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Pension Plans and Other Postretirement Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2015
Pension plans and other postretirement benefit plans  
Schedule of Changes in Benefit Obligation and Fair Value of Plan Assets Amounts Recognized in Balance Sheet and Assumptions Used [Table Text Block]
The following table summarizes the changes in benefit obligations and fair values of retirement plan assets during 2015 and 2014:
 
Defined Benefit Pension Plans
 
Other Post-
Retirement Plans
Change in Financial Status of Retirement Plans
(In millions)
U.S.
 
Non-U.S.
 
Total
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Change in Projected Benefit Obligation (PBO):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Benefit obligation at beginning of year
$
1,437.3

 
$
1,326.8

 
$
590.4

 
$
546.4

 
$
2,027.7

 
$
1,873.2

 
$
2.4

 
$
57.2

Service cost
25.7

 
23.5

 
11.7

 
10.7

 
37.4

 
34.2

 

 
0.1

Interest cost
55.1

 
60.0

 
16.1

 
22.2

 
71.2

 
82.2

 
0.1

 
1.1

Plan participants' contributions

 

 
0.5

 
0.6

 
0.5

 
0.6

 

 

Amendments
(3.6
)
 

 

 

 
(3.6
)
 

 
(2.1
)
 
(51.5
)
Settlements/curtailments

 

 
(1.0
)
 

 
(1.0
)
 

 

 

Actuarial (gain) loss
(63.0
)
 
131.4

 
(11.4
)
 
92.4

 
(74.4
)
 
223.8

 
0.4

 
(1.0
)
Medicare subsidy receipts

 

 

 

 

 

 
1.0

 
0.2

Benefits paid
(87.0
)
 
(104.4
)
 
(20.7
)
 
(25.8
)
 
(107.7
)
 
(130.2
)
 
(1.1
)
 
(3.7
)
Currency exchange translation adjustments

 

 
(49.9
)
 
(56.1
)
 
(49.9
)
 
(56.1
)
 

 

Benefit obligation at end of year
$
1,364.5

 
$
1,437.3

 
$
535.7

 
$
590.4

 
$
1,900.2

 
$
2,027.7

 
$
0.7

 
$
2.4

Change in Plan Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fair value of plan assets at beginning of year
$
1,262.6

 
$
1,145.2

 
$
336.1

 
$
306.5

 
$
1,598.7

 
$
1,451.7

 
$

 
$

Actual return on plan assets
(34.6
)
 
112.1

 
2.9

 
59.1

 
(31.7
)
 
171.2

 

 

Employer contributions
7.3

 
109.7

 
10.5

 
18.1

 
17.8

 
127.8

 
0.1

 
3.5

Plan participants' contributions

 

 
0.5

 
0.6

 
0.5

 
0.6

 

 

Settlements

 

 
(1.5
)
 

 
(1.5
)
 

 

 

Medicare subsidy receipts

 

 

 

 

 

 
1.0

 
0.2

Benefits paid
(87.0
)
 
(104.4
)
 
(20.7
)
 
(25.8
)
 
(107.7
)
 
(130.2
)
 
(1.1
)
 
(3.7
)
Currency exchange translation adjustments

 

 
(21.6
)
 
(22.4
)
 
(21.6
)
 
(22.4
)
 

 

Fair value of plan assets at end of year
$
1,148.3

 
$
1,262.6

 
$
306.2

 
$
336.1

 
$
1,454.5

 
$
1,598.7

 
$

 
$

Funded status at end of year (PBO basis)
$
(216.2
)
 
$
(174.7
)
 
$
(229.5
)
 
$
(254.3
)
 
$
(445.7
)
 
$
(429.0
)
 
$
(0.7
)
 
$
(2.4
)
Amounts recognized in the Consolidated Balance Sheets consist of:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent assets
$

 
$

 
$
26.1

 
$
44.1

 
$
26.1

 
$
44.1

 
$

 
$

Current liabilities
(7.1
)
 
(7.1
)
 
(8.2
)
 
(8.5
)
 
(15.3
)
 
(15.6
)
 

 
(0.1
)
Noncurrent liabilities
(209.1
)
 
(167.6
)
 
(247.4
)
 
(289.9
)
 
(456.5
)
 
(457.5
)
 
(0.7
)
 
(2.3
)
Net amount recognized
$
(216.2
)
 
$
(174.7
)
 
$
(229.5
)
 
$
(254.3
)
 
$
(445.7
)
 
$
(429.0
)
 
$
(0.7
)
 
$
(2.4
)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Accumulated actuarial loss
$

 
$

 
$

 
$

 
$

 
$

 
$
5.9

 
$
6.2

Prior service (credit) cost
(3.1
)
 
0.8

 
(0.3
)
 
(0.3
)
 
(3.4
)
 
0.5

 
(7.1
)
 
(12.9
)
Net amount recognized
$
(3.1
)
 
$
0.8

 
$
(0.3
)
 
$
(0.3
)
 
$
(3.4
)
 
$
0.5

 
$
(1.2
)
 
$
(6.7
)

 
Defined Benefit Pension Plans
 
Other Post-
Retirement Plans
Change in Financial Status of Retirement Plans
(In millions)
U.S.
 
