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Retirement Benefit Plans (Tables) (Pension Plans, Defined Benefit [Member])
 12 Months Ended
Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
  
Defined Benefit Plan Disclosure [Line Items]  
Net periodic benefit cost for the Company's retirement benefit plans
The following tables summarize the net periodic benefit cost information and the related assumptions used to measure the net periodic benefit cost for the years ended December 31:
 
  
2012
2011
2010
Components of net periodic benefit cost:
 
 
 
Service cost
$
34.7

$
32.2

$
32.7

Interest cost
151.1

158.6

157.9

Expected return on plan assets
(221.1
)
(214.9
)
(199.5
)
Amortization of prior service cost
9.3

9.4

9.5

Amortization of net actuarial loss
83.3

56.0

51.9

Pension curtailments and settlements
11.6

—

0.4

Net periodic benefit cost
$
68.9

$
41.3

$
52.9
Pension Benefits
The following table summarizes assumptions used to measure the benefit obligation for the defined benefit pension plans at December 31:
 
Assumptions
2012
2011
U.S. Plans:
 
 
Discount rate
4.00
%
5.00
%
Future compensation assumption
2% to 3%

2% to 3%

International Plans:
 
 
Discount rate
2.75% to 9.5%

4.75% to 9.5%

Future compensation assumption
2.3% to 8.0%

2.5% to 8.0%

Assumptions
2012
2011
2010
U.S. Plans:
 
 
 
Discount rate
5.00
%
5.75
%
6.00
%
Future compensation assumption
2.0% to 3.0%

2.0% to 3.0%

2.0% to 3.0%

Expected long-term return on plan assets
8.25
%
8.50
%
8.75
%
International Plans:
 
 
 
Discount rate
4.75% to 9.5%

4.75% to 9.0%

5.25% to 8.5%

Future compensation assumption
2.5% to 8.0%

2.5% to 8.84%

2.66% to 6.12%

Expected long-term return on plan assets
3.25% to 9.0%

3.5% to 9.0%

4.25% to 9.5%
Defined Benefit Plans for Change in Benefit Obligations
The following tables set forth the change in benefit obligation, change in plan assets, funded status and amounts recognized on the Consolidated Balance Sheets for the defined benefit pension plans as of December 31, 2012 and 2011:
 
  
2012
2011
Change in benefit obligation:
 
 
Benefit obligation at beginning of year
$
3,124.6

$
2,816.3

Service cost
34.7

32.2

Interest cost
151.1

158.6

Amendments
(0.3
)
12.4

Actuarial losses
394.1

304.2

Employee contributions
0.2

0.2

International plan exchange rate change
18.2

(6.1
)
Curtailment loss
9.5

—

Benefits paid
(235.8
)
(193.2
)
Benefit obligation at end of year
$
3,496.3

$
3,124.6
Defined Benefit Plans for Change in Plan Assets
Change in plan assets:
 
 
Fair value of plan assets at beginning of year
$
2,631.9

$
2,423.0

Actual return on plan assets
361.7

114.5

Employee contributions
0.2

0.2

Company contributions / payments
325.8

291.1

International plan exchange rate change
14.6

(3.7
)
Benefits paid
(235.8
)
(193.2
)
Fair value of plan assets at end of year
3,098.4

2,631.9

Funded status at end of year
$
(397.9
)
$
(492.7
)
Defined Benefit Plans Amounts recognized on the Consolidated Balance Sheets
Amounts recognized on the Consolidated Balance Sheets:
 
 
Non-current assets
$
0.2

$
4.4

Current liabilities
(6.7
)
(6.1
)
Non-current liabilities
(391.4
)
(491.0
)

$
(397.9
)
$
(492.7
)
Defined Benefit Plans Amounts recognized in accumulated other comprehensive income
Amounts recognized in accumulated other comprehensive loss:
 
 
Net actuarial loss
$
1,489.4

$
1,312.8

Net prior service cost
23.5

35.4

Accumulated other comprehensive loss
$
1,512.9

$
1,348.2
Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income
Changes in plan assets and benefit obligations recognized in accumulated other comprehensive loss (AOCL):
2012
2011
AOCI at beginning of year
$
1,348.2

