Prologis 10-K 13 Feb 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 11, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Trading Symbol	PLD
Entity Registrant Name	Prologis, Inc.
Entity Central Index Key	1,045,609
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		630,350,000
Entity Public Float			$ 34,758,146,078

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Investments in real estate properties	$ 34,586,987	$ 25,838,644
Less accumulated depreciation	4,656,680	4,059,348
Net investments in real estate properties	29,930,307	21,779,296
Investments in and advances to unconsolidated entities	5,745,294	5,496,450
Assets held for sale or contribution	622,288	342,060
Notes receivable backed by real estate	0	34,260
Net investments in real estate	36,297,889	27,652,066
Cash and cash equivalents	343,856	447,046
Other assets	1,775,919	1,381,963
Total assets	38,417,664	29,481,075
Liabilities:
Debt	11,089,815	9,412,631
Accounts payable and accrued expenses	760,515	702,804
Other liabilities	766,446	659,899
Total liabilities	12,616,776	10,775,334
Prologis, Inc. stockholders’ equity:
Series Q preferred stock at stated liquidation preference of $50 per share; $0.01 par value; 1,379 shares issued and outstanding and 100,000 preferred shares authorized at December 31, 2018 and 2017	68,948	68,948
Common stock; $0.01 par value; 629,616 and 532,186 shares issued and outstanding at December 31, 2018 and 2017, respectively	6,296	5,322
Additional paid-in capital	25,685,987	19,363,007
Accumulated other comprehensive loss	(1,084,671)	(901,658)
Distributions in excess of net earnings	(2,378,467)	(2,904,461)
Total Prologis, Inc. stockholders’ equity	22,298,093	15,631,158
Partners' capital:
Noncontrolling interests	3,502,795	3,074,583
Total equity	25,800,888	18,705,741
Total liabilities and equity	38,417,664	29,481,075
Prologis, L.P. [Member]
ASSETS
Investments in real estate properties	34,586,987	25,838,644
Less accumulated depreciation	4,656,680	4,059,348
Net investments in real estate properties	29,930,307	21,779,296
Investments in and advances to unconsolidated entities	5,745,294	5,496,450
Assets held for sale or contribution	622,288	342,060
Notes receivable backed by real estate	0	34,260
Net investments in real estate	36,297,889	27,652,066
Cash and cash equivalents	343,856	447,046
Other assets	1,775,919	1,381,963
Total assets	38,417,664	29,481,075
Liabilities:
Debt	11,089,815	9,412,631
Accounts payable and accrued expenses	760,515	702,804
Other liabilities	766,446	659,899
Total liabilities	12,616,776	10,775,334
Partners' capital:
Total partners' capital	22,964,419	16,045,499
Noncontrolling interests	2,836,469	2,660,242
Total capital	25,800,888	18,705,741
Total liabilities and equity	38,417,664	29,481,075
Prologis, L.P. [Member] | Preferred [Member]
Partners' capital:
General partner	68,948	68,948
Prologis, L.P. [Member] | Common [Member]
Partners' capital:
General partner	22,229,145	15,562,210
Limited partners	371,281	165,401
Prologis, L.P. [Member] | Class A Common [Member]
Partners' capital:
Limited partners	$ 295,045	$ 248,940

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Preferred stock, liquidation preference per share	$ 50	$ 50
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	1,379,000	1,379,000
Preferred stock, shares outstanding	1,379,000	1,379,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	629,616,000	532,186,000
Common stock, shares outstanding	629,616,000	532,186,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Rental	$ 1,858,889	$ 1,737,839	$ 1,734,844
Rental recoveries	529,902	487,302	485,565
Strategic capital	406,300	373,889	303,562
Development management and other	9,358	19,104	9,164
Total revenues	2,804,449	2,618,134	2,533,135
Expenses:
Rental	600,648	569,523	568,870
Strategic capital	157,040	155,141	128,506
General and administrative	238,985	231,059	222,067
Depreciation and amortization	947,214	879,140	930,985
Other	13,560	12,205	14,329
Total expenses	1,957,447	1,847,068	1,864,757
Operating income	847,002	771,066	668,378
Other income (expense):
Earnings from unconsolidated entities, net	298,260	248,567	206,307
Interest expense	(229,141)	(274,486)	(303,146)
Interest and other income, net	14,663	13,731	8,101
Gains on real estate transactions, net	840,996	1,182,965	757,398
Foreign currency and derivative gains (losses), net	117,096	(57,896)	7,582
Gains (losses) on early extinguishment of debt, net	(2,586)	(68,379)	2,484
Total other income	1,039,288	1,044,502	678,726
Earnings before income taxes	1,886,290	1,815,568	1,347,104
Total income tax expense	63,330	54,609	54,564
Consolidated net earnings	1,822,960	1,760,959	1,292,540
Less net earnings attributable to noncontrolling interests	173,599	108,634	82,608
Net earnings attributable to controlling interests	1,649,361	1,652,325	1,209,932
Less preferred stock/unit dividends/distributions	5,935	6,499	6,714
Loss on preferred stock/unit repurchase	0	3,895	0
Net earnings attributable to common stockholders/unitholders	$ 1,643,426	$ 1,641,931	$ 1,203,218
Weighted average common shares/units outstanding - Basic	567,367	530,400	526,103
Weighted average common shares/units outstanding - Diluted	590,239	552,300	546,666
Net earnings per share attributable to common stockholders/unitholders - Basic	$ 2.90	$ 3.10	$ 2.29
Net earnings per share attributable to common stockholders/unitholders - Diluted	2.87	3.06	2.27
Dividends or distributions per common share or unit	$ 1.92	$ 1.76	$ 1.68
Prologis, L.P. [Member]
Revenues:
Rental	$ 1,858,889	$ 1,737,839	$ 1,734,844
Rental recoveries	529,902	487,302	485,565
Strategic capital	406,300	373,889	303,562
Development management and other	9,358	19,104	9,164
Total revenues	2,804,449	2,618,134	2,533,135
Expenses:
Rental	600,648	569,523	568,870
Strategic capital	157,040	155,141	128,506
General and administrative	238,985	231,059	222,067
Depreciation and amortization	947,214	879,140	930,985
Other	13,560	12,205	14,329
Total expenses	1,957,447	1,847,068	1,864,757
Operating income	847,002	771,066	668,378
Other income (expense):
Earnings from unconsolidated entities, net	298,260	248,567	206,307
Interest expense	(229,141)	(274,486)	(303,146)
Interest and other income, net	14,663	13,731	8,101
Gains on real estate transactions, net	840,996	1,182,965	757,398
Foreign currency and derivative gains (losses), net	117,096	(57,896)	7,582
Gains (losses) on early extinguishment of debt, net	(2,586)	(68,379)	2,484
Total other income	1,039,288	1,044,502	678,726
Earnings before income taxes	1,886,290	1,815,568	1,347,104
Total income tax expense	63,330	54,609	54,564
Consolidated net earnings	1,822,960	1,760,959	1,292,540
Less net earnings attributable to noncontrolling interests	124,712	63,620	48,307
Net earnings attributable to controlling interests	1,698,248	1,697,339	1,244,233
Less preferred stock/unit dividends/distributions	5,935	6,499	6,714
Loss on preferred stock/unit repurchase	0	3,895	0
Net earnings attributable to common stockholders/unitholders	$ 1,692,313	$ 1,686,945	$ 1,237,519
Weighted average common shares/units outstanding - Basic	575,798	536,335	532,326
Weighted average common shares/units outstanding - Diluted	590,239	552,300	546,666
Net earnings per share attributable to common stockholders/unitholders - Basic	$ 2.90	$ 3.10	$ 2.29
Net earnings per share attributable to common stockholders/unitholders - Diluted	2.87	3.06	2.27
Dividends or distributions per common share or unit	$ 1.92	$ 1.76	$ 1.68

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated net earnings	$ 1,822,960	$ 1,760,959	$ 1,292,540
Other comprehensive income (loss):
Foreign currency translation gains (losses), net	(190,590)	63,455	(135,958)
Unrealized gains (losses) on derivative contracts, net	(1,323)	22,591	(1,349)
Comprehensive income	1,631,047	1,847,005	1,155,233
Net earnings attributable to noncontrolling interests	(173,599)	(108,634)	(82,608)
Other comprehensive loss (income) attributable to noncontrolling interests	8,900	(50,231)	(8,737)
Comprehensive income attributable to common stockholders / unitholders	1,466,348	1,688,140	1,063,888
Prologis, L.P. [Member]
Consolidated net earnings	1,822,960	1,760,959	1,292,540
Other comprehensive income (loss):
Foreign currency translation gains (losses), net	(190,590)	63,455	(135,958)
Unrealized gains (losses) on derivative contracts, net	(1,323)	22,591	(1,349)
Comprehensive income	1,631,047	1,847,005	1,155,233
Net earnings attributable to noncontrolling interests	(124,712)	(63,620)	(48,307)
Other comprehensive loss (income) attributable to noncontrolling interests	3,416	(49,278)	(12,601)
Comprehensive income attributable to common stockholders / unitholders	$ 1,509,751	$ 1,734,107	$ 1,094,325

Consolidated Statement of Equit

Consolidated Statement of Equity - USD ($) shares in Thousands, $ in Thousands	Total	DCT Transaction [Member]	Preferred Stock [Member]	Preferred Stock [Member]DCT Transaction [Member]	Common Stock [Member]	Common Stock [Member]DCT Transaction [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]DCT Transaction [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]DCT Transaction [Member]	Distributions in Excess of Net Earnings [Member]	Distributions in Excess of Net Earnings [Member]DCT Transaction [Member]	Non-controlling Interests [Member]	Non-controlling Interests [Member]DCT Transaction [Member]
Balance at Dec. 31, 2015	$ 18,420,836		$ 78,235		$ 5,245		$ 19,302,367		$ (791,429)		$ (3,926,483)		$ 3,752,901
Balance, shares at Dec. 31, 2015					524,512
Consolidated net earnings	1,292,540		0		$ 0		0		0		1,209,932		82,608
Effect of equity compensation plans	117,697		0		$ 23		91,191		0		0		26,483
Effect of equity compensation plans, shares					2,282
Issuance of units related to acquisitions	3,162		0		$ 0		0		0		0		3,162
Issuance of units related to acquisitions, shares					0
Conversion of noncontrolling interests	0		0		$ 19		52,237		0		0		(52,256)
Conversion of noncontrolling interests, shares					1,877
Foreign currency translation gains (losses), net	(135,958)		0		$ 0		0		(144,730)		0		8,772
Unrealized gains (losses) on derivative contracts, net	(1,349)		0		0		0		(1,314)		0		(35)
Reallocation of equity	0		0		0		8,657		0		0		(8,657)
Distributions and other	(1,238,788)		0		0		587		0		(893,456)		(345,919)
Balance at Dec. 31, 2016	18,458,140		78,235		$ 5,287		19,455,039		(937,473)		(3,610,007)		3,467,059
Balance, shares at Dec. 31, 2016					528,671
Consolidated net earnings	1,760,959		0		$ 0		0		0		1,652,325		108,634
Effect of equity compensation plans	115,972		0		$ 20		74,506		0		0		41,446
Effect of equity compensation plans, shares					2,000
Capital contributions	254,214		0		$ 0		0		0		0		254,214
Repurchase of preferred stock	(13,182)		(9,287)		0		0		0		(3,895)		0
Purchase or redemption of noncontrolling interests	(813,847)		0		0		(202,040)		0		0		(611,807)
Conversion of noncontrolling interests	0		0		$ 15		47,711		0		0		(47,726)
Conversion of noncontrolling interests, shares					1,515
Foreign currency translation gains (losses), net	63,455		0		$ 0		0		13,810		0		49,645
Unrealized gains (losses) on derivative contracts, net	22,591		0		0		0		22,005		0		586
Reallocation of equity	0		0		0		(12,143)		0		0		12,143
Distributions and other	(1,142,561)		0		0		(66)		0		(942,884)		(199,611)
Balance at Dec. 31, 2017	$ 18,705,741		68,948		$ 5,322		19,363,007		(901,658)		(2,904,461)		3,074,583
Balance, shares at Dec. 31, 2017	532,186				532,186
Consolidated net earnings	$ 1,822,960		0		$ 0		0		0		1,649,361		173,599
Effect of equity compensation plans	85,775		0		$ 12		33,544		0		0		52,219
Effect of equity compensation plans, shares					1,251
Issuance of units related to acquisitions		$ 6,620,721		$ 0		$ 962		$ 6,321,667		$ 0		$ 0		$ 298,092
Issuance of units related to acquisitions, shares						96,179
Capital contributions	181,866		0		$ 0		0		0		0		181,866
Purchase or redemption of noncontrolling interests	(75,920)		0		0		(11,257)		0		0		(64,663)
Foreign currency translation gains (losses), net	(190,590)		0		0		0		(181,728)		0		(8,862)
Unrealized gains (losses) on derivative contracts, net	(1,323)		0		0		0		(1,285)		0		(38)
Reallocation of equity	0		0		0		(20,849)		0		0		20,849
Distributions and other	(1,348,342)		0		0		(125)		0		(1,123,367)		(224,850)
Balance at Dec. 31, 2018	$ 25,800,888		$ 68,948		$ 6,296		$ 25,685,987		$ (1,084,671)		$ (2,378,467)		$ 3,502,795
Balance, shares at Dec. 31, 2018	629,616				629,616

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities:
Consolidated net earnings	$ 1,822,960	$ 1,760,959	$ 1,292,540
Adjustments to reconcile net earnings to net cash provided by operating activities:
Straight-lined rents and amortization of above and below market leases	(66,938)	(81,021)	(93,608)
Equity-based compensation awards	76,093	76,640	60,341
Depreciation and amortization	947,214	879,140	930,985
Earnings from unconsolidated entities, net	(298,260)	(248,567)	(206,307)
Operating distributions from unconsolidated entities	349,877	307,220	286,651
Decrease (increase) in operating receivables from unconsolidated entities	(39,890)	(30,893)	14,823
Amortization of debt discounts (premiums), net and debt issuance costs	12,653	751	(15,137)
Gains on real estate transactions, net	(840,996)	(1,182,965)	(757,398)
Unrealized foreign currency and derivative losses (gains), net	(120,358)	68,956	(8,052)
Losses (gains) on early extinguishment of debt, net	2,586	68,379	(2,484)
Deferred income tax expense (benefit)	1,448	(5,005)	(5,525)
Decrease (increase) in accounts receivable and other assets	(72,955)	37,278	(106,337)
Increase in accounts payable and accrued expenses and other liabilities	30,125	36,374	26,513
Net cash provided by operating activities	1,803,559	1,687,246	1,417,005
Investing activities:
Real estate development	(1,953,144)	(1,606,133)	(1,641,560)
DCT Transaction, net of cash acquired	(45,870)	0	0
Real estate acquisitions	(999,131)	(442,696)	(458,516)
Tenant improvements and lease commissions on previously leased space	(134,868)	(153,255)	(165,933)
Property improvements	(93,073)	(110,635)	(101,677)
Proceeds from dispositions and contributions of real estate properties	2,310,388	3,236,603	2,826,408
Investments in and advances to unconsolidated entities	(160,358)	(249,735)	(265,951)
Acquisition of a controlling interest in unconsolidated entities, net of cash received	0	(374,605)	0
Return of investment from unconsolidated entities	360,278	209,151	776,550
Proceeds from repayment of notes receivable backed by real estate	34,260	32,100	202,950
Proceeds from the settlement of net investment hedges	29,425	7,541	79,767
Payments on the settlement of net investment hedges	(11,703)	(5,058)	0
Net cash provided by (used in) investing activities	(663,796)	543,278	1,252,038
Financing activities:
Proceeds from issuance of common stock	6,891	32,858	39,470
Dividends paid on common and preferred stock	(1,123,367)	(942,884)	(893,455)
Repurchase of preferred stock	0	(13,182)	0
Noncontrolling interests contributions	170,066	240,925	2,168
Noncontrolling interests distributions	(224,850)	(207,788)	(343,550)
Settlement of noncontrolling interests	(75,920)	(813,847)	(3,083)
Tax paid for shares withheld	(26,508)	(19,775)	(8,570)
Debt and equity issuance costs paid	(17,446)	(7,054)	(20,123)
Net proceeds from (payments on) credit facilities	(674,559)	283,255	33,435
Repurchase of and payments on debt	(4,166,088)	(3,578,889)	(2,301,647)
Proceeds from the issuance of debt	4,899,680	2,419,797	1,369,890
Net cash used in financing activities	(1,232,101)	(2,606,584)	(2,125,465)
Effect of foreign currency exchange rate changes on cash	(10,852)	15,790	(342)
Net increase (decrease) in cash and cash equivalents	(103,190)	(360,270)	543,236
Cash and cash equivalents, beginning of year	447,046	807,316	264,080
Cash and cash equivalents, end of year	343,856	447,046	807,316
Prologis, L.P. [Member]
Operating activities:
Consolidated net earnings	1,822,960	1,760,959	1,292,540
Adjustments to reconcile net earnings to net cash provided by operating activities:
Straight-lined rents and amortization of above and below market leases	(66,938)	(81,021)	(93,608)
Equity-based compensation awards	76,093	76,640	60,341
Depreciation and amortization	947,214	879,140	930,985
Earnings from unconsolidated entities, net	(298,260)	(248,567)	(206,307)
Operating distributions from unconsolidated entities	349,877	307,220	286,651
Decrease (increase) in operating receivables from unconsolidated entities	(39,890)	(30,893)	14,823
Amortization of debt discounts (premiums), net and debt issuance costs	12,653	751	(15,137)
Gains on real estate transactions, net	(840,996)	(1,182,965)	(757,398)
Unrealized foreign currency and derivative losses (gains), net	(120,358)	68,956	(8,052)
Losses (gains) on early extinguishment of debt, net	2,586	68,379	(2,484)
Deferred income tax expense (benefit)	1,448	(5,005)	(5,525)
Decrease (increase) in accounts receivable and other assets	(72,955)	37,278	(106,337)
Increase in accounts payable and accrued expenses and other liabilities	30,125	36,374	26,513
Net cash provided by operating activities	1,803,559	1,687,246	1,417,005
Investing activities:
Real estate development	(1,953,144)	(1,606,133)	(1,641,560)
DCT Transaction, net of cash acquired	(45,870)	0	0
Real estate acquisitions	(999,131)	(442,696)	(458,516)
Tenant improvements and lease commissions on previously leased space	(134,868)	(153,255)	(165,933)
Property improvements	(93,073)	(110,635)	(101,677)
Proceeds from dispositions and contributions of real estate properties	2,310,388	3,236,603	2,826,408
Investments in and advances to unconsolidated entities	(160,358)	(249,735)	(265,951)
Acquisition of a controlling interest in unconsolidated entities, net of cash received	0	(374,605)	0
Return of investment from unconsolidated entities	360,278	209,151	776,550
Proceeds from repayment of notes receivable backed by real estate	34,260	32,100	202,950
Proceeds from the settlement of net investment hedges	29,425	7,541	79,767
Payments on the settlement of net investment hedges	(11,703)	(5,058)	0
Net cash provided by (used in) investing activities	(663,796)	543,278	1,252,038
Financing activities:
Proceeds from issuance of common stock	6,891	32,858	39,470
Dividends paid on common and preferred stock	(1,168,133)	(980,105)	(931,559)
Repurchase of preferred stock	0	(13,182)	0
Noncontrolling interests contributions	170,066	240,925	2,168
Noncontrolling interests distributions	(180,084)	(170,567)	(306,297)
Settlement of noncontrolling interests	(22,728)	(790,016)	(2,232)
Redemption of common limited partnership units	(53,192)	(23,831)	0
Tax paid for shares of the Parent withheld	(26,508)	(19,775)	(8,570)
Debt and equity issuance costs paid	(17,446)	(7,054)	(20,123)
Net proceeds from (payments on) credit facilities	(674,559)	283,255	33,435
Repurchase of and payments on debt	(4,166,088)	(3,578,889)	(2,301,647)
Proceeds from the issuance of debt	4,899,680	2,419,797	1,369,890
Net cash used in financing activities	(1,232,101)	(2,606,584)	(2,125,465)
Effect of foreign currency exchange rate changes on cash	(10,852)	15,790	(342)
Net increase (decrease) in cash and cash equivalents	(103,190)	(360,270)	543,236
Cash and cash equivalents, beginning of year	447,046	807,316	264,080
Cash and cash equivalents, end of year	$ 343,856	$ 447,046	$ 807,316

Consolidated Statements of Capi

Consolidated Statements of Capital - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated net earnings	$ 690,490	$ 391,959	$ 338,873	$ 220,689	$ 1,822,960	$ 1,760,959	$ 1,292,540
Effect of equity compensation plans					85,775	115,972	117,697
Capital contributions					181,866	254,214
Repurchase of preferred units						(13,182)
Purchase or redemption of noncontrolling interests					(75,920)	(813,847)
Unrealized gains (losses) on derivative contracts, net					(1,323)	22,591	(1,349)
Non-controlling Interests [Member]
Consolidated net earnings					173,599	108,634	82,608
Effect of equity compensation plans					52,219	41,446	26,483
Capital contributions					181,866	254,214
Repurchase of preferred units						0
Purchase or redemption of noncontrolling interests					(64,663)	(611,807)
Unrealized gains (losses) on derivative contracts, net					$ (38)	$ 586	(35)
Limited Partners [Member]
Consolidated net earnings	$ 690,490	$ 391,959	$ 338,873	220,689
Class A Common [Member]
Beginning balance, Units		8,900			8,900
Conversion of limited partners units, shares					8,400	8,500
Ending balance, Units	8,800		8,900		8,800	8,900
Prologis, L.P. [Member]
Beginning balance		$ 18,705,741		18,458,140	$ 18,705,741	$ 18,458,140	18,420,836
Consolidated net earnings					1,822,960	1,760,959	1,292,540
Effect of equity compensation plans					85,775	115,972	117,697
Issuance of units related to acquisitions							3,162
Capital contributions					181,866	254,214
Repurchase of preferred units						(13,182)
Purchase or redemption of noncontrolling interests					(22,728)	(790,016)
Redemption of limited partnership units					(53,192)	(23,831)
Foreign currency translation gains (losses), net					(190,590)	63,455	(135,958)
Unrealized gains (losses) on derivative contracts, net					(1,323)	22,591	(1,349)
Distributions and other					(1,348,342)	(1,142,561)	(1,238,788)
Ending balance	$ 25,800,888		$ 18,705,741		25,800,888	18,705,741	18,458,140
Prologis, L.P. [Member] | DCT Transaction [Member]
Issuance of units related to acquisitions					6,620,721
Prologis, L.P. [Member] | Non-controlling Interests [Member]
Beginning balance		2,660,242		3,072,469	2,660,242	3,072,469	3,320,227
Consolidated net earnings					124,712	63,620	48,307
Capital contributions					181,866	254,214
Purchase or redemption of noncontrolling interests					(11,471)	(587,976)
Conversion of limited partners units						(28,973)
Foreign currency translation gains (losses), net					(3,416)	49,278	12,601
Distributions and other					(180,084)	(162,390)	(308,666)
Ending balance	2,836,469		2,660,242		2,836,469	2,660,242	3,072,469
Prologis, L.P. [Member] | Non-controlling Interests [Member] | DCT Transaction [Member]
Issuance of units related to acquisitions					64,620
Prologis, L.P. [Member] | Preferred [Member] | General Partner
Beginning balance		$ 68,948		$ 78,235	$ 68,948	$ 78,235	$ 78,235
Beginning balance, Units		1,379		1,565	1,379	1,565	1,565
Repurchase of preferred units						$ (9,287)
Redemption of preferred units, units						(186)
Ending balance	$ 68,948		$ 68,948		$ 68,948	$ 68,948	$ 78,235
Ending balance, Units	1,379		1,379		1,379	1,379	1,565
Prologis, L.P. [Member] | Common [Member] | General Partner
Beginning balance		$ 15,562,210		$ 14,912,846	$ 15,562,210	$ 14,912,846	$ 14,589,700
Beginning balance, Units		532,186		528,671	532,186	528,671	524,512
Consolidated net earnings					$ 1,649,361	$ 1,652,325	$ 1,209,932
Effect of equity compensation plans					$ 33,556	$ 74,526	$ 91,214
Effect of equity compensation plans, shares					1,251	2,000	2,282
Repurchase of preferred units						$ (3,895)
Purchase or redemption of noncontrolling interests					$ (11,257)	(202,040)
Conversion of limited partners units						$ 47,726	$ 52,256
Conversion of limited partners units, shares						1,515	1,877
Foreign currency translation gains (losses), net					(181,728)	$ 13,810	$ (144,730)
Unrealized gains (losses) on derivative contracts, net					(1,285)	22,005	(1,314)
Reallocation of capital					(20,849)	(12,143)	8,657
Distributions and other					(1,123,492)	(942,950)	(892,869)
Ending balance	$ 22,229,145		$ 15,562,210		$ 22,229,145	$ 15,562,210	$ 14,912,846
Ending balance, Units	629,616		532,186		629,616	532,186	528,671
Prologis, L.P. [Member] | Common [Member] | General Partner | DCT Transaction [Member]
Issuance of units related to acquisitions					$ 6,322,629
Issuance of units related to acquisition, shares					96,179
Prologis, L.P. [Member] | Common [Member] | Limited Partners [Member]
Beginning balance		$ 165,401		$ 150,173	$ 165,401	$ 150,173	$ 186,683
Beginning balance, Units		5,656		5,323	5,656	5,323	6,711
Consolidated net earnings					$ 24,422	$ 18,372	$ 14,232
Effect of equity compensation plans					$ 52,219	$ 41,446	$ 26,483
Effect of equity compensation plans, shares					2,087	1,386	440
Issuance of units related to acquisitions							$ 3,162
Issuance of units related to acquisition, shares							71
Redemption of limited partnership units					$ (50,390)	$ (23,831)
Redemption of limited partnership units, Unit					(778)	(369)
Conversion of limited partners units						$ (18,753)	$ (52,256)
Conversion of limited partners units, shares						(684)	(1,877)
Foreign currency translation gains (losses), net					$ (3,035)	$ 146	$ (1,457)
Unrealized gains (losses) on derivative contracts, net					(21)	234	(13)
Reallocation of capital					(28,969)	11,829	(12,414)
Distributions and other					(21,818)	(14,215)	$ (14,247)
Distributions and other							(22)
Ending balance	$ 371,281		$ 165,401		$ 371,281	$ 165,401	$ 150,173
Ending balance, Units	10,516		5,656		10,516	5,656	5,323
Prologis, L.P. [Member] | Common [Member] | Limited Partners [Member] | DCT Transaction [Member]
Issuance of units related to acquisitions					$ 233,472
Issuance of units related to acquisition, shares					3,551
Prologis, L.P. [Member] | Class A Common [Member] | Limited Partners [Member]
Beginning balance		$ 248,940		$ 244,417	$ 248,940	$ 244,417	$ 245,991
Beginning balance, Units		8,894		8,894	8,894	8,894	8,894
Consolidated net earnings					$ 24,465	$ 26,642	$ 20,069
Redemption of limited partnership units					$ (2,802)
Redemption of limited partnership units, Unit					(45)
Foreign currency translation gains (losses), net					$ (2,411)	221	(2,372)
Unrealized gains (losses) on derivative contracts, net					(17)	352	(22)
Reallocation of capital					49,818	314	3,757
Distributions and other					(22,948)	(23,006)	(23,006)
Ending balance	$ 295,045		$ 248,940		$ 295,045	$ 248,940	$ 244,417
Ending balance, Units	8,849		8,894		8,849	8,894	8,894

Description of the Business

Description of the Business	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Description of the Business	Prologis, Inc. (or the “Parent”) commenced operations as a fully integrated real estate company in 1997, elected to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), and believes the current organization and method of operation will enable it to maintain its status as a REIT. The Parent is the general partner of Prologis, L.P. (or the “Operating Partnership” or “OP”). Through the OP, we are engaged in the ownership, acquisition, development and management of logistics facilities with a focus on key markets in 19 countries on four continents. We invest in real estate through wholly owned subsidiaries and other entities through which we co-invest with partners and investors. We maintain a significant level of ownership in these co-investment ventures, which may be consolidated or unconsolidated based on our level of control of the entity. Our current business strategy consists of two operating business segments: Real Estate Operations and Strategic Capital. Our Real Estate Operations segment represents the ownership and development of logistics properties. Our Strategic Capital segment represents the management of unconsolidated co-investment ventures and other unconsolidated entities. See Note 17 for further discussion of our business segments. Unless otherwise indicated, the Notes to the Consolidated Financial Statements apply to both the Parent and the OP. The terms “the Company,” “Prologis,” “we,” “our” or “us” means the Parent and OP collectively. For each share of preferred or common stock the Parent issues, the OP issues a corresponding preferred or common partnership unit, as applicable, to the Parent in exchange for the contribution of the proceeds from the stock issuance. At December 31, 2018, the Parent owned a 97.09% common general partnership interest in the OP and 100% of the preferred units in the OP. The remaining 2.91% common limited partnership interests, which include 8.8 million Class A common limited partnership units (“Class A Units”) in the OP, are owned by unaffiliated investors and certain current and former directors and officers of the Parent. Each partner’s percentage interest in the OP is determined based on the number of OP units held, including the number of OP units into which Class A Units are convertible, compared to total OP units outstanding at each period end and is used as the basis for the allocation of net income or loss to each partner. At the end of each reporting period, a capital adjustment is made in the OP to reflect the appropriate ownership interest for each of the common unitholders. These adjustments are reflected in the line items Reallocation of Equity Reallocation of Capital As the sole general partner of the OP, the Parent has complete responsibility and discretion in the day-to-day management and control of the OP and we operate the Parent and the OP as one enterprise. The management of the Parent consists of the same members as the management of the OP. These members are officers of the Parent and employees of the OP or one of its subsidiaries. As general partner with control of the OP, the Parent is the primary beneficiary and therefore consolidates the OP. Because the Parent’s only significant asset is its investment in the OP, the assets and liabilities of the Parent and the OP are the same on their respective financial statements. Information with respect to the square footage, number of buildings and acres of land is unaudited.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation. The accompanying Consolidated Financial Statements are prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) and are presented in our reporting currency, the U.S. dollar. All material intercompany transactions with consolidated entities have been eliminated. Consolidation. We consolidate all entities that are wholly owned and those in which we own less than 100% of the equity but control, as well as any variable interest entities (“VIEs”) in which we are the primary beneficiary. We evaluate our ability to control an entity and whether the entity is a VIE and we are the primary beneficiary through consideration of substantive terms of the arrangement to identify which enterprise has the power to direct the activities of the entity that most significantly impacts the entity’s economic performance and the obligation to absorb losses and the right to receive benefits from the entity. For entities that are not defined as VIEs, we first consider whether we are the general partner or the limited partner (or the equivalent in such investments that are not structured as partnerships). We consolidate entities in which we are the general partner and the limited partners in such entities that do not have rights that would preclude control. For entities in which we are the general partner but do not control the entity as the other partners hold substantive participating or kick-out rights, we apply the equity method of accounting since, as the general partner, we have the ability to exercise significant influence over the operating and financial policies of the venture. For ventures for which we are a limited partner or our investment is in an entity that is not structured similar to a partnership, we consider factors such as ownership interest, voting control, authority to make decisions and contractual and substantive participating rights of the partners. In instances where the factors indicate that we have a controlling financial interest in the venture, we consolidate the entity. Reclassifications. Certain amounts included in the Consolidated Financial Statements for 2016 have been reclassified to conform to the 2018 financial statement presentation. Use of Estimates. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the reporting period. Although we believe the assumptions and estimates we made are reasonable and appropriate, as discussed in the applicable sections throughout the Consolidated Financial Statements, different assumptions and estimates could materially impact our reported results. Foreign Operations. The U.S. dollar is the functional currency for our consolidated subsidiaries and unconsolidated entities operating in the U.S. and Mexico and certain of our consolidated subsidiaries that operate as holding companies for foreign investments. The functional currency for our consolidated subsidiaries and unconsolidated entities operating in other countries is the principal currency in which the entity’s assets, liabilities, income and expenses are denominated, which may be different from the local currency of the country of incorporation or where the entity conducts its operations. The functional currencies of entities outside of the U.S. and Mexico generally include the Brazilian real, British pound sterling, Canadian dollar, Chinese yuan, euro, Japanese yen and Singapore dollar. We take part in business transactions denominated in these and other local currencies where we operate. For our consolidated subsidiaries whose functional currency is not the U.S. dollar, we translate their financial statements into the U.S. dollar at the time we consolidate those subsidiaries’ financial statements. Generally, assets and liabilities are translated at the exchange rate in effect at the balance sheet date. The resulting translation adjustments are included in Accumulated Other Comprehensive Income (Loss) AOCI/L We and certain of our consolidated subsidiaries have intercompany and third-party debt that is not denominated in the entity’s functional currency. When the debt is remeasured against the functional currency of the entity, a gain or loss can result. The resulting adjustment is reflected in Foreign Currency and Derivative Gains (Losses), Net AOCI/L Acquisitions. We apply a screen test to evaluate if substantially all the fair value of the acquired property is concentrated in a single identifiable asset or group of similar identifiable assets to determine whether a transaction is accounted for as an asset acquisition or business combination. As most of our real estate acquisitions are concentrated in either a single or a group of similar identifiable assets, our real estate transactions are generally accounted for as asset acquisitions, which permits the capitalization of transaction costs to the basis of the acquired property. The transaction costs related to the formation of equity method investments are also capitalized. For acquisitions prior to January 1, 2017 and those subsequently accounted for as a business combination, transaction costs were expensed as incurred. For asset acquisitions, the purchase price is allocated to the various components acquired, including an allocation to the individual buildings, land and lease intangibles on a relative fair value basis. Other monetary assets acquired and liabilities assumed, including debt, are recorded at fair value. Purchase price allocations for a business combination are recorded at fair value. When we obtain control of an unconsolidated entity and the acquisition qualifies as a business combination, we account for the acquisition in accordance with the guidance for a business combination achieved in stages. We remeasure our previously held interest in the unconsolidated entity at its acquisition-date fair value and recognize any resulting gain or loss in earnings. We allocate the purchase price using primarily Level 2 and Level 3 inputs (further defined in Fair Value Measurements below) as follows: Investments in Real Estate Properties. We value operating properties as if vacant. We estimate fair value by applying an income approach methodology using either a discounted cash flow analysis or applying a capitalization rate to the estimated NOI of a property. Key assumptions include market rents, growth rates, and discount and capitalization rates. Estimates of future cash flows are based on a number of factors including historical operating results, known trends and market and economic conditions. We determine the discount or capitalization rate by market based on recent transactions and other market data. The fair value of land is generally based on relevant market data, such as a comparison of the subject site to similar parcels that have recently been sold or are currently being offered on the market for sale. Lease Intangibles . We determine the portion of the purchase price related to intangible assets and liabilities as follows: • Above and Below Market Leases . We recognize an asset or liability for acquired in-place leases with favorable or unfavorable rents based on our estimate of current market rents of the applicable markets. The value is recorded in either or , as appropriate, and is amortized over the term of the respective leases, including any bargain renewal options, to rental revenues. • Foregone Rent . We calculate the value of the revenue and recovery of costs foregone during a reasonable lease-up period, as if the space was vacant, in each of the applicable markets. The values are recorded in and amortized over the remaining life of the respective leases to amortization expense. • Leasing Commissions. We recognize an asset for leasing commissions upon the acquisition of in-place leases based on our estimate of the cost to lease space in the applicable markets. The value is recorded in and amortized over the remaining life of the respective leases to amortization expense. Debt . We estimate the fair value of debt based on contractual future cash flows discounted using borrowing spreads and market interest rates that would be available to us for the issuance of debt with similar terms and remaining maturities. In the case of publicly traded debt, we estimate the fair value based on available market data. Any discount or premium to the principal amount is included in the carrying value and amortized to interest expense over the remaining term of the related debt using the effective interest method. Noncontrolling Interests . We estimate the portion of the fair value of the net assets owned by third parties based on the fair value of the consolidated net assets, principally real estate properties and debt. Working Capital . We estimate the fair value of other acquired assets and assumed liabilities on the best information available. Fair Value Measurements. The objective of fair value is to determine the price that would be received on the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). We estimate fair value using available market information and valuation methodologies we believe to be appropriate for these purposes. Considerable judgment and a high degree of subjectivity are involved in developing these estimates and, accordingly, they are not necessarily indicative of amounts that we would realize on disposition. The fair value hierarchy consists of three broad levels: • Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date. • Level 2 — Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. • Level 3 — Unobservable inputs for the asset or liability. Fair Value Measurements on a Recurring Basis. We estimate the fair value of our financial instruments using available market information and valuation methodologies we believe to be appropriate for these purposes. We determine the fair value of our derivative financial instruments using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, foreign exchange rates and implied volatilities. We determine the fair values of our interest rate swaps using the market standard methodology of netting the discounted future fixed cash receipts or payments and the discounted expected variable cash payments. We base the variable cash payments on an expectation of future interest rates, or forward curves, derived from observable market interest rate curves. We base the fair values of our net investment hedges on the change in the spot rate at the end of the period as compared with the strike price at inception. We incorporate credit valuation adjustments to appropriately reflect nonperformance risk for us and the respective counterparty in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. We have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy. Although the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties, we assess the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. Fair Value Measurements on a Nonrecurring Basis. Assets measured at fair value on a nonrecurring basis generally consist of real estate assets and investments in unconsolidated entities that were subject to impairment charges related to our change of intent to sell the investments and through our recoverability analysis discussed below. We estimate fair value based on expected sales prices in the market (Level 2) or by applying the income approach methodology using a discounted cash flow analysis (Level 3). Fair Value of Financial Instruments. We estimate the fair value of our senior notes for disclosure purposes based on quoted market prices for the same (Level 1) or similar (Level 2) issues when current quoted market prices are available. We estimate the fair value of our credit facilities, term loans, secured mortgage debt and assessment bonds by discounting the future cash flows using rates and borrowing spreads currently available to us (Level 3). Real Estate Assets. Real estate assets are carried at depreciated cost. We capitalize costs incurred in developing, renovating, rehabilitating and improving real estate assets as part of the investment basis. We expense costs for repairs and maintenance as incurred. Depreciation and Amortization. We charge the depreciable portions of real estate assets to depreciation expense on a straight-line basis over the respective estimated useful lives. Depreciation on development buildings commences when the asset is ready for its intended use, which we define as the earlier of stabilization (90% occupied) or one year after completion of construction. We generally use the following useful lives: 5 to 7 years for capital improvements, 10 years for standard tenant improvements, 25 years for depreciable land improvements, 30 years for operating properties acquired and 40 years Capitalization of Costs. During the land development and construction periods of qualifying projects, we capitalize interest costs, insurance, real estate taxes and general and administrative costs of the personnel performing the development, renovation and rehabilitation; if such costs are incremental and identifiable to a specific activity to ready the asset for its intended use. We capitalize transaction costs related to the acquisition of land for future development and operating properties that qualify as asset acquisitions. We capitalize costs incurred to successfully originate a lease that result directly from and are essential to acquire that lease, including internal costs that are incremental and identifiable as leasing activities. Leasing costs that meet the requirements for capitalization are presented as a component of and all other capitalized costs are included in the investment basis of the real estate assets. Beginning January 1, 2019, we will no longer capitalize internal leasing costs. Recoverability of Real Estate Assets. We assess the carrying values of our respective real estate assets, whenever events or changes in circumstances indicate that the carrying amounts of these assets may not be fully recoverable. We measure the recoverability of the asset by comparing the carrying amount of the asset to the estimated future undiscounted cash flows. If our analysis indicates that the carrying value of the real estate property is not recoverable on an undiscounted cash flow basis, we recognize an impairment charge for the amount by which the carrying value exceeds the current estimated fair value of the real estate property. We estimate the future undiscounted cash flows and fair value based on our intent as follows: • for real estate properties that we intend to hold long-term; including land held for development, properties currently under development and operating properties; recoverability is assessed based on the estimated undiscounted future net rental income from operating the property and the terminal value, including anticipated costs to develop; • for real estate properties we intend to sell, including properties currently under development and operating properties; recoverability is assessed based on proceeds from disposition that are estimated based on future net rental income of the property, expected market capitalization rates and anticipated costs to develop; • for land parcels we intend to sell, recoverability is assessed based on estimated proceeds from disposition; and • for costs incurred related to the potential acquisition of land, operating properties or development of a real estate property, recoverability is assessed based on the probability that the acquisition or development is likely to occur at the measurement date. Assets Held for Sale or Contribution. We classify a property as held for sale or contribution when certain criteria are met in accordance with GAAP. Assets classified as held for sale are expected to be sold to a third party and assets classified as held for contribution are newly developed assets we intend to contribute to an unconsolidated co-investment venture or to a third party within twelve months. At such time, the respective assets and liabilities are presented separately in the Consolidated Balance Sheets and depreciation is no longer recognized. Assets held for sale or contribution are reported at the lower of their carrying amount or their estimated fair value less the costs to sell. Investments in Unconsolidated Entities. We present our investments in certain entities under the equity method. We use the equity method when we have the ability to exercise significant influence over operating and financial policies of the venture but do not have control of the entity. Under the equity method, we initially recognize these investments (including advances) in the balance sheet at our cost, including formation costs and net of deferred gains from the contribution of properties, if applicable. We subsequently adjust the accounts to reflect our proportionate share of net earnings or losses recognized and accumulated other comprehensive income or loss, distributions received, contributions made and certain other adjustments, as appropriate. When circumstances indicate there may have been a reduction in the value of an equity investment, we evaluate whether the loss in value is other than temporary. If we conclude it is other than temporary, we recognize an impairment charge to reflect the equity investment at fair value. With regard to distributions from unconsolidated entities, we have elected the nature of distribution approach as the information is available to us to determine the nature of the underlying activity that generated the distributions. In accordance with the nature of distribution approach, cash flows generated from the operations of an unconsolidated entity are classified as a return on investment (cash inflow from operating activities) and cash flows that are generated from property sales, debt refinancing or sales of our investments are classified as a return of investment (cash inflow from investing activities). Cash and Cash Equivalents. We consider all cash on hand, demand deposits with financial institutions and short-term highly liquid investments with original maturities of three months or less to be cash equivalents. Our cash and cash equivalents are financial instruments that are exposed to concentrations of credit risk. We invest our cash with high-credit quality institutions. Cash balances may be invested in money market accounts that are not insured. We have not realized any losses in such cash investments or accounts and believe that we are not exposed to any significant credit risk. Derivative Financial Instruments. We primarily hedge our foreign currency risk by borrowing in the currencies in which we invest. Generally, we borrow in the functional currency of our consolidated subsidiaries. We may use derivative financial instruments, such as foreign currency forward and option contracts to manage foreign currency exchange rate risk related to both our foreign investments and the related earnings. In addition, we occasionally use interest rate swap and forward contracts to manage interest rate risk and limit the impact of future interest rate changes on earnings and cash flows, primarily with variable-rate debt. We do not use derivative financial instruments for trading or speculative purposes. Each derivative transaction is customized and not exchange-traded. We recognize all derivatives at fair value within the line items Other Assets Other Liabilities Designated Derivatives. We may choose to designate our derivative financial instruments, generally foreign currency forwards as net investment hedges in foreign operations or interest rate swaps or foreign currency forwards as cash flow hedges. At inception of the transaction, we formally designate and document the derivative financial instrument as a hedge of a specific underlying exposure, the risk management objective and the strategy for undertaking the hedge transaction. We formally assess both at inception and at least quarterly thereafter, the effectiveness of our hedging transactions. Due to the high degree of effectiveness between the hedging instruments and the underlying exposures hedged, fluctuations in the value of the derivative financial instruments will generally be offset by changes in the cash flows or fair values of the underlying exposures being hedged. Changes in the fair value of derivatives that are designated and qualify as net investment hedges in foreign operations and cash flow hedges are recorded in AOCI/L AOCI/L Foreign Currency and Derivative Gains (Losses), Net AOCI/ Interest Expense Interest Expense AOCI/L Interest Expense In addition to the net investment hedges described above, we may issue debt in a currency that is not the same functional currency of the borrowing entity to hedge our international investments. We designate the debt and related accrued interest as a nonderivative net investment hedge to offset the translation and economic exposures related to our international investments. If the debt and related accrued interest exceeds the designated amount of our international investment, the foreign currency remeasurement on the unhedged portion of the debt during the period is recognized in Foreign Currency and Derivative Gains (Losses), Net. Undesignated Derivatives. We also use derivatives, such as foreign currency forwards and option contracts, that are not designated as hedges to manage foreign currency exchange rate risk related to our results of operations. The changes in fair values of these derivatives that were not designated or did not qualify as hedging instruments are immediately recognized in earnings within the line item in the Consolidated Statements of Income. These gains or losses are generally offset by lower or higher earnings as a result in exchange rates that were different than our expectations. In addition, we may choose to not designate our interest rate swap and forward contracts. If a swap or forward contract is not designated as a hedge, the changes in fair value of these instruments is immediately recognized in earnings within the line item Interest Expense . Noncontrolling Interests. Noncontrolling interests represent the share of consolidated entities owned by third parties. We recognize each noncontrolling holder’s respective share of the estimated fair value of the net assets at the date of formation or acquisition. Noncontrolling interests are subsequently adjusted for the noncontrolling holder’s share of additional contributions, distributions and their share of the net earnings or losses of each respective consolidated entity. We allocate net income to noncontrolling interests based on the weighted average ownership interest during the period. The net income that is not attributable to us is reflected in the line item Net Earnings Attributable to Noncontrolling Interests . We do not recognize a gain or loss on transactions with a consolidated entity in which we do not own 100% of the equity, but we reflect the difference in cash received or paid from the noncontrolling interests carrying amount as additional paid-in-capital Certain limited partnership interests, including OP units, are exchangeable into our common stock. Common stock issued upon exchange of a holder’s noncontrolling interest is accounted for at the carrying value of the surrendered limited partnership interest and the difference between the carrying value and the fair value of the common stock issued is recorded to additional paid-in-capital. Revenue Recognition. Rental Revenues and Recoveries. We lease our operating properties to customers under agreements that are classified as operating leases. We recognize the total minimum lease payments provided for under the leases on a straight-line basis over the lease term. Generally, under the terms of our leases, the majority of our rental expenses are recovered from our customers. We reflect amounts recovered from customers as revenues in the period that the applicable expenses are incurred. We make a provision for possible loss if the collection of a receivable balance is considered doubtful. Strategic Capital Revenues. Strategic capital revenues include revenues we earn from the management services we provide to unconsolidated entities. These fees are determined in accordance with the terms specific to each arrangement and may include recurring fees such as property and asset management fees or transactional fees for leasing, acquisition, development, construction, financing, legal and tax services provided. We recognize these fees as we provide the services or on a cost basis for development fees. We may also earn incentive returns (“promotes” or “promote revenues”) based on a venture’s cumulative returns over a certain time-period and the returns are determined by both the operating performance and real estate valuation of the venture, including highly variable inputs such as capitalization rates, market rents, interest rates and foreign currency exchange rates. As these key inputs are highly volatile and out of our control, and such volatility can materially impact our promotes period over period, we recognize promote revenues at or near the end of the performance period. We include the third-party investors’ share of promotes in Strategic Capital Revenues. We also earn fees from ventures that we consolidate. Upon consolidation, these fees are eliminated from our earnings and the third-party share of these fees are recognized as a reduction of Net Earnings Attributable to Noncontrolling Interests. Development Management and Other Revenues. Development management and other revenues principally include development and construction management fees recognized as we provide the services or on a cost basis. Gains on Real Estate Transactions, Net. We recognize gains on the disposition of real estate when the recognition criteria have been met, generally at the time the risks and rewards and title have transferred and we no longer have substantial continuing involvement with the real estate sold. We recognize losses from the disposition of real estate when known. We recognize gains or losses on the remeasurement of equity investments to fair value upon acquisition of a controlling interest in any of our previously unconsolidated entities and the transaction is considered the acquisition of a business. Adoption of the new revenue recognition guidance on January 1, 2018 did not impact our recognition of sales to third parties. Beginning January 1, 2018, we recognize the entire gain attributed to contributions of real estate properties to unconsolidated entities. We previously recognized a gain on contribution only to the extent of the third-party ownership in the unconsolidated entity acquiring the property and deferred the portion of the gain related to our ownership through a reduction to our investment in the applicable unconsolidated entity. We adjusted our proportionate share of net earnings or losses recognized in future periods to reflect the entities’ recorded depreciation expense as if it were computed on our lower basis in the contributed properties rather than on the entity’s basis. Rental Expenses. Rental expenses principally include the cost of our property management personnel, utilities, repairs and maintenance, property insurance, real estate taxes and the other costs of managing the properties. Strategic Capital Expenses. Strategic capital expenses generally include the direct expenses associated with the asset management of the unconsolidated co-investment ventures provided by our employees who are assigned to our Strategic Capital segment and the costs of our Prologis Promote Plan based on earned promotes. In addition, in order to achieve efficiencies and economies of scale, all of our property management functions are provided by property management personnel who are assigned to our Real Estate Operations segment. These individuals perform the property-level management of the properties in our owned and managed portfolio, which include properties we consolidate and those we manage that are owned by the unconsolidated co-investment ventures. We allocate the costs of our property management to the properties we consolidate (included in Rental Expenses ) and the properties owned by the unconsolidated co-investment ventures (included in Strategic Capital Expenses ) by using the square feet owned by the respective portfolios. Equity-Based Compensation. We account for equity-based compensation by measuring the cost of employee services received in exchange for an award of an equity instrument based on the fair value of the award on the grant date. We recognize the cost of the award on a straight-line basis over the period during which an employee is required to provide service in exchange for the award, generally the vesting period. Income Taxes. Under the Internal Revenue Code, REITs are generally not required to pay federal income taxes if they distribute 100% of their taxable income and meet certain income, asset and stockholder tests. If we fail to qualify as a REIT in any taxable year, we will be subject to federal income taxes at regular corporate rates (including any alternative minimum tax) and may not be able to qualify as a REIT for the four subsequent taxable years. Even as a REIT, we may be subject to certain foreign, state and local taxes on our own income and property, and to federal income and excise taxes on our undistributed taxable income. We have elected taxable REIT subsidiary (“TRS”) status for some of our consolidated subsidiaries. This allows us to provide services that would otherwise be considered impermissible for REITs. Many of the foreign countries in which we have operations do not recognize REITs or do not accord REIT status under their respective tax laws to our entities that operate in their jurisdiction. In the U.S., we are taxed in certain states in which we operate. Accordingly, we recognize income tax expense for the federal and state income taxes incurred by our TRSs, taxes incurred in certain states and foreign jurisdictions, and interest and penalties associated with our unrecognized tax benefit liabilities. We evaluate tax positions taken in the Consolidated Financial Statements under the interpretation for accounting for uncertainty in income taxes. As a result of this evaluation, we may recognize a tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by taxing authorities. We recognize deferred income taxes in certain taxable entities. For federal income tax purposes, certain acquisitions have been treated as tax-free transactions resulting in a carry-over basis in assets and liabilities. For financial reporting purposes and in accordance with purchase accounting, we record all of the acquired assets and assumed liabilities at the estimated fair value at the date of acquisition, as discussed above. For our taxable subsidiaries, including certain international jurisdictions, we recognize the deferred income tax liabilities that represent the tax effect of the difference between the tax basis carried over and the fair value of the tangible and intangible assets at the date of acquisition. Any subsequent increases or decreases to the deferred income tax liability recorded in connection with these acquisitions, are reflected in earnings. If taxable income is generated in these subsidiaries, we recognize a benefit in earnings as a result of the r

