Supplemental Guarantor Information (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended		9 Months Ended
	Sep. 16, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net sales		$ 1,593.8	$ 1,331.3	$ 4,508.1	$ 4,105.6
Cost of products sold (exclusive of items shown separately below)		1,438.9	1,222.4	4,191.4	3,783.9
Selling and administrative expenses (exclusive of items shown separately below)		65.6	51.5	179.7	153.3
Depreciation		49.1	48.4	146.3	144.9
Pension and OPEB expense (income)		(23.5)	(16.9)	(74.2)	(49.3)
Total operating costs		1,530.1	1,305.4	4,443.2	4,032.8
Operating profit (loss)		63.7	25.9	64.9	72.8
Interest expense		35.6	32.1	101.0	95.1
Other income (expense)		(15.3)	(2.8)	(20.2)	1.5
Income (loss) before income taxes		12.8	(9.0)	(56.3)	(20.8)
Income tax expense (benefit)		3.9	6.7	7.5	13.6
Equity in net income (loss) of subsidiaries		0	0	0	0
Net income (loss)		8.9	(15.7)	(63.8)	(34.4)
Less: Net income attributable to noncontrolling interests		16.1	16.0	46.6	47.6
Net income (loss) attributable to AK Steel Holding Corporation		(7.2)	(31.7)	(110.4)	(82.0)
Other comprehensive income (loss)		(22.6)	(3.4)	(74.0)	(52.0)
Comprehensive income (loss) attributable to AK Steel Holding Corporation		(29.8)	(35.1)	(184.4)	(134.0)
Current assets:
Cash and cash equivalents		60.8	65.7	60.8	65.7
Accounts receivable, net		707.6		707.6		525.2
Inventory, net		1,126.0		1,126.0		586.6
Deferred tax assets, current		74.7		74.7		69.6
Other current assets		76.3		76.3		46.5
Total current assets		2,045.4		2,045.4		1,273.2
Property, plant and equipment		6,335.9		6,335.9		5,871.9
Accumulated depreciation		(4,120.8)		(4,120.8)		(3,991.8)
Property, plant and equipment, net		2,215.1		2,215.1		1,880.1
Other non-current assets:
Investments in affilates		396.5		396.5		209.8
Investment in subsidiaries		0		0		0
Inter-company accounts		0		0		0
Other non-current assets		228.4		228.4		242.6
TOTAL ASSETS		4,885.4		4,885.4		3,605.7
Current liabilities:
Accounts payable		812.3		812.3		601.8
Accrued liabilities		281.7		281.7		142.9
Current portion of long-term debt		0.2		0.2		0.8
Current portion of pension and other postretirement benefit obligations		62.2		62.2		85.9
Total current liabilities		1,156.4		1,156.4		831.4
Non-current liabilities:
Long-term debt		2,406.4		2,406.4		1,506.2
Pension and other postretirement benefit obligations		832.4		832.4		965.4
Other non-current liabilities		124.4		124.4		110.0
TOTAL LIABILITIES		4,519.6		4,519.6		3,413.0
Exchangeable notes exchange feature		31.0		31.0		0
Total stockholders' equity (deficit)		(84.9)		(84.9)		(221.0)
Noncontrolling interests		419.7		419.7		413.7
TOTAL EQUITY (DEFICIT)		334.8	(211.8)	334.8	(211.8)	192.7	(91.0)
TOTAL LIABILITIES AND EQUITY		4,885.4		4,885.4		3,605.7
Condensed Consolidated Statements of Cash Flows [Abstract]
Net cash flows from operating activities				(380.6)	(223.7)
Cash flows from investing activities:
Capital investments				(39.3)	(48.1)
Investments in Magnetation joint venture				(90.0)	(50.0)
Investment in acquired business, net of cash acquired				(677.2)	0
Other investing items, net				15.4	15.1
Net cash flows from investing activities				(791.1)	(83.0)
Cash flows from financing activities:
Net borrowings under credit facility				470.0	185.0
Proceeds from issuance of long-term debt				427.1	31.9
Redemption of long-term debt				(0.6)	(27.2)
Proceeds from issuance of common stock	345.3			345.3	0
Debt issuance costs				(10.6)	(3.1)
Inter-company activity				0	0
SunCoke Middletown distributions to noncontrolling interest owners				(40.6)	(41.1)
