Guarantors - Consolidating Statements of Cash Flows (Details) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended
	Jul. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Condensed Consolidating Statements of Cash Flows
Net income (loss)		$ 4,400,000		$ (5,300,000)	$ 19,100,000	$ (19,000,000)
Equity income (loss) related to investment in subsidiaries					0	0
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		50,600,000		39,100,000	134,600,000	101,600,000
Non-cash interest expense					11,100,000	2,300,000
Stock-based compensation expense					8,500,000	10,500,000
Provision for bad debt					900,000	300,000
Asset impairments and loss on disposal		0		4,900,000	0	13,500,000
Change in operating assets and liabilities:
Rent receivables and other assets					(29,000,000)	(16,900,000)
Accounts payable and accrued expenses					2,600,000	9,900,000
Deferred revenues					(6,200,000)	800,000
Due to affiliates					0	(1,500,000)
Net cash provided by operating activities					141,600,000	101,500,000
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					(131,100,000)	(17,300,000)
Capital expenditures – other development					(425,400,000)	(140,900,000)
Business acquisition, net of cash acquired					0	(398,400,000)
Investment in and loans to subsidiaries					0	0
Changes in restricted cash					1,500,000	0
Return of investment					0	0
Intercompany borrowings					0
Intercompany contributions/distributions						0
Net cash used in investing activities					(555,000,000)	(556,600,000)
Cash flows from financing activities:
Issuance of common stock			$ 256,000,000		448,600,000	799,300,000
Stock issuance costs					(1,600,000)	(800,000)
Acquisition of operating partnership units					0	(596,400,000)
Dividends paid					(82,800,000)	(58,300,000)
Intercompany borrowings					0	0
Borrowings from credit facility					530,000,000	220,000,000
Proceeds from issuance of debt					0	103,800,000
Payments on credit facility					(460,000,000)	0
Payments on capital leases and lease financing arrangements					(6,800,000)	(3,800,000)
Tax payment upon exercise of equity awards					(13,700,000)	0
Contributions/distributions from parent					0	0
Payment of note payable	$ (1,400,000)				(1,500,000)	0
Debt issuance costs					(2,100,000)	(5,400,000)
Net cash provided by financing activities					410,100,000	458,400,000
Net increase (decrease) in cash and cash equivalents					(3,300,000)	3,300,000
Cash and cash equivalents at beginning of period			14,300,000		14,300,000	36,500,000
Cash and cash equivalents at end of period		11,000,000		39,800,000	11,000,000	39,800,000
General Partner
Condensed Consolidating Statements of Cash Flows
Net income (loss)		100,000		0	200,000	(200,000)
Equity income (loss) related to investment in subsidiaries					(200,000)	200,000
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		0		0	0	0
Non-cash interest expense					0	0
Stock-based compensation expense					0	0
Provision for bad debt					0	0
Asset impairments and loss on disposal				0	0	0
Change in operating assets and liabilities:
Rent receivables and other assets					0	0
Accounts payable and accrued expenses					0	0
Deferred revenues					0	0
Due to affiliates						0
Net cash provided by operating activities					0	0
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					0	0
Capital expenditures – other development					0	0
Business acquisition, net of cash acquired						0
Investment in and loans to subsidiaries					(4,500,000)	0
Changes in restricted cash					0
Return of investment					0	(2,000,000)
Intercompany borrowings					0
Intercompany contributions/distributions						0
Net cash used in investing activities					(4,500,000)	(2,000,000)
Cash flows from financing activities:
Issuance of common stock					0	0
Stock issuance costs					0	0
Acquisition of operating partnership units						0
Dividends paid					0	0
Intercompany borrowings					0	0
Borrowings from credit facility					0	0
Proceeds from issuance of debt						0
Payments on credit facility					0
Payments on capital leases and lease financing arrangements					0	0
Tax payment upon exercise of equity awards					0
Contributions/distributions from parent					4,500,000	2,000,000
Payment of note payable					0