DCT Transaction

DCT Transaction	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
DCT Transaction	NOTE 3. DCT TRANSACTION On August 22, 2018, DCT Industrial Trust Inc. (“DCT Inc.”) merged with and into Prologis, Inc., with Prologis, Inc. surviving the merger (the “Company Merger”) and immediately prior to the effective time of the Company Merger, DCT Industrial Operating Partnership LP (“DCT OP”) merged with and into Prologis, L.P., with Prologis, L.P. surviving the merger (the “Partnership Merger” and, together with the Company Merger, the “DCT Transaction”). The term “DCT” means DCT Inc. and DCT OP collectively. The DCT Transaction was completed for $8.5 billion through the issuance of equity based on the closing price of Prologis’ common stock on August 21, 2018 and the assumption of debt. In connection with the transaction, each issued and outstanding share or unit held by a DCT stockholder or unitholder was converted automatically into 1.02 shares of Prologis common stock or common units of Prologis, L.P., respectively, including shares and units under DCT’s equity incentive plan that became fully vested at closing. Through the DCT Transaction, we acquired a portfolio of logistics real estate assets that consisted of 408 operating properties, aggregating 68.0 million square feet, 10 properties under development, aggregating 2.8 million square feet and 305 acres of land parcels with build-out potential of 4.5 million square feet. The aggregate equity consideration of approximately $6.6 billion is calculated below (in millions, except price per share): Number of Prologis shares and units issued upon conversion of DCT shares and units at August 21, 2018 99.73 Multiplied by price of Prologis' common stock on August 21, 2018 $ 65.75 Fair value of Prologis shares and units issued $ 6,557 We accounted for the DCT Transaction as an asset acquisition and as a result the transaction costs of $50.0 million were capitalized to the basis of the acquired properties. Transaction costs include investment banker advisory fees, legal fees and other costs. Under acquisition accounting, the total purchase price was allocated to the DCT net tangible and identifiable intangible assets acquired and liabilities assumed based on their relative fair values as follows (in millions): Net investments in real estate $ 8,362 Intangible assets, net of intangible liabilities 292 Cash and other assets 24 Debt (1,863 ) Accounts payable, accrued expenses and other liabilities (143 ) Noncontrolling interests (65 ) Total purchase price, including transaction costs $ 6,607

Real Estate

Real Estate	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Real Estate	Investments in real estate properties consisted of the following at December 31 (dollars and square feet in thousands): Square Feet Number of Buildings 2018 (1) 2017 2018 (1) 2017 2018 (1) 2017 Operating properties: Buildings and improvements 354,762 294,811 1,858 1,525 $ 22,587,267 $ 16,849,349 Improved land 8,044,888 5,735,978 Development portfolio, including land costs: Prestabilized 8,709 7,345 30 22 828,064 546,173 Properties under development 27,715 22,216 70 63 1,314,737 1,047,316 Land (2) 1,192,220 1,154,383 Other real estate investments (3) 619,811 505,445 Total investments in real estate properties 34,586,987 25,838,644 Less accumulated depreciation 4,656,680 4,059,348 Net investments in real estate properties $ 29,930,307 $ 21,779,296 (1) The portfolio acquired in the DCT Transaction, excluding 49 operating properties classified as Assets Held for Sale or Contribution, (2) At December 31, 2018 and 2017, our land is comprised of 4,929 and 5,191 acres, respectively. (3) Included in other real estate investments were: (i) land parcels that are ground leased to third parties; (ii) non-logistics real estate; (iii) our corporate headquarters; (iv) costs related to future development projects, including purchase options on land; (v) earnest money deposits associated with potential acquisitions; and (vi) infrastructure costs related to projects we are developing on behalf of others. At December 31, 2018, we owned real estate assets in the U.S. and other Americas (Brazil, Canada and Mexico), Europe (Belgium, the Czech Republic, France, Germany, Hungary, Italy, the Netherlands, Poland, Slovakia, Spain, Sweden and the United Kingdom (“U.K.”)) and Asia (China, Japan and Singapore). Acquisitions The following table summarizes our real estate acquisition activity, excluding the DCT Transaction (as discussed in Note 3), for the years ended December 31 (dollars and square feet in thousands): 2018 2017 2016 Number of operating properties 20 16 9 Square feet 4,757 6,859 1,823 Acquisition value of net investments in real estate properties (1) (2) $ 1,008,718 $ 1,139,410 $ 411,706 (1) Value includes the acquisition of 1,210, 1,392 and 776 acres of land in 2018, 2017 and 2016, respectively. (2) In August 2017, we acquired our partner’s interest in certain joint ventures in Brazil for an aggregate price of R$1.2 billion ($381.7 million). As a result of this transaction, we began consolidating real estate properties that included twelve operating properties, two prestabilized properties and 531 acres of undeveloped land. We accounted for the transaction as a step-acquisition under the business combination rules and recognized a gain. The results of operations for these real estate properties were not significant in 2017. In January 2019, we contributed the majority of these real estate assets into a newly formed joint venture. Dispositions The following table summarizes our gains on real estate transactions, net for the years ended December 31 (dollars and square feet in thousands): 2018 2017 2016 Contributions to unconsolidated entities (1) Number of properties 40 222 35 Square feet 13,115 48,171 11,624 Net proceeds (2) $ 1,511,429 $ 3,201,986 $ 1,231,878 Gains on contributions, net (2) (3) $ 459,107 $ 847,034 $ 267,441 Dispositions to third parties Number of properties 78 110 172 Square feet 15,447 17,147 20,360 Net proceeds (2) (4) $ 1,248,487 $ 1,281,501 $ 1,760,048 Gains on dispositions, net (2) (4) $ 381,889 $ 274,711 $ 353,668 Total gains on contributions and dispositions, net $ 840,996 $ 1,121,745 $ 621,109 Gains on revaluation of equity investments upon acquisition of a controlling interest - 61,220 - Gains on redemptions of investments in co-investment ventures - - 136,289 Total gains on real estate transactions, net $ 840,996 $ 1,182,965 $ 757,398 (1) In 2017, we contributed 190 operating properties totaling 37.1 million square feet owned by Prologis North American Industrial Fund ("NAIF") to Prologis Targeted U.S. Logistics Fund ("USLF"), our unconsolidated co-investment venture. In exchange for the contribution, we received cash proceeds and additional units and USLF assumed $956.0 million of secured debt. (2) Includes the contribution and disposition of land parcels. (3) Amounts in 2018 reflect the adoption of the new revenue recognition standard under which we recognized the entire gain attributed to contributions of real estate properties to unconsolidated entities. Amounts in 2017 and 2016 reflect our prior recognition of the gain to the extent of the third-party ownership in the unconsolidated entity acquiring the property with the deferral of a portion of the gain related to our ownership. ( 4 ) In 2017, we sold our investment in Europe Logistics Venture 1. Operating Lease Agreements We lease our operating properties and certain land parcels to customers under agreements that are generally classified as operating leases. Our weighted average lease term remaining, based on square feet for all leases in effect at December 31, 2018, was 52 months. The following table summarizes our minimum lease payments on leases with lease periods greater than one year for space in our operating properties, prestabilized development properties and leases of land subject to ground leases at December 31, 2018 (in thousands): 2019 $ 2,006,475 2020 1,867,253 2021 1,589,102 2022 1,278,281 2023 990,970 Thereafter 3,293,320 Total $ 11,025,401 These amounts do not reflect future rental revenues from the renewal or replacement of existing leases and exclude reimbursements of operating expenses and rental increases that are not fixed. Lease Commitments We have entered into operating ground leases as a lessee on certain land parcels, principally on-tarmac facilities and office space with remaining lease terms of 1 to 90 years. The following table summarizes our future minimum rental payments under non-cancelable operating leases in effect at December 31, 2018 (in thousands): 2019 $ 38,769 2020 38,267 2021 34,307 2022 32,312 2023 30,180 Thereafter 670,147 Total $ 843,982 Due to the new lease standard that is effective January 1, 2019, as a lessee we are required to record a ROU asset and lease liability for our ground and office space leases that we expect to approximate the present value of our future minimum rental payments at December 31, 2018. See Note 2 for more information on the new lease standard.

Unconsolidated Entities

Unconsolidated Entities	12 Months Ended
	Dec. 31, 2018
Equity Method Investments And Joint Ventures [Abstract]
Unconsolidated Entities	Summary of Investments We have investments in entities through a variety of ventures. We co-invest in entities that own multiple properties with partners and investors and we provide asset and property management services to these entities, which we refer to as co-investment ventures. These entities may be consolidated or unconsolidated, depending on the structure, our partner’s participation and other rights and our level of control of the entity. This note details our investments in unconsolidated co-investment ventures, which are accounted for using the equity method of accounting and are related parties. See Note 11 for more detail regarding our consolidated investments that are not wholly owned. We also have other ventures, generally with one partner and that we do not manage, which we account for using the equity method. We refer to our investments in all entities accounted for using the equity method, both unconsolidated co-investment ventures and other ventures, collectively, as unconsolidated entities. The following table summarizes our investments in and advances to our unconsolidated entities at December 31 (in thousands): 2018 2017 Unconsolidated co-investment ventures $ 5,407,838 $ 5,274,702 Other ventures 337,456 221,748 Total $ 5,745,294 $ 5,496,450 Unconsolidated Co-Investment Ventures The following table summarizes our investments in the individual co-investment ventures at December 31 (dollars in thousands): Ownership Percentage Investment in and Advances to Co-Investment Venture 2018 2017 2018 2017 Prologis Targeted U.S. Logistics Fund, L.P. (“USLF”) 27.4 % 28.2 % $ 1,456,427 $ 1,383,021 FIBRA Prologis (1) 46.7 % 46.3 % 536,377 533,941 Prologis European Logistics Partners Sàrl (“PELP”) (2) 50.0 % 50.0 % 1,517,115 1,766,075 Prologis European Logistics Fund (“PELF”) 27.9 % 26.3 % 1,198,904 1,017,361 Prologis UK Logistics Venture (“UKLV”) (2) 15.0 % 15.0 % 68,002 29,382 Nippon Prologis REIT, Inc. (“NPR”) (3) 15.1 % 15.1 % 472,035 406,568 Prologis China Logistics Venture I, LP, II, LP and III, LP (“Prologis China Logistics Venture”) (2) 15.0 % 15.0 % 141,071 116,890 Brazil joint ventures 10.0 % 10.0 % 17,907 21,464 Total $ 5,407,838 $ 5,274,702 (1) At December 31, 2018, we owned 301.3 million units of FIBRA Prologis that had a closing price of Ps 30.30 ($1.54) per unit on the Mexican Stock Exchange. We have granted FIBRA Prologis a right of first refusal with respect to stabilized properties that we plan to sell in Mexico. ( 2 ) We have one partner in each of these co-investment ventures. (3 ) At December 31, 2018, we owned 0.3 million units of NPR that At December 31, 2018 and 2017, we had receivables from NPR of $122.0 million and $106.2 million, respectively, related to customer security deposits that originated through a leasing company owned by us that pertain to properties previously contributed to NPR. We have a corresponding payable to NPR’s customers in Other Liabilities In January 2019, we formed Prologis Brazil Logistics Venture (“PBLV”), a Brazilian unconsolidated co-investment venture, with one partner. We contributed an initial portfolio of real estate properties to PBLV consisting of 14 operating properties totaling 6.9 million square feet and 371 acres of land. We received cash proceeds and units for our 20% equity interest. The amounts recognized in Strategic Capital Revenues Earnings from Unconsolidated Entities, Net Strategic Capital Expenses The following table summarizes the Strategic Capital Revenues 2018 2017 2016 Recurring fees $ 230,746 $ 195,513 $ 174,315 Transactional fees 55,816 48,225 38,110 Promote revenues 116,290 127,519 88,750 Total strategic capital revenues from unconsolidated co-investment ventures (1) $ 402,852 $ 371,257 $ 301,175 (1) These amounts exclude strategic capital revenues from other ventures. The following table summarizes the key property information, financial position and operating information of our unconsolidated co-investment ventures (not our proportionate share) and the amounts we recognized in the Consolidated Financial Statements related to our unconsolidated co-investment ventures at December 31 and for the years ended December 31 (dollars and square feet in millions): U.S. Other Americas Europe Asia Total As of: 2018 2017 2018 2017 2018 2017 2018 2017 2018 2017 Key property information: Ventures 1 1 2 2 3 3 2 2 8 8 Operating properties 566 552 209 205 669 707 125 95 1,569 1,559 Square feet 91 88 39 37 159 166 51 41 340 332 Financial position: Unconsolidated co-investment ventures: Total assets ($) 7,303 7,062 2,137 2,118 13,028 13,586 7,089 6,133 29,557 28,899 Third-party debt ($) 2,094 2,313 838 756 2,548 2,682 2,668 2,328 8,148 8,079 Total liabilities ($) 2,350 2,520 862 782 3,615 3,655 3,006 2,685 9,833 9,642 Our investment balance ($) (1) 1,457 1,383 554 555 2,784 2,813 613 524 5,408 5,275 Our weighted average ownership (2) 27.4 % 28.2 % 44.4 % 43.4 % 33.2 % 32.8 % 15.1 % 15.1 % 28.3 % 28.8 % U.S. Other Americas Europe Asia Total Operating Information: 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 For the years ended: Unconsolidated co-investment ventures: Total revenues ($) 676 533 395 217 245 242 1,101 1,030 964 457 372 342 2,451 2,180 1,943 Net earnings ($) 150 139 57 63 71 71 509 406 333 88 182 101 810 798 562 Our earnings from unconsolidated co-investment ventures, net ($) 45 33 10 26 26 27 193 146 138 15 29 17 279 234 192 (1) Prologis’ investment balance is presented at our adjusted basis derived from the ventures’ U.S. GAAP information. The difference between our ownership interest of a venture’s equity and our investment balance at December 31, 2018 and 2017, results principally from four types of transactions: (i) deferred gains from the contribution of property to a venture prior to January 1, 2018 ($635.9 million and $667.3 million, respectively); (ii) recording additional costs associated with our investment in the venture ($94.4 million and $94.2 million, respectively); (iii) receivables, principally for fees and promotes ($166.7 million and $103.8 million, respectively); and (iv) customer security deposits retained subsequent to property contributions to NPR, as discussed above. For deferred gains from partial sales recorded prior to January 1, 2018, we recognize these gains over the lives of the underlying real estate properties or at the time of disposition to a third party. (2 ) Represents our weighted average ownership interest in all unconsolidated co-investment ventures based on each entity’s contribution of total assets, before depreciation, net of other liabilities. Equity Commitments Related to Certain Unconsolidated Co-Investment Ventures Certain unconsolidated co-investment ventures have equity commitments from us and our venture partners. Our venture partners fulfill their equity commitment with cash. We may fulfill our equity commitment through contributions of properties or cash. The equity contributions are generally used for the acquisition or development of properties but may be used for the repayment of debt or other general uses. The venture may obtain financing for the acquisition of properties and therefore the acquisition price of additional investments that the venture could make may be more than the equity commitment. Depending on market conditions, the investment objectives of the ventures, our liquidity needs and other factors, we may make additional contributions of properties or additional cash investments in these ventures through the remaining commitment period. At December 31, 2018, our remaining equity commitments were $242.0 million, primarily for Prologis China Logistics Venture. The equity commitments expire from 2020 to 2024.

Assets Held for Sale or Contrib

Assets Held for Sale or Contribution	12 Months Ended
	Dec. 31, 2018
Real Estate Assets Held For Development And Sale [Abstract]
Assets Held for Sale or Contribution	We had investments in certain real estate properties that met the criteria to be classified as held for sale or contribution at December 31, 2018 and 2017. At the time of classification, these properties were expected to be sold to third parties or were recently developed and expected to be contributed to unconsolidated co-investment ventures within twelve months. The amounts included in Assets Held for Sale or Contribution Assets held for sale or contribution consisted of the following at December 31 (dollars and square feet in thousands): 2018 2017 Number of operating properties 57 22 Square feet 8,236 5,384 Total assets held for sale or contribution $ 622,288 $ 342,060 Total liabilities associated with assets held for sale or contribution – included in Other Liabilities $ 12,972 $ 9,341

Other Assets and Other Liabilit

Other Assets and Other Liabilities	12 Months Ended
	Dec. 31, 2018
Text Block [Abstract]
Other Assets and Other Liabilities	The following table summarizes our other assets, net of amortization and depreciation, if applicable, at December 31 (in thousands): 2018 2017 Acquired lease intangibles $ 450,690 $ 202,087 Leasing commissions 346,852 306,461 Rent leveling 346,116 311,932 Fixed assets 112,211 109,823 Prepaid assets 108,581 102,179 Accounts receivable 107,141 85,118 Value added taxes receivable 97,047 84,339 Other notes receivable 35,338 35,406 Derivative assets 22,731 19,139 Management contracts 16,257 17,608 Deferred income taxes 8,767 13,533 Other 124,188 94,338 Total $ 1,775,919 $ 1,381,963 The following table summarizes our other liabilities, net of amortization, if applicable, at December 31 (in thousands): 2018 2017 Tenant security deposits $ 240,467 $ 209,741 Environmental liabilities 88,863 25,728 Unearned rents 86,083 71,392 Acquired lease intangibles 76,087 24,769 Income tax liabilities 59,766 56,988 Indemnification liability 36,476 39,480 Value added taxes payable 11,037 10,081 Deferred income 10,088 15,754 Derivative liabilities 8,159 32,229 Other 149,420 173,737 Total $ 766,446 $ 659,899 The acquired The following table summarizes the expected future amortization of leasing commissions and forgone rent (included in acquired lease intangibles) into amortization expense and above and below market leases (included in acquired lease intangibles) and rent leveling net assets into rental revenues, all based on the balances at December 31, 2018 (in thousands): Amortization Expense Net (Increase) Decrease to Rental Revenues 2019 $ 192,962 $ (28,646 ) 2020 153,851 20,947 2021 117,338 40,580 2022 88,279 46,408 2023 65,102 43,317 Thereafter 137,245 190,188 Total $ 754,777 $ 312,794

Debt

Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	All debt is incurred by the OP or its consolidated subsidiaries. The following table summarizes our debt at December 31 (dollars in thousands): 2018 2017 Weighted Average Interest Rate (1) Amount Outstanding (2) (3) Weighted Average Interest Rate (1) Amount Outstanding (2) Credit facilities 3.4 % $ 50,500 1.8 % $ 317,392 Senior notes (4) 2.7 % 8,304,147 3.0 % 6,067,277 Term loans and unsecured other 1.8 % 1,921,428 1.7 % 2,060,491 Secured mortgage (5) 5.1 % 813,740 5.3 % 967,471 Total 2.7 % $ 11,089,815 2.9 % $ 9,412,631 (1) The interest rates presented represent the effective interest rates (including amortization of debt issuance costs and the noncash premiums or discounts) at the end of the period for the debt outstanding and include the impact of undesignated and designated interest rate swaps, which effectively fix the interest rate on our variable rate debt. (2) We borrow in the functional currencies of the countries where we invest. Included in the outstanding balances at December 31 were borrowings denominated in the following currencies: 2018 2017 Amount Outstanding % of Total Amount Outstanding % of Total British pound sterling $ 635,972 5.8 % $ 671,522 7.1 % Canadian dollar 266,337 2.4 % 451,080 4.8 % Euro 4,893,693 44.1 % 3,839,422 40.8 % Japanese yen 1,951,844 17.6 % 1,306,380 13.9 % U.S. dollar 3,341,969 30.1 % 3,144,227 33.4 % Total $ 11,089,815 $ 9,412,631 (3) Through the DCT Transaction, we assumed $1.9 billion of debt with a weighted average interest rate of 3.4%, which includes noncash premium. During the third quarter of 2018, we paid down $1.8 billion of the assumed debt through the senior note issuances described below. We incurred prepayment penalties of $48.7 million upon extinguishment that was reduced by the $46.5 million premium recorded upon assumption of this debt in the DCT Transaction, resulting in a loss of $2.2 million. (4) Notes are due January 2020 to September 2048 with effective interest rates ranging from 0.0% to 4.5% at December 31, 2018. (5) Debt is due January 2019 to November 2027 with effective interest rates ranging from 0.3% to 7.8% at December 31, 2018. The debt is principally secured by 133 operating properties and one prestabilized development property with an aggregate undepreciated cost of $2.2 billion at December 31, 2018. Credit Facilities We have a global senior credit facility (the “Global Facility”), under which we may draw in British pounds sterling, Canadian dollars, euro, Japanese yen and U.S. dollars on a revolving basis up to $3.0 billion (subject to currency fluctuations). Pricing under the Global Facility, including the spread over LIBOR, facility fees and letter of credit fees, varies based on the public debt ratings of the OP. The Global Facility was scheduled to mature in April 2020. In January 2019, we upsized our Global Facility to draw in British pounds sterling, Canadian dollars, euro, Japanese yen, Mexican pesos and U.S. dollars on a revolving basis up to $3.5 billion (subject to currency fluctuations). The upsized Global Facility is scheduled to mature in January 2023; however, we may extend the maturity date for six months on two occasions, subject to the satisfaction of certain conditions and payment of extension fees. We have the ability to increase the Global Facility to $4.5 billion, subject to currency fluctuations and obtaining additional lender commitments. We also have a Japanese yen revolver (the “Revolver”) with availability of ¥50.0 billion ($454.9 million at December 31, 2018). We have the ability to increase the Revolver to ¥65.0 billion ($591.4 million at December 31, 2018), subject to obtaining additional lender commitments. Pricing under the Revolver, including the spread over LIBOR, facility fees and letter of credit fees, varies based on the public debt ratings of the OP. The Revolver is scheduled to mature in February 2021; however, we may extend the maturity date for one year, subject to the satisfaction of certain conditions and payment of extension fees. We refer to the Global Facility and the Revolver, collectively, as our “Credit Facilities.” The following table summarizes information about our Credit Facilities (dollars in millions): 2018 2017 2016 For the years ended December 31: Weighted average daily interest rate 3.1 % 1.3 % 1.4 % Weighted average daily borrowings $ 253 $ 111 $ 128 Maximum borrowings outstanding at any month-end $ 485 $ 317 $ 307 At December 31: Aggregate lender commitments $ 3,470 $ 3,490 $ 3,306 Less: Borrowings outstanding 51 317 35 Outstanding letters of credit 31 33 36 Current availability $ 3,388 $ 3,140 $ 3,235 Senior Notes The senior notes are unsecured and our obligations are effectively subordinated in certain respects to any of our debt that is secured by a lien on real property, to the extent of the value of such real property. The senior notes require interest payments be made quarterly, semi-annually or annually. All of the senior notes are redeemable at any time at our option, subject to certain prepayment penalties. Such repurchase and other terms are governed by the provisions of indenture agreements, various note purchase agreements or trust deeds. The following table summarizes the issuances of senior notes during 2018 (principal in thousands): Initial Borrowing Date Principal (1) Stated Interest Rate Maturity Date Borrowing Currency USD January (2) € 400,000 $ 494,180 Euribor + 0.3% January 2020 June $ 700,000 $ 700,000 3.9% – 4.4% September 2028 – 2048 July € 700,000 $ 818,720 1.9% January 2029 September ¥ 55,100,000 $ 488,714 0.7% – 1.5% September 2025 – 2038 (1) The exchange rate used to calculate into U.S. dollars was the spot rate at the settlement date. (2) In association with the issuance, we entered into cash flow hedges to effectively fix the interest rate, as discussed in Note 15. We issued senior notes as described above principally to pay down $1.8 billion of debt assumed in the DCT Transaction and other debt, as well as for capital improvements to properties and general corporate purposes. Term Loans The following table summarizes our outstanding term loans at December 31 (dollars and borrowing currency in thousands): Term Loan Borrowing Currency Initial Borrowing Date Lender Commitment at 2018 Amount Outstanding at 2018 Amount Outstanding at 2017 Interest Rate Maturity Date Borrowing Currency USD USD USD 2017 Term Loan (1) USD, EUR, JPY and GBP June 2014 $ 500,000 $ 500,000 $ 500,000 $ 500,000 LIBOR + 0.9% May 2020 2015 Canadian Term Loan (2) CAD December 2015 $ 170,506 $ 125,107 125,107 296,595 CDOR + 0.9% February 2023 2016 Yen Term Loan JPY August 2016 ¥ 100,000,000 $ 909,813 909,813 1,065,965 Yen LIBOR + 0.7% August 2022 – 2023 March 2017 Yen Term Loan JPY March 2017 ¥ 12,000,000 $ 109,178 109,178 106,597 0.9% and 1.0% March 2027 – 2028 October 2017 Yen Term Loan JPY October 2017 ¥ 10,000,000 $ 90,981 90,981 88,830 0.9% October 2032 December 2018 Yen Term Loan JPY December 2018 ¥ 20,000,000 $ 181,963 181,963 - 1.2% and Yen LIBOR + 0.7% December 2031 – June 2033 Subtotal 1,917,042 2,057,987 Debt issuance costs, net (8,230 ) (11,042 ) Total $ 1,908,812 $ 2,046,945 (1) We may increase the borrowings on the 2017 Term Loan up to $1.0 billion, subject to obtaining additional lender commitments. We paid down $2.0 billion and $1.2 billion and reborrowed $2.0 billion and $1.5 billion in 2018 and 2017, respectively. We may extend the maturity date twice, by one year each, subject to satisfaction of certain conditions and the payment of an extension fee. (2) During 2018, we paid down CAD 201.4 million ($158.9 million) on the 2015 Canadian Term Loan. In association with the pay down, we terminated our Canadian-denominated cash flow hedges. See Note 15 for more information. Long-Term Debt Maturities Principal payments due on our debt, for each year through the period ended December 31, 2023, and thereafter were as follows at December 31, 2018 (in thousands): Unsecured Credit Senior Term Loans Secured Maturity Facilities Notes and Other Mortgages Total 2019 (1) $ - $ - $ 868 $ 272,188 $ 273,056 2020 (2) 50,500 1,145,000 500,723 24,466 1,720,689 2021 - 801,500 778 199,560 1,001,838 2022 - 801,500 273,786 12,103 1,087,389 2023 - 850,000 762,887 39,248 1,652,135 Thereafter - 4,766,808 390,616 268,795 5,426,219 Subtotal 50,500 8,364,808 1,929,658 816,360 11,161,326 Premiums (discounts), net - (26,173 ) - 945 (25,228 ) Debt issuance costs, net - (34,488 ) (8,230 ) (3,565 ) (46,283 ) Total $ 50,500 $ 8,304,147 $ 1,921,428 $ 813,740 $ 11,089,815 (1) We expect to repay the amounts maturing in the next twelve months with cash generated from operations, proceeds from dispositions of real estate properties, or as necessary, with borrowings on our Credit Facilities. (2) Included in the 2020 maturities was the Global Facility that was recast in 2019 and now can be extended to 2024 and the 2017 Term Loan that can be extended until 2022. Interest Expense The following table summarizes the components of interest expense for the years ended December 31 (in thousands): 2018 2017 2016 Gross interest expense $ 268,942 $ 328,228 $ 383,098 Amortization of debt premiums, net (590 ) (13,728 ) (30,596 ) Amortization of debt issuance costs, net 13,243 14,479 15,459 Interest expense before capitalization $ 281,595 $ 328,979 $ 367,961 Capitalized amounts (52,454 ) (54,493 ) (64,815 ) Net interest expense $ 229,141 $ 274,486 $ 303,146 Total cash paid for interest, net of receipts and amounts capitalized $ 205,485 $ 278,313 $ 322,442 Early Extinguishment of Debt Over the last three years, we repurchased or repaid certain debt before the maturity date in an effort to reduce our borrowing costs and extend our debt maturities. As a result, we recognized gains or losses represented by the difference between the recorded debt (including premiums and discounts and related debt issuance costs) and the consideration we paid to retire the debt, including fees. Fees associated with the restructuring of debt that meets the modification criteria, along with existing unamortized premium or discount and debt issuance costs, are amortized over the term of the new debt. We recognized a net loss in 2018 (excluding the payoff of $1.8 billion of debt assumed in the DCT Transaction, discussed above) and 2017 of $0.4 million and $68.4 million, respectively, and a gain in 2016 of $2.5 million. The following table summarizes the activity related to the repurchase of debt and net loss on early extinguishment of debt for 2017 (in millions): Senior notes: Original principal amount $ 1,495.3 Cash purchase price $ 1,566.5 Secured mortgage debt: Original principal amount $ 538.3 Cash repayment price $ 538.3 Total: Original principal amount $ 2,033.6 Cash purchase/repayment price $ 2,104.8 Losses on early extinguishment of debt $ 68.4 Financial Debt Covenants We have $8.3 billion of senior notes and $1.9 billion of term loans outstanding at December 31, 2018 that were subject to certain financial covenants under their related indentures. We are also subject to financial covenants under our Credit Facilities and certain secured mortgage debt. At December 31, 2018, we were in compliance with all of our financial debt covenants. Guarantee of Finance Subsidiary Debt In 2018, we formed finance subsidiaries as part of our operations in Europe (Prologis Euro Finance LLC), Japan (Prologis Yen Finance LLC) and the U.K. (Prologis Sterling Finance LLC). These entities are 100% indirectly owned by the OP and all unsecured debt issued or to be issued by each entity is or will be fully and unconditionally guaranteed by the OP. There are no restrictions or limits on the OP’s ability to obtain funds from its subsidiaries by dividend or loan. In reliance on Rule 3-10 of Regulation S-X, the separate financial statements of Prologis Euro Finance LLC, Prologis Yen Finance LLC and Prologis Sterling Finance LLC are not provided.