Other financing items, net				(3.4)	(0.1)
Net cash flows from financing activities				1,187.2	145.4
Net increase (decrease) in cash and cash equivalents				15.5	(161.3)
Cash and cash equivalents, beginning of period				45.3	227.0
Cash and cash equivalents, end of period		60.8	65.7	60.8	65.7
AK Holding [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net sales		0	0	0	0
Cost of products sold (exclusive of items shown separately below)		0	0	0	0
Selling and administrative expenses (exclusive of items shown separately below)		1.0	1.0	3.6	3.5
Depreciation		0	0	0	0
Pension and OPEB expense (income)		0	0	0	0
Total operating costs		1.0	1.0	3.6	3.5
Operating profit (loss)		(1.0)	(1.0)	(3.6)	(3.5)
Interest expense		0	0	0	0
Other income (expense)		0	0	0	0
Income (loss) before income taxes		(1.0)	(1.0)	(3.6)	(3.5)
Income tax expense (benefit)		0	0	0	0
Equity in net income (loss) of subsidiaries		(6.2)	(30.7)	(106.8)	(78.5)
Net income (loss)		(7.2)	(31.7)	(110.4)	(82.0)
Less: Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to AK Steel Holding Corporation		(7.2)	(31.7)	(110.4)	(82.0)
Other comprehensive income (loss)		(22.6)	(3.4)	(74.0)	(52.0)
Comprehensive income (loss) attributable to AK Steel Holding Corporation		(29.8)	(35.1)	(184.4)	(134.0)
Current assets:
Cash and cash equivalents		0	0	0	0
Accounts receivable, net		0		0		0
Inventory, net		0		0		0
Deferred tax assets, current		0		0		0
Other current assets		0.3		0.3		0.3
Total current assets		0.3		0.3		0.3
Property, plant and equipment		0		0		0
Accumulated depreciation		0		0		0
Property, plant and equipment, net		0		0		0
Other non-current assets:
Investments in affilates		0		0		0
Investment in subsidiaries		(2,223.7)		(2,223.7)		(2,772.4)
Inter-company accounts		2,138.5		2,138.5		2,551.1
Other non-current assets		0		0		0
TOTAL ASSETS		(84.9)		(84.9)		(221.0)
Current liabilities:
Accounts payable		0		0		0
Accrued liabilities		0		0		0
Current portion of long-term debt		0		0		0
Current portion of pension and other postretirement benefit obligations		0		0		0
Total current liabilities		0		0		0
Non-current liabilities:
Long-term debt		0		0		0
Pension and other postretirement benefit obligations		0		0		0
Other non-current liabilities		0		0		0
TOTAL LIABILITIES		0		0		0
Exchangeable notes exchange feature		0		0
Total stockholders' equity (deficit)		(84.9)		(84.9)		(221.0)
Noncontrolling interests		0		0		0
TOTAL EQUITY (DEFICIT)		(84.9)		(84.9)		(221.0)
TOTAL LIABILITIES AND EQUITY		(84.9)		(84.9)		(221.0)
Condensed Consolidated Statements of Cash Flows [Abstract]
Net cash flows from operating activities				1.2	(2.8)
Cash flows from investing activities:
Capital investments				0	0
Investments in Magnetation joint venture				0	0
Investment in acquired business, net of cash acquired				0
Other investing items, net				0	0
Net cash flows from investing activities				0	0
Cash flows from financing activities:
Net borrowings under credit facility				0	0
Proceeds from issuance of long-term debt				0	0
Redemption of long-term debt				0	0
Proceeds from issuance of common stock				345.3
Debt issuance costs				0	0
Inter-company activity				(345.6)	3.5
SunCoke Middletown distributions to noncontrolling interest owners				0	0
Other financing items, net				(0.9)	(0.7)
Net cash flows from financing activities				(1.2)	2.8
Net increase (decrease) in cash and cash equivalents				0	0
Cash and cash equivalents, beginning of period				0	0
Cash and cash equivalents, end of period		0	0	0	0
AK Steel [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net sales		1,552.5	1,284.1	4,350.7	3,917.3