Debt issuance costs					0	0
Net cash provided by financing activities					4,500,000	2,000,000
Net increase (decrease) in cash and cash equivalents					0	0
Cash and cash equivalents at beginning of period			0		0	0
Cash and cash equivalents at end of period		0		0	0	0
Eliminations/Consolidations
Condensed Consolidating Statements of Cash Flows
Net income (loss)		(24,700,000)		(800,000)	(71,200,000)	11,800,000
Equity income (loss) related to investment in subsidiaries					72,000,000	(10,500,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		0		0	0	0
Non-cash interest expense					1,100,000	0
Stock-based compensation expense					0	0
Provision for bad debt					0	0
Asset impairments and loss on disposal				0	0	0
Change in operating assets and liabilities:
Rent receivables and other assets					0	0
Accounts payable and accrued expenses					0	0
Deferred revenues					0	0
Due to affiliates						0
Net cash provided by operating activities					1,900,000	1,300,000
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					0	0
Capital expenditures – other development					0	0
Business acquisition, net of cash acquired						0
Investment in and loans to subsidiaries					900,900,000	0
Changes in restricted cash					0
Return of investment					(80,800,000)	(97,300,000)
Intercompany borrowings					(70,300,000)
Intercompany contributions/distributions						323,800,000
Net cash used in investing activities					749,800,000	226,500,000
Cash flows from financing activities:
Issuance of common stock					0	0
Stock issuance costs					0	0
Acquisition of operating partnership units						0
Dividends paid					80,800,000	98,800,000
Intercompany borrowings					68,400,000	(323,800,000)
Borrowings from credit facility					0	0
Proceeds from issuance of debt						0
Payments on credit facility					0
Payments on capital leases and lease financing arrangements					0	0
Tax payment upon exercise of equity awards					0
Contributions/distributions from parent					(900,900,000)	(2,800,000)
Payment of note payable					0
Debt issuance costs					0	0
Net cash provided by financing activities					(751,700,000)	(227,800,000)
Net increase (decrease) in cash and cash equivalents					0	0
Cash and cash equivalents at beginning of period			0		0	0
Cash and cash equivalents at end of period		0		0	0	0
Total Stockholders' Equity/ Parent’s Net Investment
Condensed Consolidating Statements of Cash Flows
Net income (loss)		4,600,000		(4,500,000)	17,500,000	(15,700,000)
Equity income (loss) related to investment in subsidiaries					(17,500,000)	15,700,000
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		0		0	0	0
Non-cash interest expense					0	0
Stock-based compensation expense					0	0
Provision for bad debt					0	0
Asset impairments and loss on disposal				0	0	0
Change in operating assets and liabilities:
Rent receivables and other assets					0	0
Accounts payable and accrued expenses					0	0
Deferred revenues					0	0
Due to affiliates						0
Net cash provided by operating activities					0	0
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					0	0
Capital expenditures – other development					0	0
Business acquisition, net of cash acquired						0
Investment in and loans to subsidiaries					(448,200,000)	(202,900,000)
Changes in restricted cash					0
Return of investment					80,800,000	41,300,000
Intercompany borrowings					14,900,000
Intercompany contributions/distributions						1,700,000
Net cash used in investing activities					(352,500,000)	(159,900,000)
Cash flows from financing activities:
Issuance of common stock					448,600,000	799,300,000
Stock issuance costs					(1,600,000)	(800,000)
Acquisition of operating partnership units						(596,400,000)
Dividends paid					(80,800,000)	(40,500,000)
Intercompany borrowings					0	0
Borrowings from credit facility					0	0
Proceeds from issuance of debt						0
Payments on credit facility					0
Payments on capital leases and lease financing arrangements					0	0
Tax payment upon exercise of equity awards					(13,700,000)
Contributions/distributions from parent					0	0
Payment of note payable					0
Debt issuance costs					0	0
Net cash provided by financing activities					352,500,000	161,600,000