Stockholders' Equity of Prologi

Stockholders' Equity of Prologis, Inc.	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity of Prologis, Inc.	Shares Authorized At December 31, 2018, 1.1 billion shares were authorized to be issued by the Parent, of which 1.0 billion shares represent common stock. Our board of directors (the “Board”) may, without stockholder approval, classify or reclassify any unissued shares of our stock from time to time by setting or changing the preferences, conversion or other rights, voting powers, restrictions, limitations as to distributions, qualifications and terms or conditions of redemption of such shares. Common Stock On August 22, 2018, we issued 96.2 million common shares in the DCT Transaction. See Note 3 for more detail on the transaction. We did not issue any shares of common stock under our at-the-market program during 2018, 2017 and 2016. We have an equity distribution agreement that allows us to sell up to $750 million aggregate gross sales proceeds of shares of common stock, of which $535.2 million remains available for sale, through six designated agents, who earn a fee of up to 2% of the gross proceeds, as agreed to on a transaction-by-transaction basis. Under the 2012 Long-Term Incentive Plan, certain of our employees and outside directors are able to participate in equity-based compensation plans. See Note 12 for additional information on equity-based compensation plans. Preferred Stock At December 31, 2018 and 2017 our Series Q preferred stock outstanding had a dividend rate of 8.54%, and will be redeemable at our option on or after November 13, 2026. Holders have, subject to certain conditions, limited voting rights and all holders are entitled to receive cumulative preferential dividends based on liquidation preference. The dividends are payable quarterly in arrears on the last day of each quarter. Dividends are payable when, and if, they have been declared by the Board, out of funds legally available for the payment of dividends. Ownership Restrictions For us to qualify as a REIT, five or fewer individuals may not own more than 50% of the value of our outstanding stock at any time during the last half of our taxable year. Therefore, our charter restricts beneficial ownership (or ownership generally attributed to a person under the REIT rules), by a person, or persons acting as a group, of issued and outstanding common and preferred stock that would cause that person to own or be deemed to own more than 9.8% (by value or number of shares, whichever is more restrictive) of our issued and outstanding capital stock. Furthermore, subject to certain exceptions, no person shall at any time directly or indirectly acquire ownership of more than 25% of any of the preferred stock. These provisions assist us in protecting and preserving our REIT status and protect the interests of stockholders in takeover transactions by preventing the acquisition of a substantial block of outstanding shares of stock. Shares of stock owned by a person or group of people in excess of these limits are subject to redemption by us. The provision does not apply where a majority of the Board, in its sole and absolute discretion, waives such limit after determining that our status as a REIT for federal income tax purposes will not be jeopardized. Dividends To comply with the REIT requirements of the Internal Revenue Code, we are generally required to make common and preferred stock dividends (other than capital gain distributions) to our stockholders in amounts that together at least equal (i) the sum of (a) 90% of our “REIT taxable income” computed without regard to the dividends paid deduction and net capital gains and (b) 90% of the net income (after tax), if any, from foreclosure property, minus (ii) certain excess noncash income. Our common stock distribution policy is to distribute a percentage of our cash flow that ensures that we will meet the distribution requirements of the Internal Revenue Code and that allows us to also retain cash to meet other needs, such as capital improvements and other investment activities. Our tax return for the year ended December 31, 2018 has not been filed. The taxability information presented for our dividends paid in 2018 is based on management’s estimate. Our tax returns for open tax years have not been examined by the Internal Revenue Service, other than those discussed in Note 13. Consequently, the taxability of dividends is subject to change. In 2018, 2017 and 2016, we paid all of our dividends in cash. The following summarizes the taxability of our common and preferred stock dividends for the years ended December 31: 2018 (1) 2017 2016 Common Stock: Ordinary income $ 1.34 $ 1.23 $ 0.60 Qualified dividend 0.03 0.01 0.15 Capital gains 0.55 0.52 0.93 Total distribution $ 1.92 $ 1.76 $ 1.68 Preferred Stock – Series Q: Ordinary income $ 2.98 $ 2.91 $ 2.02 Qualified dividend 0.06 0.08 0.29 Capital gains 1.23 1.28 1.96 Total dividend $ 4.27 $ 4.27 $ 4.27 (1) Taxability for 2018 is estimated. Common stock dividends are characterized for federal income tax purposes as ordinary income, qualified dividend, capital gains, non-taxable return of capital or a combination of the four. Common stock dividends that exceed our current and accumulated earnings and profits (calculated for tax purposes) constitute a return of capital rather than a dividend and generally reduce the stockholder’s basis in the common stock. To the extent that a dividend exceeds both current and accumulated earnings and profits and the stockholder’s basis in the common stock, it will generally be treated as a gain from the sale or exchange of that stockholder’s common stock. At the beginning of each year, we notify our stockholders of the taxability of the common stock dividends paid during the preceding year. Pursuant to the terms of our preferred stock, we are restricted from declaring or paying any dividend with respect to our common stock unless and until all cumulative dividends with respect to the preferred stock have been paid and sufficient funds have been set aside for dividends that have been declared for the relevant dividend period with respect to the preferred stock.

Partners' Capital of Prologis,

Partners' Capital of Prologis, L.P.	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Partners' Capital of Prologis, L.P.	Distributions paid on the common limited partnership units, and the taxability of those distributions, are similar to dividends paid on the Parent’s common stock disclosed above. On August 22, 2018, we issued 3.6 million common limited partnership units in the OP in the DCT Transaction. See Note 3 for more detail on the transaction. We issued Class A Units in the OP through an acquisition of a portfolio of properties in 2015. The Class A Units generally have the same rights as the existing common limited partnership units of the OP, except that the Class A Units are entitled to a quarterly distribution equal to $0.64665 per unit so long as the common limited partnership units receive a quarterly distribution of at least $0.40 per unit (in the event the common limited partnership units receive a quarterly distribution of less than $0.40 per unit, the Class A Unit distribution would be reduced by a proportionate amount). Class A Units are convertible into common limited partnership units at an initial conversion rate of one-for-one. The conversion rate will be increased or decreased to the extent that, at the time of conversion, the net present value of the distributions paid with respect to the Class A Units are less or more than the distributions paid on common limited partnership units from the time of issuance of the Class A Units until the time of conversion. At December 31, 2018 and 2017, the Class A Units were convertible into 8.4 million and 8.5 million common limited partnership units. The OP may redeem the Class A Units at any time after October 7, 2025, for an amount in cash equal to the then-current number of the common limited partnership units into which the Class A Units are convertible, multiplied by $43.11, subject to the holders’ right to convert the Class A Units into common limited partnership units. Dividends paid to the Class A Units were $2.58660 annually during the years ended December 31, 2018, 2017 and 2016.

Noncontrolling Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interest [Abstract]
Noncontrolling Interests	Prologis, L.P. We report noncontrolling interests related to several entities we consolidate but of which we do not own 100% of the equity. These entities include two real estate partnerships that have issued limited partnership units to third parties. Depending on the specific partnership agreements, these limited partnership units are redeemable for cash or, at our option, into shares of the Parent’s common stock, generally at a rate of one share of common stock to one unit. We also consolidate certain entities in which we do not own 100% of the equity but the equity of these entities is not exchangeable into our common stock. As discussed in Note 1, the Parent has complete responsibility, power and discretion in the day-to-day management of the OP. The Parent, through its majority interest, has the right to receive benefits from and incur losses of the OP. In addition, the OP does not have either substantive liquidation rights or substantive kick-out rights without cause or substantive participating rights that could be exercised by a simple majority of noncontrolling interests. The absence of such rights renders the OP as a VIE. Accordingly, the Parent is the primary beneficiary and therefore consolidates the OP. Prologis, Inc. The noncontrolling interests of the Parent include the noncontrolling interests presented above for the OP, as well as the limited partnership units in the OP that are not owned by the Parent. The outstanding limited partnership units receive quarterly cash distributions equal to the quarterly dividends paid on our common stock pursuant to the terms of the applicable partnership agreements. The following table summarizes our ownership percentages and noncontrolling interests and the consolidated entities’ total assets and total liabilities at December 31 (dollars in thousands): Our Ownership Percentage Noncontrolling Interests Total Assets Total Liabilities 2018 2017 2018 2017 2018 2017 2018 2017 Prologis U.S. Logistics Venture 55.0 % 55.0 % $ 2,697,095 $ 2,581,629 $ 6,072,087 $ 6,030,819 $ 92,782 $ 284,162 Other consolidated entities (1) various various 139,374 78,613 1,045,202 806,138 53,145 30,330 Prologis, L.P. 2,836,469 2,660,242 7,117,289 6,836,957 145,927 314,492 Limited partners in Prologis, L.P. (2) (3) 666,326 414,341 - - - - Prologis, Inc. $ 3,502,795 $ 3,074,583 $ 7,117,289 $ 6,836,957 $ 145,927 $ 314,492 (1) Includes our two partnerships that have issued limited partnership units to third parties, as discussed above, along with various other consolidated entities. The limited partnership units outstanding at December 31, 2018 and 2017 were exchangeable into cash or, at our option, 0.7 million and 1.0 million shares of the Parent’s common stock, respectively. (2) We had 8.8 million and 8.9 million Class A Units that were convertible into 8.4 million and 8.5 million limited partnership units of the OP at December 31, 2018 and 2017, respectively. (3) At December 31, 2018 and 2017, excluding the Class A Units, there were limited partnership units in the OP that were exchangeable into cash or, at our option, 7.2 million and 4.1 million shares of the Parent’s common stock, respectively. Also included are the vested OP Long-Term Incentive Plan Units associated with our long-term compensation plan. See further discussion of Long-Term Incentive Plan Units in Note 12.

Long-Term Compensation

Long-Term Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Long-Term Compensation	The 2012 Long-Term Incentive Plan (“2012 LTIP”) provides for grants of awards to officers, directors, employees and consultants of the Parent or its subsidiaries. Awards can be in the form of: full value awards, stock appreciation rights, stock options (non-qualified options and incentive stock options) and cash incentive awards. Full value awards generally consist of: (i) common stock; (ii) restricted stock units (“RSUs”); (iii) OP LTIP units (“LTIP Units”) and (iv) Prologis Outperformance Plan (“POP”) OP LTIP units (“POP LTIP Units”). The awards under the 2012 LTIP have been issued under the following components of our equity-based compensation plans and programs at December 31, 2018: (i) POP; (ii) Prologis Promote Plan (“PPP”); (iii) annual long-term incentive (“LTI”) equity award program (“Annual LTI Award”); and (iv) annual bonus exchange program. Under all of these components, certain employees may elect to receive their equity award payout either in the form of RSUs or other equity of the Parent or LTIP Units of the OP. No participant can be granted more than 1.5 million shares of common stock under the 2012 LTIP in any one calendar year. Awards may be made under the 2012 LTIP until it is terminated by the Board or until the ten-year anniversary of the effective date of the plan. We have 27.2 million shares reserved for issuance, of which 15.9 million shares of common stock were available for future issuance at December 31, 2018. Each LTIP Unit counts as one share of common stock for purposes of calculating the limit on shares that may be issued. Equity-Based Compensation Plans and Programs Prologis Outperformance Plan (“POP”) We allocate participation points to participants under our POP corresponding to three-year performance periods beginning January 1. The fair value of the awards is measured at the grant date and amortized over the period from the grant date to the date at which the awards would become vested. The performance hurdle (the “Outperformance Hurdle”) at the end of the initial three-year performance period requires our three-year compound annualized total stockholder return (“TSR”) to exceed a threshold set at the three-year compound annualized TSR for the Morgan Stanley Capital International (“MSCI”) US REIT Index for the same period plus 100 basis points (“Index”). If the Outperformance Hurdle is met, a compensation pool will be formed equal to 3.0% of the excess value created, subject to a maximum as described by performance period below. POP awards cannot be paid at a time when our absolute TSR is negative. If after seven years our absolute TSR has not become positive, the awards will be forfeited. For the 2016 – 2018 and 2017 – 2019 performance periods, awards (“Initial Awards”), equaling in aggregate up to $75 million of the applicable compensation pool, will be paid after the end of the initial three-year performance period (to the extent the Outperformance Hurdle is met). One-third of any compensation pool amount in excess of $75 million (up to 0.5% of our equity market capitalization) can be earned at the end of each of the three years after the Initial Awards are earned, if our performance meets or exceeds the Index at the end of each of such three years. In addition, participants will not be able to sell or transfer any equity they receive as awards until three years after the end of the initial performance period. Beginning with the 2018 – 2020 performance period, the POP award structure was amended. The plan requires an absolute maximum cap of $100 million on the compensation pool for the 2018 – 2020 performance period. If an award is earned at the end of the initial three-year performance period, then 20% of the POP award is paid at the end of the initial performance period and the remaining 80% is subject to additional seven-year cliff vesting. The 20% that is paid at the end of the initial three-year performance period is subject to an additional three-year holding requirement. In 2018, our Named Executive Officers (“NEOs”) adopted the vesting construct of the 2018 – 2020 performance period retroactively for the 2016 – 2018 and 2017 – 2019 performance periods. The change in vesting did not result in a remeasurement event under the accounting rules. Each participant is eligible to receive a percentage of the total compensation pool based on the number of participation points allocated to the participant, or in the case of certain NEOs, a set percentage of the compensation pool. If the performance criteria are met, the participants’ points or compensation pool percentage will be paid in the form of common stock or POP LTIP Units, as elected by the participant. Annually, a participant may exchange their participation points or compensation pool percentage for POP LTIP Units. If the performance criteria are not met, the participants’ points, compensation pool percentage and POP LTIP Units will be forfeited. At December 31, 2018, all awards were equity classified. We use a Monte Carlo valuation model to value the participation points allocated under the POP. The following table details the assumptions used for each grant based on the year it was granted (dollars in thousands): 2018 2017 2016 Risk free interest rate 2.1 % 1.5 % 1.0 % Expected volatility 16.5 % 22.2 % 20.5 % Aggregate fair value $ 23,300 $ 20,400 $ 26,600 Total remaining compensation cost related to the POP at December 31, 2018, was $33.9 million, prior to adjustments for capitalized amounts due to our development activities. The remaining compensation cost will be recognized through 2027, with a weighted average period of 3.2 years. The performance criteria were met for the 2016 – 2018, 2015 – 2017 and 2014 – 2016 performance periods, which resulted in the pool being awarded in January 2019, 2018 and 2017, respectively, in the form of common stock and POP LTIP Units. See below for details on these performance periods (dollars and units in thousands): 2016 – 2018 2015 – 2017 2014 – 2016 Performance pool $ 75,000 $ 110,230 $ 62,220 Common stock shares 379 582 486 POP LTIP Units and LTIP Units 824 1,170 698 Grant date fair value $ 62.38 $ 62.65 $ 52.53 Other Equity-Based Compensation Plans and Programs Awards may be issued in the form of RSUs or LTIP Units at the participants’ elections under the following equity-based compensation plans and programs. RSUs and LTIP Units are valued based on the market price of the Parent’s common stock on the date the award is granted and the grant date value is charged to compensation expense over the service period. Beginning with the February 2018 grants, the service period was lengthened from three to four years. Dividends and distributions are paid with respect to both RSUs and LTIP Units during the vesting period, and therefore they are considered participating securities. We do not allocate undistributed earnings to participating securities as our net earnings per share or unit would not be materially different. The value of the dividend is charged to retained earnings for RSUs and the distribution is charged to Net Income Attributable to Noncontrolling Interests Prologis Promote Plan (“PPP”) Under the PPP, we establish a compensation pool for certain employees that is equal to 40% of the third-party portion of promotes earned by Prologis from the co-investment ventures. The awards may be settled in some combination of cash and full value awards, at our election. Annual LTI Equity Award Program (“Annual LTI Award”) The Annual LTI Award provides for grants to certain employees subject to our performance against benchmark indices that relate to the most recent year’s performance. Annual Bonus Exchange Program Under our bonus exchange program, generally all our employees may elect to receive all or a portion of their annual cash bonus in equity. Equity awards granted through the bonus exchange are generally valued at a premium to the cash bonus exchanged, excluding the NEOs. Summary of Award Activity RSUs Each RSU represents the right to receive one share of common stock of the Parent. The following table summarizes the activity for RSUs for the year ended December 31, 2018 (units in thousands): Unvested RSUs Weighted Average Grant Date Fair Value Balance at January 1, 2018 1,374 $ 45.57 Granted 761 61.20 Vested and distributed (787 ) 45.40 Forfeited (93 ) 54.84 Balance at December 31, 2018 1,255 $ 54.48 The fair value of stock awards granted and vested was $38.5 million and $32.9 million for 2017 and $32.5 million and $33.7 million for 2016, respectively, based on the weighted average grant date fair value per unit. Total remaining compensation cost related to RSUs outstanding at December 31, 2018, was $38.5 million, prior to adjustments for capitalized amounts due to our development activities. The remaining compensation cost will be recognized through 2022, with a weighted average period of 1.2 years. LTIP Units An LTIP Unit represents a partnership interest in the OP. After vesting and the satisfaction of certain conditions, an LTIP Unit may be exchangeable for a common limited partnership unit in the OP and then redeemable for a share of common stock (or cash at our option). The following table summarizes the activity for LTIP Units for the year ended December 31, 2018 (units in thousands): Vested LTIP Units Unvested LTIP Units Unvested Weighted Average Grant Date Fair Value Balance at January 1, 2018 1,532 1,829 $ 46.48 Granted - 1,346 61.36 Forfeited - (81 ) 48.23 Vested LTIP Units 917 (917 ) 44.88 Vested POP LTIP Units (1) 1,170 - N/A Conversion to common limited partnership units (326 ) - N/A Balance at December 31, 2018 3,293 2,177 $ 56.05 (1) Vested units were based on the POP performance criteria being met for the 2015 – 2017 performance period and represented the earned award amount. Vested units are included in the POP award table above. Unvested POP LTIP Units for the 2015 – 2017 performance period were forfeited to the extent not earned. The fair value of stock awards granted and vested was $53.2 million and $28.3 million for 2017 and $38.0 million and $18.8 million for 2016, respectively, based on the weighted average grant date fair value per unit. Total remaining compensation cost related to LTIP Units at December 31, 2018, was $77.2 million, prior to adjustments for capitalized amounts due to our development activities. The remaining compensation cost will be recognized through 2022, with a weighted average period of 1.1 years. Stock Options We have 0.3 million stock options outstanding and exercisable at December 31, 2018, with a weighted average exercise price of $27.17 and a weighted average life of 1.5 years. The aggregate intrinsic value of exercised options was $13.8 million, $28.6 million, and $45.6 million for the years ended December 31, 2018, 2017 and 2016, respectively. No stock options were granted in the three-year period ended December 31, 2018. Other Plans The Prologis 401(k) Plan (the “401(k) Plan”) provides for matching employer contributions of $0.50 for every dollar contributed by an employee, up to 6% of the employee’s annual compensation (within the statutory compensation limit). In the 401(k) Plan, vesting in the matching employer contributions is based on the employee’s years of service, with 100% vesting at the completion of one year of service. Our contributions under the matching provisions were $2.9 million, $2.8 million and $2.7 million for the years ended December 31, 2018, 2017 and 2016, respectively. We have a non-qualified savings plan that allows highly compensated employees the opportunity to defer the receipt and income taxation of a certain portion of their compensation in excess of the amount permitted under the 401(k) Plan. There has been no employer matching in the three-year period ended December 31, 2018 .

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Components of Earnings Before Income Taxes The following table summarizes the components of earnings before income taxes for the years ended December 31 (in thousands): 2018 2017 2016 Domestic $ 1,078,678 $ 1,207,503 $ 719,018 International 807,612 608,065 628,086 Earnings before income taxes $ 1,886,290 $ 1,815,568 $ 1,347,104 Summary of Current and Deferred Income Taxes The following table summarizes the components of the provision for income taxes for the years ended December 31 (in thousands): 2018 2017 2016 Current income tax expense: U.S. federal $ 1,727 $ 214 $ 7,153 International 50,731 45,185 38,493 State and local 9,424 14,215 14,443 Total current income tax expense 61,882 59,614 60,089 Deferred income tax expense (benefit): U.S. federal (317 ) 2,533 (3,306 ) International 1,765 (7,538 ) (2,219 ) Total deferred income tax expense (benefit) 1,448 (5,005 ) (5,525 ) Total income tax expense $ 63,330 $ 54,609 $ 54,564 Current Income Taxes Current income tax expense incurred in international jurisdictions over the last three years is due to tax charged on the following: (i) the contribution of real estate properties to our unconsolidated co-investment ventures and sales to third-parties; (ii) recurring and transactional fees earned; and (iii) taxable earnings from unconsolidated co-investment ventures. For the year ended December 31, 2016, we recognized a net expense of $0.3 million for uncertain tax positions. For the years ended December 31, 2018 and 2017, we did not recognize any expense for uncertain tax positions. During the years ended December 31, 2018, 2017 and 2016, cash paid for income taxes, net of refunds, was $60.3 million, $46.7 million and $29.3 million, respectively. Deferred Income Taxes The deferred income tax benefits recognized in 2017 and 2016 were principally due to the reversal of deferred tax liabilities from the contribution and disposition of properties. The following table summarizes the deferred income tax assets and liabilities at December 31 (in thousands): 2018 2017 Gross deferred income tax assets: NOL carryforwards $ 336,485 $ 334,358 Basis difference – real estate properties 55,198 53,902 Basis difference – equity investments 5,448 2,567 Basis difference – intangibles 1,076 2,173 Section 163(j) interest limitation 4,771 26,280 Capital loss carryforward 1 10,566 Other – temporary differences 3,487 5,724 Total gross deferred income tax assets 406,466 435,570 Valuation allowance (379,987 ) (410,896 ) Gross deferred income tax assets, net of valuation allowance 26,479 24,674 Gross deferred income tax liabilities: Basis difference – real estate properties 69,157 63,246 Basis difference – equity investments 2,380 1,114 Other – temporary differences 2,941 769 Total gross deferred income tax liabilities 74,478 65,129 Net deferred income tax liabilities $ 47,999 $ 40,455 The Tax Cuts and Jobs Act, enacted on December 22, 2017, reduced the corporate federal tax rate in the U.S. to 21.0%, effective upon enactment. As such, deferred tax assets and liabilities for entities in the U.S. were measured using the lower corporate federal tax rate at December 31, 2018 and 2017. At December 31, 2018, we have finalized the accounting for the income tax effects of the Tax Cuts and Jobs Act. At December 31, 2018, we had NOL carryforwards as follows (in thousands): U.S. Europe Mexico Japan Other Gross NOL carryforward $ 160,882 $ 646,521 $ 358,070 $ 115,176 $ 44,843 Tax-effected NOL carryforward 38,943 153,876 110,152 22,517 10,997 Valuation allowance (37,516 ) (145,460 ) (110,152 ) (22,517 ) (8,794 ) Net deferred tax asset – NOL carryforward $ 1,427 $ 8,416 $ - $ - $ 2,203 Expiration periods 2022 – indefinite 2019 – indefinite 2019 – 2029 2019 – 2027 2019 – indefinite The deferred tax asset valuation allowance at December 31, 2018, was adequate to reduce the total deferred tax asset to an amount that we estimate will more likely than not be realized. Liability for Uncertain Tax Positions During the years ended December 31, 2018, 2017 and 2016, we believe that we have complied with the REIT requirements of the Internal Revenue Code. The statute of limitations for our tax returns is generally three years. As such, our tax returns that remain subject to examination would be primarily from 2015 and thereafter. The liability for uncertain tax positions was $3.0 million for the years ended December 31, 2018 and 2017, and primarily consisted of estimated income tax liabilities in Mexico.

Earnings Per Common Share or Un

Earnings Per Common Share or Unit	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Common Share or Unit	We determine basic earnings per share or unit based on the weighted average number of shares of common stock or units outstanding during the period. We compute diluted earnings per share or unit based on the weighted average number of shares or units outstanding combined with the incremental weighted average effect from all outstanding potentially dilutive instruments. The computation of our basic and diluted earnings per share and unit for the years ended December 31 (in thousands, except per share and unit amounts) was as follows: Prologis, Inc. 2018 2017 2016 Net earnings attributable to common stockholders – Basic $ 1,643,426 $ 1,641,931 $ 1,203,218 Net earnings attributable to exchangeable limited partnership units (1) 49,743 46,280 37,079 Adjusted net earnings attributable to common stockholders – Diluted $ 1,693,169 $ 1,688,211 $ 1,240,297 Weighted average common shares outstanding – Basic 567,367 530,400 526,103 Incremental weighted average effect on exchange of limited partnership units (1) 17,768 15,945 16,833 Incremental weighted average effect of equity awards 5,104 5,955 3,730 Weighted average common shares outstanding – Diluted (2) 590,239 552,300 546,666 Net earnings per share attributable to common stockholders: Basic $ 2.90 $ 3.10 $ 2.29 Diluted $ 2.87 $ 3.06 $ 2.27 Prologis, L.P. 2018 2017 2016 Net earnings attributable to common unitholders $ 1,692,313 $ 1,686,945 $ 1,237,519 Net earnings attributable to Class A Units (24,465 ) (26,642 ) (20,069 ) Net earnings attributable to common unitholders – Basic 1,667,848 1,660,303 1,217,450 Net earnings attributable to Class A Units 24,465 26,642 20,069 Net earnings attributable to exchangeable other limited partnership units 856 1,266 2,778 Adjusted net earnings attributable to common unitholders – Diluted $ 1,693,169 $ 1,688,211 $ 1,240,297 Weighted average common units outstanding – Basic 575,798 536,335 532,326 Incremental weighted average effect on exchange of Class A Units 8,446 8,607 8,775 Incremental weighted average effect on exchange of other limited partnership units 891 1,403 1,835 Incremental weighted average effect of equity awards of Prologis, Inc. 5,104 5,955 3,730 Weighted average common units outstanding – Diluted (2) 590,239 552,300 546,666 Net earnings per unit attributable to common unitholders: Basic $ 2.90 $ 3.10 $ 2.29 Diluted $ 2.87 $ 3.06 $ 2.27 (1) The exchangeable limited partnership units include the units as discussed in Note 11. Earnings allocated to the exchangeable OP units not held by the Parent have been included in the numerator and exchangeable common units have been included in the denominator for the purpose of computing diluted earnings per share for all periods as the per share and unit amount is the same. (2) Our total weighted average potentially dilutive shares and units outstanding for the years ended December 31 consisted of the following: 2018 2017 2016 Class A Units 8,446 8,607 8,775 Other limited partnership units 891 1,403 1,835 Equity awards 8,175 9,183 8,444 Prologis, L.P. 17,512 19,193 19,054 Common limited partnership units 8,431 5,935 6,223 Prologis, Inc. 25,943 25,128 25,277

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Financial Instruments and Fair Value Measurements	Derivative Financial Instruments In the normal course of business, our operations are exposed to market risks, including the effect of changes in foreign currency exchange rates and interest rates. We may enter into derivative financial instruments to offset these underlying market risks. See Note 2 for our derivative financial instruments policy. The following table presents the fair value of our derivative financial instruments recognized within Other Assets Other Liabilities 2018 2017 Asset Liability Asset Liability Undesignated derivatives Foreign currency contracts Forwards Brazilian real $ 80 $ - $ - $ - British pound sterling 2,266 324 2,440 8,103 Canadian dollar 3,336 53 - 1,698 Euro 7,895 1,922 2 14,234 Japanese yen 3,334 1,318 6,474 931 Mexican peso 159 - - - Interest rate swaps U.S. dollar 27 - - - Designated derivatives Foreign currency contracts Net investment hedges Brazilian real - 3,165 - - British pound sterling - 949 - - Canadian dollar 5,634 - - 7,263 Interest rate swaps Cash flow hedges Canadian dollar - - 10,223 - Euro - 428 - - Total fair value of derivatives $ 22,731 $ 8,159 $ 19,139 $ 32,229 Undesignated Derivative Financial Instruments Foreign Currency Contracts The following table summarizes the activity of our undesignated foreign currency contracts for the years ended December 31 (in millions, except for weighted average forward rates and number of active contracts): 2018 2017 2016 BRL CAD EUR GBP JPY Other CAD EUR GBP JPY EUR GBP JPY Other Notional amounts at January 1 $ - $ 56 $ 233 $ 132 $ 153 $ - $ 38 $ 197 $ 78 $ 144 $ 310 $ 148 $ 109 $ 50 New contracts 324 28 252 55 102 99 41 143 151 75 413 - 146 15 Matured, expired or settled contracts (319 ) (29 ) (171 ) (69 ) (78 ) (99 ) (23 ) (107 ) (97 ) (66 ) (526 ) (70 ) (111 ) (27 ) Notional amounts at December 31 $ 5 $ 55 $ 314 $ 118 $ 177 $ - $ 56 $ 233 $ 132 $ 153 $ 197 $ 78 $ 144 $ 38 Weighted average forward rate at December 31 3.74 1.28 1.21 1.32 105.17 - 1.29 1.17 1.29 106.25 1.13 1.54 107.68 - Active contracts at December 31 1 24 35 24 34 - 24 29 20 34 24 8 30 16 The following table summarizes the undesignated derivative financial instruments exercised and associated realized gains (losses) and unrealized gains (losses) in Foreign Currency and Derivative Gains (Losses), Net 2018 2017 2016 Exercised contracts 89 44 49 Realized gains (losses) on the matured, expired or settled contracts $ (3 ) $ 13 $ 3 Unrealized gains (losses) on the change in fair value of outstanding contracts $ 29 $ (51 ) $ 19 Designated Derivative Financial Instruments Foreign Currency Contracts The following table summarizes the activity of our foreign currency contracts designated as net investment hedges for the years ended December 31 2018 2017 2016 BRL CAD EUR GBP CAD GBP CAD GBP JPY Notional amounts at January 1 $ - $ 99 $ - $ - $ 100 $ 46 $ - $ 386 $ - New contracts 1,568 100 1,053 127 99 127 100 131 99 Matured, expired or settled contracts (1,108 ) (99 ) (1,053 ) - (100 ) (173 ) - (471 ) (99 ) Notional amounts at December 31 $ 460 $ 100 $ - $ 127 $ 99 $ - $ 100 $ 46 $ - Weighted average forward rate at December 31 3.91 1.28 - 1.28 1.34 - 1.33 1.51 - Active contracts at December 31 1 2 - 2 2 - 2 2 - Interest Rate Swaps The following table summarizes the activity of our interest rate swaps designated as cash flow hedges for the years ended December 31 2018 2017 2016 CAD EUR USD CAD CAD JPY Notional amounts at January 1 $ 271 $ - $ - $ 271 $ 271 $ 925 New contracts (1) - 500 300 - - - Matured, expired or settled contracts (2) (3) (271 ) - (300 ) - - (925 ) Notional amounts at December 31 $ - $ 500 $ - $ 271 $ 271 $ - (1) During 2018, we entered into two interest rate swap contracts with an aggregated notional amount of €400.0 million ( (2) During 2018, we repaid CAD 201.4 million ($158.9 million) on our 2015 Canadian Term Loan. At that time, we settled the interest rate swaps related to the 2015 Canadian Term Loan as we determined it was no longer probable that we would continue to have the future cash flows as originally hedged. As a result, the $12.5 million gain in AOCI/L Interest (3) During 2016, we entered into the 2016 Yen Term Loan and repaid our 2014, 2015 and 2016 Japanese yen term loans. At that time, we settled the outstanding contracts related to the previously outstanding term loans for $26.3 million. The fair value of the contracts that qualified for hedge accounting at the date of repayment was recorded to AOCI/L Interest Expense AOCI/L Ineffectiveness During the years ended December 31, 2018, 2017 and 2016, we had no losses due to hedge ineffectiveness. Designated Nonderivative Financial Instruments The following table summarizes our debt and accrued interest, designated as a hedge of our net investment in international subsidiaries at December 31 (in millions): 2018 2017 2016 British pound sterling $ 269 $ 436 $ - Euro $ 2,645 $ 3,620 $ 3,403 The following table summarizes the recognized unrealized gains (losses) in Foreign Currency and Derivative Gains (Losses), Net 2018 2017 Unrealized gains (losses) on the unhedged portion $ 96 $ (23 ) There were no unrealized gains or losses recognized during the year ended December 31, 2016. Other Comprehensive Income (Loss) The change in Other Comprehensive Income (Loss) Other Comprehensive Income (Loss). The following table presents these changes in Other Comprehensive Income (Loss) 2018 2017 2016 Derivative net investment hedges $ 26,457 $ (12,762 ) $ 55,460 Nonderivative net investment hedges 151,083 (477,755 ) 112,591 Cumulative translation adjustment (368,130 ) 553,972 (304,009 ) Total foreign currency translation gains (losses), net $ (190,590 ) $ 63,455 $ (135,958 ) Cash flow hedges (1) $ (5,815 ) $ 12,726 $ (551 ) Our share of derivatives from unconsolidated co-investment ventures 4,492 9,865 (798 ) Total unrealized gains (losses) on derivative contracts, net $ (1,323 ) $ 22,591 $ (1,349 ) Total change in other comprehensive income (loss) $ (191,913 ) $ 86,046 $ (137,307 ) (1) We estimate an additional expense of $4.2 million will be reclassified to Interest Expense Fair Value Measurements We have estimated the fair value of our financial instruments using available market information and valuation methodologies we believe to be appropriate for these purposes. Considerable judgment and a high degree of subjectivity are involved in developing these estimates and, accordingly, they are not necessarily indicative of amounts that we would realize on disposition. See Note 2 for more information on our fair value measurements policy. Fair Value Measurements on a Recurring Basis At December 31, 2018 and 2017, other than the derivatives discussed previously, we did not have any significant financial assets or financial liabilities that were measured at fair value on a recurring basis in the Consolidated Financial Statements. All of our derivatives held at December 31, 2018 and 2017, were classified as Level 2 of the fair value hierarchy. Fair Value Measurements on Nonrecurring Basis Acquired properties and assets we expect to sell or contribute met the criteria to be measured on a nonrecurring basis at fair value and the lower of their carrying amount or their estimated fair value less the costs to sell, respectively, at December 31, 2018 and 2017. At December 31, 2018 and 2017, we estimate the fair value of our properties using Level 2 or Level 3 inputs from the fair value hierarchy. See more information on our acquired properties and assets held for sale or contribution in Notes 3, 4 and 6, respectively. Fair Value of Financial Instruments At December 31, 2018 and 2017, the carrying amounts of certain financial instruments, including cash and cash equivalents, accounts and notes receivable, accounts payable and accrued expenses were representative of their fair values. The differences in the fair value of our debt from the carrying value in the table below were the result of differences in interest rates or borrowing spreads that were available to us at December 31, 2018 and 2017, as compared with those in effect when the debt was issued or assumed, including reduced borrowing spreads due to our improved credit ratings. The senior notes and many of the issuances of secured mortgage debt contain pre-payment penalties or yield maintenance provisions that could make the cost of refinancing the debt at lower rates exceed the benefit that would be derived from doing so. The following table reflects the carrying amounts and estimated fair values of our debt at December 31 (in thousands): 2018 2017 Carrying Value Fair Value Carrying Value Fair Value Credit Facilities $ 50,500 $ 50,513 $ 317,392 $ 317,496 Senior notes 8,304,147 8,606,864 6,067,277 6,537,100 Term loans and unsecured other 1,921,428 1,946,335 2,060,491 2,075,002 Secured mortgage 813,740 849,417 967,471 1,026,197 Total $ 11,089,815 $ 11,453,129 $ 9,412,631 $ 9,955,795

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Environmental Matters A majority of the properties we acquire, including land, are subjected to environmental reviews either by us or the previous owners. In addition, we may incur environmental remediation costs associated with certain land parcels we acquire in connection with the development of the land. We have acquired certain properties that may have been leased to or previously owned by companies that discharged hazardous materials. We establish a liability at the time of acquisition to cover such costs and adjust the liabilities as appropriate when additional information becomes available. We record our environmental liabilities in Other Liabilities Indemnification Agreements We may enter into agreements whereby we indemnify certain co-investment ventures, or our venture partners, outside of the U.S. for taxes that may be assessed with respect to certain properties we contributed to these ventures. Our contributions to these ventures are generally structured as contributions of shares of companies that own the real estate assets. Accordingly, the capital gains associated with the step up in the value of the underlying real estate assets, for tax purposes, are deferred and transferred at contribution. We have generally indemnified these ventures to the extent that the ventures: (i) incur capital gains or withholding tax as a result of a direct sale of the real estate asset, as opposed to a transaction in which the shares of the company owning the real estate asset are transferred or sold or (ii) are required to grant a discount to the buyer of shares under a share transfer transaction as a result of the ventures transferring the embedded capital gain tax liability to the buyer of the shares in the transaction. The agreements limit the amount that is subject to our indemnification with respect to each property to 100% of the actual tax liabilities related to the capital gains that are deferred and transferred by us to the ventures at the time of the initial contribution less any deferred tax assets transferred with the property. The outcome under these agreements is uncertain as it depends on the method and timing of dissolution of the related venture or disposition of any properties by the venture. We record liabilities related to the indemnification agreements in Other Liabilities Off-Balance Sheet Liabilities We have issued performance and surety bonds and standby letters of credit in connection with certain development projects. Performance and surety bonds are commonly required by public agencies from real estate developers. Performance and surety bonds are renewable and expire on the completion of the improvements and infrastructure. At December 31, 2018 and 2017, we had $212.6 million and $178.4 million, respectively, outstanding under such arrangements. We may be required under capital commitments or we may choose to make additional capital contributions to certain of our unconsolidated entities, representing our proportionate ownership interest, should additional capital contributions be necessary to fund development or acquisition costs, repayment of debt or operational shortfalls. See Note 5 for further discussion related to equity commitments to our unconsolidated co-investment ventures. Litigation From time to time, we are party to a variety of legal proceedings arising in the ordinary course of business. We believe that, with respect to any such matters that we are currently a party to, the ultimate disposition of any such matter will not have material adverse effect on our business, financial position or results of operations.

