|
PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Benefit Obligations, Fair Value of Plan Assets, and Net Funded Status) (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — beginning of year |
$ 200.5
|
$ 192.2
|
|
| Employer contributions |
25.5
|
39.0
|
|
| Fair value of plan assets — end of year |
188.6
|
200.5
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
188.6
|
200.5
|
|
| Amounts recognized in Statements of Financial Position: |
|
|
|
| Noncurrent liabilities |
(294.0)
|
(618.3)
|
|
|
Pension Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — beginning of year |
(1,244.3)
|
(1,141.4)
|
|
| Service cost (excluding expenses) |
38.9
|
32.0
|
23.6
|
| Interest cost |
45.9
|
48.4
|
51.4
|
| Plan amendments |
0.8
|
2.8
|
|
| Actuarial loss |
(121.8)
|
84.3
|
|
| Benefits paid |
(72.9)
|
(71.0)
|
|
| Participant contributions |
0
|
0
|
|
| Federal subsidy on benefits paid |
0
|
0
|
|
| Exchange rate gain |
(17.2)
|
6.4
|
|
| Benefit obligations — end of year |
(1,118.0)
|
(1,244.3)
|
(1,141.4)
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — beginning of year |
838.7
|
744.1
|
|
| Actual return on plan assets |
109.5
|
92.5
|
10.8
|
| Participant contributions |
0
|
0
|
|
| Employer contributions |
53.7
|
67.7
|
|
| Benefits paid |
(72.9)
|
(71.0)
|
|
| Exchange rate gain |
(13.7)
|
5.4
|
|
| Fair value of plan assets — end of year |
915.3
|
838.7
|
744.1
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
915.3
|
838.7
|
744.1
|
| Defined Benefit Plan, Benefit Obligation |
(1,118.0)
|
(1,244.3)
|
(1,141.4)
|
| Underfunded status of plan |
(202.7)
|
(405.6)
|
|
| Amount recognized at December 31 |
(202.7)
|
(405.6)
|
|
| Amounts recognized in Statements of Financial Position: |
|
|
|
| Current liabilities |
(5.2)
|
(1.8)
|
|
| Noncurrent liabilities |
(197.5)
|
(403.8)
|
|
| Net amount recognized |
(202.7)
|
(405.6)
|
|
| Amounts recognized in accumulated other comprehensive income: |
|
|
|
| Net actuarial loss |
230.6
|
429.2
|
|
| Prior service cost |
14.9
|
17.2
|
|
| Transition asset |
0
|
0
|
|
| Net amount recognized |
245.5
|
446.4
|
|
| The estimated amounts that will be amortized from accumulated other comprehensive income into net periodic benefit cost in 2013: |
|
|
|
| Net actuarial loss |
14.2
|
|
|
| Prior service cost |
2.7
|
|
|
| Net amount recognized |
16.9
|
|
|
|
Other Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — beginning of year |
(459.8)
|
(488.4)
|
|
| Service cost (excluding expenses) |
12.3
|
14.7
|
11.1
|
| Interest cost |
17.3
|
20.6
|
22.3
|
| Plan amendments |
0
|
(58.3)
|
|
| Actuarial loss |
(103.3)
|
11.3
|
|
| Benefits paid |
(28.0)
|
(26.9)
|
|
| Participant contributions |
5.6
|
4.6
|
|
| Federal subsidy on benefits paid |
0.5
|
0.8
|
|
| Exchange rate gain |
(8.0)
|
4.6
|
|
| Benefit obligations — end of year |
(356.2)
|
(459.8)
|
(488.4)
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — beginning of year |
237.0
|
193.5
|
|
| Actual return on plan assets |
11.0
|
26.1
|
1.9
|
| Participant contributions |
1.8
|
1.7
|
|
| Employer contributions |
20.7
|
23.3
|
|
| Benefits paid |
(18.7)
|
(7.6)
|
|
| Exchange rate gain |
0
|
0
|
|
| Fair value of plan assets — end of year |
251.8
|
237.0
|
193.5
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
251.8
|
237.0
|
193.5
|
| Defined Benefit Plan, Benefit Obligation |
(356.2)
|
(459.8)
|
(488.4)
|
| Underfunded status of plan |
(104.4)
|
(222.8)
|
|
| Amount recognized at December 31 |
(104.4)
|
(222.8)
|
|
| Amounts recognized in Statements of Financial Position: |
|
|
|
| Current liabilities |
(7.9)
|
(8.3)
|
|
| Noncurrent liabilities |
(96.5)
|
(214.5)
|
|
| Net amount recognized |
(104.4)
|
(222.8)
|
|
| Amounts recognized in accumulated other comprehensive income: |
|
|
|
| Net actuarial loss |
67.0
|
176.8
|
|
| Prior service cost |
(45.4)
|
(48.8)
|
|
| Transition asset |
0
|
0
|
|
| Net amount recognized |
21.6
|
128.0
|
|
| The estimated amounts that will be amortized from accumulated other comprehensive income into net periodic benefit cost in 2013: |
|
|
|
| Net actuarial loss |
4.6
|
|
|
| Prior service cost |
(3.6)
|
|
|
| Net amount recognized |
1.0
|
|
|
|
Salaried Employees [Member] | Pension Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — end of year |
(427.2)
|
(464.4)
|
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — end of year |
357.4
|
328.2
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
357.4
|
328.2
|
|
| Defined Benefit Plan, Benefit Obligation |
(427.2)
|
(464.4)
|
|
| Underfunded status of plan |
(69.8)
|
(136.2)
|
|
|
Salaried Employees [Member] | Other Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — end of year |
(53.6)
|
(72.6)
|
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — end of year |
0
|
0
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
0
|
0
|
|
| Defined Benefit Plan, Benefit Obligation |
(53.6)
|
(72.6)
|
|
| Underfunded status of plan |
(53.6)
|
(72.6)
|
|
|
Hourly Employees [Member] | Pension Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — end of year |
(674.8)
|
(764.8)
|
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — end of year |
552.7
|
506.4
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
552.7
|
506.4
|
|
| Defined Benefit Plan, Benefit Obligation |
(674.8)
|
(764.8)
|
|
| Underfunded status of plan |
(122.1)
|
(258.4)
|
|
|
Hourly Employees [Member] | Other Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — end of year |
(302.6)
|
(387.2)
|
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — end of year |
251.8
|
237.0
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
251.8
|
237.0
|
|
| Defined Benefit Plan, Benefit Obligation |
(302.6)
|
(387.2)
|
|
| Underfunded status of plan |
(50.8)
|
(150.2)
|
|
|
Mining Employees [Member] | Pension Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — end of year |
(6.8)
|
(6.4)
|
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — end of year |
5.2
|
4.1
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
5.2
|
4.1
|
|
| Defined Benefit Plan, Benefit Obligation |
(6.8)
|
(6.4)
|
|
| Underfunded status of plan |
(1.6)
|
(2.3)
|
|
|
Supplemental Executive Retirement Plan S E R P [Member] | Pension Benefits [Member]
|
|
|
|
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |
|
|
|
| Benefit obligations — end of year |
(9.2)
|
(8.7)
|
|
| Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |
|
|
|
| Fair value of plan assets — end of year |
0
|
0
|
|
| Funded status at December 31: |
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
0
|
0
|
|
| Defined Benefit Plan, Benefit Obligation |
(9.2)
|
(8.7)
|
|
| Underfunded status of plan |
$ (9.2)
|
$ (8.7)
|
|