Non-U.S.
 
Total
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Weighted Average Assumptions Used to Determine Benefit Obligations as of December 31:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
4.31
%
 
3.95
%
 
3.00
%
 
2.97
%
 
NM
 
NM
 
4.40
%
 
4.18
%
Rate of compensation increase
4.70
%
 
4.70
%
 
3.35
%
 
3.24
%
 
NM
 
NM
 
NM

 
NM

Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
3.95
%
 
4.76
%
 
2.97
%
 
4.25
%
 
NM
 
NM
 
4.18
%
 
4.26
%
Expected return on plan assets
5.75
%
 
6.00
%
 
4.11
%
 
5.06
%
 
NM
 
NM
 
NM

 
NM

Rate of compensation increase
4.70
%
 
4.70
%
 
3.24
%
 
3.41
%
 
NM
 
NM
 
NM

 
NM


___________________________________________________________________________________________________________________
NM—Not meaningful
Components of Net Periodic Benefit Cost (Income) and Other Amounts Recognized in Other Comprehensive (Income) Loss
(In millions)
2015
 
2014
 
2013
U.S.
 
Non-U.S.
 
Other
 
U.S.
 
Non-U.S.
 
Other
 
U.S.
 
Non-U.S.
 
Other
Net Periodic Benefit Cost (Income)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
$
25.7

 
$
11.7

 
$

 
$
23.5

 
$
10.7

 
$
0.1

 
$
25.2

 
$
11.1

 
$
0.2

Interest cost
55.1

 
16.1

 
0.1

 
60.0

 
22.2

 
1.1

 
51.9

 
20.6

 
2.2

Expected return on plan assets
(70.4
)
 
(13.0
)
 

 
(69.9
)
 
(15.2
)
 

 
(68.0
)
 
(14.0
)
 

Amortization of prior service cost (credit)
0.3

 

 
(3.4
)
 
0.7

 

 
(2.4
)
 
0.7

 

 

Amortization of net deferred actuarial loss

 

 
0.7

 

 

 

 

 

 
0.4

Annual mark-to-market adjustment
42.0

 
(0.1
)
 

 
89.2

 
45.4

 

 
(65.8
)
 
11.0

 

Gain on termination and curtailment of postretirement plans

 

 
(4.5
)
 

 

 
(39.5
)
 

 

 

Net curtailment and settlement gain

 

 

 

 

 

 

 
(0.1
)
 

Net periodic benefit cost (income)
$
52.7

 
$
14.7

 
$
(7.1
)
 
$
103.5

 
$
63.1

 
$
(40.7
)
 
$
(56.0
)
 
$
28.6

 
$
2.8

Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net deferred actuarial loss (gain)
$

 
$

 
$
0.4

 
$

 
$

 
$
(1.0
)
 
$

 
$

 
$
(4.3
)
Net prior service credit
(3.6
)
 

 
(2.1
)
 

 

 
(13.6
)
 

 

 
(1.7
)
Amortization of prior service cost (credit)
(0.3
)
 

 
3.4

 
(0.7
)
 

 
2.4

 
(0.7
)
 

 

Amortization of net deferred actuarial loss

 

 
(0.7
)
 

 

 

 

 

 
(0.4
)
Loss on termination and curtailment of postretirement plans

 

 
4.5

 

 

 
12.2

 

 

 

Total recognized in other comprehensive (income) loss
(3.9
)
 

 
5.5

 
(0.7
)
 

 

 
(0.7
)
 

 
(6.4
)
Total recognized in net periodic benefit cost (income) and other comprehensive (income) loss
$
48.8

 
$
14.7

 
$
(1.6
)
 
$
102.8

 
$
63.1

 
$
(40.7
)
 
$
(56.7
)
 
$
28.6

 
$
(3.6
)

Schedule of Net Benefit Cost and Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
Components of Net Periodic Benefit Cost (Income) and Other Amounts Recognized in Other Comprehensive (Income) Loss
(In millions)
2015
 
2014
 
2013
U.S.
 
Non-U.S.
 