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Business Segments	Our current business strategy includes two operating segments: Real Estate Operations and Strategic Capital. We generate revenues, earnings, net operating income and cash flows through our segments, as follows: • Real Estate Operations. This operating segment represents the ownership and development of operating properties and is the largest component of our revenues and earnings. We collect rent from our customers through operating leases, including reimbursements for the majority of our property operating costs. Each operating property is considered to be an individual operating segment with similar economic characteristics; these properties are combined within the reportable business segment based on geographic location. Our Real Estate Operations segment also includes development activities that lead to rental operations, including land held for development and properties currently under development. Within this line of business, we utilize the following: (i) our land bank; (ii) the development expertise of our local teams; and (iii) our customer relationships. Land we own and lease to customers under ground leases is also included in this segment. • Strategic Capital. This operating segment represents the management of unconsolidated co-investment ventures. We generate strategic capital revenues primarily from our unconsolidated co-investment ventures through asset management and property management services and we earn additional revenues by providing leasing, acquisition, construction, development, financing and disposition services. Depending on the structure of the venture and the returns provided to our partners, we also earn revenues through promotes periodically during the life of a venture or upon liquidation. Each unconsolidated co-investment venture we manage is considered to be an individual operating segment with similar economic characteristics; these ventures are combined within the reportable business segment based on geographic location. Reconciliations are presented below for: (i) each reportable business segment’s revenues from external customers to Total Revenues Operating Income Earnings Before Income Taxes Total Assets Total Revenues, Operating Income, Earnings Before Income Taxes Total Assets Years Ended December 31, 2018 2017 2016 Revenues: Real estate operations segment: U.S. $ 2,173,279 $ 2,025,184 $ 2,040,308 Other Americas 119,954 84,789 58,519 Europe 54,405 73,708 75,602 Asia 50,511 60,564 55,144 Total real estate operations segment 2,398,149 2,244,245 2,229,573 Strategic capital segment: U.S. 74,618 176,720 39,360 Other Americas 32,434 28,494 22,799 Europe 174,898 106,862 186,652 Asia 124,350 61,813 54,751 Total strategic capital segment 406,300 373,889 303,562 Total revenues 2,804,449 2,618,134 2,533,135 Segment net operating income: Real estate operations segment: U.S. (1) 1,621,665 1,519,164 1,520,571 Other Americas 89,044 58,842 38,114 Europe 34,807 51,277 54,406 Asia 38,425 33,234 33,283 Total real estate operations segment 1,783,941 1,662,517 1,646,374 Strategic capital segment: U.S. (1) 4,712 106,471 (1,622 ) Other Americas 19,874 16,811 12,777 Europe 136,240 68,127 144,132 Asia 88,434 27,339 19,769 Total strategic capital segment 249,260 218,748 175,056 Total segment net operating income 2,033,201 1,881,265 1,821,430 Reconciling items: General and administrative expenses 238,985 231,059 222,067 Depreciation and amortization expenses 947,214 879,140 930,985 Operating income 847,002 771,066 668,378 Earnings from unconsolidated entities, net 298,260 248,567 206,307 Interest expense (229,141 ) (274,486 ) (303,146 ) Interest and other income, net 14,663 13,731 8,101 Gains on real estate transactions, net 840,996 1,182,965 757,398 Foreign currency and derivative gains (losses), net 117,096 (57,896 ) 7,582 Gains (losses) on early extinguishment of debt, net (2,586 ) (68,379 ) 2,484 Earnings before income taxes $ 1,886,290 $ 1,815,568 $ 1,347,104 December 31, 2018 2017 Segment assets: Real estate operations segment: U.S. $ 27,666,200 $ 19,058,610 Other Americas 1,712,862 1,767,385 Europe 1,040,061 1,008,340 Asia 1,012,253 1,083,764 Total real estate operations segment 31,431,376 22,918,099 Strategic capital segment (2): U.S. 15,802 16,818 Europe 25,280 25,280 Asia 455 544 Total strategic capital segment 41,537 42,642 Total segment assets 31,472,913 22,960,741 Reconciling items: Investments in and advances to unconsolidated entities 5,745,294 5,496,450 Assets held for sale or contribution 622,288 342,060 Notes receivable backed by real estate - 34,260 Cash and cash equivalents 343,856 447,046 Other assets 233,313 200,518 Total reconciling items 6,944,751 6,520,334 Total assets $ 38,417,664 $ 29,481,075 (1) This includes compensation and personnel costs for employees who were located in the U.S. but also support other regions. (2) Represents management contracts and goodwill recorded in connection with business combinations associated with the Strategic Capital segment. Goodwill was $25.3 million at December 31, 2018 and 2017.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Our significant noncash investing and financing activities for the years ended December 31, 2018, 2017 and 2016 included the following: • We completed the DCT Transaction on August 22, 2018 for $8.5 billion through the issuance of equity and the assumption of debt. See Note 3 for more information on this transaction. • We capitalized $26.4 million, $28.8 million and $25.8 million in 2018, 2017 and 2016, respectively, of equity-based compensation expense resulting from our development and leasing activities. • We received $386.7 million, $153.3 million and $135.3 million of ownership interests in certain unconsolidated co-investment ventures as a portion of our proceeds from the contribution of properties to these entities during 2018, 2017 and 2016, respectively, as disclosed in Note 5. • We formed a consolidated venture into which our partner contributed $11.8 million of land in 2018. • We issued 1.5 million shares and 1.9 million shares in 2017 and 2016, respectively, of the Parent’s common stock upon redemption of an equal number of common limited partnership units in the OP. • We received $53.8 million of notes receivable backed by real estate in exchange for the disposition of real estate in 2017. • We contributed operating properties owned by NAIF to USLF in 2017. As a result, we received $1.1 billion of units or ownership interest in USLF as a portion of our proceeds from this contribution. In addition, USLF acquired the $19.5 million note receivable backed by real estate we received in 2017 and assumed $956.0 million of secured mortgage debt.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	The following table details our selected quarterly financial data (in thousands, except per share and unit data): Three Months Ended, Prologis, Inc. March 31, June 30, September 30, December 31, 2018: Rental revenues $ 427,901 $ 426,549 $ 476,865 $ 527,574 Rental recoveries $ 128,042 $ 118,130 $ 132,109 $ 151,621 Total revenues $ 693,656 $ 621,276 $ 682,432 $ 807,085 Rental expenses $ (142,941 ) $ (133,329 ) $ (147,184 ) $ (177,194 ) Operating income $ 237,107 $ 187,294 $ 181,521 $ 241,080 Consolidated net earnings $ 391,959 $ 364,991 $ 375,520 $ 690,490 Net earnings attributable to common stockholders $ 365,902 $ 334,611 $ 346,345 $ 596,568 Net earnings per share attributable to common stockholders – Basic (1) $ 0.69 $ 0.63 $ 0.60 $ 0.95 Net earnings per share attributable to common stockholders – Diluted (1) (2) $ 0.68 $ 0.62 $ 0.60 $ 0.94 2017: Rental revenues $ 439,884 $ 447,960 $ 416,427 $ 433,568 Rental recoveries $ 127,049 $ 128,417 $ 114,755 $ 117,081 Total revenues $ 629,155 $ 766,183 $ 602,874 $ 619,922 Rental expenses $ (152,656 ) $ (147,794 ) $ (128,735 ) $ (140,338 ) Operating income $ 161,886 $ 275,272 $ 175,491 $ 158,417 Consolidated net earnings $ 220,689 $ 287,980 $ 913,417 $ 338,873 Net earnings attributable to common stockholders $ 203,255 $ 266,943 $ 876,218 $ 295,515 Net earnings per share attributable to common stockholders – Basic (1) $ 0.38 $ 0.50 $ 1.65 $ 0.56 Net earnings per share attributable to common stockholders – Diluted (1) (2) $ 0.38 $ 0.50 $ 1.63 $ 0.55 Prologis, L.P. 2018: Rental revenues $ 427,901 $ 426,549 $ 476,865 $ 527,574 Rental recoveries $ 128,042 $ 118,130 $ 132,109 $ 151,621 Total revenues $ 693,656 $ 621,276 $ 682,432 $ 807,085 Rental expenses $ (142,941 ) $ (133,329 ) $ (147,184 ) $ (177,194 ) Operating income $ 237,107 $ 187,294 $ 181,521 $ 241,080 Consolidated net earnings $ 391,959 $ 364,991 $ 375,520 $ 690,490 Net earnings attributable to common unitholders $ 376,425 $ 344,633 $ 356,765 $ 614,490 Net earnings per unit attributable to common unitholders – Basic (1) $ 0.69 $ 0.63 $ 0.60 $ 0.95 Net earnings per unit attributable to common unitholders – Diluted (1) (2) $ 0.68 $ 0.62 $ 0.60 $ 0.94 2017: Rental revenues $ 439,884 $ 447,960 $ 416,427 $ 433,568 Rental recoveries $ 127,049 $ 128,417 $ 114,755 $ 117,081 Total revenues $ 629,155 $ 766,183 $ 602,874 $ 619,922 Rental expenses $ (152,656 ) $ (147,794 ) $ (128,735 ) $ (140,338 ) Operating income $ 161,886 $ 275,272 $ 175,491 $ 158,417 Consolidated net earnings $ 220,689 $ 287,980 $ 913,417 $ 338,873 Net earnings attributable to common unitholders $ 208,878 $ 274,320 $ 900,331 $ 303,416 Net earnings per unit attributable to common unitholders – Basic (1) $ 0.38 $ 0.50 $ 1.65 $ 0.56 Net earnings per unit attributable to common unitholders – Diluted (1) (2) $ 0.38 $ 0.50 $ 1.63 $ 0.55 (1) Quarterly earnings per common share or unit amounts may not total to the annual amounts due to rounding and the changes in the number of weighted average common shares or units outstanding included in the calculation of basic and diluted shares or units. (2) Income allocated to the exchangeable OP units not held by the Parent has been included in the numerator and exchangeable OP units have been included in the denominator for the purpose of computing diluted earnings per share for all periods since the per share and unit is the same.

Real Estate and Accumulated Dep

Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2018
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Real Estate and Accumulated Depreciation	PROLOGIS, INC. AND PROLOGIS, L.P. DECEMBER 31, 2018 (In thousands of U.S. dollars, as applicable) Initial Cost to Prologis Costs Capitalized Gross Amounts at Which Carried at December 31, 2018 Description No. of Bldgs. Encum- brances Land Building & Improvements Subsequent to Acquisition Land Building & Improvements Total (a,b) Accumulated Depreciation (c) Date of Construction/ Acquisition Operating Properties (d) U.S. Markets Atlanta 104 (d) 222,503 888,970 231,746 223,511 1,119,708 1,343,219 (180,067 ) 1994-2018 Austin 10 12,783 52,335 5,857 12,837 58,138 70,975 (20,935 ) 1994-2015 Baltimore/Washington D.C. 52 (d) 136,540 405,342 100,977 137,506 505,353 642,859 (90,071 ) 1995-2018 Central and Eastern Pennsylvania 42 252,910 843,408 170,423 256,884 1,009,857 1,266,741 (160,081 ) 2002-2018 Central Valley 28 (d) 144,651 386,853 443,563 155,518 819,549 975,067 (123,925 ) 1999-2018 Charlotte 16 (d) 15,202 32,889 58,907 17,465 89,533 106,998 (37,484 ) 1994-2015 Chicago 176 (d) 557,482 1,836,175 297,389 570,289 2,120,757 2,691,046 (451,793 ) 1995-2018 Cincinnati 27 (d) 41,002 181,564 64,238 43,226 243,578 286,804 (38,851 ) 1996-2018 Columbus 18 (d) 24,685 116,621 49,173 25,078 165,401 190,479 (65,578 ) 1996-2015 Dallas/Fort Worth 130 (d) 250,669 996,978 297,481 255,128 1,290,000 1,545,128 (276,508 ) 1994-2018 Denver 33 (d) 85,275 295,412 79,889 83,610 376,966 460,576 (92,381 ) 1993-2018 Houston 103 (d) 168,410 696,672 129,473 168,477 826,078 994,555 (135,283 ) 1993-2018 Indianapolis 19 (d) 15,970 85,015 39,181 15,970 124,196 140,166 (41,477 ) 1995-2018 Jacksonville 1 - 2,892 257 - 3,149 3,149 (1,950 ) 2011 Kansas City 2 - 14,411 164 - 14,575 14,575 (8,137 ) 2011 Las Vegas 49 (d) 111,489 270,443 135,626 105,980 411,578 517,558 (62,436 ) 1996-2017 Louisville 11 42,979 226,263 36,679 43,285 262,636 305,921 (54,823 ) 2005-2015 Nashville 21 60,581 264,972 42,079 62,170 305,462 367,632 (34,467 ) 1995-2018 New Jersey/New York City 108 (d) 875,466 1,505,680 485,999 876,393 1,990,752 2,867,145 (431,538 ) 1996-2018 Orlando 48 82,256 320,781 60,495 82,683 380,849 463,532 (60,061 ) 1994-2018 Phoenix 31 54,079 188,727 48,885 54,070 237,621 291,691 (45,022 ) 1992-2018 Portland 17 (d)(e) 36,733 100,728 18,085 35,396 120,150 155,546 (24,749 ) 2006-2018 Reno 17 (d) 23,919 143,324 84,636 25,393 226,486 251,879 (60,116 ) 1994-2015 San Antonio 20 (d) 25,735 95,828 38,938 25,958 134,543 160,501 (46,024 ) 1994-2016 San Francisco Bay Area 208 (d) 802,386 1,513,171 294,059 807,623 1,801,993 2,609,616 (505,996 ) 1993-2018 Savannah 1 2,161 14,680 1,462 2,161 16,142 18,303 (3,921 ) 2011 Seattle 83 (d)(e) 533,163 960,214 140,698 553,190 1,080,885 1,634,075 (133,022 ) 2008-2018 South Florida 96 (d) 352,027 778,818 162,149 356,442 936,552 1,292,994 (183,113 ) 1994-2018 Southern California 309 (d)(e) 2,477,437 3,825,024 803,913 2,553,245 4,553,129 7,106,374 (997,117 ) 2005-2018 Subtotal U.S. Markets: 1,780 7,408,493 17,044,190 4,322,421 7,549,488 21,225,616 28,775,104 (4,366,926 ) Other Americas Markets Brazil 14 129,566 273,445 31,155 119,552 314,614 434,166 (9,799 ) 2017 Canada 31 (d) 197,503 363,279 158,973 201,955 517,800 719,755 (89,382 ) 2008-2018 Mexico 7 70,233 2,287 86,131 74,417 84,234 158,651 (1,344 ) 2011-2018 Subtotal Other Americas Markets: 52 397,302 639,011 276,259 395,924 916,648 1,312,572 (100,525 ) Europe Markets France 2 4,854 - 24,863 3,855 25,862 29,717 (2,295 ) 2012-2018 Germany 2 10,638 5,522 604 10,638 6,126 16,764 (3,343 ) 2011 Spain 5 7,044 37,040 13,634 6,825 50,893 57,718 (11,795 ) 2011-2017 Sweden 2 1,047 1,544 45,917 13,770 34,738 48,508 (9,969 ) 2011-2017 U.K. 7 28,504 23,422 14,575 28,660 37,841 66,501 (515 ) 2016-2018 Subtotal Europe Markets: 18 52,087 67,528 99,593 63,748 155,460 219,208 (27,917 ) Asia Markets China 2 1,395 8,457 136 1,202 8,786 9,988 (2,107 ) 2011 Japan 1 33,450 - 143,495 34,526 142,419 176,945 (6,190 ) 2016 Singapore 5 - 135,475 2,863 - 138,338 138,338 (47,293 ) 2011 Subtotal Asia Markets: 8 34,845 143,932 146,494 35,728 289,543 325,271 (55,590 ) Total Operating Properties 1,858 7,892,727 17,894,661 4,844,767 8,044,888 22,587,267 30,632,155 (4,550,958 ) PROLOGIS, INC. AND PROLOGIS, L.P. SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION DECEMBER 31, 2018 (In thousands of U.S. dollars, as applicable) Initial Cost to Prologis Costs Capitalized Gross Amounts at Which Carried at December 31, 2018 Date of Description No. of Bldgs. Encum- brances Land Building & Improvements Subsequent to Acquisition Land Building & Improvements Total (a,b) Accumulated Depreciation (c) Construction/ Acquisition (f) Development Portfolio (d) U.S. Markets Atlanta 1 3,927 14,240 10,927 3,927 25,167 29,094 Baltimore/Washington D.C. 2 7,893 - 31,726 7,893 31,726 39,619 Central Valley 3 6,483 - 58,845 6,483 58,845 65,328 2018 Chicago 6 42,852 9,201 48,107 42,852 57,308 100,160 2018 Cincinnati 2 6,006 119 26,199 6,006 26,318 32,324 Dallas/Fort Worth 4 7,371 - 17,097 7,371 17,097 24,468 2018 Denver 3 17,555 - 31,795 17,555 31,795 49,350 2018 Indianapolis 1 418 - 6,871 418 6,871 7,289 2018 Las Vegas 5 15,681 - 38,066 15,681 38,066 53,747 2018 Nashville 1 5,668 - 13,523 5,668 13,523 19,191 New Jersey/New York City 2 58,001 - 32,426 58,001 32,426 90,427 Orlando 1 1,116 6,326 414 1,116 6,740 7,856 2018 Phoenix 4 15,053 - 20,019 15,053 20,019 35,072 San Francisco Bay Area 4 32,744 7,532 19,494 32,744 27,026 59,770 Seattle 4 70,233 28,431 130,994 70,233 159,425 229,658 2018 South Florida 4 20,712 - 42,962 20,712 42,962 63,674 2018 Southern California 13 97,501 5,143 88,553 97,501 93,696 191,197 2018 Subtotal U.S. Markets: 60 409,214 70,992 618,018 409,214 689,010 1,098,224 Other Americas Markets Canada 1 17,257 - 24,230 17,257 24,230 41,487 Mexico 4 38,521 - 28,193 38,521 28,193 66,714 2018 Subtotal Other Americas Market: 5 55,778 - 52,423 55,778 52,423 108,201 Europe Markets Czech Republic 3 15,667 - 32,204 15,667 32,204 47,871 2018 France 4 9,424 - 23,943 9,424 23,943 33,367 Germany 4 41,530 - 103,331 41,530 103,331 144,861 2018 Italy 4 13,847 - 4,311 13,847 4,311 18,158 Netherlands 5 39,188 - 44,014 39,188 44,014 83,202 Poland 2 3,275 - 13,097 3,275 13,097 16,372 2018 Slovakia 3 5,318 - 11,295 5,318 11,295 16,613 2018 Spain 2 16,050 - 10,908 16,050 10,908 26,958 2018 Sweden 1 4,356 - 17,064 4,356 17,064 21,420 U.K. 1 6,199 - 11,878 6,199 11,878 18,077 2018 Subtotal Europe Markets: 29 154,854 - 272,045 154,854 272,045 426,899 Asia Markets Japan 6 (d) 141,283 - 368,194 141,283 368,194 509,477 2018 Subtotal Asia Markets: 6 141,283 - 368,194 141,283 368,194 509,477 Total Development Portfolio 100 761,129 70,992 1,310,680 761,129 1,381,672 2,142,801 GRAND TOTAL 1,958 8,653,856 17,965,653 6,155,447 8,806,017 23,968,939 32,774,956 (4,550,958 ) Schedule III – Footnotes (a) The following table reconciles real estate assets per Schedule III to the Consolidated Balance Sheets in Item 8. Financial Statements and Supplementary Data at December 31, 2018 (in thousands): Total per Schedule III $ 32,774,956 (g) Land 1,192,220 Other real estate investments 619,811 Total per Consolidated Balance Sheets $ 34,586,987 (b) The aggregate cost for federal tax purposes at December 31, 2018, of our real estate assets was approximately $24.0 billion (unaudited). (c) Real estate assets (excluding land balances) are depreciated over their estimated useful lives. These useful lives are generally 5 to 7 years for capital improvements, 10 years for standard tenant improvements, 25 years for depreciable land improvements, 30 years for operating properties acquired and 40 years for operating properties we develop. The following table reconciles accumulated depreciation per Schedule III to the Consolidated Balance Sheets in Item 8. Financial Statements and Supplementary Data at December 31, 2018 (in thousands): Total accumulated depreciation per Schedule III $ 4,550,958 (g) Accumulated depreciation on other real estate investments 105,722 Total per Consolidated Balance Sheets $ 4,656,680 (d) Properties with an aggregate undepreciated cost of $2.2 billion secure $774.6 million of mortgage notes. See Note 8 to the Consolidated Financial Statements in Item 8. Financial Statements and Supplementary Data for more information related to our secured mortgage debt. (e) Assessment bonds of $12.6 million are secured by assessments (similar to property taxes) on various underlying real estate properties with an aggregate undepreciated cost of $1.0 billion. The assessment bonds are included in term loans and unsecured other debt in Note 8 to the Consolidated Financial Statements in Item 8. Financial Statements and Supplementary Data. (f) Date of construction is provided for properties in the development portfolio that were completed but not yet stabilized. (g ) The following table summarizes our real estate assets and accumulated depreciation for the years ended December 31 (in thousands): 2018 2017 2016 Real estate assets: Balance at beginning of year $ 24,178,816 $ 25,375,539 $ 25,608,648 Acquisitions of and improvements to operating properties and development activity, and net effect of changes in foreign exchange rates and other 10,106,651 2,680,484 1,883,888 Basis of operating properties disposed of (1,461,458 ) (3,697,798 ) (1,359,186 ) Change in the development portfolio balance, including the acquisition of properties 549,312 161,408 (440,821 ) Assets transferred to held for sale (598,365 ) (340,817 ) (316,990 ) Balance at end year $ 32,774,956 $ 24,178,816 $ 25,375,539 Accumulated depreciation: Balance at beginning of year $ 3,971,501 $ 3,679,479 $ 3,207,855 Depreciation expense 703,215 614,756 668,686 Balances retired upon disposition of operating properties and net effect of changes in foreign exchange rates and other (119,029 ) (313,584 ) (195,895 ) Assets transferred to held for sale (4,729 ) (9,150 ) (1,167 ) Balance at end of year $ 4,550,958 $ 3,971,501 $ 3,679,479

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation. The accompanying Consolidated Financial Statements are prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) and are presented in our reporting currency, the U.S. dollar. All material intercompany transactions with consolidated entities have been eliminated.
Consolidation	Consolidation. We consolidate all entities that are wholly owned and those in which we own less than 100% of the equity but control, as well as any variable interest entities (“VIEs”) in which we are the primary beneficiary. We evaluate our ability to control an entity and whether the entity is a VIE and we are the primary beneficiary through consideration of substantive terms of the arrangement to identify which enterprise has the power to direct the activities of the entity that most significantly impacts the entity’s economic performance and the obligation to absorb losses and the right to receive benefits from the entity. For entities that are not defined as VIEs, we first consider whether we are the general partner or the limited partner (or the equivalent in such investments that are not structured as partnerships). We consolidate entities in which we are the general partner and the limited partners in such entities that do not have rights that would preclude control. For entities in which we are the general partner but do not control the entity as the other partners hold substantive participating or kick-out rights, we apply the equity method of accounting since, as the general partner, we have the ability to exercise significant influence over the operating and financial policies of the venture. For ventures for which we are a limited partner or our investment is in an entity that is not structured similar to a partnership, we consider factors such as ownership interest, voting control, authority to make decisions and contractual and substantive participating rights of the partners. In instances where the factors indicate that we have a controlling financial interest in the venture, we consolidate the entity.
Reclassifications	Reclassifications. Certain amounts included in the Consolidated Financial Statements for 2016 have been reclassified to conform to the 2018 financial statement presentation.
Use of Estimates	Use of Estimates. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the reporting period. Although we believe the assumptions and estimates we made are reasonable and appropriate, as discussed in the applicable sections throughout the Consolidated Financial Statements, different assumptions and estimates could materially impact our reported results.
Foreign Operations	Foreign Operations. The U.S. dollar is the functional currency for our consolidated subsidiaries and unconsolidated entities operating in the U.S. and Mexico and certain of our consolidated subsidiaries that operate as holding companies for foreign investments. The functional currency for our consolidated subsidiaries and unconsolidated entities operating in other countries is the principal currency in which the entity’s assets, liabilities, income and expenses are denominated, which may be different from the local currency of the country of incorporation or where the entity conducts its operations. The functional currencies of entities outside of the U.S. and Mexico generally include the Brazilian real, British pound sterling, Canadian dollar, Chinese yuan, euro, Japanese yen and Singapore dollar. We take part in business transactions denominated in these and other local currencies where we operate. For our consolidated subsidiaries whose functional currency is not the U.S. dollar, we translate their financial statements into the U.S. dollar at the time we consolidate those subsidiaries’ financial statements. Generally, assets and liabilities are translated at the exchange rate in effect at the balance sheet date. The resulting translation adjustments are included in Accumulated Other Comprehensive Income (Loss) AOCI/L We and certain of our consolidated subsidiaries have intercompany and third-party debt that is not denominated in the entity’s functional currency. When the debt is remeasured against the functional currency of the entity, a gain or loss can result. The resulting adjustment is reflected in Foreign Currency and Derivative Gains (Losses), Net AOCI/L
Acquisitions	Acquisitions. We apply a screen test to evaluate if substantially all the fair value of the acquired property is concentrated in a single identifiable asset or group of similar identifiable assets to determine whether a transaction is accounted for as an asset acquisition or business combination. As most of our real estate acquisitions are concentrated in either a single or a group of similar identifiable assets, our real estate transactions are generally accounted for as asset acquisitions, which permits the capitalization of transaction costs to the basis of the acquired property. The transaction costs related to the formation of equity method investments are also capitalized. For acquisitions prior to January 1, 2017 and those subsequently accounted for as a business combination, transaction costs were expensed as incurred. For asset acquisitions, the purchase price is allocated to the various components acquired, including an allocation to the individual buildings, land and lease intangibles on a relative fair value basis. Other monetary assets acquired and liabilities assumed, including debt, are recorded at fair value. Purchase price allocations for a business combination are recorded at fair value. When we obtain control of an unconsolidated entity and the acquisition qualifies as a business combination, we account for the acquisition in accordance with the guidance for a business combination achieved in stages. We remeasure our previously held interest in the unconsolidated entity at its acquisition-date fair value and recognize any resulting gain or loss in earnings. We allocate the purchase price using primarily Level 2 and Level 3 inputs (further defined in Fair Value Measurements below) as follows: Investments in Real Estate Properties. We value operating properties as if vacant. We estimate fair value by applying an income approach methodology using either a discounted cash flow analysis or applying a capitalization rate to the estimated NOI of a property. Key assumptions include market rents, growth rates, and discount and capitalization rates. Estimates of future cash flows are based on a number of factors including historical operating results, known trends and market and economic conditions. We determine the discount or capitalization rate by market based on recent transactions and other market data. The fair value of land is generally based on relevant market data, such as a comparison of the subject site to similar parcels that have recently been sold or are currently being offered on the market for sale. Lease Intangibles . We determine the portion of the purchase price related to intangible assets and liabilities as follows: • Above and Below Market Leases . We recognize an asset or liability for acquired in-place leases with favorable or unfavorable rents based on our estimate of current market rents of the applicable markets. The value is recorded in either or , as appropriate, and is amortized over the term of the respective leases, including any bargain renewal options, to rental revenues. • Foregone Rent . We calculate the value of the revenue and recovery of costs foregone during a reasonable lease-up period, as if the space was vacant, in each of the applicable markets. The values are recorded in and amortized over the remaining life of the respective leases to amortization expense. • Leasing Commissions. We recognize an asset for leasing commissions upon the acquisition of in-place leases based on our estimate of the cost to lease space in the applicable markets. The value is recorded in and amortized over the remaining life of the respective leases to amortization expense. Debt . We estimate the fair value of debt based on contractual future cash flows discounted using borrowing spreads and market interest rates that would be available to us for the issuance of debt with similar terms and remaining maturities. In the case of publicly traded debt, we estimate the fair value based on available market data. Any discount or premium to the principal amount is included in the carrying value and amortized to interest expense over the remaining term of the related debt using the effective interest method. Noncontrolling Interests . We estimate the portion of the fair value of the net assets owned by third parties based on the fair value of the consolidated net assets, principally real estate properties and debt. Working Capital . We estimate the fair value of other acquired assets and assumed liabilities on the best information available.
Fair Value Measurements	Fair Value Measurements. The objective of fair value is to determine the price that would be received on the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). We estimate fair value using available market information and valuation methodologies we believe to be appropriate for these purposes. Considerable judgment and a high degree of subjectivity are involved in developing these estimates and, accordingly, they are not necessarily indicative of amounts that we would realize on disposition. The fair value hierarchy consists of three broad levels: • Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date. • Level 2 — Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. • Level 3 — Unobservable inputs for the asset or liability. Fair Value Measurements on a Recurring Basis. We estimate the fair value of our financial instruments using available market information and valuation methodologies we believe to be appropriate for these purposes. We determine the fair value of our derivative financial instruments using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, foreign exchange rates and implied volatilities. We determine the fair values of our interest rate swaps using the market standard methodology of netting the discounted future fixed cash receipts or payments and the discounted expected variable cash payments. We base the variable cash payments on an expectation of future interest rates, or forward curves, derived from observable market interest rate curves. We base the fair values of our net investment hedges on the change in the spot rate at the end of the period as compared with the strike price at inception. We incorporate credit valuation adjustments to appropriately reflect nonperformance risk for us and the respective counterparty in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. We have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy. Although the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties, we assess the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. Fair Value Measurements on a Nonrecurring Basis. Assets measured at fair value on a nonrecurring basis generally consist of real estate assets and investments in unconsolidated entities that were subject to impairment charges related to our change of intent to sell the investments and through our recoverability analysis discussed below. We estimate fair value based on expected sales prices in the market (Level 2) or by applying the income approach methodology using a discounted cash flow analysis (Level 3). Fair Value of Financial Instruments. We estimate the fair value of our senior notes for disclosure purposes based on quoted market prices for the same (Level 1) or similar (Level 2) issues when current quoted market prices are available. We estimate the fair value of our credit facilities, term loans, secured mortgage debt and assessment bonds by discounting the future cash flows using rates and borrowing spreads currently available to us (Level 3).
Real Estate Assets	Real Estate Assets. Real estate assets are carried at depreciated cost. We capitalize costs incurred in developing, renovating, rehabilitating and improving real estate assets as part of the investment basis. We expense costs for repairs and maintenance as incurred. Depreciation and Amortization. We charge the depreciable portions of real estate assets to depreciation expense on a straight-line basis over the respective estimated useful lives. Depreciation on development buildings commences when the asset is ready for its intended use, which we define as the earlier of stabilization (90% occupied) or one year after completion of construction. We generally use the following useful lives: 5 to 7 years for capital improvements, 10 years for standard tenant improvements, 25 years for depreciable land improvements, 30 years for operating properties acquired and 40 years Capitalization of Costs. During the land development and construction periods of qualifying projects, we capitalize interest costs, insurance, real estate taxes and general and administrative costs of the personnel performing the development, renovation and rehabilitation; if such costs are incremental and identifiable to a specific activity to ready the asset for its intended use. We capitalize transaction costs related to the acquisition of land for future development and operating properties that qualify as asset acquisitions. We capitalize costs incurred to successfully originate a lease that result directly from and are essential to acquire that lease, including internal costs that are incremental and identifiable as leasing activities. Leasing costs that meet the requirements for capitalization are presented as a component of and all other capitalized costs are included in the investment basis of the real estate assets. Beginning January 1, 2019, we will no longer capitalize internal leasing costs. Recoverability of Real Estate Assets. We assess the carrying values of our respective real estate assets, whenever events or changes in circumstances indicate that the carrying amounts of these assets may not be fully recoverable. We measure the recoverability of the asset by comparing the carrying amount of the asset to the estimated future undiscounted cash flows. If our analysis indicates that the carrying value of the real estate property is not recoverable on an undiscounted cash flow basis, we recognize an impairment charge for the amount by which the carrying value exceeds the current estimated fair value of the real estate property. We estimate the future undiscounted cash flows and fair value based on our intent as follows: • for real estate properties that we intend to hold long-term; including land held for development, properties currently under development and operating properties; recoverability is assessed based on the estimated undiscounted future net rental income from operating the property and the terminal value, including anticipated costs to develop; • for real estate properties we intend to sell, including properties currently under development and operating properties; recoverability is assessed based on proceeds from disposition that are estimated based on future net rental income of the property, expected market capitalization rates and anticipated costs to develop; • for land parcels we intend to sell, recoverability is assessed based on estimated proceeds from disposition; and • for costs incurred related to the potential acquisition of land, operating properties or development of a real estate property, recoverability is assessed based on the probability that the acquisition or development is likely to occur at the measurement date.
Assets Held for Sale or Contribution	Assets Held for Sale or Contribution. We classify a property as held for sale or contribution when certain criteria are met in accordance with GAAP. Assets classified as held for sale are expected to be sold to a third party and assets classified as held for contribution are newly developed assets we intend to contribute to an unconsolidated co-investment venture or to a third party within twelve months. At such time, the respective assets and liabilities are presented separately in the Consolidated Balance Sheets and depreciation is no longer recognized. Assets held for sale or contribution are reported at the lower of their carrying amount or their estimated fair value less the costs to sell.
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities. We present our investments in certain entities under the equity method. We use the equity method when we have the ability to exercise significant influence over operating and financial policies of the venture but do not have control of the entity. Under the equity method, we initially recognize these investments (including advances) in the balance sheet at our cost, including formation costs and net of deferred gains from the contribution of properties, if applicable. We subsequently adjust the accounts to reflect our proportionate share of net earnings or losses recognized and accumulated other comprehensive income or loss, distributions received, contributions made and certain other adjustments, as appropriate. When circumstances indicate there may have been a reduction in the value of an equity investment, we evaluate whether the loss in value is other than temporary. If we conclude it is other than temporary, we recognize an impairment charge to reflect the equity investment at fair value. With regard to distributions from unconsolidated entities, we have elected the nature of distribution approach as the information is available to us to determine the nature of the underlying activity that generated the distributions. In accordance with the nature of distribution approach, cash flows generated from the operations of an unconsolidated entity are classified as a return on investment (cash inflow from operating activities) and cash flows that are generated from property sales, debt refinancing or sales of our investments are classified as a return of investment (cash inflow from investing activities).
Cash and Cash Equivalents	Cash and Cash Equivalents. We consider all cash on hand, demand deposits with financial institutions and short-term highly liquid investments with original maturities of three months or less to be cash equivalents. Our cash and cash equivalents are financial instruments that are exposed to concentrations of credit risk. We invest our cash with high-credit quality institutions. Cash balances may be invested in money market accounts that are not insured. We have not realized any losses in such cash investments or accounts and believe that we are not exposed to any significant credit risk.
Derivative Financial Instruments	Derivative Financial Instruments. We primarily hedge our foreign currency risk by borrowing in the currencies in which we invest. Generally, we borrow in the functional currency of our consolidated subsidiaries. We may use derivative financial instruments, such as foreign currency forward and option contracts to manage foreign currency exchange rate risk related to both our foreign investments and the related earnings. In addition, we occasionally use interest rate swap and forward contracts to manage interest rate risk and limit the impact of future interest rate changes on earnings and cash flows, primarily with variable-rate debt. We do not use derivative financial instruments for trading or speculative purposes. Each derivative transaction is customized and not exchange-traded. We recognize all derivatives at fair value within the line items Other Assets Other Liabilities Designated Derivatives. We may choose to designate our derivative financial instruments, generally foreign currency forwards as net investment hedges in foreign operations or interest rate swaps or foreign currency forwards as cash flow hedges. At inception of the transaction, we formally designate and document the derivative financial instrument as a hedge of a specific underlying exposure, the risk management objective and the strategy for undertaking the hedge transaction. We formally assess both at inception and at least quarterly thereafter, the effectiveness of our hedging transactions. Due to the high degree of effectiveness between the hedging instruments and the underlying exposures hedged, fluctuations in the value of the derivative financial instruments will generally be offset by changes in the cash flows or fair values of the underlying exposures being hedged. Changes in the fair value of derivatives that are designated and qualify as net investment hedges in foreign operations and cash flow hedges are recorded in AOCI/L AOCI/L Foreign Currency and Derivative Gains (Losses), Net AOCI/ Interest Expense Interest Expense AOCI/L Interest Expense In addition to the net investment hedges described above, we may issue debt in a currency that is not the same functional currency of the borrowing entity to hedge our international investments. We designate the debt and related accrued interest as a nonderivative net investment hedge to offset the translation and economic exposures related to our international investments. If the debt and related accrued interest exceeds the designated amount of our international investment, the foreign currency remeasurement on the unhedged portion of the debt during the period is recognized in Foreign Currency and Derivative Gains (Losses), Net. Undesignated Derivatives. We also use derivatives, such as foreign currency forwards and option contracts, that are not designated as hedges to manage foreign currency exchange rate risk related to our results of operations. The changes in fair values of these derivatives that were not designated or did not qualify as hedging instruments are immediately recognized in earnings within the line item in the Consolidated Statements of Income. These gains or losses are generally offset by lower or higher earnings as a result in exchange rates that were different than our expectations. In addition, we may choose to not designate our interest rate swap and forward contracts. If a swap or forward contract is not designated as a hedge, the changes in fair value of these instruments is immediately recognized in earnings within the line item Interest Expense .
Noncontrolling Interests	Noncontrolling Interests. Noncontrolling interests represent the share of consolidated entities owned by third parties. We recognize each noncontrolling holder’s respective share of the estimated fair value of the net assets at the date of formation or acquisition. Noncontrolling interests are subsequently adjusted for the noncontrolling holder’s share of additional contributions, distributions and their share of the net earnings or losses of each respective consolidated entity. We allocate net income to noncontrolling interests based on the weighted average ownership interest during the period. The net income that is not attributable to us is reflected in the line item Net Earnings Attributable to Noncontrolling Interests . We do not recognize a gain or loss on transactions with a consolidated entity in which we do not own 100% of the equity, but we reflect the difference in cash received or paid from the noncontrolling interests carrying amount as additional paid-in-capital Certain limited partnership interests, including OP units, are exchangeable into our common stock. Common stock issued upon exchange of a holder’s noncontrolling interest is accounted for at the carrying value of the surrendered limited partnership interest and the difference between the carrying value and the fair value of the common stock issued is recorded to additional paid-in-capital.
Revenue Recognition	Revenue Recognition. Rental Revenues and Recoveries. We lease our operating properties to customers under agreements that are classified as operating leases. We recognize the total minimum lease payments provided for under the leases on a straight-line basis over the lease term. Generally, under the terms of our leases, the majority of our rental expenses are recovered from our customers. We reflect amounts recovered from customers as revenues in the period that the applicable expenses are incurred. We make a provision for possible loss if the collection of a receivable balance is considered doubtful. Strategic Capital Revenues. Strategic capital revenues include revenues we earn from the management services we provide to unconsolidated entities. These fees are determined in accordance with the terms specific to each arrangement and may include recurring fees such as property and asset management fees or transactional fees for leasing, acquisition, development, construction, financing, legal and tax services provided. We recognize these fees as we provide the services or on a cost basis for development fees. We may also earn incentive returns (“promotes” or “promote revenues”) based on a venture’s cumulative returns over a certain time-period and the returns are determined by both the operating performance and real estate valuation of the venture, including highly variable inputs such as capitalization rates, market rents, interest rates and foreign currency exchange rates. As these key inputs are highly volatile and out of our control, and such volatility can materially impact our promotes period over period, we recognize promote revenues at or near the end of the performance period. We include the third-party investors’ share of promotes in Strategic Capital Revenues. We also earn fees from ventures that we consolidate. Upon consolidation, these fees are eliminated from our earnings and the third-party share of these fees are recognized as a reduction of Net Earnings Attributable to Noncontrolling Interests. Development Management and Other Revenues. Development management and other revenues principally include development and construction management fees recognized as we provide the services or on a cost basis. Gains on Real Estate Transactions, Net. We recognize gains on the disposition of real estate when the recognition criteria have been met, generally at the time the risks and rewards and title have transferred and we no longer have substantial continuing involvement with the real estate sold. We recognize losses from the disposition of real estate when known. We recognize gains or losses on the remeasurement of equity investments to fair value upon acquisition of a controlling interest in any of our previously unconsolidated entities and the transaction is considered the acquisition of a business. Adoption of the new revenue recognition guidance on January 1, 2018 did not impact our recognition of sales to third parties. Beginning January 1, 2018, we recognize the entire gain attributed to contributions of real estate properties to unconsolidated entities. We previously recognized a gain on contribution only to the extent of the third-party ownership in the unconsolidated entity acquiring the property and deferred the portion of the gain related to our ownership through a reduction to our investment in the applicable unconsolidated entity. We adjusted our proportionate share of net earnings or losses recognized in future periods to reflect the entities’ recorded depreciation expense as if it were computed on our lower basis in the contributed properties rather than on the entity’s basis.
Rental Expense	Rental Expenses. Rental expenses principally include the cost of our property management personnel, utilities, repairs and maintenance, property insurance, real estate taxes and the other costs of managing the properties.
Strategic Capital Expenses	Strategic Capital Expenses. Strategic capital expenses generally include the direct expenses associated with the asset management of the unconsolidated co-investment ventures provided by our employees who are assigned to our Strategic Capital segment and the costs of our Prologis Promote Plan based on earned promotes. In addition, in order to achieve efficiencies and economies of scale, all of our property management functions are provided by property management personnel who are assigned to our Real Estate Operations segment. These individuals perform the property-level management of the properties in our owned and managed portfolio, which include properties we consolidate and those we manage that are owned by the unconsolidated co-investment ventures. We allocate the costs of our property management to the properties we consolidate (included in Rental Expenses ) and the properties owned by the unconsolidated co-investment ventures (included in Strategic Capital Expenses ) by using the square feet owned by the respective portfolios.
Equity-Based Compensation	Equity-Based Compensation. We account for equity-based compensation by measuring the cost of employee services received in exchange for an award of an equity instrument based on the fair value of the award on the grant date. We recognize the cost of the award on a straight-line basis over the period during which an employee is required to provide service in exchange for the award, generally the vesting period.
Income Taxes	Income Taxes. Under the Internal Revenue Code, REITs are generally not required to pay federal income taxes if they distribute 100% of their taxable income and meet certain income, asset and stockholder tests. If we fail to qualify as a REIT in any taxable year, we will be subject to federal income taxes at regular corporate rates (including any alternative minimum tax) and may not be able to qualify as a REIT for the four subsequent taxable years. Even as a REIT, we may be subject to certain foreign, state and local taxes on our own income and property, and to federal income and excise taxes on our undistributed taxable income. We have elected taxable REIT subsidiary (“TRS”) status for some of our consolidated subsidiaries. This allows us to provide services that would otherwise be considered impermissible for REITs. Many of the foreign countries in which we have operations do not recognize REITs or do not accord REIT status under their respective tax laws to our entities that operate in their jurisdiction. In the U.S., we are taxed in certain states in which we operate. Accordingly, we recognize income tax expense for the federal and state income taxes incurred by our TRSs, taxes incurred in certain states and foreign jurisdictions, and interest and penalties associated with our unrecognized tax benefit liabilities. We evaluate tax positions taken in the Consolidated Financial Statements under the interpretation for accounting for uncertainty in income taxes. As a result of this evaluation, we may recognize a tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by taxing authorities. We recognize deferred income taxes in certain taxable entities. For federal income tax purposes, certain acquisitions have been treated as tax-free transactions resulting in a carry-over basis in assets and liabilities. For financial reporting purposes and in accordance with purchase accounting, we record all of the acquired assets and assumed liabilities at the estimated fair value at the date of acquisition, as discussed above. For our taxable subsidiaries, including certain international jurisdictions, we recognize the deferred income tax liabilities that represent the tax effect of the difference between the tax basis carried over and the fair value of the tangible and intangible assets at the date of acquisition. Any subsequent increases or decreases to the deferred income tax liability recorded in connection with these acquisitions, are reflected in earnings. If taxable income is generated in these subsidiaries, we recognize a benefit in earnings as a result of the reversal of the deferred income tax liability previously recorded at the acquisition date and we record current income tax expense representing the entire current income tax liability. If the reversal of the deferred income tax liability results from a sale or contribution of assets, the classification of the reversal to the Consolidated Statements of Income is based on the taxability of the transaction. We record the reversal to deferred income tax benefit as a taxable transaction if we dispose of the asset. We record the reversal as Gains on Real Estate Transactions, Net Deferred income tax expense is generally a function of the period’s temporary differences (items that are treated differently for tax purposes than for financial reporting purposes) and the utilization of tax net operating losses (“NOL”) generated in prior years that had been previously recognized as deferred income tax assets. We provide for a valuation allowance for deferred income tax assets if we believe all or some portion of the deferred income tax asset may not be realized. Any increase or decrease in the valuation allowance that results from a change in circumstances that causes a change in the estimated ability to realize the related deferred income tax asset is included in deferred tax expense.
Environmental Costs	Environmental Costs. We incur certain environmental remediation costs, including cleanup costs, consulting fees for environmental studies and investigations, monitoring costs, and legal costs relating to cleanup, litigation defense, and the pursuit of responsible third parties. We expense costs incurred in connection with operating properties and properties previously sold. We capitalize costs related to undeveloped land as development costs and include any expected future environmental liabilities at the time of acquisition. We maintain a liability for the estimated costs of environmental remediation expected to be incurred in connection with undeveloped land, operating properties and properties previously sold that we adjust as appropriate as information becomes available.
New Accounting Pronouncements	New Accounting Pronouncements. New Accounting Standards Adopted Revenue Recognition . In May 2014, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update (“ASU”) that requires companies to use a five-step model to determine when to recognize revenue from customer contracts in an effort to increase consistency and comparability throughout global capital markets and across industries. In February 2017, the FASB issued an additional ASU that provides the accounting treatment for gains and losses from the derecognition of non-financial assets, including the accounting for partial sales of real estate properties. We adopted the revenue recognition and derecognition of non-financial assets standard, collectively the “new revenue recognition standard,” on January 1, 2018, on a modified retrospective basis. Rental revenues and recoveries earned from leasing our operating properties are excluded from this ASU and will be assessed with the adoption of the lease ASU discussed below. Our evaluation under the new revenue recognition standard included recurring and transactional fees and promotes earned from our co-investment ventures as well as dispositions and contributions of real estate properties. There is no change in our recognition of recurring and transactional fees as we will continue to recognize these fees as we provide the services. As discussed above in our policy on Strategic Capital Revenues For dispositions of real estate properties to third parties, the ASU did not impact the recognition of the sale. Beginning January 1, 2018, we recognized the entire gain attributed to contributions of real estate properties to unconsolidated entities. We adopted the practical expedient to only assess the recognition of revenue for open contracts during the transition period and there was no adjustment to the opening balance of retained earnings at January 1, 2018. The comparative information has not been restated and continues to be reported under the accounting standards in effect for that period. New Accounting Standards Issued but not yet Adopted Leases. In February 2016, the FASB issued an ASU that provides the principles for the recognition, measurement, presentation and disclosure of leases. In July 2018, the FASB issued an additional ASU that provided for targeted improvements to the February 2016 ASU. We refer to both ASUs collectively as the “new lease standard.” • As a lessor. The accounting for lessors will remain largely unchanged from current GAAP; however, the new lease standard requires that lessors expense, on an as-incurred basis, certain initial direct costs that are not incremental in negotiating a lease. Under existing standards, these costs are capitalizable and therefore the new lease standard will result in certain of these costs being expensed as incurred after adoption. During 2018, 2017 and 2016, we capitalized $21.2 million, $23.8 million and $23.9 million, respectively, of internal costs related to our leasing activities. The new lease standard provides lessors a practical expedient to not separate rental recovery revenue from the associated rental revenue if certain criteria are met. We assessed these criteria and concluded that the timing and pattern of transfer for rental recoveries and the associated rental revenue are the same and our leases will continue to qualify as operating leases under which we will recognize rental revenue, and therefore we will account for and present rental revenue and rental recovery revenue as a single component. • As a lessee. Under the new lease standard, lessees apply a dual approach, classifying leases as either finance or operating leases. A lessee is required to record a right-of-use (“ROU”) asset and a lease liability for all leases with a term of greater than 12 months, regardless of their lease classification. We are a lessee of ground and office space leases. At December 31, 2018 we had approximately 130 ground and office space leases that will require us to measure and record both a ROU asset and lease liability of approximately $400 million on January 1, 2019. We are finalizing our discount rate analysis which is a key driver in the measurement of the ROU asset and lease liability. The weighted average remaining lease term for our operating leases was 27.9 years at December 31, 2018. Details of our future minimum rental payments under ground and office space leases at December 31, 2018 are disclosed in Note 4. We adopted the lease standard on January 1, 2019 and applied it prospectively. We elected the practical expedients available for implementation and we will not be required to reassess the following and therefore we do not expect an adjustment to the opening balance of retained earnings: (i) whether an expired or existing contract meets the definition of a lease; (ii) the lease classification at the adoption date for existing leases; and (iii) whether costs previously capitalized as initial direct costs would continue to be amortized. This allows us to continue to account for our ground and office space leases as operating leases, however, any new or renewed ground leases may be classified as financing leases unless they meet certain conditions to be considered a lease involving land owned by a government unit or authority. The new lease standard will also require new disclosures within Form 10-Q for the quarterly period ended March 31, 2019. Derivatives and Hedging . In August 2017, the FASB issued an ASU that simplifies the application of hedge accounting guidance in current GAAP and improves the reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its consolidated financial statements. Among the simplification updates, the ASU eliminates the requirement in current GAAP to separately recognize periodic hedge ineffectiveness. Mismatches between the changes in value of the hedged item and hedging instrument may still occur but they will no longer be separately reported. The ASU requires the presentation of the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. We adopted the ASU on January 1, 2019 on a modified retrospective basis and do not expect an adjustment to the opening balance of retained earnings.

