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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Beginning balance

$ (1,027.8)

$ (1,093.7)

$ (1,014.5)

OCI before reclassifications

(132.5)

10.1

(130.4)

Amounts reclassified from AOCI

26.5

55.8

51.2

Net current-period OCI

(106.0)

65.9

(79.2)

Ending balance

(1,133.8)

(1,027.8)

(1,093.7)

Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]

Beginning balance

17.3

9.7

19.4

OCI before reclassifications

(6.2)

7.6

(9.7)

Amounts reclassified from AOCI

0.0

0.0

0.0

Net current-period OCI

(6.2)

7.6

(9.7)

Ending balance

11.1

17.3

9.7

Post- retirement benefit plans [Member]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Beginning balance

(954.5)

(965.5)

(951.2)

OCI before reclassifications

(107.2)

(32.5)

(60.6)

Amounts reclassified from AOCI

^[1]

55.9

43.5

46.3

Net current-period OCI

(51.3)

11.0

(14.3)

Ending balance

(1,005.8)

(954.5)

(965.5)

Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]

Beginning balance

0.0

0.0

0.0

OCI before reclassifications

0.0

0.0

0.0

Amounts reclassified from AOCI

0.0

0.0

0.0

Net current-period OCI

0.0

0.0

0.0

Ending balance

0.0

0.0

0.0

Currency translation adjustment [Member]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Beginning balance

(53.5)

(85.0)

(47.6)

OCI before reclassifications

(20.4)

31.5

(37.4)

Amounts reclassified from AOCI

^[2]

0.0

0.0

0.0

Net current-period OCI

(20.4)

31.5

(37.4)

Ending balance

(73.9)

(53.5)

(85.0)

Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]

Beginning balance

17.3

9.7

19.4

OCI before reclassifications

(6.2)

7.6

(9.7)

Amounts reclassified from AOCI

^[2]

0.0

0.0

0.0

Net current-period OCI

(6.2)

7.6

(9.7)

Ending balance

11.1

17.3

9.7

Derivatives [Member]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Beginning balance

9.0

2.4

(15.7)

OCI before reclassifications

(4.9)

11.1

13.2

Amounts reclassified from AOCI

^[3]

(8.9)

(4.5)

4.9

Net current-period OCI

(13.8)

6.6

18.1

Ending balance

(4.8)

9.0

2.4

Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]

Beginning balance

0.0

0.0

0.0

OCI before reclassifications

0.0

0.0

0.0

Amounts reclassified from AOCI

0.0

0.0

0.0

Net current-period OCI

0.0

0.0

0.0

Ending balance

0.0

0.0

0.0

Accumulated Deferred Tax Asset Valuation Allowance

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Beginning balance

(28.8)

(45.6)

0.0

OCI before reclassifications

0.0

0.0

(45.6)

Amounts reclassified from AOCI

(20.5)

^[4]

16.8

^[4]

0.0

Net current-period OCI

(20.5)

16.8

(45.6)

Ending balance

(49.3)

(28.8)

(45.6)

Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]

Beginning balance

0.0

0.0

0.0

OCI before reclassifications

0.0

0.0

0.0

Amounts reclassified from AOCI

0.0

0.0

0.0

Net current-period OCI

0.0

0.0

0.0

Ending balance

$ 0.0

$ 0.0

$ 0.0

[1]	Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 12).
[2]	No amounts were reclassified to earnings.
[3]	For 2018, following the Company’s January 1, 2018 adoption of changes issued by the FASB related to accounting guidance for derivatives, amounts related to derivatives are included in cost of goods sold or interest expense in the period or periods the hedged item affects earnings (see Note 10). For 2016 and 2017, amounts related to the effective portion of the derivatives were included in cost of goods sold in the period or periods the hedged item affects earnings, and amounts related to the ineffective portion of the derivatives were presented in selling and administrative expenses on the consolidated statements of operations (see Note 10).
[4]	Represents the net change in deferred tax asset valuation allowances on changes in AOCI balances between the balance sheet dates.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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