Cost of products sold (exclusive of items shown separately below)		1,433.1	1,206.4	4,141.1	3,688.8
Selling and administrative expenses (exclusive of items shown separately below)		65.2	50.8	177.9	152.2
Depreciation		42.7	43.1	127.5	129.8
Pension and OPEB expense (income)		(23.5)	(16.9)	(74.2)	(49.3)
Total operating costs		1,517.5	1,283.4	4,372.3	3,921.5
Operating profit (loss)		35.0	0.7	(21.6)	(4.2)
Interest expense		34.8	31.7	99.0	94.1
Other income (expense)		(15.8)	(1.9)	(23.5)	(2.6)
Income (loss) before income taxes		(15.6)	(32.9)	(144.1)	(100.9)
Income tax expense (benefit)		(1.5)	3.6	(10.8)	(0.6)
Equity in net income (loss) of subsidiaries		7.9	5.8	26.5	21.8
Net income (loss)		(6.2)	(30.7)	(106.8)	(78.5)
Less: Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to AK Steel Holding Corporation		(6.2)	(30.7)	(106.8)	(78.5)
Other comprehensive income (loss)		(22.6)	(3.4)	(74.0)	(52.0)
Comprehensive income (loss) attributable to AK Steel Holding Corporation		(28.8)	(34.1)	(180.8)	(130.5)
Current assets:
Cash and cash equivalents		21.0	28.1	21.0	28.1
Accounts receivable, net		673.7		673.7		492.4
Inventory, net		1,031.2		1,031.2		520.0
Deferred tax assets, current		74.5		74.5		69.4
Other current assets		72.6		72.6		43.9
Total current assets		1,873.0		1,873.0		1,142.5
Property, plant and equipment		5,646.8		5,646.8		5,258.4
Accumulated depreciation		(3,993.0)		(3,993.0)		(3,881.7)
Property, plant and equipment, net		1,653.8		1,653.8		1,376.7
Other non-current assets:
Investments in affilates		97.8		97.8		0
Investment in subsidiaries		1,571.3		1,571.3		1,393.8
Inter-company accounts		(3,078.5)		(3,078.5)		(3,479.7)
Other non-current assets		130.8		130.8		141.0
TOTAL ASSETS		2,248.2		2,248.2		574.3
Current liabilities:
Accounts payable		759.8		759.8		550.5
Accrued liabilities		260.6		260.6		133.6
Current portion of long-term debt		0.2		0.2		0.8
Current portion of pension and other postretirement benefit obligations		61.8		61.8		85.4
Total current liabilities		1,082.4		1,082.4		770.3
Non-current liabilities:
Long-term debt		2,406.4		2,406.4		1,506.2
Pension and other postretirement benefit obligations		828.3		828.3		960.6
Other non-current liabilities		123.8		123.8		109.6
TOTAL LIABILITIES		4,440.9		4,440.9		3,346.7
Exchangeable notes exchange feature		31.0		31.0
Total stockholders' equity (deficit)		(2,223.7)		(2,223.7)		(2,772.4)
Noncontrolling interests		0		0		0
TOTAL EQUITY (DEFICIT)		(2,223.7)		(2,223.7)		(2,772.4)
TOTAL LIABILITIES AND EQUITY		2,248.2		2,248.2		574.3
Condensed Consolidated Statements of Cash Flows [Abstract]
Net cash flows from operating activities				(476.2)	(325.4)
Cash flows from investing activities:
Capital investments				(25.2)	(31.6)
Investments in Magnetation joint venture				0	0
Investment in acquired business, net of cash acquired				(677.2)
Other investing items, net				15.4	4.8
Net cash flows from investing activities				(687.0)	(26.8)
Cash flows from financing activities:
Net borrowings under credit facility				470.0	185.0
Proceeds from issuance of long-term debt				427.1	31.9
Redemption of long-term debt				(0.6)	(27.2)
Proceeds from issuance of common stock				0
Debt issuance costs				(10.6)	(3.1)
Inter-company activity				281.4	(9.9)
SunCoke Middletown distributions to noncontrolling interest owners				0	0
Other financing items, net				0.1	0
Net cash flows from financing activities				1,167.4	176.7
Net increase (decrease) in cash and cash equivalents				4.2	(175.5)
Cash and cash equivalents, beginning of period				16.8	203.6