Other
 
U.S.
 
Non-U.S.
 
Other
 
U.S.
 
Non-U.S.
 
Other
Net Periodic Benefit Cost (Income)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service cost
$
25.7

 
$
11.7

 
$

 
$
23.5

 
$
10.7

 
$
0.1

 
$
25.2

 
$
11.1

 
$
0.2

Interest cost
55.1

 
16.1

 
0.1

 
60.0

 
22.2

 
1.1

 
51.9

 
20.6

 
2.2

Expected return on plan assets
(70.4
)
 
(13.0
)
 

 
(69.9
)
 
(15.2
)
 

 
(68.0
)
 
(14.0
)
 

Amortization of prior service cost (credit)
0.3

 

 
(3.4
)
 
0.7

 

 
(2.4
)
 
0.7

 

 

Amortization of net deferred actuarial loss

 

 
0.7

 

 

 

 

 

 
0.4

Annual mark-to-market adjustment
42.0

 
(0.1
)
 

 
89.2

 
45.4

 

 
(65.8
)
 
11.0

 

Gain on termination and curtailment of postretirement plans

 

 
(4.5
)
 

 

 
(39.5
)
 

 

 

Net curtailment and settlement gain

 

 

 

 

 

 

 
(0.1
)
 

Net periodic benefit cost (income)
$
52.7

 
$
14.7

 
$
(7.1
)
 
$
103.5

 
$
63.1

 
$
(40.7
)
 
$
(56.0
)
 
$
28.6

 
$
2.8

Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net deferred actuarial loss (gain)
$

 
$

 
$
0.4

 
$

 
$

 
$
(1.0
)
 
$

 
$

 
$
(4.3
)
Net prior service credit
(3.6
)
 

 
(2.1
)
 

 

 
(13.6
)
 

 

 
(1.7
)
Amortization of prior service cost (credit)
(0.3
)
 

 
3.4

 
(0.7
)
 

 
2.4

 
(0.7
)
 

 

Amortization of net deferred actuarial loss

 

 
(0.7
)
 

 

 

 

 

 
(0.4
)
Loss on termination and curtailment of postretirement plans

 

 
4.5

 

 

 
12.2

 

 

 

Total recognized in other comprehensive (income) loss
(3.9
)
 

 
5.5

 
(0.7
)
 

 

 
(0.7
)
 

 
(6.4
)
Total recognized in net periodic benefit cost (income) and other comprehensive (income) loss
$
48.8

 
$
14.7

 
$
(1.6
)
 
$
102.8

 
$
63.1

 
$
(40.7
)
 
$
(56.7
)
 
$
28.6

 
$
(3.6
)
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
Pension Plans with Underfunded or
Unfunded Accumulated Benefit Obligation
(In millions)
U.S.
 
Non-U.S.
 
Total
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Projected benefit obligation
$
1,364.4

 
$
352.6

 
$
260.8

 
$
306.0

 
$
1,625.2

 
$
658.6

Accumulated benefit obligation
1,314.1

 
351.8

 
229.1

 
274.5

 
1,543.2

 
626.3

Fair value of plan assets
1,148.2

 
220.8

 
7.4

 
9.4

 
1,155.6

 
230.2

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
Estimated Expected Future Benefit Payments Reflecting Future Service and Medicare Subsidy Receipts for the Fiscal Years Ending
(In millions)
Pension Plans
 
Other
Postretirement Plans
 
Total
Payments
Net of
Subsidy
U.S.
 
Non-U.S.(1)
 
Benefit
Payments
 
Medicare
Subsidy
Receipts
 
Benefit
Payments(2)
 
Benefit
Payments
 
 
 
2013 (actual)
$
79.2

 
$
22.1

 
$
4.5

 
$
(1.4
)
 
$
104.4

2014 (actual)(2)
104.4

 
25.8

 
3.7

 
(0.2
)
 
133.7

2015 (actual)
87.0

 
20.7

 
1.1

 
(1.0
)
 
107.8

2016
85.7

 
21.8

 

 

 
107.5

2017
86.0

 
20.6

 

 

 
106.6

2018
87.0

 
21.2

 

 

 
108.2

2019
87.9

 
22.1

 

 

 
110.0

2020
89.1

 
23.0

 

 

 
112.1

2021 - 2025
457.5

 
126.1

 
0.2

 

