37.7			39.8
U.K. plan benefit reinstatement	—			10.9
Actuarial (gain)/loss	79.0			35.7
Termination benefits (a)	0.1			0.9
Benefits paid	(29.8		)	(27.5		)
Foreign currency translation	18.6			6.7
Benefit obligation at end of period	909.1			798.5
Change in plan assets
Fair value of plan assets at the beginning of period	721.1			656.3
Actual return on plan assets	61.0			53.9
Company contributions	31.6			29.9
Benefits paid	(26.4		)	(25.7		)
Foreign currency translation	18.5			6.7
Fair value of plan assets at end of period	805.8			721.1
Funded status of the plans	$	(103.3	)	$	(77.4	)

(a) Related to restructuring activities in Europe.

	Year ended December 31,
(in millions)	2012			2011
U.K. plan:
Plan benefit obligations	$	(659.5	)	$	(574.7	)
Fair value of plan assets	658.3			588.4
Net pension (liabilities) assets (a) (b)	(1.2		)	13.7

U.S. and other foreign plans:
Plan benefit obligations	(249.6		)	(223.8		)
Fair value of plan assets	147.5			132.7
Net pension liabilities (b)	$	(102.1	)	$	(91.1	)
Funded status of the plans	$	(103.3	)	$	(77.4	)

(a) Pension assets are included in the “Other long-term assets” line of the Consolidated Balance Sheets.

(b) Pension liabilities are included in the “Other long-term liabilities” line of the Consolidated Balance Sheets.

	Year ended December 31,
(in millions)	2012			2011			2010
Total unrecognized gain/(loss) included in other comprehensive income at the beginning of period	$	(88.8	)	$	(64.9	)	$	(93.4	)
Unrecognized gain/(loss) arising during the period	(39.9		)	(17.7		)	27.1
U.K. plan benefit reinstatement	—			(7.0		)	—
Amortization of deferred gains/(losses) to net periodic benefit expense (a)	1.3			0.8			1.4
Total unrecognized gain/(loss) included in other comprehensive income at end of period	$	(127.4	)	$	(88.8	)	$	(64.9	)

(a) Expected amortization of deferred losses to net periodic benefit expense in 2013 is $4.0 million pretax.

	Three months ended September 30,						Nine months ended September 30,
(in millions)	2013			2012			2013			2012
Service costs	$	0.6		$	0.7		$	1.9		$	2.1
Interest costs	9.3			9.3			28.0			27.8
Expected return on plan assets	(10.9		)	(11.1		)	(32.8		)	(33.4		)
Amortization	0.9			0.4			2.7			1.3
Net periodic benefit expense (income)	$	(0.1	)	$	(0.7	)	$	(0.2	)	$	(2.2	)

	Year ended December 31,
(in millions)	2012			2011			2010
Service costs	$	5.0		$	6.1		$	3.1
Interest costs	37.7			39.8			40.0
Expected return on plan assets	(44.7		)	(46.5		)	(40.4		)
Amortization	2.1			1.3			2.2
Net periodic benefit expense	$	0.1		$	0.7		$	4.9

	As of December 31,
	2012		2011		2010
Discount rate	4.29	%	4.75	%	5.40	%
Rate of compensation increase (a)	3.95	%	3.77	%	4.00	%

(a) The rate of compensation increases generally apply to active plans.

	Year ended December 31,
	2012		2011		2010
Discount rate	4.71	%	5.21	%	5.55	%
Expected long-term return on plan assets	6.11	%	6.83	%	6.86	%
Rate of compensation increase (a)	3.60	%	4.24	%	4.00	%

(a) The rate of compensation increases generally apply to active plans.

	As of December 31, 2012
	Fair Value Measurement Using
(in millions)	Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Total
Investments:
Cash and cash equivalents	$	0.6	$	—	$	—	$	0.6
Registered investment companies:
Cash management fund	1.8		—		—		1.8
Equity funds	58.8		—		—		58.8
Fixed income securities	—		42.6		—		42.6
Private investment funds—redeemable (a)	—		698.6		—		698.6
Private investment funds—non-redeemable	—		—		0.1		0.1
Insurance annuity contracts	—		—		3.3		3.3
Total investments at fair value	$	61.2	$	741.2	$	3.4	$	805.8

(a) 42% of portfolio is invested in equity index funds, 57% in fixed income investments and 1% in other investments.

	As of December 31, 2011
	Fair Value Measurement Using
(in millions)	Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Total
Investments:
Cash and cash equivalents	$	3.2	$	—	$	—	$	3.2
Registered investment companies:
Cash management fund	1.0		—		—		1.0
Equity funds	49.1		—		—		49.1
Fixed income funds	14.2		—		—		14.2
Fixed income securities	—		35.1		—		35.1
Private investment funds—redeemable (a)	—		613.1		—		613.1
Private investment funds—non- redeemable	—		—		1.0		1.0
Insurance annuity contracts	—		—		4.4		4.4
Total investments at fair value	$	67.5	$	648.2	$	5.4	$	721.1

(a) 46% of portfolio is invested in equity index funds and 54% in fixed income investments.

	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
(in millions)	Insurance annuity contracts			Private investment funds non-redeemable
Beginning balance as of January 1, 2011	$	4.4		$	0.3
Transfer in from level 2 (a)	—			1.4
Settlements	—			(0.7		)
Ending balance as of December 31, 2011	4.4			1.0
Actual return on plan assets	—			0.1
Settlements	(1.1		)	(1.0		)
Ending balance as of December 31, 2012	$	3.3		$	0.1

(a) The plans value transfers into Level 3 utilizing values as of the beginning of the period.

Year ended December 31, (in millions)	Amount

2013	$	26.4
2014	27.3
2015	29.3
2016	32.1
2017	33.6
2018-2022	199.6