DCT Transaction (Tables)

DCT Transaction (Tables) - DCT Transaction [Member]	12 Months Ended
	Dec. 31, 2018
Schedule of Aggregate Equity Consideration	The aggregate equity consideration of approximately $6.6 billion is calculated below (in millions, except price per share): Number of Prologis shares and units issued upon conversion of DCT shares and units at August 21, 2018 99.73 Multiplied by price of Prologis' common stock on August 21, 2018 $ 65.75 Fair value of Prologis shares and units issued $ 6,557
Schedule of Purchase Price Allocated to DCT Net Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed	Under acquisition accounting, the total purchase price was allocated to the DCT net tangible and identifiable intangible assets acquired and liabilities assumed based on their relative fair values as follows (in millions): Net investments in real estate $ 8,362 Intangible assets, net of intangible liabilities 292 Cash and other assets 24 Debt (1,863 ) Accounts payable, accrued expenses and other liabilities (143 ) Noncontrolling interests (65 ) Total purchase price, including transaction costs $ 6,607

Real Estate (Tables)

Real Estate (Tables)	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Investments in Real Estate Properties	Investments in real estate properties consisted of the following at December 31 (dollars and square feet in thousands): Square Feet Number of Buildings 2018 (1) 2017 2018 (1) 2017 2018 (1) 2017 Operating properties: Buildings and improvements 354,762 294,811 1,858 1,525 $ 22,587,267 $ 16,849,349 Improved land 8,044,888 5,735,978 Development portfolio, including land costs: Prestabilized 8,709 7,345 30 22 828,064 546,173 Properties under development 27,715 22,216 70 63 1,314,737 1,047,316 Land (2) 1,192,220 1,154,383 Other real estate investments (3) 619,811 505,445 Total investments in real estate properties 34,586,987 25,838,644 Less accumulated depreciation 4,656,680 4,059,348 Net investments in real estate properties $ 29,930,307 $ 21,779,296 (1) The portfolio acquired in the DCT Transaction, excluding 49 operating properties classified as Assets Held for Sale or Contribution, (2) At December 31, 2018 and 2017, our land is comprised of 4,929 and 5,191 acres, respectively. (3) Included in other real estate investments were: (i) land parcels that are ground leased to third parties; (ii) non-logistics real estate; (iii) our corporate headquarters; (iv) costs related to future development projects, including purchase options on land; (v) earnest money deposits associated with potential acquisitions; and (vi) infrastructure costs related to projects we are developing on behalf of others.
Summary of Properties Acquired	The following table summarizes our real estate acquisition activity, excluding the DCT Transaction (as discussed in Note 3), for the years ended December 31 (dollars and square feet in thousands): 2018 2017 2016 Number of operating properties 20 16 9 Square feet 4,757 6,859 1,823 Acquisition value of net investments in real estate properties (1) (2) $ 1,008,718 $ 1,139,410 $ 411,706 (1) Value includes the acquisition of 1,210, 1,392 and 776 acres of land in 2018, 2017 and 2016, respectively. (2) In August 2017, we acquired our partner’s interest in certain joint ventures in Brazil for an aggregate price of R$1.2 billion ($381.7 million). As a result of this transaction, we began consolidating real estate properties that included twelve operating properties, two prestabilized properties and 531 acres of undeveloped land. We accounted for the transaction as a step-acquisition under the business combination rules and recognized a gain. The results of operations for these real estate properties were not significant in 2017. In January 2019, we contributed the majority of these real estate assets into a newly formed joint venture.
Summary of Properties Disposed	The following table summarizes our gains on real estate transactions, net for the years ended December 31 (dollars and square feet in thousands): 2018 2017 2016 Contributions to unconsolidated entities (1) Number of properties 40 222 35 Square feet 13,115 48,171 11,624 Net proceeds (2) $ 1,511,429 $ 3,201,986 $ 1,231,878 Gains on contributions, net (2) (3) $ 459,107 $ 847,034 $ 267,441 Dispositions to third parties Number of properties 78 110 172 Square feet 15,447 17,147 20,360 Net proceeds (2) (4) $ 1,248,487 $ 1,281,501 $ 1,760,048 Gains on dispositions, net (2) (4) $ 381,889 $ 274,711 $ 353,668 Total gains on contributions and dispositions, net $ 840,996 $ 1,121,745 $ 621,109 Gains on revaluation of equity investments upon acquisition of a controlling interest - 61,220 - Gains on redemptions of investments in co-investment ventures - - 136,289 Total gains on real estate transactions, net $ 840,996 $ 1,182,965 $ 757,398 (1) In 2017, we contributed 190 operating properties totaling 37.1 million square feet owned by Prologis North American Industrial Fund ("NAIF") to Prologis Targeted U.S. Logistics Fund ("USLF"), our unconsolidated co-investment venture. In exchange for the contribution, we received cash proceeds and additional units and USLF assumed $956.0 million of secured debt. (2) Includes the contribution and disposition of land parcels. (3) Amounts in 2018 reflect the adoption of the new revenue recognition standard under which we recognized the entire gain attributed to contributions of real estate properties to unconsolidated entities. Amounts in 2017 and 2016 reflect our prior recognition of the gain to the extent of the third-party ownership in the unconsolidated entity acquiring the property with the deferral of a portion of the gain related to our ownership. ( 4 ) In 2017, we sold our investment in Europe Logistics Venture 1.
Summary of Minimum Lease Payments on Leases	The following table summarizes our minimum lease payments on leases with lease periods greater than one year for space in our operating properties, prestabilized development properties and leases of land subject to ground leases at December 31, 2018 (in thousands): 2019 $ 2,006,475 2020 1,867,253 2021 1,589,102 2022 1,278,281 2023 990,970 Thereafter 3,293,320 Total $ 11,025,401
Future Minimum Rental Payments under Non-Cancelable Operating Leases	The following table summarizes our future minimum rental payments under non-cancelable operating leases in effect at December 31, 2018 (in thousands): 2019 $ 38,769 2020 38,267 2021 34,307 2022 32,312 2023 30,180 Thereafter 670,147 Total $ 843,982

Unconsolidated Entities (Tables

Unconsolidated Entities (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule Of Equity Method Investments [Line Items]
Summary of Investments in and Advances to our Unconsolidated Entities	The following table summarizes our investments in and advances to our unconsolidated entities at December 31 (in thousands): 2018 2017 Unconsolidated co-investment ventures $ 5,407,838 $ 5,274,702 Other ventures 337,456 221,748 Total $ 5,745,294 $ 5,496,450
Information About Investments in Co-investment Ventures by Property Funds	The following table summarizes our investments in the individual co-investment ventures at December 31 (dollars in thousands): Ownership Percentage Investment in and Advances to Co-Investment Venture 2018 2017 2018 2017 Prologis Targeted U.S. Logistics Fund, L.P. (“USLF”) 27.4 % 28.2 % $ 1,456,427 $ 1,383,021 FIBRA Prologis (1) 46.7 % 46.3 % 536,377 533,941 Prologis European Logistics Partners Sàrl (“PELP”) (2) 50.0 % 50.0 % 1,517,115 1,766,075 Prologis European Logistics Fund (“PELF”) 27.9 % 26.3 % 1,198,904 1,017,361 Prologis UK Logistics Venture (“UKLV”) (2) 15.0 % 15.0 % 68,002 29,382 Nippon Prologis REIT, Inc. (“NPR”) (3) 15.1 % 15.1 % 472,035 406,568 Prologis China Logistics Venture I, LP, II, LP and III, LP (“Prologis China Logistics Venture”) (2) 15.0 % 15.0 % 141,071 116,890 Brazil joint ventures 10.0 % 10.0 % 17,907 21,464 Total $ 5,407,838 $ 5,274,702 (1) At December 31, 2018, we owned 301.3 million units of FIBRA Prologis that had a closing price of Ps 30.30 ($1.54) per unit on the Mexican Stock Exchange. We have granted FIBRA Prologis a right of first refusal with respect to stabilized properties that we plan to sell in Mexico. ( 2 ) We have one partner in each of these co-investment ventures. (3 ) At December 31, 2018, we owned 0.3 million units of NPR that At December 31, 2018 and 2017, we had receivables from NPR of $122.0 million and $106.2 million, respectively, related to customer security deposits that originated through a leasing company owned by us that pertain to properties previously contributed to NPR. We have a corresponding payable to NPR’s customers in Other Liabilities
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Summary of Investments in and Advances to our Unconsolidated Entities	The following table summarizes the key property information, financial position and operating information of our unconsolidated co-investment ventures (not our proportionate share) and the amounts we recognized in the Consolidated Financial Statements related to our unconsolidated co-investment ventures at December 31 and for the years ended December 31 (dollars and square feet in millions): U.S. Other Americas Europe Asia Total As of: 2018 2017 2018 2017 2018 2017 2018 2017 2018 2017 Key property information: Ventures 1 1 2 2 3 3 2 2 8 8 Operating properties 566 552 209 205 669 707 125 95 1,569 1,559 Square feet 91 88 39 37 159 166 51 41 340 332 Financial position: Unconsolidated co-investment ventures: Total assets ($) 7,303 7,062 2,137 2,118 13,028 13,586 7,089 6,133 29,557 28,899 Third-party debt ($) 2,094 2,313 838 756 2,548 2,682 2,668 2,328 8,148 8,079 Total liabilities ($) 2,350 2,520 862 782 3,615 3,655 3,006 2,685 9,833 9,642 Our investment balance ($) (1) 1,457 1,383 554 555 2,784 2,813 613 524 5,408 5,275 Our weighted average ownership (2) 27.4 % 28.2 % 44.4 % 43.4 % 33.2 % 32.8 % 15.1 % 15.1 % 28.3 % 28.8 % U.S. Other Americas Europe Asia Total Operating Information: 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 2018 2017 2016 For the years ended: Unconsolidated co-investment ventures: Total revenues ($) 676 533 395 217 245 242 1,101 1,030 964 457 372 342 2,451 2,180 1,943 Net earnings ($) 150 139 57 63 71 71 509 406 333 88 182 101 810 798 562 Our earnings from unconsolidated co-investment ventures, net ($) 45 33 10 26 26 27 193 146 138 15 29 17 279 234 192 (1) Prologis’ investment balance is presented at our adjusted basis derived from the ventures’ U.S. GAAP information. The difference between our ownership interest of a venture’s equity and our investment balance at December 31, 2018 and 2017, results principally from four types of transactions: (i) deferred gains from the contribution of property to a venture prior to January 1, 2018 ($635.9 million and $667.3 million, respectively); (ii) recording additional costs associated with our investment in the venture ($94.4 million and $94.2 million, respectively); (iii) receivables, principally for fees and promotes ($166.7 million and $103.8 million, respectively); and (iv) customer security deposits retained subsequent to property contributions to NPR, as discussed above. For deferred gains from partial sales recorded prior to January 1, 2018, we recognize these gains over the lives of the underlying real estate properties or at the time of disposition to a third party. (2 ) Represents our weighted average ownership interest in all unconsolidated co-investment ventures based on each entity’s contribution of total assets, before depreciation, net of other liabilities.
Summary of Strategic Capital Revenues Recognized in Consolidated Statements of Income Related to Co-Investment Ventures	The following table summarizes the Strategic Capital Revenues 2018 2017 2016 Recurring fees $ 230,746 $ 195,513 $ 174,315 Transactional fees 55,816 48,225 38,110 Promote revenues 116,290 127,519 88,750 Total strategic capital revenues from unconsolidated co-investment ventures (1) $ 402,852 $ 371,257 $ 301,175 (1) These amounts exclude strategic capital revenues from other ventures.

Assets Held for Sale or Contr_2

Assets Held for Sale or Contribution (Tables)	12 Months Ended
	Dec. 31, 2018
Real Estate Assets Held For Development And Sale [Abstract]
Summary of Assets Held for Sale or Contribution	Assets held for sale or contribution consisted of the following at December 31 (dollars and square feet in thousands): 2018 2017 Number of operating properties 57 22 Square feet 8,236 5,384 Total assets held for sale or contribution $ 622,288 $ 342,060 Total liabilities associated with assets held for sale or contribution – included in Other Liabilities $ 12,972 $ 9,341

Other Assets and Other Liabil_2

Other Assets and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Text Block [Abstract]
Schedule of Other Assets	The following table summarizes our other assets, net of amortization and depreciation, if applicable, at December 31 (in thousands): 2018 2017 Acquired lease intangibles $ 450,690 $ 202,087 Leasing commissions 346,852 306,461 Rent leveling 346,116 311,932 Fixed assets 112,211 109,823 Prepaid assets 108,581 102,179 Accounts receivable 107,141 85,118 Value added taxes receivable 97,047 84,339 Other notes receivable 35,338 35,406 Derivative assets 22,731 19,139 Management contracts 16,257 17,608 Deferred income taxes 8,767 13,533 Other 124,188 94,338 Total $ 1,775,919 $ 1,381,963
Schedule of Other Liabilities	The following table summarizes our other liabilities, net of amortization, if applicable, at December 31 (in thousands): 2018 2017 Tenant security deposits $ 240,467 $ 209,741 Environmental liabilities 88,863 25,728 Unearned rents 86,083 71,392 Acquired lease intangibles 76,087 24,769 Income tax liabilities 59,766 56,988 Indemnification liability 36,476 39,480 Value added taxes payable 11,037 10,081 Deferred income 10,088 15,754 Derivative liabilities 8,159 32,229 Other 149,420 173,737 Total $ 766,446 $ 659,899
Schedule of Amortization Expense and Rental Revenues	The following table summarizes the expected future amortization of leasing commissions and forgone rent (included in acquired lease intangibles) into amortization expense and above and below market leases (included in acquired lease intangibles) and rent leveling net assets into rental revenues, all based on the balances at December 31, 2018 (in thousands): Amortization Expense Net (Increase) Decrease to Rental Revenues 2019 $ 192,962 $ (28,646 ) 2020 153,851 20,947 2021 117,338 40,580 2022 88,279 46,408 2023 65,102 43,317 Thereafter 137,245 190,188 Total $ 754,777 $ 312,794

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt Summary	All debt is incurred by the OP or its consolidated subsidiaries. The following table summarizes our debt at December 31 (dollars in thousands): 2018 2017 Weighted Average Interest Rate (1) Amount Outstanding (2) (3) Weighted Average Interest Rate (1) Amount Outstanding (2) Credit facilities 3.4 % $ 50,500 1.8 % $ 317,392 Senior notes (4) 2.7 % 8,304,147 3.0 % 6,067,277 Term loans and unsecured other 1.8 % 1,921,428 1.7 % 2,060,491 Secured mortgage (5) 5.1 % 813,740 5.3 % 967,471 Total 2.7 % $ 11,089,815 2.9 % $ 9,412,631 (1) The interest rates presented represent the effective interest rates (including amortization of debt issuance costs and the noncash premiums or discounts) at the end of the period for the debt outstanding and include the impact of undesignated and designated interest rate swaps, which effectively fix the interest rate on our variable rate debt. (2) We borrow in the functional currencies of the countries where we invest. Included in the outstanding balances at December 31 were borrowings denominated in the following currencies: 2018 2017 Amount Outstanding % of Total Amount Outstanding % of Total British pound sterling $ 635,972 5.8 % $ 671,522 7.1 % Canadian dollar 266,337 2.4 % 451,080 4.8 % Euro 4,893,693 44.1 % 3,839,422 40.8 % Japanese yen 1,951,844 17.6 % 1,306,380 13.9 % U.S. dollar 3,341,969 30.1 % 3,144,227 33.4 % Total $ 11,089,815 $ 9,412,631 (3) Through the DCT Transaction, we assumed $1.9 billion of debt with a weighted average interest rate of 3.4%, which includes noncash premium. During the third quarter of 2018, we paid down $1.8 billion of the assumed debt through the senior note issuances described below. We incurred prepayment penalties of $48.7 million upon extinguishment that was reduced by the $46.5 million premium recorded upon assumption of this debt in the DCT Transaction, resulting in a loss of $2.2 million. (4) Notes are due January 2020 to September 2048 with effective interest rates ranging from 0.0% to 4.5% at December 31, 2018. (5) Debt is due January 2019 to November 2027 with effective interest rates ranging from 0.3% to 7.8% at December 31, 2018. The debt is principally secured by 133 operating properties and one prestabilized development property with an aggregate undepreciated cost of $2.2 billion at December 31, 2018.
Credit Facilities	The following table summarizes information about our Credit Facilities (dollars in millions): 2018 2017 2016 For the years ended December 31: Weighted average daily interest rate 3.1 % 1.3 % 1.4 % Weighted average daily borrowings $ 253 $ 111 $ 128 Maximum borrowings outstanding at any month-end $ 485 $ 317 $ 307 At December 31: Aggregate lender commitments $ 3,470 $ 3,490 $ 3,306 Less: Borrowings outstanding 51 317 35 Outstanding letters of credit 31 33 36 Current availability $ 3,388 $ 3,140 $ 3,235
Schedule of Debt	The following table summarizes the issuances of senior notes during 2018 (principal in thousands): Initial Borrowing Date Principal (1) Stated Interest Rate Maturity Date Borrowing Currency USD January (2) € 400,000 $ 494,180 Euribor + 0.3% January 2020 June $ 700,000 $ 700,000 3.9% – 4.4% September 2028 – 2048 July € 700,000 $ 818,720 1.9% January 2029 September ¥ 55,100,000 $ 488,714 0.7% – 1.5% September 2025 – 2038 (1) The exchange rate used to calculate into U.S. dollars was the spot rate at the settlement date. (2) In association with the issuance, we entered into cash flow hedges to effectively fix the interest rate, as discussed in Note 15.
Summary of Outstanding Term Loans	The following table summarizes our outstanding term loans at December 31 (dollars and borrowing currency in thousands): Term Loan Borrowing Currency Initial Borrowing Date Lender Commitment at 2018 Amount Outstanding at 2018 Amount Outstanding at 2017 Interest Rate Maturity Date Borrowing Currency USD USD USD 2017 Term Loan (1) USD, EUR, JPY and GBP June 2014 $ 500,000 $ 500,000 $ 500,000 $ 500,000 LIBOR + 0.9% May 2020 2015 Canadian Term Loan (2) CAD December 2015 $ 170,506 $ 125,107 125,107 296,595 CDOR + 0.9% February 2023 2016 Yen Term Loan JPY August 2016 ¥ 100,000,000 $ 909,813 909,813 1,065,965 Yen LIBOR + 0.7% August 2022 – 2023 March 2017 Yen Term Loan JPY March 2017 ¥ 12,000,000 $ 109,178 109,178 106,597 0.9% and 1.0% March 2027 – 2028 October 2017 Yen Term Loan JPY October 2017 ¥ 10,000,000 $ 90,981 90,981 88,830 0.9% October 2032 December 2018 Yen Term Loan JPY December 2018 ¥ 20,000,000 $ 181,963 181,963 - 1.2% and Yen LIBOR + 0.7% December 2031 – June 2033 Subtotal 1,917,042 2,057,987 Debt issuance costs, net (8,230 ) (11,042 ) Total $ 1,908,812 $ 2,046,945 (1) We may increase the borrowings on the 2017 Term Loan up to $1.0 billion, subject to obtaining additional lender commitments. We paid down $2.0 billion and $1.2 billion and reborrowed $2.0 billion and $1.5 billion in 2018 and 2017, respectively. We may extend the maturity date twice, by one year each, subject to satisfaction of certain conditions and the payment of an extension fee. (2) During 2018, we paid down CAD 201.4 million ($158.9 million) on the 2015 Canadian Term Loan. In association with the pay down, we terminated our Canadian-denominated cash flow hedges. See Note 15 for more information.
Long-Term Debt Maturities	Principal payments due on our debt, for each year through the period ended December 31, 2023, and thereafter were as follows at December 31, 2018 (in thousands): Unsecured Credit Senior Term Loans Secured Maturity Facilities Notes and Other Mortgages Total 2019 (1) $ - $ - $ 868 $ 272,188 $ 273,056 2020 (2) 50,500 1,145,000 500,723 24,466 1,720,689 2021 - 801,500 778 199,560 1,001,838 2022 - 801,500 273,786 12,103 1,087,389 2023 - 850,000 762,887 39,248 1,652,135 Thereafter - 4,766,808 390,616 268,795 5,426,219 Subtotal 50,500 8,364,808 1,929,658 816,360 11,161,326 Premiums (discounts), net - (26,173 ) - 945 (25,228 ) Debt issuance costs, net - (34,488 ) (8,230 ) (3,565 ) (46,283 ) Total $ 50,500 $ 8,304,147 $ 1,921,428 $ 813,740 $ 11,089,815 (1) We expect to repay the amounts maturing in the next twelve months with cash generated from operations, proceeds from dispositions of real estate properties, or as necessary, with borrowings on our Credit Facilities. (2) Included in the 2020 maturities was the Global Facility that was recast in 2019 and now can be extended to 2024 and the 2017 Term Loan that can be extended until 2022.
Interest Expense	The following table summarizes the components of interest expense for the years ended December 31 (in thousands): 2018 2017 2016 Gross interest expense $ 268,942 $ 328,228 $ 383,098 Amortization of debt premiums, net (590 ) (13,728 ) (30,596 ) Amortization of debt issuance costs, net 13,243 14,479 15,459 Interest expense before capitalization $ 281,595 $ 328,979 $ 367,961 Capitalized amounts (52,454 ) (54,493 ) (64,815 ) Net interest expense $ 229,141 $ 274,486 $ 303,146 Total cash paid for interest, net of receipts and amounts capitalized $ 205,485 $ 278,313 $ 322,442
Activity Related to Repurchase of Debt and Net Loss on Early Extinguishment of Debt	The following table summarizes the activity related to the repurchase of debt and net loss on early extinguishment of debt for 2017 (in millions): Senior notes: Original principal amount $ 1,495.3 Cash purchase price $ 1,566.5 Secured mortgage debt: Original principal amount $ 538.3 Cash repayment price $ 538.3 Total: Original principal amount $ 2,033.6 Cash purchase/repayment price $ 2,104.8 Losses on early extinguishment of debt $ 68.4

Stockholders' Equity of Prolo_2

Stockholders' Equity of Prologis, Inc. (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Summary of Taxability of Common and Preferred Stock Dividends	The following summarizes the taxability of our common and preferred stock dividends for the years ended December 31: 2018 (1) 2017 2016 Common Stock: Ordinary income $ 1.34 $ 1.23 $ 0.60 Qualified dividend 0.03 0.01 0.15 Capital gains 0.55 0.52 0.93 Total distribution $ 1.92 $ 1.76 $ 1.68 Preferred Stock – Series Q: Ordinary income $ 2.98 $ 2.91 $ 2.02 Qualified dividend 0.06 0.08 0.29 Capital gains 1.23 1.28 1.96 Total dividend $ 4.27 $ 4.27 $ 4.27 (1) Taxability for 2018 is estimated.

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interest [Abstract]
Summary of Ownership Percentages and Noncontrolling Interests	The following table summarizes our ownership percentages and noncontrolling interests and the consolidated entities’ total assets and total liabilities at December 31 (dollars in thousands): Our Ownership Percentage Noncontrolling Interests Total Assets Total Liabilities 2018 2017 2018 2017 2018 2017 2018 2017 Prologis U.S. Logistics Venture 55.0 % 55.0 % $ 2,697,095 $ 2,581,629 $ 6,072,087 $ 6,030,819 $ 92,782 $ 284,162 Other consolidated entities (1) various various 139,374 78,613 1,045,202 806,138 53,145 30,330 Prologis, L.P. 2,836,469 2,660,242 7,117,289 6,836,957 145,927 314,492 Limited partners in Prologis, L.P. (2) (3) 666,326 414,341 - - - - Prologis, Inc. $ 3,502,795 $ 3,074,583 $ 7,117,289 $ 6,836,957 $ 145,927 $ 314,492 (1) Includes our two partnerships that have issued limited partnership units to third parties, as discussed above, along with various other consolidated entities. The limited partnership units outstanding at December 31, 2018 and 2017 were exchangeable into cash or, at our option, 0.7 million and 1.0 million shares of the Parent’s common stock, respectively. (2) We had 8.8 million and 8.9 million Class A Units that were convertible into 8.4 million and 8.5 million limited partnership units of the OP at December 31, 2018 and 2017, respectively. (3) At December 31, 2018 and 2017, excluding the Class A Units, there were limited partnership units in the OP that were exchangeable into cash or, at our option, 7.2 million and 4.1 million shares of the Parent’s common stock, respectively. Also included are the vested OP Long-Term Incentive Plan Units associated with our long-term compensation plan. See further discussion of Long-Term Incentive Plan Units in Note 12.

Long-Term Compensation (Tables)

Long-Term Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Assumptions Used for Each Grant	The following table details the assumptions used for each grant based on the year it was granted (dollars in thousands): 2018 2017 2016 Risk free interest rate 2.1 % 1.5 % 1.0 % Expected volatility 16.5 % 22.2 % 20.5 % Aggregate fair value $ 23,300 $ 20,400 $ 26,600
POP LTIP Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options, RSU and Performance Share Awards	The performance criteria were met for the 2016 – 2018, 2015 – 2017 and 2014 – 2016 performance periods, which resulted in the pool being awarded in January 2019, 2018 and 2017, respectively, in the form of common stock and POP LTIP Units. See below for details on these performance periods (dollars and units in thousands): 2016 – 2018 2015 – 2017 2014 – 2016 Performance pool $ 75,000 $ 110,230 $ 62,220 Common stock shares 379 582 486 POP LTIP Units and LTIP Units 824 1,170 698 Grant date fair value $ 62.38 $ 62.65 $ 52.53
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options, RSU and Performance Share Awards	The following table summarizes the activity for RSUs for the year ended December 31, 2018 (units in thousands): Unvested RSUs Weighted Average Grant Date Fair Value Balance at January 1, 2018 1,374 $ 45.57 Granted 761 61.20 Vested and distributed (787 ) 45.40 Forfeited (93 ) 54.84 Balance at December 31, 2018 1,255 $ 54.48
Long Term Incentive Plan Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options, RSU and Performance Share Awards	The following table summarizes the activity for LTIP Units for the year ended December 31, 2018 (units in thousands): Vested LTIP Units Unvested LTIP Units Unvested Weighted Average Grant Date Fair Value Balance at January 1, 2018 1,532 1,829 $ 46.48 Granted - 1,346 61.36 Forfeited - (81 ) 48.23 Vested LTIP Units 917 (917 ) 44.88 Vested POP LTIP Units (1) 1,170 - N/A Conversion to common limited partnership units (326 ) - N/A Balance at December 31, 2018 3,293 2,177 $ 56.05 (1) Vested units were based on the POP performance criteria being met for the 2015 – 2017 performance period and represented the earned award amount. Vested units are included in the POP award table above. Unvested POP LTIP Units for the 2015 – 2017 performance period were forfeited to the extent not earned.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Components of Earnings Before Income Taxes	The following table summarizes the components of earnings before income taxes for the years ended December 31 (in thousands): 2018 2017 2016 Domestic $ 1,078,678 $ 1,207,503 $ 719,018 International 807,612 608,065 628,086 Earnings before income taxes $ 1,886,290 $ 1,815,568 $ 1,347,104
Components of Provision for Income Tax	The following table summarizes the components of the provision for income taxes for the years ended December 31 (in thousands): 2018 2017 2016 Current income tax expense: U.S. federal $ 1,727 $ 214 $ 7,153 International 50,731 45,185 38,493 State and local 9,424 14,215 14,443 Total current income tax expense 61,882 59,614 60,089 Deferred income tax expense (benefit): U.S. federal (317 ) 2,533 (3,306 ) International 1,765 (7,538 ) (2,219 ) Total deferred income tax expense (benefit) 1,448 (5,005 ) (5,525 ) Total income tax expense $ 63,330 $ 54,609 $ 54,564
Deferred Income Tax Assets and Liabilities	The following table summarizes the deferred income tax assets and liabilities at December 31 (in thousands): 2018 2017 Gross deferred income tax assets: NOL carryforwards $ 336,485 $ 334,358 Basis difference – real estate properties 55,198 53,902 Basis difference – equity investments 5,448 2,567 Basis difference – intangibles 1,076 2,173 Section 163(j) interest limitation 4,771 26,280 Capital loss carryforward 1 10,566 Other – temporary differences 3,487 5,724 Total gross deferred income tax assets 406,466 435,570 Valuation allowance (379,987 ) (410,896 ) Gross deferred income tax assets, net of valuation allowance 26,479 24,674 Gross deferred income tax liabilities: Basis difference – real estate properties 69,157 63,246 Basis difference – equity investments 2,380 1,114 Other – temporary differences 2,941 769 Total gross deferred income tax liabilities 74,478 65,129 Net deferred income tax liabilities $ 47,999 $ 40,455
Summary of Operating Loss Carryforwards	At December 31, 2018, we had NOL carryforwards as follows (in thousands): U.S. Europe Mexico Japan Other Gross NOL carryforward $ 160,882 $ 646,521 $ 358,070 $ 115,176 $ 44,843 Tax-effected NOL carryforward 38,943 153,876 110,152 22,517 10,997 Valuation allowance (37,516 ) (145,460 ) (110,152 ) (22,517 ) (8,794 ) Net deferred tax asset – NOL carryforward $ 1,427 $ 8,416 $ - $ - $ 2,203 Expiration periods 2022 – indefinite 2019 – indefinite 2019 – 2029 2019 – 2027 2019 – indefinite

Earnings Per Common Share or _2

Earnings Per Common Share or Unit (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share Unit	The computation of our basic and diluted earnings per share and unit for the years ended December 31 (in thousands, except per share and unit amounts) was as follows: Prologis, Inc. 2018 2017 2016 Net earnings attributable to common stockholders – Basic $ 1,643,426 $ 1,641,931 $ 1,203,218 Net earnings attributable to exchangeable limited partnership units (1) 49,743 46,280 37,079 Adjusted net earnings attributable to common stockholders – Diluted $ 1,693,169 $ 1,688,211 $ 1,240,297 Weighted average common shares outstanding – Basic 567,367 530,400 526,103 Incremental weighted average effect on exchange of limited partnership units (1) 17,768 15,945 16,833 Incremental weighted average effect of equity awards 5,104 5,955 3,730 Weighted average common shares outstanding – Diluted (2) 590,239 552,300 546,666 Net earnings per share attributable to common stockholders: Basic $ 2.90 $ 3.10 $ 2.29 Diluted $ 2.87 $ 3.06 $ 2.27 Prologis, L.P. 2018 2017 2016 Net earnings attributable to common unitholders $ 1,692,313 $ 1,686,945 $ 1,237,519 Net earnings attributable to Class A Units (24,465 ) (26,642 ) (20,069 ) Net earnings attributable to common unitholders – Basic 1,667,848 1,660,303 1,217,450 Net earnings attributable to Class A Units 24,465 26,642 20,069 Net earnings attributable to exchangeable other limited partnership units 856 1,266 2,778 Adjusted net earnings attributable to common unitholders – Diluted $ 1,693,169 $ 1,688,211 $ 1,240,297 Weighted average common units outstanding – Basic 575,798 536,335 532,326 Incremental weighted average effect on exchange of Class A Units 8,446 8,607 8,775 Incremental weighted average effect on exchange of other limited partnership units 891 1,403 1,835 Incremental weighted average effect of equity awards of Prologis, Inc. 5,104 5,955 3,730 Weighted average common units outstanding – Diluted (2) 590,239 552,300 546,666 Net earnings per unit attributable to common unitholders: Basic $ 2.90 $ 3.10 $ 2.29 Diluted $ 2.87 $ 3.06 $ 2.27 (1) The exchangeable limited partnership units include the units as discussed in Note 11. Earnings allocated to the exchangeable OP units not held by the Parent have been included in the numerator and exchangeable common units have been included in the denominator for the purpose of computing diluted earnings per share for all periods as the per share and unit amount is the same. (2) Our total weighted average potentially dilutive shares and units outstanding for the years ended December 31 consisted of the following: 2018 2017 2016 Class A Units 8,446 8,607 8,775 Other limited partnership units 891 1,403 1,835 Equity awards 8,175 9,183 8,444 Prologis, L.P. 17,512 19,193 19,054 Common limited partnership units 8,431 5,935 6,223 Prologis, Inc. 25,943 25,128 25,277