 
583.8


___________________________________________________________________________________________________________________
(1)
Non-U.S. estimated benefit payments for 2016 and future periods have been translated at the applicable December 31, 2015, exchange rates.
(2)
Includes approximately $28 million of benefit payments from nonqualified plans that were previously restricted by the Bankruptcy Court while the Company was in Chapter 11 and were paid in 2014.
Pension Plans  
Pension plans and other postretirement benefit plans  
Schedule of Net Funded Status
The following table presents the funded status of Grace's fully-funded, underfunded, and unfunded pension plans:
(In millions)
December 31, 2015
 
December 31, 2014
Overfunded defined benefit pension plans
$
26.1

 
$
44.1

Underfunded defined benefit pension plans
(118.9
)
 
(79.5
)
Unfunded defined benefit pension plans
(337.6
)
 
(378.0
)
Total underfunded and unfunded defined benefit pension plans
(456.5
)
 
(457.5
)
Pension liabilities included in other current liabilities
(15.3
)
 
(15.6
)
Net funded status
$
(445.7
)
 
$
(429.0
)
U.S. qualified pension plans  
Pension plans and other postretirement benefit plans  
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]
The following tables present the fair value hierarchy for the U.S. qualified pension plan assets measured at fair value as of December 31, 2015 and 2014.
 
Fair Value Measurements at December 31, 2015, Using

(In millions)
Total
 
Quoted Prices in
Active Markets
for Identical
Assets or
Liabilities
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
U.S. equity group trust funds
$
120.1

 
$

 
$
120.1

 
$

Non-U.S. equity group trust funds
81.8

 

 
81.8

 

Corporate bond group trust funds—intermediate-term
320.4

 

 
320.4

 

Corporate bond group trust funds—long-term
525.6

 

 
525.6

 

Other fixed income group trust funds
25.4

 

 
25.4

 

Common/collective trust funds
57.3

 

 
57.3

 

Annuity and immediate participation contracts
17.7

 

 
17.7

 

Total Assets
$
1,148.3

 
$

 
$
1,148.3

 
$

 
Fair Value Measurements at December 31, 2014, Using

(In millions)
Total
 
Quoted Prices in
Active Markets
for Identical
Assets or
Liabilities
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
U.S. equity group trust funds
$
134.2

 
$

 
$
134.2

 
$

Non-U.S. equity group trust funds
76.8

 

 
76.8

 

Corporate bond group trust funds—intermediate-term
324.9

 

 
324.9

 

Corporate bond group trust funds—long-term
567.1

 

 
567.1

 

Other fixed income group trust funds
23.7

 

 
23.7

 

Common/collective trust funds
118.8

 

 
118.8

 

Annuity and immediate participation contracts
17.1

 

 
17.1

 

Total Assets
$
1,262.6

 
$

 
$
1,262.6

 
$

Schedule of Allocation of Plan Assets [Table Text Block]
The target allocation of investment assets at December 31, 2015, and the actual allocation at December 31, 2015 and 2014, for Grace's U.S. qualified pension plans are as follows:
 
Target
Allocation
 
Percentage of Plan Assets
December 31,
U.S. Qualified Pension Plans Asset Category
2015
 
2015
 
2014
U.S. equity securities
11
%
 
11
%
 
11
%
Non-U.S. equity securities
7
%
 
7
%
 
6
%
Short-term debt securities
6
%
 
6
%
 
10
%
Intermediate-term debt securities
28
%
 
28
%
 
26
%
Long-term debt securities
46
%
 
46
%
 
45
%
Other investments
2
%
 
2
%
 
2
%
Total
100
%
 
100
%
 
100
%

Non-U.S. pension plans  
Pension plans and other postretirement benefit plans  
Schedule of Net Funded Status
Funded Status of U.S. Pension Plans
(In millions)
Fully-Funded U.S. Qualified
Pension Plans(1)
 
Underfunded U.S.
Qualified Pension Plans(1)
 
Unfunded Pay-As-You-Go
U.S. Nonqualified Plans(2)
2015

2014

2015

2014

2015

2014
Projected benefit obligation
$

 
$

 
$
1,257.5

 
$
1,329.8

 
$
107.0

 
$
107.5

Fair value of plan assets

 

 
1,148.3

 
1,262.6

 

 

Funded status (PBO basis)
$

 
$

 
$
(109.2
)
 
$
(67.2
)
 
$
(107.0
)
 
$
(107.5
)
Benefits paid
$

 
$

 
$
(79.7
)
 
$
(69.7
)
 
$
(7.3
)
 
$
(34.7
)

Funded Status of Non-U.S. Pension Plans
(In millions)
Fully-Funded Non-U.S.
Pension Plans(1)
 