Net increase (decrease) in cash and cash equivalents					0	1,700,000
Cash and cash equivalents at beginning of period			0		0	0
Cash and cash equivalents at end of period		0		1,700,000	0	1,700,000
LP Co-issuer
Condensed Consolidating Statements of Cash Flows
Net income (loss)		4,600,000		(5,200,000)	17,500,000	(20,300,000)
Equity income (loss) related to investment in subsidiaries					(53,500,000)	(7,800,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		0		0	0	0
Non-cash interest expense					10,000,000	2,300,000
Stock-based compensation expense					0	0
Provision for bad debt					0	0
Asset impairments and loss on disposal				0	0	0
Change in operating assets and liabilities:
Rent receivables and other assets					0	(800,000)
Accounts payable and accrued expenses					(100,000)	9,300,000
Deferred revenues					0	0
Due to affiliates						0
Net cash provided by operating activities					(26,100,000)	(17,300,000)
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					0	0
Capital expenditures – other development					0	0
Business acquisition, net of cash acquired						0
Investment in and loans to subsidiaries					(448,200,000)	0
Changes in restricted cash					0
Return of investment					0	81,000,000
Intercompany borrowings					55,900,000
Intercompany contributions/distributions						(323,800,000)
Net cash used in investing activities					(392,300,000)	(242,800,000)
Cash flows from financing activities:
Issuance of common stock					0	0
Stock issuance costs					0	0
Acquisition of operating partnership units						0
Dividends paid					(82,800,000)	(58,300,000)
Intercompany borrowings					(14,900,000)	0
Borrowings from credit facility					530,000,000	220,000,000
Proceeds from issuance of debt						103,800,000
Payments on credit facility					(460,000,000)
Payments on capital leases and lease financing arrangements					0	0
Tax payment upon exercise of equity awards					0
Contributions/distributions from parent					448,200,000	0
Payment of note payable					0
Debt issuance costs					(2,100,000)	(5,400,000)
Net cash provided by financing activities					418,400,000	260,100,000
Net increase (decrease) in cash and cash equivalents					0	0
Cash and cash equivalents at beginning of period			0		0	0
Cash and cash equivalents at end of period		0		0	0	0
Finance Co-issuer
Condensed Consolidating Statements of Cash Flows
Net income (loss)		0		0	0	0
Equity income (loss) related to investment in subsidiaries					0	0
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		0		0	0	0
Non-cash interest expense					0	0
Stock-based compensation expense					0	0
Provision for bad debt					0	0
Asset impairments and loss on disposal				0	0	0
Change in operating assets and liabilities:
Rent receivables and other assets					0	0
Accounts payable and accrued expenses					0	0
Deferred revenues					0	0
Due to affiliates						0
Net cash provided by operating activities					0	0
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					0	0
Capital expenditures – other development					0	0
Business acquisition, net of cash acquired						0
Investment in and loans to subsidiaries					0	0
Changes in restricted cash					0
Return of investment					0	0
Intercompany borrowings					0
Intercompany contributions/distributions						0
Net cash used in investing activities					0	0
Cash flows from financing activities:
Issuance of common stock					0	0
Stock issuance costs					0	0
Acquisition of operating partnership units						0
Dividends paid					0	0
Intercompany borrowings					0	0
Borrowings from credit facility					0	0
Proceeds from issuance of debt						0
Payments on credit facility					0
Payments on capital leases and lease financing arrangements					0	0
Tax payment upon exercise of equity awards					0
Contributions/distributions from parent					0	0
Payment of note payable					0
Debt issuance costs					0	0
Net cash provided by financing activities					0	0
Net increase (decrease) in cash and cash equivalents					0	0
Cash and cash equivalents at beginning of period			0		0	0
Cash and cash equivalents at end of period		0		0	0	0
Guarantor Subsidiaries
Condensed Consolidating Statements of Cash Flows
Net income (loss)		16,800,000		6,000,000	53,500,000	7,800,000