Financial Instruments and Fai_2

Financial Instruments and Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of Fair Value of Derivative Financial Instruments	The following table presents the fair value of our derivative financial instruments recognized within Other Assets Other Liabilities 2018 2017 Asset Liability Asset Liability Undesignated derivatives Foreign currency contracts Forwards Brazilian real $ 80 $ - $ - $ - British pound sterling 2,266 324 2,440 8,103 Canadian dollar 3,336 53 - 1,698 Euro 7,895 1,922 2 14,234 Japanese yen 3,334 1,318 6,474 931 Mexican peso 159 - - - Interest rate swaps U.S. dollar 27 - - - Designated derivatives Foreign currency contracts Net investment hedges Brazilian real - 3,165 - - British pound sterling - 949 - - Canadian dollar 5,634 - - 7,263 Interest rate swaps Cash flow hedges Canadian dollar - - 10,223 - Euro - 428 - - Total fair value of derivatives $ 22,731 $ 8,159 $ 19,139 $ 32,229
Summary of Undesignated Financial Instruments Exercised and Realized and Unrealized Gains (Losses) in Foreign Currency and Derivative Gains (Losses) Net	The following table summarizes the undesignated derivative financial instruments exercised and associated realized gains (losses) and unrealized gains (losses) in Foreign Currency and Derivative Gains (Losses), Net 2018 2017 2016 Exercised contracts 89 44 49 Realized gains (losses) on the matured, expired or settled contracts $ (3 ) $ 13 $ 3 Unrealized gains (losses) on the change in fair value of outstanding contracts $ 29 $ (51 ) $ 19
Summary of Activity in Interest Rate Swaps	The following table summarizes the activity of our interest rate swaps designated as cash flow hedges for the years ended December 31 2018 2017 2016 CAD EUR USD CAD CAD JPY Notional amounts at January 1 $ 271 $ - $ - $ 271 $ 271 $ 925 New contracts (1) - 500 300 - - - Matured, expired or settled contracts (2) (3) (271 ) - (300 ) - - (925 ) Notional amounts at December 31 $ - $ 500 $ - $ 271 $ 271 $ - (1) During 2018, we entered into two interest rate swap contracts with an aggregated notional amount of €400.0 million ( (2) During 2018, we repaid CAD 201.4 million ($158.9 million) on our 2015 Canadian Term Loan. At that time, we settled the interest rate swaps related to the 2015 Canadian Term Loan as we determined it was no longer probable that we would continue to have the future cash flows as originally hedged. As a result, the $12.5 million gain in AOCI/L Interest (3) During 2016, we entered into the 2016 Yen Term Loan and repaid our 2014, 2015 and 2016 Japanese yen term loans. At that time, we settled the outstanding contracts related to the previously outstanding term loans for $26.3 million. The fair value of the contracts that qualified for hedge accounting at the date of repayment was recorded to AOCI/L Interest Expense AOCI/L
Summary of Debt and Accrued Interest, Designated as Nonderivative Financial Instrument	The following table summarizes our debt and accrued interest, designated as a hedge of our net investment in international subsidiaries at December 31 (in millions): 2018 2017 2016 British pound sterling $ 269 $ 436 $ - Euro $ 2,645 $ 3,620 $ 3,403
Summary of Recognized Unrealized Gains (Losses) in Foreign Currency and Derivative Gains (Losses) Net on Remeasurement of Unhedged Portion of Debt and Accrued Interest	The following table summarizes the recognized unrealized gains (losses) in Foreign Currency and Derivative Gains (Losses), Net 2018 2017 Unrealized gains (losses) on the unhedged portion $ 96 $ (23 ) There were no unrealized gains or losses recognized during the year ended December 31, 2016.
Summary of Changes in Other Comprehensive Income (Loss)	The following table presents these changes in Other Comprehensive Income (Loss) 2018 2017 2016 Derivative net investment hedges $ 26,457 $ (12,762 ) $ 55,460 Nonderivative net investment hedges 151,083 (477,755 ) 112,591 Cumulative translation adjustment (368,130 ) 553,972 (304,009 ) Total foreign currency translation gains (losses), net $ (190,590 ) $ 63,455 $ (135,958 ) Cash flow hedges (1) $ (5,815 ) $ 12,726 $ (551 ) Our share of derivatives from unconsolidated co-investment ventures 4,492 9,865 (798 ) Total unrealized gains (losses) on derivative contracts, net $ (1,323 ) $ 22,591 $ (1,349 ) Total change in other comprehensive income (loss) $ (191,913 ) $ 86,046 $ (137,307 ) (1) We estimate an additional expense of $4.2 million will be reclassified to Interest Expense
Carrying Amounts and Estimated Fair Values of Debt	The following table reflects the carrying amounts and estimated fair values of our debt at December 31 (in thousands): 2018 2017 Carrying Value Fair Value Carrying Value Fair Value Credit Facilities $ 50,500 $ 50,513 $ 317,392 $ 317,496 Senior notes 8,304,147 8,606,864 6,067,277 6,537,100 Term loans and unsecured other 1,921,428 1,946,335 2,060,491 2,075,002 Secured mortgage 813,740 849,417 967,471 1,026,197 Total $ 11,089,815 $ 11,453,129 $ 9,412,631 $ 9,955,795
Undesignated Derivatives [Member]
Foreign Currency Contracts Activity	The following table summarizes the activity of our undesignated foreign currency contracts for the years ended December 31 (in millions, except for weighted average forward rates and number of active contracts): 2018 2017 2016 BRL CAD EUR GBP JPY Other CAD EUR GBP JPY EUR GBP JPY Other Notional amounts at January 1 $ - $ 56 $ 233 $ 132 $ 153 $ - $ 38 $ 197 $ 78 $ 144 $ 310 $ 148 $ 109 $ 50 New contracts 324 28 252 55 102 99 41 143 151 75 413 - 146 15 Matured, expired or settled contracts (319 ) (29 ) (171 ) (69 ) (78 ) (99 ) (23 ) (107 ) (97 ) (66 ) (526 ) (70 ) (111 ) (27 ) Notional amounts at December 31 $ 5 $ 55 $ 314 $ 118 $ 177 $ - $ 56 $ 233 $ 132 $ 153 $ 197 $ 78 $ 144 $ 38 Weighted average forward rate at December 31 3.74 1.28 1.21 1.32 105.17 - 1.29 1.17 1.29 106.25 1.13 1.54 107.68 - Active contracts at December 31 1 24 35 24 34 - 24 29 20 34 24 8 30 16
Designated As Hedging Instrument [Member]
Foreign Currency Contracts Activity	The following table summarizes the activity of our foreign currency contracts designated as net investment hedges for the years ended December 31 2018 2017 2016 BRL CAD EUR GBP CAD GBP CAD GBP JPY Notional amounts at January 1 $ - $ 99 $ - $ - $ 100 $ 46 $ - $ 386 $ - New contracts 1,568 100 1,053 127 99 127 100 131 99 Matured, expired or settled contracts (1,108 ) (99 ) (1,053 ) - (100 ) (173 ) - (471 ) (99 ) Notional amounts at December 31 $ 460 $ 100 $ - $ 127 $ 99 $ - $ 100 $ 46 $ - Weighted average forward rate at December 31 3.91 1.28 - 1.28 1.34 - 1.33 1.51 - Active contracts at December 31 1 2 - 2 2 - 2 2 -

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Reporting, Reconciliation of Revenues, Operating Income and Assets	The following reconciliations are presented in thousands: Years Ended December 31, 2018 2017 2016 Revenues: Real estate operations segment: U.S. $ 2,173,279 $ 2,025,184 $ 2,040,308 Other Americas 119,954 84,789 58,519 Europe 54,405 73,708 75,602 Asia 50,511 60,564 55,144 Total real estate operations segment 2,398,149 2,244,245 2,229,573 Strategic capital segment: U.S. 74,618 176,720 39,360 Other Americas 32,434 28,494 22,799 Europe 174,898 106,862 186,652 Asia 124,350 61,813 54,751 Total strategic capital segment 406,300 373,889 303,562 Total revenues 2,804,449 2,618,134 2,533,135 Segment net operating income: Real estate operations segment: U.S. (1) 1,621,665 1,519,164 1,520,571 Other Americas 89,044 58,842 38,114 Europe 34,807 51,277 54,406 Asia 38,425 33,234 33,283 Total real estate operations segment 1,783,941 1,662,517 1,646,374 Strategic capital segment: U.S. (1) 4,712 106,471 (1,622 ) Other Americas 19,874 16,811 12,777 Europe 136,240 68,127 144,132 Asia 88,434 27,339 19,769 Total strategic capital segment 249,260 218,748 175,056 Total segment net operating income 2,033,201 1,881,265 1,821,430 Reconciling items: General and administrative expenses 238,985 231,059 222,067 Depreciation and amortization expenses 947,214 879,140 930,985 Operating income 847,002 771,066 668,378 Earnings from unconsolidated entities, net 298,260 248,567 206,307 Interest expense (229,141 ) (274,486 ) (303,146 ) Interest and other income, net 14,663 13,731 8,101 Gains on real estate transactions, net 840,996 1,182,965 757,398 Foreign currency and derivative gains (losses), net 117,096 (57,896 ) 7,582 Gains (losses) on early extinguishment of debt, net (2,586 ) (68,379 ) 2,484 Earnings before income taxes $ 1,886,290 $ 1,815,568 $ 1,347,104 December 31, 2018 2017 Segment assets: Real estate operations segment: U.S. $ 27,666,200 $ 19,058,610 Other Americas 1,712,862 1,767,385 Europe 1,040,061 1,008,340 Asia 1,012,253 1,083,764 Total real estate operations segment 31,431,376 22,918,099 Strategic capital segment (2): U.S. 15,802 16,818 Europe 25,280 25,280 Asia 455 544 Total strategic capital segment 41,537 42,642 Total segment assets 31,472,913 22,960,741 Reconciling items: Investments in and advances to unconsolidated entities 5,745,294 5,496,450 Assets held for sale or contribution 622,288 342,060 Notes receivable backed by real estate - 34,260 Cash and cash equivalents 343,856 447,046 Other assets 233,313 200,518 Total reconciling items 6,944,751 6,520,334 Total assets $ 38,417,664 $ 29,481,075 (1) This includes compensation and personnel costs for employees who were located in the U.S. but also support other regions. (2) Represents management contracts and goodwill recorded in connection with business combinations associated with the Strategic Capital segment. Goodwill was $25.3 million at December 31, 2018 and 2017.

Selected Quarterly Financial _2

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	The following table details our selected quarterly financial data (in thousands, except per share and unit data): Three Months Ended, Prologis, Inc. March 31, June 30, September 30, December 31, 2018: Rental revenues $ 427,901 $ 426,549 $ 476,865 $ 527,574 Rental recoveries $ 128,042 $ 118,130 $ 132,109 $ 151,621 Total revenues $ 693,656 $ 621,276 $ 682,432 $ 807,085 Rental expenses $ (142,941 ) $ (133,329 ) $ (147,184 ) $ (177,194 ) Operating income $ 237,107 $ 187,294 $ 181,521 $ 241,080 Consolidated net earnings $ 391,959 $ 364,991 $ 375,520 $ 690,490 Net earnings attributable to common stockholders $ 365,902 $ 334,611 $ 346,345 $ 596,568 Net earnings per share attributable to common stockholders – Basic (1) $ 0.69 $ 0.63 $ 0.60 $ 0.95 Net earnings per share attributable to common stockholders – Diluted (1) (2) $ 0.68 $ 0.62 $ 0.60 $ 0.94 2017: Rental revenues $ 439,884 $ 447,960 $ 416,427 $ 433,568 Rental recoveries $ 127,049 $ 128,417 $ 114,755 $ 117,081 Total revenues $ 629,155 $ 766,183 $ 602,874 $ 619,922 Rental expenses $ (152,656 ) $ (147,794 ) $ (128,735 ) $ (140,338 ) Operating income $ 161,886 $ 275,272 $ 175,491 $ 158,417 Consolidated net earnings $ 220,689 $ 287,980 $ 913,417 $ 338,873 Net earnings attributable to common stockholders $ 203,255 $ 266,943 $ 876,218 $ 295,515 Net earnings per share attributable to common stockholders – Basic (1) $ 0.38 $ 0.50 $ 1.65 $ 0.56 Net earnings per share attributable to common stockholders – Diluted (1) (2) $ 0.38 $ 0.50 $ 1.63 $ 0.55 Prologis, L.P. 2018: Rental revenues $ 427,901 $ 426,549 $ 476,865 $ 527,574 Rental recoveries $ 128,042 $ 118,130 $ 132,109 $ 151,621 Total revenues $ 693,656 $ 621,276 $ 682,432 $ 807,085 Rental expenses $ (142,941 ) $ (133,329 ) $ (147,184 ) $ (177,194 ) Operating income $ 237,107 $ 187,294 $ 181,521 $ 241,080 Consolidated net earnings $ 391,959 $ 364,991 $ 375,520 $ 690,490 Net earnings attributable to common unitholders $ 376,425 $ 344,633 $ 356,765 $ 614,490 Net earnings per unit attributable to common unitholders – Basic (1) $ 0.69 $ 0.63 $ 0.60 $ 0.95 Net earnings per unit attributable to common unitholders – Diluted (1) (2) $ 0.68 $ 0.62 $ 0.60 $ 0.94 2017: Rental revenues $ 439,884 $ 447,960 $ 416,427 $ 433,568 Rental recoveries $ 127,049 $ 128,417 $ 114,755 $ 117,081 Total revenues $ 629,155 $ 766,183 $ 602,874 $ 619,922 Rental expenses $ (152,656 ) $ (147,794 ) $ (128,735 ) $ (140,338 ) Operating income $ 161,886 $ 275,272 $ 175,491 $ 158,417 Consolidated net earnings $ 220,689 $ 287,980 $ 913,417 $ 338,873 Net earnings attributable to common unitholders $ 208,878 $ 274,320 $ 900,331 $ 303,416 Net earnings per unit attributable to common unitholders – Basic (1) $ 0.38 $ 0.50 $ 1.65 $ 0.56 Net earnings per unit attributable to common unitholders – Diluted (1) (2) $ 0.38 $ 0.50 $ 1.63 $ 0.55 (1) Quarterly earnings per common share or unit amounts may not total to the annual amounts due to rounding and the changes in the number of weighted average common shares or units outstanding included in the calculation of basic and diluted shares or units. (2) Income allocated to the exchangeable OP units not held by the Parent has been included in the numerator and exchangeable OP units have been included in the denominator for the purpose of computing diluted earnings per share for all periods since the per share and unit is the same.

Description of the Business - A

Description of the Business - Additional Information (Detail) shares in Millions	12 Months Ended
	Dec. 31, 2018Segmentshares
Description Of Business And Basis Of Presentation [Line Items]
Number of reportable segments | Segment	2
Unaffiliated Investors and Certain Current and Former Directors and Officers [Member]
Description Of Business And Basis Of Presentation [Line Items]
Percentage of common limited partnership interest	2.91%
General Partner | Prologis Limited Partnership [Member]
Description Of Business And Basis Of Presentation [Line Items]
Percentage of ownership in operating partnership	97.09%
Preferred [Member] | Prologis Limited Partnership [Member]
Description Of Business And Basis Of Presentation [Line Items]
Percentage of ownership in operating partnership	100.00%
Class A Common [Member]
Description Of Business And Basis Of Presentation [Line Items]
Class of common limited partnership units designated as class A common units | shares	8.8

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)Ground	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Schedule Of Significant Accounting Policies [Line Items]
Consolidation percentage if not wholly owned but controlled	Less than 100% of the equity
Percentage of occupancy for stabilization	90.00%
Period after completion of construction for commencement of depreciation	1 year
Estimated useful lives	40 years
Weighted average lease term period	64 months
Depreciation commencement description	Depreciation on development buildings commences when the asset is ready for its intended use, which we define as the earlier of stabilization (90% occupied) or one year after completion of construction.
Threshold percentage to recognize gain or loss on transactions in consolidated entities	100.00%
Percentage of taxable income distribute	100.00%
Capitalized cost	$ 21.2	$ 23.8	$ 23.9
Number of ground and office space leases | Ground	130
Operating lease, asset	$ 400
Operating lease, liability	$ 400
Weighted average remaining lease term	27 years 10 months 24 days
Capital Improvements [Member] | Minimum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	5 years
Capital Improvements [Member] | Maximum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	7 years
Standard Tenant Improvements [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	10 years
Depreciable and Land Improvements [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	25 years
Operating Properties [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	30 years

DCT Transaction - Additional In

DCT Transaction - Additional Information (Detail) - DCT Transaction [Member] ft² in Millions, $ in Millions	Aug. 22, 2018USD ($)ft²aProperty
Business Acquisition [Line Items]
Business acquisition, date of acquisition agreement	Aug. 22, 2018
Business acquisition consideration transferred | $	$ 8,500
Business acquisition stock conversion ratio	1.02
Number of operating properties acquired | Property	408
Number of operating properties under development | Property	10
Square feet of properties | ft²	68
Area of properties under development | ft²	2.8
Acquisition of real estate properties, acres of land parcels | a	305
Area of properties land parcels with potential build out | ft²	4.5
Fair value of Prologis shares and units issued | $	$ 6,557
Transaction costs | $	$ 50

DCT Transaction - Schedule of A

DCT Transaction - Schedule of Aggregate Equity Consideration (Detail) - DCT Transaction [Member] $ / shares in Units, shares in Thousands, $ in Millions	Aug. 22, 2018USD ($)$ / sharesshares
Business Acquisition [Line Items]
Number of Prologis shares and units issued upon conversion of DCT shares and units at August 21, 2018 | shares	99,730
Multiplied by price of Prologis' common stock on August 21, 2018 | $ / shares	$ 65.75
Fair value of Prologis shares and units issued | $	$ 6,557

DCT Transaction - Schedule of P

DCT Transaction - Schedule of Purchase Price Allocated to DCT Net Tangible and Identifiable Intangible Assets Acquired and Liabilities Assumed (Detail) - DCT Transaction [Member] - USD ($) $ in Millions	Dec. 31, 2018	Aug. 22, 2018
Business Acquisition [Line Items]
Net investments in real estate		$ 8,362
Intangible assets, net of intangible liabilities		292
Cash and other assets		24
Debt	$ (1,900)	(1,863)
Accounts payable, accrued expenses and other liabilities		(143)
Noncontrolling interests		(65)
Total purchase price, including transaction costs		$ 6,607

Real Estate - Investments in Re

Real Estate - Investments in Real Estate Properties (Detail) ft² in Thousands, $ in Thousands	Dec. 31, 2018USD ($)ft²aBuilding	Dec. 31, 2017USD ($)ft²aBuilding
Real Estate Properties [Line Items]
Total investments in real estate properties	$ 34,586,987	$ 25,838,644
Less accumulated depreciation	4,656,680	4,059,348
Net investments in real estate properties	$ 29,930,307	$ 21,779,296
Improved Land [Member]
Real Estate Properties [Line Items]
Square feet of properties | ft²	0	0
Number of buildings | Building	0	0
Total investments in real estate properties	$ 8,044,888	$ 5,735,978
Building and Improvements [Member]
Real Estate Properties [Line Items]
Square feet of properties | ft²	354,762	294,811
Number of buildings | Building	1,858	1,525
Total investments in real estate properties	$ 22,587,267	$ 16,849,349
Development Portfolio, Including Cost of Land: Pre-stabilized [Member]
Real Estate Properties [Line Items]
Square feet of properties | ft²	8,709	7,345
Number of buildings | Building	30	22
Total investments in real estate properties	$ 828,064	$ 546,173
Properties Under Development [Member]
Real Estate Properties [Line Items]
Square feet of properties | ft²	27,715	22,216
Number of buildings | Building	70	63
Total investments in real estate properties	$ 1,314,737	$ 1,047,316
Land [Member]
Real Estate Properties [Line Items]
Square feet of properties | a	4,929	5,191
Total investments in real estate properties	$ 1,192,220	$ 1,154,383
Other Real Estate Investments [Member]
Real Estate Properties [Line Items]
Square feet of properties | ft²	0	0
Number of buildings | Building	0	0
Total investments in real estate properties	$ 619,811	$ 505,445

Real Estate - Investments in _2

Real Estate - Investments in Real Estate Properties (Parenthetical) (Detail)	Dec. 31, 2018aProperty	Dec. 31, 2017a
Land [Member]
Real Estate Properties [Line Items]
Square feet of properties | a	4,929	5,191
Assets Held for Sale or Contribution [Member]
Real Estate Properties [Line Items]
Number of operating properties acquired | Property	49

Real Estate - Summary of Acquis

Real Estate - Summary of Acquisition (Detail) ft² in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)ft²Property	Dec. 31, 2017USD ($)ft²Property	Dec. 31, 2016USD ($)ft²Property
Real Estate [Abstract]
Number of operating properties | Property	20	16	9
Square feet | ft²	4,757	6,859	1,823
Acquisition value of net investments in real estate properties | $	$ 1,008,718	$ 1,139,410	$ 411,706

Real Estate - Summary of Acqu_2

Real Estate - Summary of Acquisition (Parenthetical) (Detail) $ in Millions, R$ in Billions	1 Months Ended
	Aug. 31, 2017USD ($)aProperty	Aug. 31, 2017BRL (R$)aProperty	Dec. 31, 2018a	Dec. 31, 2017a	Dec. 31, 2016a
Land [Member]
Business Acquisition [Line Items]
Square feet			4,929	5,191
BRAZIL
Business Acquisition [Line Items]
Payment to acquire interest in joint venture	$ 381.7	R$ 1.2
BRAZIL | Land [Member]
Business Acquisition [Line Items]
Square feet	531	531
BRAZIL | Prestabilized Properties [Member]
Business Acquisition [Line Items]
Number of buildings | Property	2	2
BRAZIL | Operating Properties [Member]
Business Acquisition [Line Items]
Number of buildings | Property	12	12
Acquisitions of Properties from Third Parties [Member] | Land [Member]
Business Acquisition [Line Items]
Square feet			1,210	1,392	776

Real Estate - Summary of Dispos

Real Estate - Summary of Dispositions (Detail) ft² in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)ft²Property	Dec. 31, 2017USD ($)ft²Property	Dec. 31, 2016USD ($)ft²Property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square feet | ft²	4,757	6,859	1,823
Total gains on real estate transactions, net	$ 840,996	$ 1,182,965	$ 757,398
Continuing Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total gains on contributions and dispositions, net	$ 840,996	$ 1,121,745	$ 621,109
Continuing Operations [Member] | Contributions to unconsolidated co-investment ventures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of buildings | Property	40	222	35
Square feet | ft²	13,115	48,171	11,624
Net proceeds	$ 1,511,429	$ 3,201,986	$ 1,231,878
Gains on contributions, dispositions, revaluations or redemptions, net	$ 459,107	$ 847,034	$ 267,441
Continuing Operations [Member] | Dispositions to Third Parties [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of buildings | Property	78	110	172
Square feet | ft²	15,447	17,147	20,360
Net proceeds	$ 1,248,487	$ 1,281,501	$ 1,760,048
Gains on contributions, dispositions, revaluations or redemptions, net	381,889	274,711	353,668
Continuing Operations [Member] | Revaluation of equity investments upon acquisition of controlling interest and redemption of investment in co-investment ventures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gains on contributions, dispositions, revaluations or redemptions, net	0	61,220	0
Continuing Operations [Member] | Redemptions of investments in co-investment ventures [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gains on contributions, dispositions, revaluations or redemptions, net	$ 0	$ 0	$ 136,289

Real Estate - Summary of Disp_2

Real Estate - Summary of Dispositions (Parenthetical) (Detail) - Prologis Targeted U S Logistics Fund [Member] ft² in Millions, $ in Millions	Dec. 31, 2017USD ($)	Jul. 31, 2017USD ($)ft²Property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of operating properties contributed | Property		190
Square feet | ft²		37.1
Secured Debt | $	$ 956	$ 956

Real Estate - Additional Inform

Real Estate - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Real Estate Properties [Line Items]
Weighted average lease term remaining	52 months
Minimum lease payments on leases periods		Greater than one year
Minimum [Member]
Real Estate Properties [Line Items]
Operating leases lease term	1 year
Maximum [Member]
Real Estate Properties [Line Items]
Operating leases lease term	90 years

Real Estate - Future Minimum Re

Real Estate - Future Minimum Rental Payments under Non-Cancelable Operating Leases (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Real Estate [Abstract]
2,019	$ 2,006,475
2,020	1,867,253
2,021	1,589,102
2,022	1,278,281
2,023	990,970
Thereafter	3,293,320
Total	$ 11,025,401

Real Estate - Operating Propert

Real Estate - Operating Properties and Leases (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Real Estate [Abstract]
2,019	$ 38,769
2,020	38,267
2,021	34,307
2,022	32,312
2,023	30,180
Thereafter	670,147
Total	$ 843,982

Unconsolidated Entities - Summa

Unconsolidated Entities - Summary of Remaining Equity Commitments (Detail) $ in Millions	Dec. 31, 2018USD ($)
Prologis Inc [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments	$ 242

Unconsolidated Entities - Infor

Unconsolidated Entities - Information About Investments in Co-investment Ventures by Property Funds (Parenthetical) (Detail) $ / shares in Units, shares in Millions, $ in Millions	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2018$ / shares	Dec. 31, 2018¥ / shares	Dec. 31, 2017USD ($)
Nippon Prologis REIT Inc [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Receivables from unconsolidated co-investment ventures | $	$ 122			$ 106.2
Units outstanding	0.3
Closing price of common stock | (per share)	$ 2,110		¥ 231,900
FIBRA Prologis [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Units outstanding	301.3
Closing price of common stock | (per share)	$ 1.54	$ 30.30

Unconsolidated Entities - Sum_2

Unconsolidated Entities - Summary of Investments in and Advances to our Unconsolidated Entities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated entities	$ 5,745,294	$ 5,496,450
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated entities	5,407,838	5,274,702
Other Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated entities	$ 337,456	$ 221,748

Unconsolidated Entities - Inf_2

Unconsolidated Entities - Information About Investments in Co-investment Ventures by Property Funds (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Investment in and Advances to unconsolidated investees	$ 5,745,294	$ 5,496,450
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Investment in and Advances to unconsolidated investees	$ 5,407,838	$ 5,274,702
Prologis Targeted U S Logistics Fund [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	27.40%	28.20%
Investment in and Advances to unconsolidated investees	$ 1,456,427	$ 1,383,021
FIBRA Prologis [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	46.70%	46.30%
Investment in and Advances to unconsolidated investees	$ 536,377	$ 533,941
Prologis European Logistics Partners [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	50.00%	50.00%
Investment in and Advances to unconsolidated investees	$ 1,517,115	$ 1,766,075
Prologis European Logistics Fund [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	27.90%	26.30%
Investment in and Advances to unconsolidated investees	$ 1,198,904	$ 1,017,361
Prologis China Logistics Venture [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	15.00%	15.00%
Investment in and Advances to unconsolidated investees	$ 141,071	$ 116,890
Nippon Prologis REIT Inc [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	15.10%	15.10%
Investment in and Advances to unconsolidated investees	$ 472,035	$ 406,568
Prologis UK Logistics Venture [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	15.00%	15.00%
Investment in and Advances to unconsolidated investees	$ 68,002	$ 29,382
Prologis Brazil Logistics Partners Fund I [Member] | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Variable Interest Entities For Loans To Commercial Borrowers [Line Items]
Ownership Percentage in property fund	10.00%	10.00%
Investment in and Advances to unconsolidated investees	$ 17,907	$ 21,464

Unconsolidated Entities - Addit

Unconsolidated Entities - Additional Information (Detail) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2019ft²aProperty	Dec. 31, 2018USD ($)ft²Property	Dec. 31, 2017ft²Property	Dec. 31, 2016ft²
Schedule Of Equity Method Investments [Line Items]
Square feet | ft²		4,757,000	6,859,000	1,823,000
Prologis Inc [Member]
Schedule Of Equity Method Investments [Line Items]
Remaining equity commitments | $		$ 242
Expiration date for remaining commitments range start		2,020
Expiration date for remaining commitments range end		2,024
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Number of operating properties contributed | Property		1,569	1,559
Subsequent Event [Member] | Prologis Brazil Logistics Venture | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Number of operating properties contributed | Property	14
Square feet | ft²	6,900,000
Ownership Percentage in property fund	20.00%
Subsequent Event [Member] | Land [Member] | Prologis Brazil Logistics Venture | Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Square feet | a	371

Unconsolidated Entities - Sum_3

Unconsolidated Entities - Summary of Strategic Capital Revenues Recognized in Consolidated Statements of Income Related to Co-Investment Ventures (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Equity Method Investments [Line Items]
Total revenues		$ 807,085	$ 682,432	$ 621,276	$ 693,656	$ 619,922	$ 602,874	$ 766,183	$ 629,155	$ 2,804,449	$ 2,618,134	$ 2,533,135
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Recurring fees										230,746	195,513	174,315
Transactional fees										55,816	48,225	38,110
Promote revenues										116,290	127,519	88,750
Total revenues	[1]									$ 402,852	$ 371,257	$ 301,175
[1]	These amounts exclude strategic capital revenues from other ventures.

Unconsolidated Entities - Sum_4

Unconsolidated Entities - Summary of Operating Information and Financial Position of Unconsolidated Co-investment Ventures (Detail) $ in Thousands, ft² in Millions		12 Months Ended
		Dec. 31, 2018USD ($)ft²PropertyVenture	Dec. 31, 2017USD ($)ft²PropertyVenture	Dec. 31, 2016USD ($)
Schedule Of Equity Method Investments [Line Items]
Our earnings from unconsolidated co-investment ventures, net		$ 298,260	$ 248,567	$ 206,307
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		8	8
Number of buildings | Property		1,569	1,559
Square feet | ft²		340	332
Total assets		$ 29,557,000	$ 28,899,000
Third-party debt		8,148,000	8,079,000
Total liabilities		9,833,000	9,642,000
Our investment balance	[1]	5,408,000	5,275,000
Total revenues		2,451,000	2,180,000	1,943,000
Net earnings		810,000	798,000	562,000
Our earnings from unconsolidated co-investment ventures, net		$ 279,000	$ 234,000	192,000
Unconsolidated Co-Investment Ventures [Member] | U.S. [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		1	1
Number of buildings | Property		566	552
Square feet | ft²		91	88
Total assets		$ 7,303,000	$ 7,062,000
Third-party debt		2,094,000	2,313,000
Total liabilities		2,350,000	2,520,000
Our investment balance	[1]	1,457,000	1,383,000
Total revenues		676,000	533,000	395,000
Net earnings		150,000	139,000	57,000
Our earnings from unconsolidated co-investment ventures, net		$ 45,000	$ 33,000	10,000
Unconsolidated Co-Investment Ventures [Member] | Other Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		2	2
Number of buildings | Property		209	205
Square feet | ft²		39	37
Total assets		$ 2,137,000	$ 2,118,000
Third-party debt		838,000	756,000
Total liabilities		862,000	782,000
Our investment balance	[1]	554,000	555,000
Total revenues		217,000	245,000	242,000
Net earnings		63,000	71,000	71,000
Our earnings from unconsolidated co-investment ventures, net		$ 26,000	$ 26,000	27,000
Unconsolidated Co-Investment Ventures [Member] | Europe [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		3	3
Number of buildings | Property		669	707
Square feet | ft²		159	166
Total assets		$ 13,028,000	$ 13,586,000
Third-party debt		2,548,000	2,682,000
Total liabilities		3,615,000	3,655,000
Our investment balance	[1]	2,784,000	2,813,000
Total revenues		1,101,000	1,030,000	964,000
Net earnings		509,000	406,000	333,000
Our earnings from unconsolidated co-investment ventures, net		$ 193,000	$ 146,000	138,000
Unconsolidated Co-Investment Ventures [Member] | Asia [Member]
Schedule Of Equity Method Investments [Line Items]
Ventures | Venture		2	2
Number of buildings | Property		125	95
Square feet | ft²		51	41
Total assets		$ 7,089,000	$ 6,133,000
Third-party debt		2,668,000	2,328,000
Total liabilities		3,006,000	2,685,000
Our investment balance	[1]	613,000	524,000
Total revenues		457,000	372,000	342,000
Net earnings		88,000	182,000	101,000
Our earnings from unconsolidated co-investment ventures, net		$ 15,000	$ 29,000	$ 17,000
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[2]	28.30%	28.80%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | U.S. [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[2]	27.40%	28.20%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | Other Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[2]	44.40%	43.40%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | Europe [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[2]	33.20%	32.80%
Unconsolidated Co-Investment Ventures [Member] | Weighted Average [Member] | Asia [Member]
Schedule Of Equity Method Investments [Line Items]
Our weighted average ownership	[2]	15.10%	15.10%
[1]	Prologis’ investment balance is presented at our adjusted basis derived from the ventures’ U.S. GAAP information. The difference between our ownership interest of a venture’s equity and our investment balance at December 31, 2018 and 2017, results principally from four types of transactions: (i) deferred gains from the contribution of property to a venture prior to January 1, 2018 ($635.9 million and $667.3 million, respectively); (ii) recording additional costs associated with our investment in the venture ($94.4 million and $94.2 million, respectively); (iii) receivables, principally for fees and promotes ($166.7 million and $103.8 million, respectively); and (iv) customer security deposits retained subsequent to property contributions to NPR, as discussed above. For deferred gains from partial sales recorded prior to January 1, 2018, we recognize these gains over the lives of the underlying real estate properties or at the time of disposition to a third party.
[2]	Represents our weighted average ownership interest in all unconsolidated co-investment ventures based on each entity’s contribution of total assets, before depreciation, net of other liabilities.

Unconsolidated Entities - Sum_5

Unconsolidated Entities - Summary of Operating Information and Financial Position of Unconsolidated Co-investment Ventures (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investments And Joint Ventures [Abstract]
Deferred gain recognized from contribution of property to a venture	$ 635.9	$ 667.3
Additional costs associated with investment in a venture	94.4	94.2
Receivables from unconsolidated co-investment ventures	$ 166.7	$ 103.8

Assets Held for Sale or Contr_3

Assets Held for Sale or Contribution - Summary of Assets Held for Sale or Contribution (Detail) ft² in Thousands, $ in Thousands	Dec. 31, 2018USD ($)ft²Property	Dec. 31, 2017USD ($)ft²Property
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale or contribution	$ 622,288	$ 342,060
Total liabilities associated with assets held for sale or contribution – included in Other Liabilities	$ 12,972	$ 9,341
Disposal Group Held for Sale Not Discontinued Operations
Long Lived Assets Held For Sale [Line Items]
Number of operating properties | Property	57	22
Square feet | ft²	8,236	5,384

Other Assets and Other Liabil_3

Other Assets and Other Liabilities - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Acquired lease intangibles	$ 450,690	$ 202,087
Leasing commissions	346,852	306,461
Rent leveling	346,116	311,932
Fixed assets	112,211	109,823
Prepaid assets	108,581	102,179
Accounts receivable	107,141	85,118
Value added taxes receivable	97,047	84,339
Other notes receivable	35,338	35,406
Derivative assets	22,731	19,139
Management contracts	16,257	17,608
Deferred income taxes	8,767	13,533
Other	124,188	94,338
Total	$ 1,775,919	$ 1,381,963

Other Assets and Other Liabil_4

Other Assets and Other Liabilities - Schedule of Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Tenant security deposits	$ 240,467	$ 209,741
Environmental liabilities	88,863	25,728
Unearned rents	86,083	71,392
Acquired lease intangibles	76,087	24,769
Income tax liabilities	59,766	56,988
Indemnification liability	36,476	39,480
Value added taxes payable	11,037	10,081
Deferred income	10,088	15,754
Derivative liabilities	8,159	32,229
Other	149,420	173,737
Total	$ 766,446	$ 659,899

Other Assets and Other Liabil_5

Other Assets and Other Liabilities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Other Assets And Other Liabilities [Line Items]
Weighted average lease term remaining	52 months
DCT Transaction [Member]
Other Assets And Other Liabilities [Line Items]
Weighted average lease term remaining	44 months

Other Assets and Other Liabil_6

Other Assets and Other Liabilities - Schedule of Amortization Expense and Rental Revenues (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Amortization Expense 2019	$ 192,962
Amortization Expense 2020	153,851
Amortization Expense 2021	117,338
Amortization Expense 2022	88,279
Amortization Expense 2023	65,102
Amortization Expense Thereafter	137,245
Amortization Expense Totals	754,777
2,019	(28,646)
2,020	20,947
2,021	40,580
2,022	46,408
2,023	43,317
Thereafter	190,188
Total	$ 312,794

Debt - Debt Summary (Detail)

Debt - Debt Summary (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Weighted Average Interest Rate	2.70%	2.90%
Debt	$ 11,089,815	$ 9,412,631
Credit Facilities [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.40%	1.80%
Debt	$ 50,500	$ 317,392
Senior Notes [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	2.70%	3.00%
Debt	$ 8,304,147	$ 6,067,277
Term Loans and Unsecured Other [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.80%	1.70%
Debt	$ 1,921,428	$ 2,060,491
Secured Mortgage [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.10%	5.30%
Debt	$ 813,740	$ 967,471

Debt - Debt Summary (Parentheti

Debt - Debt Summary (Parenthetical) (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)Property	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Aug. 22, 2018USD ($)	Jan. 31, 2018
Debt Instrument [Line Items]
Debt		$ 11,089,815	$ 9,412,631
Repayments of assumed debt		1,800,000
Gains (losses) on early extinguishment of debt, net		$ (2,586)	(68,379)	$ 2,484
Number of operating properties securing mortgage debt of consolidated entities | Property		133
Number of prestabilized development property securing mortgage debt | Property		1
Mortgage notes, aggregate cost of secured properties		$ 2,200,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt		$ 8,304,147	6,067,277
Effective interest rate						0.00%
Senior Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Effective Interest Rate		0.00%
Debt instrument, maturity date		2020-01
Senior Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Effective Interest Rate		4.50%
Debt instrument, maturity date		2048-09
Secured Mortgage [Member]
Debt Instrument [Line Items]
Debt		$ 813,740	967,471
Secured Mortgage [Member] | Minimum [Member]
Debt Instrument [Line Items]
Effective Interest Rate		0.30%
Debt instrument, maturity date		2019-01
Secured Mortgage [Member] | Maximum [Member]
Debt Instrument [Line Items]
Effective Interest Rate		7.80%
Debt instrument, maturity date		2027-11
DCT Transaction [Member]
Debt Instrument [Line Items]
Debt Assumed		$ 1,900,000			$ 1,863,000
Weighted average interest rate including noncash premium		3.40%
Repayments of assumed debt		$ 1,800,000
DCT Transaction [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Repayments of assumed debt	$ 1,800,000
Prepayment penalties	48,700
Premium on early extinguishment of debt	46,500
Gains (losses) on early extinguishment of debt, net	$ (2,200)
GBP
Debt Instrument [Line Items]
Debt		$ 635,972	$ 671,522
Percentage of outstanding debt		5.80%	7.10%
CAD
Debt Instrument [Line Items]
Debt		$ 266,337	$ 451,080
Percentage of outstanding debt		2.40%	4.80%
EUR
Debt Instrument [Line Items]
Debt		$ 4,893,693	$ 3,839,422
Percentage of outstanding debt		44.10%	40.80%
JPY
Debt Instrument [Line Items]
Debt		$ 1,951,844	$ 1,306,380
Percentage of outstanding debt		17.60%	13.90%
USD
Debt Instrument [Line Items]
Debt		$ 3,341,969	$ 3,144,227
Percentage of outstanding debt		30.10%	33.40%

Debt - Additional Information (

Debt - Additional Information (Detail) $ in Thousands, ¥ in Billions	1 Months Ended			12 Months Ended
	Oct. 31, 2018	Aug. 31, 2018	Jul. 31, 2018	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jan. 31, 2019USD ($)	Dec. 31, 2018JPY (¥)	Aug. 22, 2018USD ($)
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 3,470,000	$ 3,490,000	$ 3,306,000
Repayments of assumed debt				1,800,000
Net loss recognized on early extinguishment of debt				400
Gains (losses) on early extinguishment of debt, net				(2,586)	$ (68,379)	$ 2,484
Senior Notes Outstanding				8,300,000
Prologis Euro Finance L L C [Member]
Debt Instrument [Line Items]
Percentage of ownership in operating partnership			100.00%
Prologis Yen Finance LLC [Member]
Debt Instrument [Line Items]
Percentage of ownership in operating partnership		100.00%
Prologis Sterling Finance LLC [Member]
Debt Instrument [Line Items]
Percentage of ownership in operating partnership	100.00%
Term Loan [Member]
Debt Instrument [Line Items]
Carrying Value of Debt Assumed				1,900,000
DCT Transaction [Member]
Debt Instrument [Line Items]
Repayments of assumed debt				1,800,000
Carrying Value of Debt Assumed				1,900,000					$ 1,863,000
Global Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 3,000,000
Debt Instrument maturity date				2020-04
Global Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity							$ 3,500,000
Ability to increase borrowing capacity subject to currency fluctuations and obtaining additional lender commitments							$ 4,500,000
Revolver [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 591,400				¥ 65
Debt Instrument maturity date				2021-02
Credit facility current borrowing capacity				$ 454,900				¥ 50

Debt - Credit Facilities (Detai

Debt - Credit Facilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Weighted average daily interest rate	3.10%	1.30%	1.40%
Weighted average daily borrowings	$ 253	$ 111	$ 128
Maximum borrowings outstanding at any month-end	485	317	307
Aggregate lender commitments	3,470	3,490	3,306
Borrowings outstanding	51	317	35
Outstanding letters of credit	31	33	36
Current availability	$ 3,388	$ 3,140	$ 3,235