Underfunded Non-U.S.
Pension Plans(1)
 
Unfunded Pay-As-You-Go
Non-U.S. Pension Plans(2)
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Projected benefit obligation
$
240.3

 
$
245.8

 
$
49.5

 
$
58.5

 
$
245.9

 
$
286.1

Fair value of plan assets
266.4

 
289.9

 
39.8

 
46.2

 

 

Funded status (PBO basis)
$
26.1

 
$
44.1

 
$
(9.7
)
 
$
(12.3
)
 
$
(245.9
)
 
$
(286.1
)
Benefits paid
$
(11.3
)
 
$
(12.3
)
 
$
(2.3
)
 
$
(4.7
)
 
$
(7.1
)
 
$
(8.8
)
___________________________________________________________________________________________________________________
(1)
Plans intended to be advance-funded.
(2)
Plans intended to be pay-as-you-go.
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]
The following table presents the fair value hierarchy for the non-U.S. pension plan assets measured at fair value as of December 31, 2015.
 
Fair Value Measurements at December 31, 2015, Using
(In millions)
Total
 
Quoted Prices
in Active
Markets for
Identical
Assets or
Liabilities
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Common/collective trust funds
$
159.8

 
$

 
$
159.8

 
$

Government and agency securities
2.5

 

 
2.5

 

Corporate bonds
1.4

 

 
1.4

 

Insurance contracts and other investments(1)
141.8

 

 
3.3

 
138.5

Cash
0.7

 
0.7

 

 

Total Assets
$
306.2

 
$
0.7


$
167.0

 
$
138.5

___________________________________________________________________________________________________________________
(1)
In October 2015, the trustees of the U.K. pension plan entered into a contract with an insurance company to secure the benefits for current retirees and hedge the risk of future inflation and changes in longevity with a buy-in contract. At December 31, 2015, the fair value of the insurance contract has been determined using a discounted cash flow approach that maximizes observable inputs, such as current yields on similar instruments, but includes adjustments for certain risks that may not be observable, such as credit and liquidity risks.
The following table presents a summary of the changes in the fair value of the plans’ Level 3 assets for the year ended December 31, 2015.
(In millions)
Insurance Contracts
Balance, December 31, 2014
$

Actual return on plan assets relating to assets still held at year-end
(1.2
)
Purchases, sales, and settlements, net
145.6

Transfers out for benefit payments
(1.7
)
Currency exchange translation adjustments
(4.2
)
Balance, December 31, 2015
$
138.5

The following table presents the fair value hierarchy for the non-U.S. pension plan assets measured at fair value as of December 31, 2014.
 
Fair Value Measurements at December 31, 2014, Using
(In millions)
Total
 
Quoted Prices
in Active
Markets for
Identical
Assets or
Liabilities
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Common/collective trust funds
$
326.7

 
$

 
$
326.7

 
$

Government and agency securities
2.6

 

 
2.6

 

Corporate bonds
1.1

 

 
1.1

 

Insurance contracts and other investments
4.6

 

 
4.6

 

Cash
1.1

 
1.1

 

 

Total Assets
$
336.1

 
$
1.1

 
$
335.0

 
$

Non-U.S. pension plans | United Kingdom  
Pension plans and other postretirement benefit plans  
Schedule of Allocation of Plan Assets [Table Text Block]
The target allocation of investment assets at December 31, 2015, and the actual allocation at December 31, 2015 and 2014, for the U.K. pension plan are as follows:
 
Target
Allocation
 
Percentage of Plan Assets
December 31,
United Kingdom Pension Plan Asset Category
2015
 
2015
 
2014
Diversified growth funds
10
%
 
10
%
 
11
%
U.K. gilts
29
%
 
29
%
 
42
%
U.K. corporate bonds
8
%
 
8
%
 
47
%
Insurance contracts
53
%
 
53
%
 
%
Total
100
%
 
100
%
 
100
%

Non-U.S. pension plans | Canada  
Pension plans and other postretirement benefit plans  
Schedule of Allocation of Plan Assets [Table Text Block]
The target allocation of investment assets at December 31, 2015, and the actual allocation at December 31, 2015 and 2014, for the Canadian pension plan are as follows:
 
Target
Allocation
 
Percentage of Plan Assets
December 31,
Canadian Pension Plan Asset Category
2015
 
2015
 
2014
Equity securities
27
%
 
28
%
 
27
%
Bonds
58
%
 
57
%
 
58
%
Other investments
15
%
 
15
%
 
15
%
Total
100
%
 
100
%
 
100
%