Cash and cash equivalents, end of period		21.0	28.1	21.0	28.1
Guarantor Subsidiaries [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net sales		69.7	63.0	209.8	196.6
Cost of products sold (exclusive of items shown separately below)		50.1	45.9	151.6	142.2
Selling and administrative expenses (exclusive of items shown separately below)		2.9	2.6	8.6	7.9
Depreciation		1.1	1.2	3.1	3.4
Pension and OPEB expense (income)		0	0	0	0
Total operating costs		54.1	49.7	163.3	153.5
Operating profit (loss)		15.6	13.3	46.5	43.1
Interest expense		0	0	0	0
Other income (expense)		1.6	1.5	4.9	4.6
Income (loss) before income taxes		17.2	14.8	51.4	47.7
Income tax expense (benefit)		6.9	5.5	20.6	18.7
Equity in net income (loss) of subsidiaries		0	0	0	0
Net income (loss)		10.3	9.3	30.8	29.0
Less: Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to AK Steel Holding Corporation		10.3	9.3	30.8	29.0
Other comprehensive income (loss)		0	0	0	0
Comprehensive income (loss) attributable to AK Steel Holding Corporation		10.3	9.3	30.8	29.0
Current assets:
Cash and cash equivalents		0.2	0.1	0.2	0.1
Accounts receivable, net		32.7		32.7		25.2
Inventory, net		31.0		31.0		19.2
Deferred tax assets, current		0		0		0
Other current assets		0.3		0.3		0.2
Total current assets		64.2		64.2		44.6
Property, plant and equipment		96.1		96.1		94.9
Accumulated depreciation		(70.9)		(70.9)		(67.9)
Property, plant and equipment, net		25.2		25.2		27.0
Other non-current assets:
Investments in affilates		0		0		0
Investment in subsidiaries		0		0		0
Inter-company accounts		1,306.3		1,306.3		1,269.6
Other non-current assets		33.0		33.0		33.0
TOTAL ASSETS		1,428.7		1,428.7		1,374.2
Current liabilities:
Accounts payable		9.7		9.7		6.3
Accrued liabilities		3.1		3.1		2.9
Current portion of long-term debt		0		0		0
Current portion of pension and other postretirement benefit obligations		0		0		0
Total current liabilities		12.8		12.8		9.2
Non-current liabilities:
Long-term debt		0		0		0
Pension and other postretirement benefit obligations		0		0		0
Other non-current liabilities		0		0		0
TOTAL LIABILITIES		12.8		12.8		9.2
Exchangeable notes exchange feature		0		0
Total stockholders' equity (deficit)		1,415.9		1,415.9		1,365.0
Noncontrolling interests		0		0		0
TOTAL EQUITY (DEFICIT)		1,415.9		1,415.9		1,365.0
TOTAL LIABILITIES AND EQUITY		1,428.7		1,428.7		1,374.2
Condensed Consolidated Statements of Cash Flows [Abstract]
Net cash flows from operating activities				18.7	37.3
Cash flows from investing activities:
Capital investments				(1.9)	(0.7)
Investments in Magnetation joint venture				0
Investment in acquired business, net of cash acquired				0
Other investing items, net				0	(0.3)
Net cash flows from investing activities				(1.9)	(1.0)
Cash flows from financing activities:
Net borrowings under credit facility				0	0
Proceeds from issuance of long-term debt				0	0
Redemption of long-term debt				0	0
Proceeds from issuance of common stock				0
Debt issuance costs				0	0
Inter-company activity				(16.6)	(36.2)
SunCoke Middletown distributions to noncontrolling interest owners				0	0
Other financing items, net				0	0
Net cash flows from financing activities				(16.6)	(36.2)
Net increase (decrease) in cash and cash equivalents				0.2	0.1
Cash and cash equivalents, beginning of period				0	0
Cash and cash equivalents, end of period		0.2	0.1	0.2	0.1
Other Non-Guarantor Subsidiaries [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net sales		135.7	137.3	393.7	430.0
Cost of products sold (exclusive of items shown separately below)		104.4	112.5	309.0	360.8