Debt - Summary of Issuances of

Debt - Summary of Issuances of Senior Notes (Detail) € in Thousands, ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018JPY (¥)	Dec. 31, 2018EUR (€)
Debt Instrument [Line Items]
Principal Amount	$ 11,161,326
January 2018 Senior Notes [Member] | EUR
Debt Instrument [Line Items]
Stated interest rate, Description	Euribor + 0.3%
Stated interest rate	0.30%
Debt instrument, maturity date	2020-01
Initial Borrowing Date	2018-01
Principal Amount	$ 494,180		€ 400,000
June 2018 Senior Notes [Member] | USD
Debt Instrument [Line Items]
Initial Borrowing Date	2018-06
Principal Amount	$ 700,000
June 2018 Senior Notes Tranche One [Member] | USD
Debt Instrument [Line Items]
Stated Interest Rate	3.90%	3.90%	3.90%
Debt instrument, maturity date	2028-09
June 2018 Senior Notes Tranche Two [Member] | USD
Debt Instrument [Line Items]
Stated Interest Rate	4.40%	4.40%	4.40%
Debt instrument, maturity date	2048-09
July 2018 Senior Notes [Member] | EUR
Debt Instrument [Line Items]
Stated Interest Rate	1.90%	1.90%	1.90%
Debt instrument, maturity date	2029-01
Initial Borrowing Date	2018-07
Principal Amount	$ 818,720		€ 700,000
September 2018 Senior Notes [Member] | JPY
Debt Instrument [Line Items]
Initial Borrowing Date	2018-09
Principal Amount	$ 488,714	¥ 55,100,000
September 2018 Senior Notes Tranche One [Member] | JPY
Debt Instrument [Line Items]
Stated Interest Rate	0.70%	0.70%	0.70%
Debt instrument, maturity date	2025-09
September 2018 Senior Notes Tranche Two [Member] | JPY
Debt Instrument [Line Items]
Stated Interest Rate	1.50%	1.50%	1.50%
Debt instrument, maturity date	2038-09

Debt - Summary of Outstanding T

Debt - Summary of Outstanding Term Loans (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018JPY (¥)	Dec. 31, 2018CAD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 3,470,000,000			$ 3,490,000,000	$ 3,306,000,000
Debt issuance costs, net	(46,283,000)
Total	51,000,000			317,000,000	$ 35,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Subtotal	1,917,042,000			2,057,987,000
Debt issuance costs, net	(8,230,000)			(11,042,000)
Total	$ 1,908,812,000			2,046,945,000
2016 Yen Term Loan [Member] | JPY
Debt Instrument [Line Items]
Initial Borrowing Date	Aug. 31, 2016
Credit facility maximum borrowing capacity	$ 909,813,000	¥ 100,000,000,000
Subtotal	$ 909,813,000			1,065,965,000
Interest Rate, Description	Yen LIBOR + 0.7%
Interest rate	0.70%
2017 Term Loan [Member] | Other Currency [Member]
Debt Instrument [Line Items]
Initial Borrowing Date	Jun. 30, 2014
Credit facility maximum borrowing capacity	$ 500,000,000
Subtotal	$ 500,000,000			500,000,000
Interest Rate, Description	LIBOR + 0.9%
Interest rate	0.90%
Debt Instrument maturity date	2020-05
March 2017 Yen Term Loan [Member] | JPY
Debt Instrument [Line Items]
Initial Borrowing Date	Mar. 31, 2017
Credit facility maximum borrowing capacity	$ 109,178,000	12,000,000,000
Subtotal	$ 109,178,000			106,597,000
2015 Canadian Term Loan [Member] | CAD
Debt Instrument [Line Items]
Initial Borrowing Date	Dec. 31, 2015
Credit facility maximum borrowing capacity	$ 125,107,000		$ 170,506,000
Subtotal	$ 125,107,000			296,595,000
Interest Rate, Description	CDOR + 0.9%
Interest rate	0.90%
Debt Instrument maturity date	2023-02
October 2017 Yen Term Loan [Member] | JPY
Debt Instrument [Line Items]
Initial Borrowing Date	Oct. 31, 2017
Credit facility maximum borrowing capacity	$ 90,981,000	¥ 10,000,000,000
Subtotal	$ 90,981,000			88,830,000
Interest rate, fixed	0.90%	0.90%	0.90%
Debt Instrument maturity date	2032-10
December 2018 Yen Term [Member] | JPY
Debt Instrument [Line Items]
Initial Borrowing Date	Dec. 31, 2018
Credit facility maximum borrowing capacity	$ 181,963,000	¥ 20,000,000,000
Subtotal	$ 181,963,000			$ 0
Interest Rate, Description	1.2% and Yen LIBOR + 0.7%
March 2017 Yen Term Loan Tranche One [Member] | JPY
Debt Instrument [Line Items]
Interest rate, fixed	0.90%	0.90%	0.90%
Debt Instrument maturity date	2027-03
March 2017 Yen Term Loan Tranche Two [Member] | JPY
Debt Instrument [Line Items]
Interest rate, fixed	1.00%	1.00%	1.00%
Debt Instrument maturity date	2028-03
December 2018 Yen Term Loan Tranche One [Member] | JPY
Debt Instrument [Line Items]
Interest rate, fixed	1.20%	1.20%	1.20%
Debt Instrument maturity date	2031-12
December 2018 Yen Term Loan Tranche Two [Member] | JPY
Debt Instrument [Line Items]
Interest rate	0.70%
Debt Instrument maturity date	2033-06
2016 Yen Term Loan Tranche One [Member] | JPY
Debt Instrument [Line Items]
Debt Instrument maturity date	2022-08
2016 Yen Term Loan Tranche Two [Member] | JPY
Debt Instrument [Line Items]
Debt Instrument maturity date	2023-08

Debt - Summary of Outstanding_2

Debt - Summary of Outstanding Term Loans (Parenthetical) (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2017USD ($)	May 31, 2017USD ($)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 3,470		$ 3,490		$ 3,306
2017 Term Loan [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 1,000
Repayments of debt	2,000		1,200
Debt reborrowed during period	2,000		$ 1,500
2015 Canadian Term Loan [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 158.9	$ 201.4

Debt - Long-Term Debt Maturitie

Debt - Long-Term Debt Maturities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
2,019	$ 273,056
2,020	1,720,689
2,021	1,001,838
2,022	1,087,389
2,023	1,652,135
Thereafter	5,426,219
Subtotal	11,161,326
Premiums (discounts), net	(25,228)
Debt issuance costs, net	(46,283)
Total	11,089,815	$ 9,412,631
Credit Facilities [Member]
Debt Instrument [Line Items]
2,019	0
2,020	50,500
2,021	0
2,022	0
2,023	0
Thereafter	0
Subtotal	50,500
Premiums (discounts), net	0
Debt issuance costs, net	0
Total	50,500	317,392
Senior Notes [Member]
Debt Instrument [Line Items]
2,019	0
2,020	1,145,000
2,021	801,500
2,022	801,500
2,023	850,000
Thereafter	4,766,808
Subtotal	8,364,808
Premiums (discounts), net	(26,173)
Debt issuance costs, net	(34,488)
Total	8,304,147	6,067,277
Term Loans And Other Debt [Member]
Debt Instrument [Line Items]
2,019	868
2,020	500,723
2,021	778
2,022	273,786
2,023	762,887
Thereafter	390,616
Subtotal	1,929,658
Premiums (discounts), net	0
Debt issuance costs, net	(8,230)
Total	1,921,428	2,060,491
Secured Mortgages [Member]
Debt Instrument [Line Items]
2,019	272,188
2,020	24,466
2,021	199,560
2,022	12,103
2,023	39,248
Thereafter	268,795
Subtotal	816,360
Premiums (discounts), net	945
Debt issuance costs, net	(3,565)
Total	$ 813,740	$ 967,471

Debt - Interest Expense (Detail

Debt - Interest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Gross interest expense	$ 268,942	$ 328,228	$ 383,098
Amortization of debt premiums, net	(590)	(13,728)	(30,596)
Amortization of debt issuance costs, net	13,243	14,479	15,459
Interest expense before capitalization	281,595	328,979	367,961
Capitalized amounts	(52,454)	(54,493)	(64,815)
Net interest expense	229,141	274,486	303,146
Total cash paid for interest, net of receipts and amounts capitalized	$ 205,485	$ 278,313	$ 322,442

Debt - Activity Related to Repu

Debt - Activity Related to Repurchase of Debt and Net Loss on Early Extinguishment of Debt (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Original principal amount		$ 2,033,600
Cash purchase/repayment price		2,104,800
Losses on early extinguishment of debt	$ 2,586	68,379	$ (2,484)
Senior Notes [Member]
Debt Instrument [Line Items]
Original principal amount		1,495,300
Cash purchase/repayment price		1,566,500
Secured Mortgage debt [Member]
Debt Instrument [Line Items]
Original principal amount		538,300
Cash purchase/repayment price		$ 538,300

Stockholders' Equity of Prolo_3

Stockholders' Equity of Prologis Inc. - Additional Information (Detail)	Aug. 22, 2018shares	Dec. 31, 2018USD ($)Agentshares	Dec. 31, 2017	Dec. 31, 2016shares
Shareholders Equity [Line Items]
Common stock shares authorized to be issued		1,100,000,000
Common stock, shares authorized		1,000,000,000
Beneficial interest of outstanding shares		50.00%
Beneficial interest of outstanding shares by single person or persons acting as group		9.80%
Percentage of ownership restrictions		25.00%
Percentage of REIT taxable income computed without regard to the dividends paid deduction and net capital gains		90.00%
Series Q Preferred Stock [Member]
Shareholders Equity [Line Items]
Preferred stock dividend rate percentage		8.54%	8.54%
At the Market Offering [Member]
Shareholders Equity [Line Items]
Maximum proceeds from sale of stock | $		$ 750,000,000
Aggregate sales of stock remaining available | $		$ 535,200,000
Agents fee percentage		2.00%
Number of designated agents | Agent		6
Common Stock [Member]
Shareholders Equity [Line Items]
Issuance of common shares related to acquisition				0
DCT Transaction [Member] | Common Stock [Member]
Shareholders Equity [Line Items]
Issuance of common shares related to acquisition	96,200,000	96,179,000

Stockholders' Equity of Prolo_4

Stockholders' Equity of Prologis, Inc - Summary of Taxability of Common and Preferred Stock Dividends (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	[1]	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Ordinary income	$ 1.34		$ 1.23	$ 0.60
Qualified dividend	0.03		0.01	0.15
Capital gains	0.55		0.52	0.93
Total distribution	1.92		1.76	1.68
Series Q Preferred Stock [Member]
Class of Stock [Line Items]
Ordinary income	2.98		2.91	2.02
Qualified dividend	0.06		0.08	0.29
Capital gains	1.23		1.28	1.96
Total distribution	$ 4.27		$ 4.27	$ 4.27
[1]	Taxability for 2018 is estimated.

Partners' Capital of Prologis_2

Partners' Capital of Prologis, L.P. - Additional Information (Detail) - $ / shares shares in Millions	Aug. 22, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Shareholders Equity [Line Items]
Dividends paid		$ 1.92	$ 1.76	$ 1.68
Common Units
Shareholders Equity [Line Items]
Dividends per share entitled, issued in acquisition					$ 0.40
Common Units | DCT Transaction [Member]
Shareholders Equity [Line Items]
Common limited partnership units, shares	3.6
Class A Common [Member]
Shareholders Equity [Line Items]
Dividends per share entitled, issued in acquisition					$ 0.64665
Dividends paid		$ 2.58660	$ 2.58660	$ 2.58660
Class A units convertible into common limited partnership units		8.4	8.5
Limited partnership unit, redemption price per share		$ 43.11

Noncontrolling Interests - Addi

Noncontrolling Interests - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Prologis, L.P. [Member]
Noncontrolling Interest [Line Items]
Description of conversion rate	One share of common stock to one unit

Noncontrolling Interests - Nonc

Noncontrolling Interests - Noncontrolling Interest Summary (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Noncontrolling Interest [Line Items]
Operating Partnership noncontrolling interest		$ 2,836,469	$ 2,660,242
Noncontrolling interests		3,502,795	3,074,583
Total Assets		38,417,664	29,481,075
Total Liabilities		12,616,776	10,775,334
Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Total Assets		7,117,289	6,836,957
Total Liabilities		$ 145,927	$ 314,492
Prologis US Logistics Venture [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership Percentage		55.00%	55.00%
Operating Partnership noncontrolling interest		$ 2,697,095	$ 2,581,629
Total Assets		6,072,087	6,030,819
Total Liabilities		$ 92,782	$ 284,162
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Parent Company's Ownership	[1]	various	various
Operating Partnership noncontrolling interest	[1]	$ 139,374	$ 78,613
Total Assets	[1]	1,045,202	806,138
Total Liabilities	[1]	53,145	30,330
Prologis, L.P. [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		2,836,469	2,660,242
Total Assets		38,417,664	29,481,075
Total Liabilities		12,616,776	10,775,334
Prologis, L.P. [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Limited partners in Prologis, L.P.	[2],[3]	666,326	414,341
Total Assets	[2],[3]	0	0
Total Liabilities	[2],[3]	0	0
Prologis Inc [Member]
Noncontrolling Interest [Line Items]
Total Assets		7,117,289	6,836,957
Total Liabilities		145,927	314,492
Prologis Inc [Member] | Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests		$ 3,502,795	$ 3,074,583
[1]	Includes our two partnerships that have issued limited partnership units to third parties, as discussed above, along with various other consolidated entities. The limited partnership units outstanding at December 31, 2018 and 2017 were exchangeable into cash or, at our option, 0.7 million and 1.0 million shares of the Parent’s common stock, respectively.
[2]	At December 31, 2018 and 2017, excluding the Class A Units, there were limited partnership units in the OP that were exchangeable into cash or, at our option, 7.2 million and 4.1 million shares of the Parent’s common stock, respectively. Also included are the vested OP Long-Term Incentive Plan Units associated with our long-term compensation plan. See further discussion of Long-Term Incentive Plan Units in Note 12.
[3]	We had 8.8 million and 8.9 million Class A Units that were convertible into 8.4 million and 8.5 million limited partnership units of the OP at December 31, 2018 and 2017, respectively.

Noncontrolling Interests - No_2

Noncontrolling Interests - Noncontrolling Interest Summary (Parenthetical) (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Class A Common [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units, exchanged	8.4	8.5
Units outstanding	8.8	8.9
Common Units
Noncontrolling Interest [Line Items]
Outstanding limited partnership units, exchanged	7.2	4.1
Other Consolidated Entities [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units, exchanged	0.7	1
Other Consolidated Entities [Member] | Common Stock [Member]
Noncontrolling Interest [Line Items]
Outstanding limited partnership units	0.7	1

Long-Term Compensation - Additi

Long-Term Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options outstanding	300,000
Stock options exercisable	300,000
Stock options outstanding, weighted average exercise price	$ 27.17
Stock options exercisable, weighted average exercise price	$ 27.17
Weighted average life	1 year 6 months
Aggregate intrinsic value of exercised options	$ 13,800	$ 28,600	$ 45,600
Options granted	0
Employer contribution for every dollar	0.50%
Percentage of employees annual compensation within the statutory compensation limit	6.00%
Vesting percentage on defined contribution plan	100.00%
Vesting period for acquired plan	1 year
Compensation cost related to employees contribution plans	$ 2,900	2,800	2,700
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Remaining compensation cost weighted average period	1 year 2 months 12 days
Grant date fair value of stock awards granted		38,500	32,500
Aggregate fair value		32,900	33,700
Compensation cost	$ 38,500
Long Term Incentive Plan Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value of stock awards granted		53,200	38,000
Aggregate fair value		28,300	18,800
LTIP Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Remaining compensation cost weighted average period	1 year 1 month 6 days
Compensation cost	$ 77,200
Maximum [Member] | Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
Minimum [Member] | Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
2012 Long Term Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common stocks are reserved for issuance	27,200,000
Common stock available for future issuance	15,900,000
Description of conversion rate	0
2012 Long Term Incentive Plan [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available to be granted for a single participant	1,500,000
Prologis Out-Performance Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Period	3 years
Outperformance hurdle, above MSCI U.S. REIT Index	1.00%
Performance pool as percentage of excess value, if outperformance hurdle is met	3.00%
Forfeited awards after seven years	7 years
Total remaining compensation cost related to the POP	$ 33,900
Remaining compensation cost weighted average period	3 years 2 months 12 days
Aggregate fair value	$ 23,300	$ 20,400	$ 26,600
Prologis Out-Performance Plan [Member] | 2016 – 2018 Performance Period [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash incentive award maximum	75,000
Prologis Out-Performance Plan [Member] | 2017 - 2019 Performance Period [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash incentive award maximum	$ 75,000
Prologis Out-Performance Plan [Member] | 2018 - 2020 Performance Periods [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Initial performance period	3 years
Holding period	3 years
Prologis Out-Performance Plan [Member] | 2018 - 2020 Performance Periods [Member] | Tranche 1 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights, percentage	20.00%
Prologis Out-Performance Plan [Member] | 2018 - 2020 Performance Periods [Member] | Tranche 2 (After Seven Year Cliff) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rights, percentage	80.00%
Vesting period	7 years
Prologis Out-Performance Plan [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of equity market capitalization	0.50%
Prologis Out-Performance Plan [Member] | Maximum [Member] | 2018 - 2020 Performance Periods [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash incentive award maximum	$ 100,000
Prologis Promote Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total compensation pool	40.00%

Long-Term Compensation - Assump

Long-Term Compensation - Assumptions Used for Each Grant Based on Year Granted (Detail) - Prologis Out-Performance Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk free interest rate	2.10%	1.50%	1.00%
Expected volatility	16.50%	22.20%	20.50%
Aggregate fair value	$ 23,300	$ 20,400	$ 26,600

Long-Term Compensation - Perfor

Long-Term Compensation - Performance Pool awarded (Detail) - Prologis Out-Performance Plan [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
2016 – 2018 Performance Period [Member] | Subsequent Event [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance pool	$ 75,000
Common stock shares	379
POP LTIP Units and LTIP Units	824
Grant date fair value	$ 62.38
2015 - 2017 Performance Periods [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance pool		$ 110,230
Common stock shares		582
POP LTIP Units and LTIP Units		1,170
Grant date fair value		$ 62.65
2014 – 2016 Performance Periods [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance pool			$ 62,220
Common stock shares			486
POP LTIP Units and LTIP Units			698
Grant date fair value			$ 52.53

Long-Term Compensation - RSU Aw

Long-Term Compensation - RSU Awards (Detail) - Restricted Stock Units (RSUs) [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Unvested Awards, Beginning Balance | shares	1,374
Granted | shares	761
Vested and distributed | shares	(787)
Forfeited | shares	(93)
Number of Unvested Awards, Ending Balance | shares	1,255
Weighted Average Grant Date Fair Value | $ / shares	$ 45.57
Weighted Average Grant Date Fair Value, Granted | $ / shares	61.20
Weighted Average Grant Date Fair Value, Vested and distributed | $ / shares	45.40
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	54.84
Weighted Average Grant Date Fair Value | $ / shares	$ 54.48

Long-Term Compensation - LTIP U

Long-Term Compensation - LTIP Units Awards (Detail) - Long Term Incentive Plan Units [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Beginning Balance	1,532
Vested LTIP Units	917
Vested POP LTIP Units	1,170
Conversion to common limited partnership units	(326)
Number of Shares, Ending Balance	3,293
Number of Unvested Awards, Beginning Balance	1,829
Granted	1,346
Forfeited	(81)
Vested LTIP Units	(917)
Number of Unvested Awards, Ending Balance	2,177
Weighted Average Grant Date Fair Value | $ / shares	$ 46.48
Unvested Weighted Average Grant Date Fair Value, Granted | $ / shares	61.36
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	48.23
Unvested Weighted Average Grant Date Fair Value, Vested LTIP Units | $ / shares	44.88
Weighted Average Grant Date Fair Value, Vested LTIP Units - POP | $ / shares	0
Weighted Average Gant Date Fair Value, Conversion to common limited partnership units | $ / shares	0
Weighted Average Grant Date Fair Value | $ / shares	$ 56.05

Income Taxes - Components of Ea

Income Taxes - Components of Earnings Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Domestic	$ 1,078,678	$ 1,207,503	$ 719,018
International	807,612	608,065	628,086
Earnings before income taxes	$ 1,886,290	$ 1,815,568	$ 1,347,104

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current income tax expense:
U.S. federal	$ 1,727	$ 214	$ 7,153
International	50,731	45,185	38,493
State and local	9,424	14,215	14,443
Total current income tax expense	61,882	59,614	60,089
Deferred income tax expense (benefit):
U.S. federal	(317)	2,533	(3,306)
International	1,765	(7,538)	(2,219)
Total deferred income tax expense (benefit)	1,448	(5,005)	(5,525)
Total income tax expense	$ 63,330	$ 54,609	$ 54,564

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Change in uncertain tax positions	$ 0	$ 0	$ 300,000
Cash paid for income taxes, net of refunds	$ 60,300,000	46,700,000	29,300,000
Effective corporate federal tax rate	21.00%
Liability for uncertain tax positions	$ 3,000,000	$ 3,000,000	$ 0

Income Taxes - Deferred Income

Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Gross deferred income tax assets:
NOL carryforwards	$ 336,485	$ 334,358
Basis difference – real estate properties	55,198	53,902
Basis difference – equity investments	5,448	2,567
Basis difference – intangibles	1,076	2,173
Section 163(j) interest limitation	4,771	26,280
Capital loss carryforward	1	10,566
Other – temporary differences	3,487	5,724
Total gross deferred income tax assets	406,466	435,570
Valuation allowance	(379,987)	(410,896)
Gross deferred income tax assets, net of valuation allowance	26,479	24,674
Gross deferred income tax liabilities:
Basis difference – real estate properties	69,157	63,246
Basis difference – equity investments	2,380	1,114
Other – temporary differences	2,941	769
Total gross deferred income tax liabilities	74,478	65,129
Net deferred income tax liabilities	$ 47,999	$ 40,455

Income Taxes - Summary of Opera

Income Taxes - Summary of Operating Loss Carryforwards (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Tax-effected NOL carryforward	$ 336,485	$ 334,358
U.S. [Member]
Operating Loss Carryforwards [Line Items]
Gross NOL carryforward	160,882
Tax-effected NOL carryforward	38,943
Valuation allowance	(37,516)
Net deferred tax asset – NOL carryforward	$ 1,427
Expiration periods	2022 – indefinite
Europe [Member]
Operating Loss Carryforwards [Line Items]
Gross NOL carryforward	$ 646,521
Tax-effected NOL carryforward	153,876
Valuation allowance	(145,460)
Net deferred tax asset – NOL carryforward	$ 8,416
Expiration periods	2019 – indefinite
Mexico [Member]
Operating Loss Carryforwards [Line Items]
Gross NOL carryforward	$ 358,070
Tax-effected NOL carryforward	110,152
Valuation allowance	(110,152)
Net deferred tax asset – NOL carryforward	$ 0
Mexico [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Expiration periods	2,019
Mexico [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Expiration periods	2,029
Japan [Member]
Operating Loss Carryforwards [Line Items]
Gross NOL carryforward	$ 115,176
Tax-effected NOL carryforward	22,517
Valuation allowance	(22,517)
Net deferred tax asset – NOL carryforward	$ 0
Japan [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Expiration periods	2,019
Japan [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Expiration periods	2,027
Other [Member]
Operating Loss Carryforwards [Line Items]
Gross NOL carryforward	$ 44,843
Tax-effected NOL carryforward	10,997
Valuation allowance	(8,794)
Net deferred tax asset – NOL carryforward	$ 2,203
Expiration periods	2019 – indefinite

Earnings Per Common Share or _3

Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic	$ 596,568	$ 346,345	$ 334,611	$ 365,902	$ 295,515	$ 876,218	$ 266,943	$ 203,255	$ 1,643,426	$ 1,641,931	$ 1,203,218
Net earnings attributable to exchangeable limited partnership units									49,743	46,280	37,079
Adjusted net earnings attributable to common stockholders – Diluted									$ 1,693,169	$ 1,688,211	$ 1,240,297
Weighted average common shares/units outstanding – Basic									567,367	530,400	526,103
Incremental weighted average effect on exchange of limited partnership units									17,768	15,945	16,833
Incremental weighted average effect of equity awards									5,104	5,955	3,730
Weighted average common shares/partnership units outstanding - Diluted									590,239	552,300	546,666
Net earnings per share/unit attributable to common stockholders/unitholders -
Basic	$ 0.95	$ 0.60	$ 0.63	$ 0.69	$ 0.56	$ 1.65	$ 0.50	$ 0.38	$ 2.90	$ 3.10	$ 2.29
Diluted	$ 0.94	$ 0.60	$ 0.62	$ 0.68	$ 0.55	$ 1.63	$ 0.50	$ 0.38	$ 2.87	$ 3.06	$ 2.27
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic									$ 1,692,313	$ 1,686,945	$ 1,237,519
Net earnings attributable to exchangeable limited partnership units									856	1,266	2,778
Adjusted net earnings attributable to common stockholders – Diluted									$ 1,693,169	$ 1,688,211	$ 1,240,297
Weighted average common shares/units outstanding – Basic									575,798	536,335	532,326
Incremental weighted average effect on exchange of Class A convertible units									8,446	8,607	8,775
Incremental weighted average effect on exchange of limited partnership units									891	1,403	1,835
Incremental weighted average effect of equity awards									5,104	5,955	3,730
Weighted average common shares/partnership units outstanding - Diluted									590,239	552,300	546,666
Net earnings per share/unit attributable to common stockholders/unitholders -
Basic									$ 2.90	$ 3.10	$ 2.29
Diluted									$ 2.87	$ 3.06	$ 2.27
Prologis, L.P. [Member] | Class A Common [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic									$ (24,465)	$ (26,642)	$ (20,069)
Adjusted net earnings attributable to common stockholders – Diluted									24,465	26,642	20,069
Prologis, L.P. [Member] | Common Units
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Net earnings attributable to common stockholders/unit holders - Basic									$ 1,667,848	$ 1,660,303	$ 1,217,450

Earnings Per Common Share or _4

Earnings Per Common Share or Unit - Computation of Basic and Diluted Earnings Per Share Unit (Parenthetical) (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potential dilutive shares and units outstanding	25,943	25,128	25,277
Prologis, L.P. [Member]
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Total weighted average potentially dilutive Class A Units	8,446	8,607	8,775
Total weighted average potentially dilutive other limited partnership units	891	1,403	1,835
Total weighted average potentially dilutive equity awards	8,175	9,183	8,444
Total weighted average potential dilutive shares and units outstanding	17,512	19,193	19,054
Total weighted average potential dilutive common limited partnership units	8,431	5,935	6,223

Financial Instruments and Fai_3

Financial Instruments and Fair Value Measurements - Schedule of Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives Fair Value [Line Items]
Asset	$ 22,731	$ 19,139
Liability	8,159	32,229
Undesignated Derivatives [Member] | Forwards [Member] | BRL
Derivatives Fair Value [Line Items]
Asset	80	0
Liability	0	0
Undesignated Derivatives [Member] | Forwards [Member] | GBP
Derivatives Fair Value [Line Items]
Asset	2,266	2,440
Liability	324	8,103
Undesignated Derivatives [Member] | Forwards [Member] | CAD
Derivatives Fair Value [Line Items]
Asset	3,336	0
Liability	53	1,698
Undesignated Derivatives [Member] | Forwards [Member] | EUR
Derivatives Fair Value [Line Items]
Asset	7,895	2
Liability	1,922	14,234
Undesignated Derivatives [Member] | Forwards [Member] | JPY
Derivatives Fair Value [Line Items]
Asset	3,334	6,474
Liability	1,318	931
Undesignated Derivatives [Member] | Forwards [Member] | MXN
Derivatives Fair Value [Line Items]
Asset	159	0
Liability	0	0
Undesignated Derivatives [Member] | Interest Rate Hedges [Member] | USD
Derivatives Fair Value [Line Items]
Asset	27	0
Liability	0	0
Designated As Hedging Instrument [Member] | Net Investment Hedges [Member] | BRL
Derivatives Fair Value [Line Items]
Asset	0	0
Liability	3,165	0
Designated As Hedging Instrument [Member] | Net Investment Hedges [Member] | GBP
Derivatives Fair Value [Line Items]
Asset	0	0
Liability	949	0
Designated As Hedging Instrument [Member] | Net Investment Hedges [Member] | CAD
Derivatives Fair Value [Line Items]
Asset	5,634	0
Liability	0	7,263
Designated As Hedging Instrument [Member] | Cash Flow Hedges [Member] | Interest Rate Hedges [Member] | CAD
Derivatives Fair Value [Line Items]
Asset	0	10,223
Liability	0	0
Designated As Hedging Instrument [Member] | Cash Flow Hedges [Member] | Interest Rate Hedges [Member] | EUR
Derivatives Fair Value [Line Items]
Asset	0	0
Liability	$ 428	$ 0

Financial Instruments and Fai_4

Financial Instruments and Fair Value Measurements - Summary of Undesignated Foreign Currency Forwards Activity (Detail) - Undesignated Derivatives [Member]	12 Months Ended
	Dec. 31, 2018USD ($)Derivative	Dec. 31, 2017USD ($)Derivative	Dec. 31, 2016USD ($)Derivative
BRL
Derivative [Line Items]
Notional amounts at January 1	$ 0
New contracts	324,000,000
Matured, expired or settled contracts	(319,000,000)
Notional amounts at December 31	$ 5,000,000	$ 0
Weighted average forward rate at December 31	3.74
Active contracts at December 31 | Derivative	1
CAD
Derivative [Line Items]
Notional amounts at January 1	$ 56,000,000	38,000,000
New contracts	28,000,000	41,000,000
Matured, expired or settled contracts	(29,000,000)	(23,000,000)
Notional amounts at December 31	$ 55,000,000	$ 56,000,000	$ 38,000,000
Weighted average forward rate at December 31	1.28	1.29
Active contracts at December 31 | Derivative	24	24
EUR
Derivative [Line Items]
Notional amounts at January 1	$ 233,000,000	$ 197,000,000	310,000,000
New contracts	252,000,000	143,000,000	413,000,000
Matured, expired or settled contracts	(171,000,000)	(107,000,000)	(526,000,000)
Notional amounts at December 31	$ 314,000,000	$ 233,000,000	$ 197,000,000
Weighted average forward rate at December 31	1.21	1.17	1.13
Active contracts at December 31 | Derivative	35	29	24
GBP
Derivative [Line Items]
Notional amounts at January 1	$ 132,000,000	$ 78,000,000	$ 148,000,000
New contracts	55,000,000	151,000,000	0
Matured, expired or settled contracts	(69,000,000)	(97,000,000)	(70,000,000)
Notional amounts at December 31	$ 118,000,000	$ 132,000,000	$ 78,000,000
Weighted average forward rate at December 31	1.32	1.29	1.54
Active contracts at December 31 | Derivative	24	20	8
JPY
Derivative [Line Items]
Notional amounts at January 1	$ 153,000,000	$ 144,000,000	$ 109,000,000
New contracts	102,000,000	75,000,000	146,000,000
Matured, expired or settled contracts	(78,000,000)	(66,000,000)	(111,000,000)
Notional amounts at December 31	$ 177,000,000	$ 153,000,000	$ 144,000,000
Weighted average forward rate at December 31	105.17	106.25	107.68
Active contracts at December 31 | Derivative	34	34	30
Other
Derivative [Line Items]
Notional amounts at January 1	$ 0	$ 38,000,000	$ 50,000,000
New contracts	99,000,000		15,000,000
Matured, expired or settled contracts	(99,000,000)		(27,000,000)
Notional amounts at December 31	$ 0	$ 0	$ 38,000,000
Weighted average forward rate at December 31	0		0
Active contracts at December 31 | Derivative	0		16

Financial Instruments and Fai_5

Financial Instruments and Fair Value Measurements - Summary of Undesignated Financial Instruments Exercised and Realized and Unrealized Gains (Losses) in Foreign Currency and Derivative Gains (Losses) Net (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)Contract	Dec. 31, 2017USD ($)Contract	Dec. 31, 2016USD ($)Contract
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Exercised contracts | Contract	89	44	49
Realized gains (losses) on the matured, expired or settled contracts	$ (3)	$ 13	$ 3
Unrealized gains (losses) on the change in fair value of outstanding contracts	$ 29	$ (51)	$ 19

Financial Instruments and Fai_6

Financial Instruments and Fair Value Measurements - Foreign Currency Contracts Activity (Detail) - Forwards [Member]	12 Months Ended
	Dec. 31, 2018USD ($)Derivative	Dec. 31, 2017USD ($)Derivative	Dec. 31, 2016USD ($)Derivative
BRL
Derivative [Line Items]
Notional amounts at January 1	$ 0
New contracts	1,568,000,000
Matured, expired or settled contracts	(1,108,000,000)
Notional amounts at December 31	$ 460,000,000	$ 0
Weighted average forward rate at December 31	3.91
Active contracts at December 31 | Derivative	1
CAD
Derivative [Line Items]
Notional amounts at January 1	$ 99,000,000	100,000,000	$ 0
New contracts	100,000,000	99,000,000	100,000,000
Matured, expired or settled contracts	(99,000,000)	(100,000,000)	0
Notional amounts at December 31	$ 100,000,000	$ 99,000,000	$ 100,000,000
Weighted average forward rate at December 31	1.28	1.34	1.33
Active contracts at December 31 | Derivative	2	2	2
EUR
Derivative [Line Items]
Notional amounts at January 1	$ 0
New contracts	1,053,000,000
Matured, expired or settled contracts	(1,053,000,000)
Notional amounts at December 31	$ 0	$ 0
Weighted average forward rate at December 31	0
Active contracts at December 31 | Derivative	0
GBP
Derivative [Line Items]
Notional amounts at January 1	$ 0	46,000,000	$ 386,000,000
New contracts	127,000,000	127,000,000	131,000,000
Matured, expired or settled contracts	0	(173,000,000)	(471,000,000)
Notional amounts at December 31	$ 127,000,000	$ 0	$ 46,000,000
Weighted average forward rate at December 31	1.28	0	1.51
Active contracts at December 31 | Derivative	2	0	2
JPY
Derivative [Line Items]
Notional amounts at January 1		$ 0	$ 0
New contracts			99,000,000
Matured, expired or settled contracts			(99,000,000)
Notional amounts at December 31			$ 0
Weighted average forward rate at December 31			0
Active contracts at December 31 | Derivative			0

Financial Instruments and Fai_7

Financial Instruments and Fair Value Measurements - Summary of Activity in Interest Rate Swaps (Detail) - Interest Rate Swaps [Member] - USD ($)		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CAD
Derivative [Line Items]
Notional amounts at January 1		$ 271,000,000	$ 271,000,000	$ 271,000,000
New contracts	[1]	0	0	0
Matured, expired or settled contracts	[2],[3]	(271,000,000)	0	0
Notional amounts at December 31		0	271,000,000	271,000,000
EUR
Derivative [Line Items]
Notional amounts at January 1		0
New contracts	[1]	500,000,000
Matured, expired or settled contracts	[2],[3]	0
Notional amounts at December 31		500,000,000	0
USD
Derivative [Line Items]
Notional amounts at January 1		0
New contracts	[1]	300,000,000
Matured, expired or settled contracts	[2],[3]	(300,000,000)
Notional amounts at December 31		$ 0	0
JPY
Derivative [Line Items]
Notional amounts at January 1			$ 0	925,000,000
New contracts	[1]			0
Matured, expired or settled contracts	[2],[3]			(925,000,000)
Notional amounts at December 31				$ 0
[1]	During 2018, we entered into two interest rate swap contracts with an aggregated notional amount of €400.0 million ($499.7 million) to effectively fix the interest rate on our senior notes bearing a floating rate of Euribor plus 0.3% issued in January 2018.
[2]	During 2016, we entered into the 2016 Yen Term Loan and repaid our 2014, 2015 and 2016 Japanese yen term loans. At that time, we settled the outstanding contracts related to the previously outstanding term loans for $26.3 million. The fair value of the contracts that qualified for hedge accounting at the date of repayment was recorded to AOCI/L and will be amortized to Interest Expense over the life of the original term loans. We had $7.6 million remaining in AOCI/L at December 31, 2018. During the year ended December 31, 2016, we recorded a loss of $9.9 million related to the change in fair value on the unhedged portion of the contracts.
[3]	During 2018, we repaid CAD 201.4 million ($158.9 million) on our 2015 Canadian Term Loan. At that time, we settled the interest rate swaps related to the 2015 Canadian Term Loan as we determined it was no longer probable that we would continue to have the future cash flows as originally hedged. As a result, the $12.5 million gain in AOCI/L at the time of settlement was reclassified to Interest Expense during 2018.

