Organization And Summary Of Significant Accounting Policies - Impacts to Previously Reported Results, Statement of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Adjustments to reconcile net loss to net cash used in operating activities, net of effect of acquisitions:
Net loss		$ (172,146)	$ (113,911)	$ (483,843)	$ (147,597)	$ (753,566)	$ (70,838)	$ (109,577)	$ (236,886)	$ (917,496)	$ (1,170,868)	$ (521,415)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization										127,204	185,283	170,537
Loss on sale and impairment of residential lease assets										251,984	624,335	(7,263)
Impairment of equity method investment										0	89,564	90,946
Equity in earnings of unconsolidated investees										17,815	(25,938)	(14,295)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable										(175)	(1,191)	(33,465)
Contract assets										(43,509)	10,660	62,161
Project assets										39,512	2,393	(3,601)
Prepaid expenses and other assets										22,763	110,530	3,187
Long-term financing receivables, net										(182,937)	(123,674)	(172,272)
Accounts payable and other accrued liabilities										(127,286)	(216,349)	(18,780)
Contract liabilities										(30,495)	145,171	(47,622)
Net cash used in operating activities										(543,389)	(267,412)	(312,283)
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents										(180,574)	30,125	(506,552)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period	[1]				544,337				514,212	544,337	514,212	1,020,764
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	[1]	$ 363,763				544,337				363,763	544,337	514,212
As Reported
Adjustments to reconcile net loss to net cash used in operating activities, net of effect of acquisitions:
Net loss											(1,092,910)	(543,844)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization											188,698	174,209
Loss on sale and impairment of residential lease assets												0
Impairment of equity method investment											8,607
Equity in earnings of unconsolidated investees											(20,211)	(28,070)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable											(458)
Costs and estimated earnings in excess of billings											14,577	6,198
Contract assets											0	0
Project assets											19,153	33,248
Prepaid expenses and other assets											158,868	48,758
Long-term financing receivables, net											(123,842)	(172,542)
Accounts payable and other accrued liabilities											(192,096)	(12,146)
Billings in excess of costs and estimated earnings											(68,432)	(38,204)
Customer advances											113,626	(16,969)
Contract liabilities											0	0
Net cash used in operating activities											(267,412)	(312,283)
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents											30,125	(506,553)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period					544,337				514,212	544,337	514,212	1,020,764
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period						544,337					544,337	514,212
Adoption of ASC 606 | Adoption of ASC 606
Adjustments to reconcile net loss to net cash used in operating activities, net of effect of acquisitions:
Net loss											(77,958)	22,429
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization											(3,415)	(3,672)
Loss on sale and impairment of residential lease assets												(7,263)
Impairment of equity method investment											80,957
Equity in earnings of unconsolidated investees											(5,727)	13,775
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable											(733)
Costs and estimated earnings in excess of billings											(14,577)	(6,198)
Contract assets											10,660	62,161
Project assets											(16,760)	(36,849)
Prepaid expenses and other assets											(48,338)	(45,571)
Long-term financing receivables, net											168	270
Accounts payable and other accrued liabilities											(24,253)	(6,634)
Billings in excess of costs and estimated earnings											68,432	38,204
Customer advances											(113,626)	16,969
Contract liabilities											145,171	(47,622)
Net cash used in operating activities											0	0
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents											0	0
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period					0				0	0	0	0
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period						0					0	0
Adjustment before segment changes
Adjustments to reconcile net loss to net cash used in operating activities, net of effect of acquisitions:
Net loss											(1,170,868)	(521,415)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization											185,283	170,537
Loss on sale and impairment of residential lease assets												(7,263)
Impairment of equity method investment											89,564
Equity in earnings of unconsolidated investees											(25,938)	(14,295)
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable											(1,191)
Costs and estimated earnings in excess of billings											0	0
Contract assets											10,660	62,161
Project assets											2,393	(3,601)
Prepaid expenses and other assets											110,530	3,187
Long-term financing receivables, net											(123,674)	(172,272)
Accounts payable and other accrued liabilities											(216,349)	(18,780)
Billings in excess of costs and estimated earnings											0	0
Customer advances											0	0
Contract liabilities											145,171	(47,622)
Net cash used in operating activities											(267,412)	(312,283)
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents											30,125	(506,553)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period					$ 544,337				$ 514,212	$ 544,337	514,212	1,020,764
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period						$ 544,337					$ 544,337	$ 514,212

[1] Cash, cash equivalents, restricted cash and restricted cash equivalents" balance consisted of "Cash and cash equivalents", "Restricted cash and cash equivalents, current portion" and "Restricted cash and cash equivalents, net of current portion" financial statement line items in the Consolidated Balance Sheets for the respective periods.