Selling and administrative expenses (exclusive of items shown separately below)		7.7	6.8	22.3	20.0
Depreciation		5.3	4.1	15.7	11.7
Pension and OPEB expense (income)		0	0	0	0
Total operating costs		117.4	123.4	347.0	392.5
Operating profit (loss)		18.3	13.9	46.7	37.5
Interest expense		0.8	0.4	2.0	1.0
Other income (expense)		(1.1)	(2.4)	(1.6)	(0.5)
Income (loss) before income taxes		16.4	11.1	43.1	36.0
Income tax expense (benefit)		0.2	(1.9)	(1.0)	(4.4)
Equity in net income (loss) of subsidiaries		0	0	0	0
Net income (loss)		16.2	13.0	44.1	40.4
Less: Net income attributable to noncontrolling interests		16.1	16.0	46.6	47.6
Net income (loss) attributable to AK Steel Holding Corporation		0.1	(3.0)	(2.5)	(7.2)
Other comprehensive income (loss)		(2.5)	1.2	(2.6)	0.5
Comprehensive income (loss) attributable to AK Steel Holding Corporation		(2.4)	(1.8)	(5.1)	(6.7)
Current assets:
Cash and cash equivalents		39.6	37.5	39.6	37.5
Accounts receivable, net		33.3		33.3		35.9
Inventory, net		78.1		78.1		58.5
Deferred tax assets, current		0.2		0.2		0.2
Other current assets		3.1		3.1		2.1
Total current assets		154.3		154.3		125.2
Property, plant and equipment		593.0		593.0		518.6
Accumulated depreciation		(56.9)		(56.9)		(42.2)
Property, plant and equipment, net		536.1		536.1		476.4
Other non-current assets:
Investments in affilates		298.7		298.7		209.8
Investment in subsidiaries		0		0		0
Inter-company accounts		(403.0)		(403.0)		(372.9)
Other non-current assets		64.6		64.6		68.6
TOTAL ASSETS		650.7		650.7		507.1
Current liabilities:
Accounts payable		43.6		43.6		45.6
Accrued liabilities		18.0		18.0		6.4
Current portion of long-term debt		0		0		0
Current portion of pension and other postretirement benefit obligations		0.4		0.4		0.5
Total current liabilities		62.0		62.0		52.5
Non-current liabilities:
Long-term debt		0		0		0
Pension and other postretirement benefit obligations		4.1		4.1		4.8
Other non-current liabilities		0.6		0.6		0.4
TOTAL LIABILITIES		66.7		66.7		57.7
Exchangeable notes exchange feature		0		0
Total stockholders' equity (deficit)		164.3		164.3		35.7
Noncontrolling interests		419.7		419.7		413.7
TOTAL EQUITY (DEFICIT)		584.0		584.0		449.4
TOTAL LIABILITIES AND EQUITY		650.7		650.7		507.1
Condensed Consolidated Statements of Cash Flows [Abstract]
Net cash flows from operating activities				70.7	73.1
Cash flows from investing activities:
Capital investments				(12.2)	(15.8)
Investments in Magnetation joint venture				(90.0)	(50.0)
Investment in acquired business, net of cash acquired				0
Other investing items, net				0	10.6
Net cash flows from investing activities				(102.2)	(55.2)
Cash flows from financing activities:
Net borrowings under credit facility				0	0
Proceeds from issuance of long-term debt				0	0
Redemption of long-term debt				0	0
Proceeds from issuance of common stock				0
Debt issuance costs				0	0
Inter-company activity				85.8	36.7
SunCoke Middletown distributions to noncontrolling interest owners				(40.6)	(41.1)
Other financing items, net				(2.6)	0.6
Net cash flows from financing activities				42.6	(3.8)
Net increase (decrease) in cash and cash equivalents				11.1	14.1
Cash and cash equivalents, beginning of period				28.5	23.4
Cash and cash equivalents, end of period		39.6	37.5	39.6	37.5
Eliminations [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net sales		(164.1)	(153.1)	(446.1)	(438.3)
Cost of products sold (exclusive of items shown separately below)		(148.7)	(142.4)	(410.3)	(407.9)