Financial Instruments and Fai_8

Financial Instruments and Fair Value Measurements - Summary of Activity in Interest Rate Swaps (Parenthetical) (Detail) € in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)Contract	Dec. 31, 2018CAD ($)Contract	Dec. 31, 2016USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2015USD ($)
Derivative [Line Items]
Outstanding term loan		$ 11,089,815,000				$ 9,412,631,000
JPY
Derivative [Line Items]
Outstanding term loan		1,951,844,000				1,306,380,000
Interest Rate Swaps [Member] | JPY
Derivative [Line Items]
Notional value of derivative				$ 0			$ 925,000,000
Gains (losses) from option contracts exercised				9,900,000
Senior Notes [Member]
Derivative [Line Items]
Outstanding term loan		$ 8,304,147,000				$ 6,067,277,000
Senior Notes [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Number of Contracts | Contract		2	2
Notional value of derivative		$ 499,700,000			€ 400
2015 Canadian Term Loan [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Repayments of debt		$ 158,900,000	$ 201.4
Gain on derivative	$ 12,500,000
Japanese Yen Term Loan [Member]
Derivative [Line Items]
Settlement of outstanding derivative contracts				26,300,000
Japanese Yen Term Loan [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Derivative [Line Items]
Outstanding term loan				$ 7,600,000
Euribor [Member] | Senior Notes [Member]
Derivative [Line Items]
Interest rate		0.30%	0.30%

Financial Instruments and Fai_9

Financial Instruments and Fair Value Measurements - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Hedge ineffectiveness	$ 0	$ 0	$ 0
Unrealized gains (losses) on the unhedged portion	(190,590,000)	63,455,000	(135,958,000)
Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Unrealized gains (losses) on the unhedged portion	$ 96,000,000	$ (23,000,000)	$ 0

Financial Instruments and Fa_10

Financial Instruments and Fair Value Measurements - Summary of Debt and Accrued Interest, Designated as Hedge (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Senior Notes Outstanding	$ 8,300
Designated As Hedging Instrument [Member] | British Pound Sterling Senior Notes [Member]
Derivatives Fair Value [Line Items]
Senior Notes Outstanding	269	$ 436	$ 0
Designated As Hedging Instrument [Member] | Euro Senior Notes [Member]
Derivatives Fair Value [Line Items]
Senior Notes Outstanding	$ 2,645	$ 3,620	$ 3,403

Financial Instruments and Fa_11

Financial Instruments and Fair Value Measurements - Summary of Recognized Unrealized Gains (Losses) in Foreign Currency and Derivative Gains (Losses) Net on Remeasurement of Unhedged Portion of Debt and Accrued Interest (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Foreign currency translation gains (losses), net	$ (190,590,000)	$ 63,455,000	$ (135,958,000)
Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Foreign currency translation gains (losses), net	$ 96,000,000	$ (23,000,000)	$ 0

Financial Instruments and Fa_12

Financial Instruments and Fair Value Measurements - Summary of Changes in Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative translation adjustment	$ (368,130)	$ 553,972	$ (304,009)
Foreign currency translation gains (losses), net	(190,590)	63,455	(135,958)
Total unrealized gains (losses) on derivative contracts, net	(1,323)	22,591	(1,349)
Total change in other comprehensive income (loss)	(191,913)	86,046	(137,307)
Designated As Hedging Instrument [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivative hedging instruments	26,457	(12,762)	55,460
Designated As Hedging Instrument [Member] | Non derivative Net Investment Hedge [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Nonderivative net investment hedges	151,083	(477,755)	112,591
Designated As Hedging Instrument [Member] | Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivative hedging instruments	(5,815)	12,726	(551)
Designated As Hedging Instrument [Member] | Our Share of Derivatives from Unconsolidated Co-Investment Ventures [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivative hedging instruments	$ 4,492	$ 9,865	$ (798)

Financial Instruments and Fa_13

Financial Instruments and Fair Value Measurements - Summary of Changes in Other Comprehensive Income (Loss) (Parenthetical) (Detail) $ in Millions	Dec. 31, 2018USD ($)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Derivative Instruments Gain Loss [Line Items]
Amount to be reclassified to interest expense, next 12 months	$ 4.2

Financial Instruments and Fa_14

Financial Instruments and Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	$ 11,089,815	$ 9,412,631
Fair Value of Debt	11,453,129	9,955,795
Credit Facilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	50,500	317,392
Fair Value of Debt	50,513	317,496
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	8,304,147	6,067,277
Fair Value of Debt	8,606,864	6,537,100
Term Loans and Unsecured Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	1,921,428	2,060,491
Fair Value of Debt	1,946,335	2,075,002
Secured Mortgage debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	813,740	967,471
Fair Value of Debt	$ 849,417	$ 1,026,197

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Percentage of agreement indemnification	100.00%
Outstanding performance and surety bonds	$ 212.6	$ 178.4

Business Segments - Additional

Business Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of operating segments	2

Business Segments - Segment Rep

Business Segments - Segment Reporting, Reconciliation of Revenues, Operating Income and Assets (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total revenues	$ 807,085	$ 682,432	$ 621,276	$ 693,656	$ 619,922	$ 602,874	$ 766,183	$ 629,155	$ 2,804,449	$ 2,618,134	$ 2,533,135
Operating income	241,080	$ 181,521	$ 187,294	$ 237,107	158,417	$ 175,491	$ 275,272	$ 161,886	847,002	771,066	668,378
General and administrative expenses									238,985	231,059	222,067
Depreciation and amortization expenses									947,214	879,140	930,985
Earnings from unconsolidated entities, net									298,260	248,567	206,307
Interest expense									(229,141)	(274,486)	(303,146)
Interest and other income, net									14,663	13,731	8,101
Gains on real estate transactions, net									840,996	1,182,965	757,398
Foreign currency and derivative gains (losses), net									117,096	(57,896)	7,582
Gains (losses) on early extinguishment of debt, net									(2,586)	(68,379)	2,484
Earnings before income taxes									1,886,290	1,815,568	1,347,104
Total assets	38,417,664				29,481,075				38,417,664	29,481,075
Investments in and advances to unconsolidated entities	5,745,294				5,496,450				5,745,294	5,496,450
Assets held for sale or contribution	622,288				342,060				622,288	342,060
Notes receivable backed by real estate	0				34,260				0	34,260
Cash and cash equivalents	343,856				447,046				343,856	447,046	807,316	$ 264,080
Other assets	1,775,919				1,381,963				1,775,919	1,381,963
Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Total assets	31,431,376				22,918,099				31,431,376	22,918,099
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income									2,033,201	1,881,265	1,821,430
Total assets	31,472,913				22,960,741				31,472,913	22,960,741
Operating Segments [Member] | Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									2,398,149	2,244,245	2,229,573
Operating income									1,783,941	1,662,517	1,646,374
Operating Segments [Member] | Strategic Capital [Member]
Segment Reporting Information [Line Items]
Total revenues									406,300	373,889	303,562
Operating income									249,260	218,748	175,056
Total assets	41,537				42,642				41,537	42,642
Operating Segments [Member] | U.S. [Member] | Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									2,173,279	2,025,184	2,040,308
Operating income									1,621,665	1,519,164	1,520,571
Total assets	27,666,200				19,058,610				27,666,200	19,058,610
Operating Segments [Member] | U.S. [Member] | Strategic Capital [Member]
Segment Reporting Information [Line Items]
Total revenues									74,618	176,720	39,360
Operating income									4,712	106,471	(1,622)
Total assets	15,802				16,818				15,802	16,818
Operating Segments [Member] | Other Americas [Member] | Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									119,954	84,789	58,519
Operating income									89,044	58,842	38,114
Total assets	1,712,862				1,767,385				1,712,862	1,767,385
Operating Segments [Member] | Other Americas [Member] | Strategic Capital [Member]
Segment Reporting Information [Line Items]
Total revenues									32,434	28,494	22,799
Operating income									19,874	16,811	12,777
Operating Segments [Member] | Europe [Member] | Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									54,405	73,708	75,602
Operating income									34,807	51,277	54,406
Total assets	1,040,061				1,008,340				1,040,061	1,008,340
Operating Segments [Member] | Europe [Member] | Strategic Capital [Member]
Segment Reporting Information [Line Items]
Total revenues									174,898	106,862	186,652
Operating income									136,240	68,127	144,132
Total assets	25,280				25,280				25,280	25,280
Operating Segments [Member] | Asia [Member] | Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									50,511	60,564	55,144
Operating income									38,425	33,234	33,283
Total assets	1,012,253				1,083,764				1,012,253	1,083,764
Operating Segments [Member] | Asia [Member] | Strategic Capital [Member]
Segment Reporting Information [Line Items]
Total revenues									124,350	61,813	54,751
Operating income									88,434	27,339	19,769
Total assets	455				544				455	544
Reconciling Items [Member]
Segment Reporting Information [Line Items]
Operating income									847,002	771,066	668,378
General and administrative expenses									238,985	231,059	222,067
Depreciation and amortization expenses									947,214	879,140	930,985
Earnings from unconsolidated entities, net									298,260	248,567	206,307
Interest expense									(229,141)	(274,486)	(303,146)
Interest and other income, net									14,663	13,731	$ 8,101
Total assets	6,944,751				6,520,334				6,944,751	6,520,334
Investments in and advances to unconsolidated entities	5,745,294				5,496,450				5,745,294	5,496,450
Assets held for sale or contribution	622,288				342,060				622,288	342,060
Notes receivable backed by real estate	0				34,260				0	34,260
Cash and cash equivalents	343,856				447,046				343,856	447,046
Other assets	$ 233,313				$ 200,518				$ 233,313	$ 200,518

Business Segments - Segment R_2

Business Segments - Segment Reporting, Reconciliation of Revenues, Operating Income and Assets (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Strategic Capital [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 25.3	$ 25.3

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Aug. 22, 2018	Jul. 31, 2017
Supplemental Cash Flow Information [Line Items]
Capitalization for equity based compensation expense	$ 26.4	$ 28.8	$ 25.8
Noncash acquisition, real estate acquired	11.8
Notes receivable backed by real estate	53.8
Limited Partners [Member] | Prologis, L.P. [Member] | Common [Member]
Supplemental Cash Flow Information [Line Items]
PLD units redeemed for common shares		1.5	1.9
Unconsolidated Entities [Member]
Supplemental Cash Flow Information [Line Items]
Equity ownership interest received	$ 386.7	$ 153.3	$ 135.3
Prologis Targeted U S Logistics Fund [Member]
Supplemental Cash Flow Information [Line Items]
Equity ownership interest received		1,100
Notes receivable backed by real estate		19.5
Secured Debt		$ 956			$ 956
DCT [Member]
Supplemental Cash Flow Information [Line Items]
Value of common stock issued as consideration				$ 8,500

Selected Quarterly Financial _3

Selected Quarterly Financial Data (Unaudited) - Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Data [Line Items]
Rental revenues	$ 527,574	$ 476,865	$ 426,549	$ 427,901	$ 433,568	$ 416,427	$ 447,960	$ 439,884	$ 1,858,889	$ 1,737,839	$ 1,734,844
Rental recoveries	151,621	132,109	118,130	128,042	117,081	114,755	128,417	127,049	529,902	487,302	485,565
Total revenues	807,085	682,432	621,276	693,656	619,922	602,874	766,183	629,155	2,804,449	2,618,134	2,533,135
Rental expenses	(177,194)	(147,184)	(133,329)	(142,941)	(140,338)	(128,735)	(147,794)	(152,656)	(600,648)	(569,523)	(568,870)
Operating income	241,080	181,521	187,294	237,107	158,417	175,491	275,272	161,886	847,002	771,066	668,378
Consolidated net earnings	690,490	375,520	364,991	391,959	338,873	913,417	287,980	220,689	1,822,960	1,760,959	1,292,540
Net earnings attributable to common stockholders/unit holders	$ 596,568	$ 346,345	$ 334,611	$ 365,902	$ 295,515	$ 876,218	$ 266,943	$ 203,255	$ 1,643,426	$ 1,641,931	$ 1,203,218
Net earnings per share attributable to common stockholders/unitholders - Basic	$ 0.95	$ 0.60	$ 0.63	$ 0.69	$ 0.56	$ 1.65	$ 0.50	$ 0.38	$ 2.90	$ 3.10	$ 2.29
Net earnings per share attributable to common stockholders/unitholders - Diluted	$ 0.94	$ 0.60	$ 0.62	$ 0.68	$ 0.55	$ 1.63	$ 0.50	$ 0.38	$ 2.87	$ 3.06	$ 2.27
Prologis, L.P. [Member]
Selected Quarterly Financial Data [Line Items]
Rental revenues	$ 527,574	$ 476,865	$ 426,549	$ 427,901	$ 433,568	$ 416,427	$ 447,960	$ 439,884
Rental recoveries	151,621	132,109	118,130	128,042	117,081	114,755	128,417	127,049
Total revenues	807,085	682,432	621,276	693,656	619,922	602,874	766,183	629,155
Rental expenses	(177,194)	(147,184)	(133,329)	(142,941)	(140,338)	(128,735)	(147,794)	(152,656)
Operating income	241,080	181,521	187,294	237,107	158,417	175,491	275,272	161,886
Consolidated net earnings	690,490	375,520	364,991	391,959	338,873	913,417	287,980	220,689
Net earnings attributable to common stockholders/unit holders	$ 614,490	$ 356,765	$ 344,633	$ 376,425	$ 303,416	$ 900,331	$ 274,320	$ 208,878
Net earnings per share attributable to common stockholders/unitholders - Basic	$ 0.95	$ 0.60	$ 0.63	$ 0.69	$ 0.56	$ 1.65	$ 0.50	$ 0.38
Net earnings per share attributable to common stockholders/unitholders - Diluted	$ 0.94	$ 0.60	$ 0.62	$ 0.68	$ 0.55	$ 1.63	$ 0.50	$ 0.38

Real Estate and Accumulated D_2

Real Estate and Accumulated Depreciation (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Property	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1,958
Land	$ 8,653,856
Building and Improvements	17,965,653
Costs capitalized subsequent to acquisition	6,155,447
Carrying amount of land	8,806,017
Carrying amount of buildings and improvements	23,968,939
Carrying amount of land and buildings and improvements, Total	32,774,956	$ 24,178,816	$ 25,375,539	$ 25,608,648
Accumulated Depreciation	$ (4,550,958)	$ (3,971,501)	$ (3,679,479)	$ (3,207,855)
Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	100
Land	$ 761,129
Building and Improvements	70,992
Costs capitalized subsequent to acquisition	1,310,680
Carrying amount of land	761,129
Carrying amount of buildings and improvements	1,381,672
Carrying amount of land and buildings and improvements, Total	$ 2,142,801
United States: Markets [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	60
Land	$ 409,214
Building and Improvements	70,992
Costs capitalized subsequent to acquisition	618,018
Carrying amount of land	409,214
Carrying amount of buildings and improvements	689,010
Carrying amount of land and buildings and improvements, Total	1,098,224
Accumulated Depreciation	$ 0
United States: Markets [Member] | Atlanta [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 3,927
Building and Improvements	14,240
Costs capitalized subsequent to acquisition	10,927
Carrying amount of land	3,927
Carrying amount of buildings and improvements	25,167
Carrying amount of land and buildings and improvements, Total	29,094
Accumulated Depreciation	$ 0
United States: Markets [Member] | Central Valley [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	3
Land	$ 6,483
Building and Improvements	0
Costs capitalized subsequent to acquisition	58,845
Carrying amount of land	6,483
Carrying amount of buildings and improvements	58,845
Carrying amount of land and buildings and improvements, Total	65,328
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Chicago [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	6
Land	$ 42,852
Building and Improvements	9,201
Costs capitalized subsequent to acquisition	48,107
Carrying amount of land	42,852
Carrying amount of buildings and improvements	57,308
Carrying amount of land and buildings and improvements, Total	100,160
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Dallas/Fort Worth [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 7,371
Building and Improvements	0
Costs capitalized subsequent to acquisition	17,097
Carrying amount of land	7,371
Carrying amount of buildings and improvements	17,097
Carrying amount of land and buildings and improvements, Total	24,468
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Denver [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	3
Land	$ 17,555
Building and Improvements	0
Costs capitalized subsequent to acquisition	31,795
Carrying amount of land	17,555
Carrying amount of buildings and improvements	31,795
Carrying amount of land and buildings and improvements, Total	49,350
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Indianapolis [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 418
Building and Improvements	0
Costs capitalized subsequent to acquisition	6,871
Carrying amount of land	418
Carrying amount of buildings and improvements	6,871
Carrying amount of land and buildings and improvements, Total	7,289
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Las Vegas [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	5
Land	$ 15,681
Building and Improvements	0
Costs capitalized subsequent to acquisition	38,066
Carrying amount of land	15,681
Carrying amount of buildings and improvements	38,066
Carrying amount of land and buildings and improvements, Total	53,747
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Nashville [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 5,668
Building and Improvements	0
Costs capitalized subsequent to acquisition	13,523
Carrying amount of land	5,668
Carrying amount of buildings and improvements	13,523
Carrying amount of land and buildings and improvements, Total	19,191
Accumulated Depreciation	$ 0
United States: Markets [Member] | New Jersey/New York City [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 58,001
Building and Improvements	0
Costs capitalized subsequent to acquisition	32,426
Carrying amount of land	58,001
Carrying amount of buildings and improvements	32,426
Carrying amount of land and buildings and improvements, Total	90,427
Accumulated Depreciation	$ 0
United States: Markets [Member] | Orlando [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 1,116
Building and Improvements	6,326
Costs capitalized subsequent to acquisition	414
Carrying amount of land	1,116
Carrying amount of buildings and improvements	6,740
Carrying amount of land and buildings and improvements, Total	7,856
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Phoenix [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 15,053
Building and Improvements	0
Costs capitalized subsequent to acquisition	20,019
Carrying amount of land	15,053
Carrying amount of buildings and improvements	20,019
Carrying amount of land and buildings and improvements, Total	35,072
Accumulated Depreciation	$ 0
United States: Markets [Member] | San Francisco Bay Area [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 32,744
Building and Improvements	7,532
Costs capitalized subsequent to acquisition	19,494
Carrying amount of land	32,744
Carrying amount of buildings and improvements	27,026
Carrying amount of land and buildings and improvements, Total	59,770
Accumulated Depreciation	$ 0
United States: Markets [Member] | Seattle [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 70,233
Building and Improvements	28,431
Costs capitalized subsequent to acquisition	130,994
Carrying amount of land	70,233
Carrying amount of buildings and improvements	159,425
Carrying amount of land and buildings and improvements, Total	229,658
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | South Florida [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 20,712
Building and Improvements	0
Costs capitalized subsequent to acquisition	42,962
Carrying amount of land	20,712
Carrying amount of buildings and improvements	42,962
Carrying amount of land and buildings and improvements, Total	$ 63,674
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Southern California [Member] | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	13
Land	$ 97,501
Building and Improvements	5,143
Costs capitalized subsequent to acquisition	88,553
Carrying amount of land	97,501
Carrying amount of buildings and improvements	93,696
Carrying amount of land and buildings and improvements, Total	$ 191,197
Date of Construction/ Acquisition	2,018
United States: Markets [Member] | Baltimore Washington D C | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 7,893
Building and Improvements	0
Costs capitalized subsequent to acquisition	31,726
Carrying amount of land	7,893
Carrying amount of buildings and improvements	31,726
Carrying amount of land and buildings and improvements, Total	39,619
Accumulated Depreciation	$ 0
United States: Markets [Member] | Cincinnati | U.S. [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 6,006
Building and Improvements	119
Costs capitalized subsequent to acquisition	26,199
Carrying amount of land	6,006
Carrying amount of buildings and improvements	26,318
Carrying amount of land and buildings and improvements, Total	32,324
Accumulated Depreciation	$ 0
Other Americas Markets [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	5
Land	$ 55,778
Building and Improvements	0
Costs capitalized subsequent to acquisition	52,423
Carrying amount of land	55,778
Carrying amount of buildings and improvements	52,423
Carrying amount of land and buildings and improvements, Total	$ 108,201
Other Americas Markets [Member] | Canada [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 17,257
Building and Improvements	0
Costs capitalized subsequent to acquisition	24,230
Carrying amount of land	17,257
Carrying amount of buildings and improvements	24,230
Carrying amount of land and buildings and improvements, Total	$ 41,487
Other Americas Markets [Member] | Mexico [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 38,521
Building and Improvements	0
Costs capitalized subsequent to acquisition	28,193
Carrying amount of land	38,521
Carrying amount of buildings and improvements	28,193
Carrying amount of land and buildings and improvements, Total	$ 66,714
Date of Construction/ Acquisition	2,018
Europe Markets | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	29
Land	$ 154,854
Building and Improvements	0
Costs capitalized subsequent to acquisition	272,045
Carrying amount of land	154,854
Carrying amount of buildings and improvements	272,045
Carrying amount of land and buildings and improvements, Total	$ 426,899
Europe Markets | France [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 9,424
Building and Improvements	0
Costs capitalized subsequent to acquisition	23,943
Carrying amount of land	9,424
Carrying amount of buildings and improvements	23,943
Carrying amount of land and buildings and improvements, Total	$ 33,367
Europe Markets | Germany [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 41,530
Building and Improvements	0
Costs capitalized subsequent to acquisition	103,331
Carrying amount of land	41,530
Carrying amount of buildings and improvements	103,331
Carrying amount of land and buildings and improvements, Total	$ 144,861
Date of Construction/ Acquisition	2,018
Europe Markets | United Kingdom [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 6,199
Building and Improvements	0
Costs capitalized subsequent to acquisition	11,878
Carrying amount of land	6,199
Carrying amount of buildings and improvements	11,878
Carrying amount of land and buildings and improvements, Total	18,077
Accumulated Depreciation	$ 0
Date of Construction/ Acquisition	2,018
Europe Markets | Spain [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 16,050
Building and Improvements	0
Costs capitalized subsequent to acquisition	10,908
Carrying amount of land	16,050
Carrying amount of buildings and improvements	10,908
Carrying amount of land and buildings and improvements, Total	$ 26,958
Date of Construction/ Acquisition	2,018
Europe Markets | Sweden [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 4,356
Building and Improvements	0
Costs capitalized subsequent to acquisition	17,064
Carrying amount of land	4,356
Carrying amount of buildings and improvements	17,064
Carrying amount of land and buildings and improvements, Total	$ 21,420
Europe Markets | Czech Republic | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	3
Land	$ 15,667
Building and Improvements	0
Costs capitalized subsequent to acquisition	32,204
Carrying amount of land	15,667
Carrying amount of buildings and improvements	32,204
Carrying amount of land and buildings and improvements, Total	$ 47,871
Date of Construction/ Acquisition	2,018
Europe Markets | Italy [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	4
Land	$ 13,847
Building and Improvements	0
Costs capitalized subsequent to acquisition	4,311
Carrying amount of land	13,847
Carrying amount of buildings and improvements	4,311
Carrying amount of land and buildings and improvements, Total	$ 18,158
Europe Markets | Netherlands [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	5
Land	$ 39,188
Building and Improvements	0
Costs capitalized subsequent to acquisition	44,014
Carrying amount of land	39,188
Carrying amount of buildings and improvements	44,014
Carrying amount of land and buildings and improvements, Total	$ 83,202
Europe Markets | Poland [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 3,275
Building and Improvements	0
Costs capitalized subsequent to acquisition	13,097
Carrying amount of land	3,275
Carrying amount of buildings and improvements	13,097
Carrying amount of land and buildings and improvements, Total	$ 16,372
Date of Construction/ Acquisition	2,018
Europe Markets | Slovakia [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	3
Land	$ 5,318
Building and Improvements	0
Costs capitalized subsequent to acquisition	11,295
Carrying amount of land	5,318
Carrying amount of buildings and improvements	11,295
Carrying amount of land and buildings and improvements, Total	$ 16,613
Date of Construction/ Acquisition	2,018
Asia Markets [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	6
Land	$ 141,283
Building and Improvements	0
Costs capitalized subsequent to acquisition	368,194
Carrying amount of land	141,283
Carrying amount of buildings and improvements	368,194
Carrying amount of land and buildings and improvements, Total	$ 509,477
Asia Markets [Member] | Japan [Member] | Development Portfolio
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	6
Land	$ 141,283
Building and Improvements	0
Costs capitalized subsequent to acquisition	368,194
Carrying amount of land	141,283
Carrying amount of buildings and improvements	368,194
Carrying amount of land and buildings and improvements, Total	$ 509,477
Date of Construction/ Acquisition	2,018
Operating Properties [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1,858
Land	$ 7,892,727
Building and Improvements	17,894,661
Costs capitalized subsequent to acquisition	4,844,767
Carrying amount of land	8,044,888
Carrying amount of buildings and improvements	22,587,267
Carrying amount of land and buildings and improvements, Total	30,632,155
Accumulated Depreciation	$ (4,550,958)
Operating Properties [Member] | United States: Markets [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1,780
Land	$ 7,408,493
Building and Improvements	17,044,190
Costs capitalized subsequent to acquisition	4,322,421
Carrying amount of land	7,549,488
Carrying amount of buildings and improvements	21,225,616
Carrying amount of land and buildings and improvements, Total	28,775,104
Accumulated Depreciation	$ (4,366,926)
Operating Properties [Member] | United States: Markets [Member] | Atlanta [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	104
Land	$ 222,503
Building and Improvements	888,970
Costs capitalized subsequent to acquisition	231,746
Carrying amount of land	223,511
Carrying amount of buildings and improvements	1,119,708
Carrying amount of land and buildings and improvements, Total	1,343,219
Accumulated Depreciation	$ (180,067)
Date of Construction/ Acquisition	1994-2018
Operating Properties [Member] | United States: Markets [Member] | Austin [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	10
Land	$ 12,783
Building and Improvements	52,335
Costs capitalized subsequent to acquisition	5,857
Carrying amount of land	12,837
Carrying amount of buildings and improvements	58,138
Carrying amount of land and buildings and improvements, Total	70,975
Accumulated Depreciation	$ (20,935)
Date of Construction/ Acquisition	1994-2015
Operating Properties [Member] | United States: Markets [Member] | Central and Eastern Pennsylvania [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	42
Land	$ 252,910
Building and Improvements	843,408
Costs capitalized subsequent to acquisition	170,423
Carrying amount of land	256,884
Carrying amount of buildings and improvements	1,009,857
Carrying amount of land and buildings and improvements, Total	1,266,741
Accumulated Depreciation	$ (160,081)
Date of Construction/ Acquisition	2002-2018
Operating Properties [Member] | United States: Markets [Member] | Central Valley [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	28
Land	$ 144,651
Building and Improvements	386,853
Costs capitalized subsequent to acquisition	443,563
Carrying amount of land	155,518
Carrying amount of buildings and improvements	819,549
Carrying amount of land and buildings and improvements, Total	975,067
Accumulated Depreciation	$ (123,925)
Date of Construction/ Acquisition	1999-2018
Operating Properties [Member] | United States: Markets [Member] | Charlotte [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	16
Land	$ 15,202
Building and Improvements	32,889
Costs capitalized subsequent to acquisition	58,907
Carrying amount of land	17,465
Carrying amount of buildings and improvements	89,533
Carrying amount of land and buildings and improvements, Total	106,998
Accumulated Depreciation	$ (37,484)
Date of Construction/ Acquisition	1994-2015
Operating Properties [Member] | United States: Markets [Member] | Chicago [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	176
Land	$ 557,482
Building and Improvements	1,836,175
Costs capitalized subsequent to acquisition	297,389
Carrying amount of land	570,289
Carrying amount of buildings and improvements	2,120,757
Carrying amount of land and buildings and improvements, Total	2,691,046
Accumulated Depreciation	$ (451,793)
Date of Construction/ Acquisition	1995-2018
Operating Properties [Member] | United States: Markets [Member] | Cincinnati [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	27
Land	$ 41,002
Building and Improvements	181,564
Costs capitalized subsequent to acquisition	64,238
Carrying amount of land	43,226
Carrying amount of buildings and improvements	243,578
Carrying amount of land and buildings and improvements, Total	286,804
Accumulated Depreciation	$ (38,851)
Date of Construction/ Acquisition	1996-2018
Operating Properties [Member] | United States: Markets [Member] | Columbus [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	18
Land	$ 24,685
Building and Improvements	116,621
Costs capitalized subsequent to acquisition	49,173
Carrying amount of land	25,078
Carrying amount of buildings and improvements	165,401
Carrying amount of land and buildings and improvements, Total	190,479
Accumulated Depreciation	$ (65,578)
Date of Construction/ Acquisition	1996-2015
Operating Properties [Member] | United States: Markets [Member] | Dallas/Fort Worth [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	130
Land	$ 250,669
Building and Improvements	996,978
Costs capitalized subsequent to acquisition	297,481
Carrying amount of land	255,128
Carrying amount of buildings and improvements	1,290,000
Carrying amount of land and buildings and improvements, Total	1,545,128
Accumulated Depreciation	$ (276,508)
Date of Construction/ Acquisition	1994-2018
Operating Properties [Member] | United States: Markets [Member] | Denver [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	33
Land	$ 85,275
Building and Improvements	295,412
Costs capitalized subsequent to acquisition	79,889
Carrying amount of land	83,610
Carrying amount of buildings and improvements	376,966
Carrying amount of land and buildings and improvements, Total	460,576
Accumulated Depreciation	$ (92,381)
Date of Construction/ Acquisition	1993-2018
Operating Properties [Member] | United States: Markets [Member] | Houston [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	103
Land	$ 168,410
Building and Improvements	696,672
Costs capitalized subsequent to acquisition	129,473
Carrying amount of land	168,477
Carrying amount of buildings and improvements	826,078
Carrying amount of land and buildings and improvements, Total	994,555
Accumulated Depreciation	$ (135,283)
Date of Construction/ Acquisition	1993-2018
Operating Properties [Member] | United States: Markets [Member] | Indianapolis [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	19
Land	$ 15,970
Building and Improvements	85,015
Costs capitalized subsequent to acquisition	39,181
Carrying amount of land	15,970
Carrying amount of buildings and improvements	124,196
Carrying amount of land and buildings and improvements, Total	140,166
Accumulated Depreciation	$ (41,477)
Date of Construction/ Acquisition	1995-2018
Operating Properties [Member] | United States: Markets [Member] | Jacksonville [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 0
Building and Improvements	2,892
Costs capitalized subsequent to acquisition	257
Carrying amount of land	0
Carrying amount of buildings and improvements	3,149
Carrying amount of land and buildings and improvements, Total	3,149
Accumulated Depreciation	$ (1,950)
Date of Construction/ Acquisition	2,011
Operating Properties [Member] | United States: Markets [Member] | Kansas City [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 0
Building and Improvements	14,411
Costs capitalized subsequent to acquisition	164
Carrying amount of land	0
Carrying amount of buildings and improvements	14,575
Carrying amount of land and buildings and improvements, Total	14,575
Accumulated Depreciation	$ (8,137)
Date of Construction/ Acquisition	2,011
Operating Properties [Member] | United States: Markets [Member] | Las Vegas [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	49
Land	$ 111,489
Building and Improvements	270,443
Costs capitalized subsequent to acquisition	135,626
Carrying amount of land	105,980
Carrying amount of buildings and improvements	411,578
Carrying amount of land and buildings and improvements, Total	517,558
Accumulated Depreciation	$ (62,436)
Date of Construction/ Acquisition	1996-2017
Operating Properties [Member] | United States: Markets [Member] | Louisville [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	11
Land	$ 42,979
Building and Improvements	226,263
Costs capitalized subsequent to acquisition	36,679
Carrying amount of land	43,285
Carrying amount of buildings and improvements	262,636
Carrying amount of land and buildings and improvements, Total	305,921
Accumulated Depreciation	$ (54,823)
Date of Construction/ Acquisition	2005-2015
Operating Properties [Member] | United States: Markets [Member] | Nashville [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	21
Land	$ 60,581
Building and Improvements	264,972
Costs capitalized subsequent to acquisition	42,079
Carrying amount of land	62,170
Carrying amount of buildings and improvements	305,462
Carrying amount of land and buildings and improvements, Total	367,632
Accumulated Depreciation	$ (34,467)
Date of Construction/ Acquisition	1995-2018
Operating Properties [Member] | United States: Markets [Member] | New Jersey/New York City [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	108
Land	$ 875,466
Building and Improvements	1,505,680
Costs capitalized subsequent to acquisition	485,999
Carrying amount of land	876,393
Carrying amount of buildings and improvements	1,990,752
Carrying amount of land and buildings and improvements, Total	2,867,145
Accumulated Depreciation	$ (431,538)
Date of Construction/ Acquisition	1996-2018
Operating Properties [Member] | United States: Markets [Member] | Orlando [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	48
Land	$ 82,256
Building and Improvements	320,781
Costs capitalized subsequent to acquisition	60,495
Carrying amount of land	82,683
Carrying amount of buildings and improvements	380,849
Carrying amount of land and buildings and improvements, Total	463,532
Accumulated Depreciation	$ (60,061)
Date of Construction/ Acquisition	1994-2018
Operating Properties [Member] | United States: Markets [Member] | Phoenix [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	31
Land	$ 54,079
Building and Improvements	188,727
Costs capitalized subsequent to acquisition	48,885
Carrying amount of land	54,070
Carrying amount of buildings and improvements	237,621
Carrying amount of land and buildings and improvements, Total	291,691
Accumulated Depreciation	$ (45,022)
Date of Construction/ Acquisition	1992-2018
Operating Properties [Member] | United States: Markets [Member] | Portland [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	17
Land	$ 36,733
Building and Improvements	100,728
Costs capitalized subsequent to acquisition	18,085
Carrying amount of land	35,396
Carrying amount of buildings and improvements	120,150
Carrying amount of land and buildings and improvements, Total	155,546
Accumulated Depreciation	$ (24,749)
Date of Construction/ Acquisition	2006-2018
Operating Properties [Member] | United States: Markets [Member] | Reno [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	17
Land	$ 23,919
Building and Improvements	143,324
Costs capitalized subsequent to acquisition	84,636
Carrying amount of land	25,393
Carrying amount of buildings and improvements	226,486
Carrying amount of land and buildings and improvements, Total	251,879
Accumulated Depreciation	$ (60,116)
Date of Construction/ Acquisition	1994-2015
Operating Properties [Member] | United States: Markets [Member] | San Antonio [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	20
Land	$ 25,735
Building and Improvements	95,828
Costs capitalized subsequent to acquisition	38,938
Carrying amount of land	25,958
Carrying amount of buildings and improvements	134,543
Carrying amount of land and buildings and improvements, Total	160,501
Accumulated Depreciation	$ (46,024)
Date of Construction/ Acquisition	1994-2016
Operating Properties [Member] | United States: Markets [Member] | San Francisco Bay Area [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	208
Land	$ 802,386
Building and Improvements	1,513,171
Costs capitalized subsequent to acquisition	294,059
Carrying amount of land	807,623
Carrying amount of buildings and improvements	1,801,993
Carrying amount of land and buildings and improvements, Total	2,609,616
Accumulated Depreciation	$ (505,996)
Date of Construction/ Acquisition	1993-2018
Operating Properties [Member] | United States: Markets [Member] | Savannah [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 2,161
Building and Improvements	14,680
Costs capitalized subsequent to acquisition	1,462
Carrying amount of land	2,161
Carrying amount of buildings and improvements	16,142
Carrying amount of land and buildings and improvements, Total	18,303
Accumulated Depreciation	$ (3,921)
Date of Construction/ Acquisition	2,011
Operating Properties [Member] | United States: Markets [Member] | Seattle [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	83
Land	$ 533,163
Building and Improvements	960,214
Costs capitalized subsequent to acquisition	140,698
Carrying amount of land	553,190
Carrying amount of buildings and improvements	1,080,885
Carrying amount of land and buildings and improvements, Total	1,634,075
Accumulated Depreciation	$ (133,022)
Date of Construction/ Acquisition	2008-2018
Operating Properties [Member] | United States: Markets [Member] | South Florida [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	96
Land	$ 352,027
Building and Improvements	778,818
Costs capitalized subsequent to acquisition	162,149
Carrying amount of land	356,442
Carrying amount of buildings and improvements	936,552
Carrying amount of land and buildings and improvements, Total	1,292,994
Accumulated Depreciation	$ (183,113)
Date of Construction/ Acquisition	1994-2018
Operating Properties [Member] | United States: Markets [Member] | Southern California [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	309
Land	$ 2,477,437
Building and Improvements	3,825,024
Costs capitalized subsequent to acquisition	803,913
Carrying amount of land	2,553,245
Carrying amount of buildings and improvements	4,553,129
Carrying amount of land and buildings and improvements, Total	7,106,374
Accumulated Depreciation	$ (997,117)
Date of Construction/ Acquisition	2005-2018
Operating Properties [Member] | United States: Markets [Member] | Baltimore/Washington [Member] | U.S. [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	52
Land	$ 136,540
Building and Improvements	405,342
Costs capitalized subsequent to acquisition	100,977
Carrying amount of land	137,506
Carrying amount of buildings and improvements	505,353
Carrying amount of land and buildings and improvements, Total	642,859
Accumulated Depreciation	$ (90,071)
Date of Construction/ Acquisition	1995-2018
Operating Properties [Member] | Other Americas Markets [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	52
Land	$ 397,302
Building and Improvements	639,011
Costs capitalized subsequent to acquisition	276,259
Carrying amount of land	395,924
Carrying amount of buildings and improvements	916,648
Carrying amount of land and buildings and improvements, Total	1,312,572
Accumulated Depreciation	$ (100,525)
Operating Properties [Member] | Other Americas Markets [Member] | Canada [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	31
Land	$ 197,503
Building and Improvements	363,279
Costs capitalized subsequent to acquisition	158,973
Carrying amount of land	201,955
Carrying amount of buildings and improvements	517,800
Carrying amount of land and buildings and improvements, Total	719,755
Accumulated Depreciation	$ (89,382)
Date of Construction/ Acquisition	2008-2018
Operating Properties [Member] | Other Americas Markets [Member] | Mexico [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	7
Land	$ 70,233
Building and Improvements	2,287
Costs capitalized subsequent to acquisition	86,131
Carrying amount of land	74,417
Carrying amount of buildings and improvements	84,234
Carrying amount of land and buildings and improvements, Total	158,651
Accumulated Depreciation	$ (1,344)
Date of Construction/ Acquisition	2011-2018
Operating Properties [Member] | Other Americas Markets [Member] | Brazil
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	14
Land	$ 129,566
Building and Improvements	273,445
Costs capitalized subsequent to acquisition	31,155
Carrying amount of land	119,552
Carrying amount of buildings and improvements	314,614
Carrying amount of land and buildings and improvements, Total	434,166
Accumulated Depreciation	$ (9,799)
Date of Construction/ Acquisition	2,017
Operating Properties [Member] | Europe Markets
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	18
Land	$ 52,087
Building and Improvements	67,528
Costs capitalized subsequent to acquisition	99,593
Carrying amount of land	63,748
Carrying amount of buildings and improvements	155,460
Carrying amount of land and buildings and improvements, Total	219,208
Accumulated Depreciation	$ (27,917)
Operating Properties [Member] | Europe Markets | France [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 4,854
Building and Improvements	0
Costs capitalized subsequent to acquisition	24,863
Carrying amount of land	3,855
Carrying amount of buildings and improvements	25,862
Carrying amount of land and buildings and improvements, Total	29,717
Accumulated Depreciation	$ (2,295)
Date of Construction/ Acquisition	2012-2018
Operating Properties [Member] | Europe Markets | Germany [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 10,638
Building and Improvements	5,522
Costs capitalized subsequent to acquisition	604
Carrying amount of land	10,638
Carrying amount of buildings and improvements	6,126
Carrying amount of land and buildings and improvements, Total	16,764
Accumulated Depreciation	$ (3,343)
Date of Construction/ Acquisition	2,011
Operating Properties [Member] | Europe Markets | United Kingdom [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	7
Land	$ 28,504
Building and Improvements	23,422
Costs capitalized subsequent to acquisition	14,575
Carrying amount of land	28,660
Carrying amount of buildings and improvements	37,841
Carrying amount of land and buildings and improvements, Total	66,501
Accumulated Depreciation	$ (515)
Date of Construction/ Acquisition	2016-2018
Operating Properties [Member] | Europe Markets | Spain [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	5
Land	$ 7,044
Building and Improvements	37,040
Costs capitalized subsequent to acquisition	13,634
Carrying amount of land	6,825
Carrying amount of buildings and improvements	50,893
Carrying amount of land and buildings and improvements, Total	57,718
Accumulated Depreciation	$ (11,795)
Date of Construction/ Acquisition	2011-2017
Operating Properties [Member] | Europe Markets | Sweden [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 1,047
Building and Improvements	1,544
Costs capitalized subsequent to acquisition	45,917
Carrying amount of land	13,770
Carrying amount of buildings and improvements	34,738
Carrying amount of land and buildings and improvements, Total	48,508
Accumulated Depreciation	$ (9,969)
Date of Construction/ Acquisition	2011-2017
Operating Properties [Member] | Asia Markets [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	8
Land	$ 34,845
Building and Improvements	143,932
Costs capitalized subsequent to acquisition	146,494
Carrying amount of land	35,728
Carrying amount of buildings and improvements	289,543
Carrying amount of land and buildings and improvements, Total	325,271
Accumulated Depreciation	$ (55,590)
Operating Properties [Member] | Asia Markets [Member] | China [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	2
Land	$ 1,395
Building and Improvements	8,457
Costs capitalized subsequent to acquisition	136
Carrying amount of land	1,202
Carrying amount of buildings and improvements	8,786
Carrying amount of land and buildings and improvements, Total	9,988
Accumulated Depreciation	$ (2,107)
Date of Construction/ Acquisition	2,011
Operating Properties [Member] | Asia Markets [Member] | Japan [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	1
Land	$ 33,450
Building and Improvements	0
Costs capitalized subsequent to acquisition	143,495
Carrying amount of land	34,526
Carrying amount of buildings and improvements	142,419
Carrying amount of land and buildings and improvements, Total	176,945
Accumulated Depreciation	$ (6,190)
Date of Construction/ Acquisition	2,016
Operating Properties [Member] | Asia Markets [Member] | Singapore [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of buildings | Property	5
Land	$ 0
Building and Improvements	135,475
Costs capitalized subsequent to acquisition	2,863
Carrying amount of land	0
Carrying amount of buildings and improvements	138,338
Carrying amount of land and buildings and improvements, Total	138,338
Accumulated Depreciation	$ (47,293)
Date of Construction/ Acquisition	2,011

Real Estate and Accumulated D_3

Real Estate and Accumulated Depreciation (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Total per Schedule III	$ 32,774,956	$ 24,178,816	$ 25,375,539	$ 32,774,956	$ 24,178,816
Land				1,192,220
Other real estate investments				619,811
Total per Consolidated Balance Sheets				34,586,987	25,838,644
Aggregate cost for Federal tax purposes				24,000,000
Total accumulated depreciation per Schedule III	4,550,958	3,971,501	3,679,479	4,550,958	3,971,501
Accumulated depreciation on other real estate investments	105,722
Total per Consolidated Balance Sheets				4,656,680	$ 4,059,348
Mortgage notes, aggregate cost of secured properties				2,200,000
Mortgage notes	774,600
Assessment bonds				$ 12,600
Assessment bonds, aggregate undepreciated cost	1,000,000
Real estate assets:
Balance at beginning of year	24,178,816	25,375,539	25,608,648
Acquisitions of and improvements to operating properties and development activity, and net effect of changes in foreign exchange rates and other	10,106,651	2,680,484	1,883,888
Basis of operating properties disposed of	(1,461,458)	(3,697,798)	(1,359,186)
Change in the development portfolio balance, including the acquisition of properties	549,312	161,408	(440,821)
Assets transferred to held for sale	(598,365)	(340,817)	(316,990)
Balance at end year	32,774,956	24,178,816	25,375,539
Accumulated depreciation:
Balance at beginning of year	3,971,501	3,679,479	3,207,855
Depreciation expense	703,215	614,756	668,686
Balances retired upon disposition of operating properties and net effect of changes in foreign exchange rates and other	(119,029)	(313,584)	(195,895)
Assets transferred to held for sale	(4,729)	(9,150)	(1,167)
Balance at end of year	$ 4,550,958	$ 3,971,501	$ 3,679,479
Standard Tenant Improvements [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	10 years
Land improvements on developed buildings [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	25 years
Acquired Industrial Properties [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	30 years
Properties Developed [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	40 years
Minimum [Member] | Capital Improvements [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	5 years
Maximum [Member] | Capital Improvements [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful lives for real estate assets	7 years