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Annual report pursuant to Section 13 and 15(d)

DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Debt Restructuring) (Details)

v3.6.0.2
DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Debt Restructuring) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý $ 512.2 $ 674.6 Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý Ìý Ìý $ 166.3 $ 392.9 $ 16.2
$544.2 Million 7.75% 2020 Second Lien Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý 114.1 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $400M 5.90% Notes Ìý Ìý Ìý 57.5 Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $500M 4.80% Notes Ìý Ìý Ìý 112.9 Ìý Ìý Ìý
Debt instrument, Face Amount Received in Debt Exchange of $700M 4.875% Notes Ìý Ìý Ìý 170.3 Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $800M 6.25% Notes Ìý Ìý Ìý 203.5 Ìý Ìý Ìý
Debt Instrument, Carrying Amount Received in Debt Exchange of $400M 5.90% Notes Ìý Ìý Ìý 42.0 Ìý Ìý Ìý
Debt Instrument, Carrying Value Received in Debt Exchange of $500M 4.80% Notes Ìý Ìý Ìý 82.4 Ìý Ìý Ìý
Debt instrument, Carrying Value Received in Debt Exchange of $700M 4.875% Notes Ìý Ìý Ìý 124.3 Ìý Ìý Ìý
Debt Instrument, Carrying Value Received in Debt Exchange of $800M 6.25% Notes Ìý Ìý Ìý 148.5 Ìý Ìý Ìý
Debt Instrument, Par Value $ 430.1 Ìý Ìý 544.2 430.1 544.2 Ìý
Debt, carrying value Ìý Ìý Ìý 397.2 Ìý Ìý Ìý
$544.2 Million 7.75% 2020 Second Lien Notes [Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý 6.9 Ìý Ìý 269.5 Ìý
Five Hundred Million Three Point Nine Five Two Thousand Eighteen Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý 17.6 Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý $ (19.9) Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý Ìý 311.2 Ìý
Five Hundred Million Three Point Nine Five Two Thousand Eighteen Senior Note [Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý 1.8 Ìý Ìý Ìý Ìý
Four Hundred Million Five Point Nine Zero Two Thousand And Twenty Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý 65.1 67.0 Ìý Ìý Ìý
Debt Instrument, Par Value 225.6 Ìý Ìý Ìý 225.6 290.8 Ìý
Four Hundred Million Five Point Nine Zero Two Thousand And Twenty Senior Note [Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý 28.3 24.5 Ìý Ìý Ìý
$500 Million 4.80% 2020 Senior Notes[Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý 44.7 137.8 Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt 0.6 Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Par Value 236.8 Ìý Ìý Ìý 236.8 306.7 Ìý
$500 Million 4.80% 2020 Senior Notes[Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý 19.5 54.6 Ìý Ìý Ìý
$700 Million 4.875% 2021 Senior Notes[Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý 76.3 208.5 Ìý Ìý Ìý
Debt Instrument, Par Value 309.4 Ìý Ìý Ìý 309.4 412.5 Ìý
$700 Million 4.875% 2021 Senior Notes[Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý 33.3 83.1 Ìý Ìý Ìý
$800 Million 6.25% 2040 Senior Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý 194.4 261.3 Ìý Ìý Ìý
Debt Instrument, Par Value 298.4 Ìý Ìý Ìý 298.4 $ 492.8 Ìý
$800 Million 6.25% 2040 Senior Notes [Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý 84.5 $ 107.3 Ìý Ìý Ìý
$218.5 Million 8.00% 2020 1.5 Lien Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $544M 7.75% Notes Ìý Ìý 57.0 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $500M 3.95% Notes Ìý Ìý 11.4 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $400M 5.90% Notes Ìý Ìý 26.0 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $500M 4.80% Notes Ìý Ìý 17.9 Ìý Ìý Ìý Ìý
Debt instrument, Face Amount Received in Debt Exchange of $700M 4.875% Notes Ìý Ìý 30.5 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $800M 6.25% Notes Ìý Ìý 75.7 Ìý Ìý Ìý Ìý
Debt Instrument, Carrying Amount Received in Debt Exchange of $544.2M 7.75% Notes Ìý Ìý 77.5 Ìý Ìý Ìý Ìý
Debt Instrument, Carrying Amount Received in Debt Exchange of $500M 3.95% Notes Ìý Ìý 15.5 Ìý Ìý Ìý Ìý
Debt Instrument, Carrying Amount Received in Debt Exchange of $400M 5.90% Notes Ìý Ìý 35.4 Ìý Ìý Ìý Ìý
Debt Instrument, Carrying Value Received in Debt Exchange of $500M 4.80% Notes Ìý Ìý 24.4 Ìý Ìý Ìý Ìý
Debt instrument, Carrying Value Received in Debt Exchange of $700M 4.875% Notes Ìý Ìý 41.5 Ìý Ìý Ìý Ìý
Debt Instrument, Carrying Value Received in Debt Exchange of $800M 6.25% Notes Ìý Ìý 103.0 Ìý Ìý Ìý Ìý
Debt Instrument, Par Value $ 218.5 Ìý 218.5 Ìý 218.5 Ìý Ìý
Debt, carrying value Ìý Ìý $ 297.3 Ìý Ìý Ìý Ìý
$218.5 Million 8.00% 2020 1.5 Lien Notes [Member] | Exchange of Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Extinguishment of Debt [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment/restructuring of debt Ìý Ìý Ìý Ìý $ 174.3 Ìý Ìý