Selling and administrative expenses (exclusive of items shown separately below)		(11.2)	(9.7)	(32.7)	(30.3)
Depreciation		0	0	0	0
Pension and OPEB expense (income)		0	0	0	0
Total operating costs		(159.9)	(152.1)	(443.0)	(438.2)
Operating profit (loss)		(4.2)	(1.0)	(3.1)	(0.1)
Interest expense		0	0	0	0
Other income (expense)		0	0	0	0
Income (loss) before income taxes		(4.2)	(1.0)	(3.1)	(0.1)
Income tax expense (benefit)		(1.7)	(0.5)	(1.3)	(0.1)
Equity in net income (loss) of subsidiaries		(1.7)	24.9	80.3	56.7
Net income (loss)		(4.2)	24.4	78.5	56.7
Less: Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to AK Steel Holding Corporation		(4.2)	24.4	78.5	56.7
Other comprehensive income (loss)		25.1	2.2	76.6	51.5
Comprehensive income (loss) attributable to AK Steel Holding Corporation		20.9	26.6	155.1	108.2
Current assets:
Cash and cash equivalents		0	0	0	0
Accounts receivable, net		(32.1)		(32.1)		(28.3)
Inventory, net		(14.3)		(14.3)		(11.1)
Deferred tax assets, current		0		0		0
Other current assets		0		0		0
Total current assets		(46.4)		(46.4)		(39.4)
Property, plant and equipment		0		0		0
Accumulated depreciation		0		0		0
Property, plant and equipment, net		0		0		0
Other non-current assets:
Investments in affilates		0		0		0
Investment in subsidiaries		652.4		652.4		1,378.6
Inter-company accounts		36.7		36.7		31.9
Other non-current assets		0		0		0
TOTAL ASSETS		642.7		642.7		1,371.1
Current liabilities:
Accounts payable		(0.8)		(0.8)		(0.6)
Accrued liabilities		0		0		0
Current portion of long-term debt		0		0		0
Current portion of pension and other postretirement benefit obligations		0		0		0
Total current liabilities		(0.8)		(0.8)		(0.6)
Non-current liabilities:
Long-term debt		0		0		0
Pension and other postretirement benefit obligations		0		0		0
Other non-current liabilities		0		0		0
TOTAL LIABILITIES		(0.8)		(0.8)		(0.6)
Exchangeable notes exchange feature		0		0
Total stockholders' equity (deficit)		643.5		643.5		1,371.7
Noncontrolling interests		0		0		0
TOTAL EQUITY (DEFICIT)		643.5		643.5		1,371.7
TOTAL LIABILITIES AND EQUITY		642.7		642.7		1,371.1
Condensed Consolidated Statements of Cash Flows [Abstract]
Net cash flows from operating activities				5.0	(5.9)
Cash flows from investing activities:
Capital investments				0	0
Investments in Magnetation joint venture				0	0
Investment in acquired business, net of cash acquired				0
Other investing items, net				0	0
Net cash flows from investing activities				0	0
Cash flows from financing activities:
Net borrowings under credit facility				0	0
Proceeds from issuance of long-term debt				0	0
Redemption of long-term debt				0	0
Proceeds from issuance of common stock				0
Debt issuance costs				0	0
Inter-company activity				(5.0)	5.9
SunCoke Middletown distributions to noncontrolling interest owners				0	0
Other financing items, net				0	0
Net cash flows from financing activities				(5.0)	5.9
Net increase (decrease) in cash and cash equivalents				0	0
Cash and cash equivalents, beginning of period				0	0
Cash and cash equivalents, end of period		$ 0	$ 0	$ 0	$ 0
Senior Secured Notes Due December 2018 [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.75%		8.75%		8.75%
Senior Notes Due May 2020 [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.625%		7.625%		7.625%
Senior Notes Due October 2021 [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.625%		7.625%
Senior Notes Due April 2022 [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.375%		8.375%		8.375%
Exchangeable Senior Notes Due November 2019 [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.00%		5.00%		5.00%