$
999.1

Net actuarial loss
263.1

404.6

Prior service cost
(0.3
)
12.4

Recognized net actuarial loss
(83.3
)
(56.0
)
Recognized prior service cost
(9.3
)
(9.4
)
Loss recognized due to curtailment
(11.6
)
—

Foreign currency impact
6.1

(2.5
)
Total recognized in accumulated other comprehensive loss at December 31
$
1,512.9

$
1,348.2
Target assets allocation and actual asset allocations for US pension plan assets
The Company’s target allocation for pension plan assets, as well as the actual pension plan asset allocations as of December 31, 2012 and 2011, was as follows:
 
 
Current Target
Allocation
Percentage of Pension Plan
Assets at December 31,
Asset Category

 

2012
2011
Equity securities
43%
to
52%
47%
48%
Debt securities
35%
to
43%
40%
41%
Other
12%
to
15%
13%
11%
Total

 

100%
100%
Fair value assets measured on recurring basis
The following table presents the fair value hierarchy for those investments of the Company’s pension assets measured at fair value on a recurring basis as of December 31, 2012:
 
 
Total
Level 1
Level 2
Level 3
Assets:
 
 
 
 
Cash and cash equivalents
$
80.6

$
80.6

$
—

$
—

Government and agency securities
240.5

208.2

32.3

—

Corporate bonds
482.6

115.1

367.5

—

Equity securities
717.3

716.7

0.6

—

Asset backed securities
55.4

—

55.4

—

Common collective funds - equities
663.3

—

663.3

—

Common collective funds - fixed income
444.5

—

444.5

—

Common collective funds - other
41.4

—

41.4

—

Limited partnerships
79.9

—

—

79.9

Real Estate
292.2

163.6

—

128.6

Other assets
0.7

—

0.7

—

Total Assets
$
3,098.4

$
1,284.2

$
1,605.7

$
208.5

The following table presents the fair value hierarchy for those investments of the Company’s pension assets measured at fair value on a recurring basis as of December 31, 2011:
 
Total
Level 1
Level 2
Level 3
Assets:
 
 
 
 
Cash and cash equivalents
$
135.3

$
135.3

$
—

$
—

Government and agency securities
163.2

132.8

30.4

—

Corporate bonds
376.0

—

376.0

—

Equity securities
661.8

661.8

—

—

Asset backed securities
15.1

—

15.1

—

Common collective funds - equities
478.5

—

478.5

—

Common collective funds - fixed income
509.5

—

509.5

—

Common collective funds - other
22.8

—

22.8

—

Limited partnerships
83.6

—

—

83.6

Real Estate
185.4

125.7

—

59.7

Other assets
0.7

—

0.7

—

Total Assets
$
2,631.9

$
1,055.6

$
1,433.0

$
143.3
Summary of changes in the fair value of the plan's level three assets
The table below sets forth a summary of changes in the fair value of the level 3 assets by fund for the year ended December 31, 2011:
 
Westridge Investment
Limited Partnerships
Real Estate
Total
Beginning balance, January 1
$
19.2

$
94.6

$
0.2

$
114.0

Transfers out
(19.2
)
—

—

(19.2
)
Purchases
—

11.9

58.2

70.1

Sales
—

(15.1
)
—

(15.1
)
Realized losses
—

(1.6
)
—

(1.6
)
Unrealized gains (losses)
—

(6.2
)
1.3

(4.9
)
Ending balance, December 31
$
—

$
83.6

$
59.7

$
143.3

The table below sets forth a summary of changes in the fair value of the level 3 assets by fund for the year ended December 31, 2012:
 
Limited Partnerships
Real Estate
Total
Beginning balance, January 1
$
83.6

$
59.7

$
143.3

Purchases
7.1

63.7

70.8

Sales
(8.5
)
(4.6
)
(13.1
)
Realized gains (losses)
(3.4
)
1.9

(1.5
)
Unrealized gains
1.1

7.9

9.0

Ending balance, December 31
$
79.9

$
128.6

$
208.5
Employer contributions to defined benefit plans
Employer Contributions to Defined Benefit Plans
 
2011
$
291.1

2012
325.8

2013 (planned)
250.0
Future pension benefit payments
Future benefit payments are expected to be as follows:
Benefit Payments
 
2013
$
244.7

2014
244.5

2015
230.9

2016
232.9

2017
232.3

2018-2022
1,142.5