Equity income (loss) related to investment in subsidiaries					(800,000)	2,400,000
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		53,600,000		38,300,000	136,300,000	99,500,000
Non-cash interest expense					0	0
Stock-based compensation expense					8,500,000	10,500,000
Provision for bad debt					900,000	300,000
Asset impairments and loss on disposal				4,900,000	0	13,500,000
Change in operating assets and liabilities:
Rent receivables and other assets					(29,000,000)	(17,900,000)
Accounts payable and accrued expenses					2,600,000	(700,000)
Deferred revenues					(6,200,000)	800,000
Due to affiliates						(1,500,000)
Net cash provided by operating activities					165,800,000	114,700,000
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					(131,100,000)	(17,300,000)
Capital expenditures – other development					(424,400,000)	(140,200,000)
Business acquisition, net of cash acquired						(398,400,000)
Investment in and loans to subsidiaries					0	202,900,000
Changes in restricted cash					1,500,000
Return of investment					0	(23,000,000)
Intercompany borrowings					0
Intercompany contributions/distributions						(1,700,000)
Net cash used in investing activities					(554,000,000)	(377,700,000)
Cash flows from financing activities:
Issuance of common stock					0	0
Stock issuance costs					0	0
Acquisition of operating partnership units						0
Dividends paid					0	(58,300,000)
Intercompany borrowings					(53,500,000)	323,800,000
Borrowings from credit facility					0	0
Proceeds from issuance of debt						0
Payments on credit facility					0
Payments on capital leases and lease financing arrangements					(6,000,000)	(3,000,000)
Tax payment upon exercise of equity awards					0
Contributions/distributions from parent					448,200,000	0
Payment of note payable					(1,500,000)
Debt issuance costs					0	0
Net cash provided by financing activities					387,200,000	262,500,000
Net increase (decrease) in cash and cash equivalents					(1,000,000)	(500,000)
Cash and cash equivalents at beginning of period			10,400,000		10,400,000	33,500,000
Cash and cash equivalents at end of period		9,400,000		33,000,000	9,400,000	33,000,000
Non-Guarantor Subsidiaries
Condensed Consolidating Statements of Cash Flows
Net income (loss)		3,000,000		(800,000)	1,600,000	(2,400,000)
Equity income (loss) related to investment in subsidiaries					0	0
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		(3,000,000)		800,000	(1,700,000)	2,100,000
Non-cash interest expense					0	0
Stock-based compensation expense					0	0
Provision for bad debt					0	0
Asset impairments and loss on disposal				0	0	0
Change in operating assets and liabilities:
Rent receivables and other assets					0	1,800,000
Accounts payable and accrued expenses					100,000	1,300,000
Deferred revenues					0	0
Due to affiliates						0
Net cash provided by operating activities					0	2,800,000
Cash flows from investing activities:
Capital expenditures – purchase of fixed assets					0	0
Capital expenditures – other development					(1,000,000)	(700,000)
Business acquisition, net of cash acquired						0
Investment in and loans to subsidiaries					0	0
Changes in restricted cash					0
Return of investment					0	0
Intercompany borrowings					(500,000)
Intercompany contributions/distributions						0
Net cash used in investing activities					(1,500,000)	(700,000)
Cash flows from financing activities:
Issuance of common stock					0	0
Stock issuance costs					0	0
Acquisition of operating partnership units						0
Dividends paid					0	0
Intercompany borrowings					0	0
Borrowings from credit facility					0	0
Proceeds from issuance of debt						0
Payments on credit facility					0
Payments on capital leases and lease financing arrangements					(800,000)	(800,000)
Tax payment upon exercise of equity awards					0
Contributions/distributions from parent					0	800,000
Payment of note payable					0
Debt issuance costs					0	0
Net cash provided by financing activities					(800,000)	0
Net increase (decrease) in cash and cash equivalents					(2,300,000)	2,100,000
Cash and cash equivalents at beginning of period			$ 3,900,000		3,900,000	3,000,000
Cash and cash equivalents at end of period		$ 1,600,000		$ 5,100,000	$ 1,600,000	$ 5,100,000