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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2019
Accounting Policies [Abstract] |
Schedule of changes in the carrying value of goodwill attributable to each reportable operating segment | The changes in the carrying value of goodwill attributable to each reportable operating segment for the nine months ended September 30, 2019 are as follows:
| North American Records and Information Management Business |  | North American Data Management Business |  | Western European Business |  | Other International Business |  | Global Data Center Business |  | Corporate and Other Business |  | Total Consolidated
Goodwill balance, net of accumulated amortization as of December 31, 2018 | $ | 2,251,795 |  |  | $ | 493,491 |  |  | $ | 381,806 |  |  | $ | 818,223 |  |  | $ | 425,956 |  |  | $ | 69,759 |  |  | $ | 4,441,030 |
Deductible goodwill acquired during the year | 5,109 |  |  | — |  |  | 675 |  |  | 10,333 |  |  | — |  |  | — |  |  | 16,117 |
Non-deductible goodwill acquired during the year | — |  |  | — |  |  | 5,011 |  |  | 4,638 |  |  | — |  |  | 1,904 |  |  | 11,553 |
Fair value and other adjustments(1) | 55 |  |  | — |  |  | (1,012 | ) |  | 1,321 |  |  | 258 |  |  | (417 | ) |  | 205 |
Currency effects | 5,501 |  |  | 1,495 |  |  | (15,717 | ) |  | (32,461 | ) |  | (5,182 | ) |  | (546 | ) |  | (46,910 | )
Goodwill balance, net accumulated amortization as of September 30, 2019 | $ | 2,262,460 |  |  | $ | 494,986 |  |  | $ | 370,763 |  |  | $ | 802,054 |  |  | $ | 421,032 |  |  | $ | 70,700 |  |  | $ | 4,421,995 |
Accumulated Goodwill Impairment Balance as of December 31, 2018 | $ | 85,909 |  |  | $ | — |  |  | $ | 46,500 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,011 |  |  | $ | 135,420 |
Accumulated Goodwill Impairment Balance as of September 30, 2019 | $ | 85,909 |  |  | $ | — |  |  | $ | 46,500 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,011 |  |  | $ | 135,420 |
_______________________________________________________________________________
(1) | Total fair value and other adjustments primarily include $867 in net adjustments related to property, plant and equipment, customer relationships and data center lease-based intangible assets and deferred income taxes and other liabilities offset by $662 of net cash received related to certain acquisitions completed in 2018.
Schedule of components of amortizable intangible assets | The other finite-lived intangible assets as of September 30, 2019 and December 31, 2018 are as follows:
| September 30, 2019 |  | December 31, 2018
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Other finite-lived intangible assets (included in Other, a component of Other assets, net) | $ | 19,842 |  |  | $ | (17,385 | ) |  | $ | 2,457 |  |  | $ | 20,310 |  |  | $ | (14,798 | ) |  | $ | 5,512 |
The gross carrying amount and accumulated amortization of our finite-lived intangible assets as of September 30, 2019 and December 31, 2018 are as follows:
| September 30, 2019 |  | December 31, 2018
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Assets: |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangible assets | $ | 1,747,535 |  |  | $ | (529,164 | ) |  | $ | 1,218,371 |  |  | $ | 1,718,919 |  |  | $ | (455,705 | ) |  | $ | 1,263,214 |
Customer inducements | 53,097 |  |  | (30,298 | ) |  | 22,799 |  |  | 56,478 |  |  | (34,181 | ) |  | 22,297 |
Data center lease-based intangible assets(1) | 264,382 |  |  | (90,265 | ) |  | 174,117 |  |  | 271,818 |  |  | (50,807 | ) |  | 221,011 |
Third-party commissions asset(2) | 31,708 |  |  | (3,001 | ) |  | 28,707 |  |  | 30,071 |  |  | (1,089 | ) |  | 28,982 |
| $ | 2,096,722 |  |  | $ | (652,728 | ) |  | $ | 1,443,994 |  |  | $ | 2,077,286 |  |  | $ | (541,782 | ) |  | $ | 1,535,504 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Data center below-market leases | $ | 12,720 |  |  | $ | (3,424 | ) |  | $ | 9,296 |  |  | $ | 12,318 |  |  | $ | (1,642 | ) |  | $ | 10,676 |
_______________________________________________________________________________
(1) | Includes data center in-place lease intangible assets, data center tenant relationship intangible assets and data center above-market in-place lease intangible assets.
(2) | Third-party commissions asset is included in Other, a component of Other assets, net in the accompanying Condensed Consolidated Balance Sheets as of September 30, 2019 and December 31, 2018. The third-party commissions asset is primarily comprised of additional payments associated with the execution of future customer contracts through the one-year anniversary of the acquisition of IODC, as described in Note 4.
Schedule of amortization expenses | Amortization expense associated with finite-lived intangible assets, revenue reduction associated with the amortization of customer inducements and net revenue reduction associated with the amortization of data center above-market leases and data center below-market leases for the three and nine months ended September 30, 2019 and 2018 are as follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Amortization expense included in depreciation and amortization associated with: |  |  |  |  |  |  |  |
Customer relationship and customer inducement intangible assets |  | $ | 29,064 |  |  | $ | 26,782 |  |  | $ | 85,228 |  |  | $ | 84,401 |
Data center in-place leases and tenant relationships |  | 11,356 |  |  | 12,036 |  |  | 35,337 |  |  | 30,437 |
Third-party commissions asset and other finite-lived intangible assets |  | 2,515 |  |  | 642 |  |  | 5,456 |  |  | 3,486 |
Revenue reduction associated with amortization of: |  |  |  |  |  |  |  |
Customer inducements |  | $ | 2,303 |  |  | $ | 3,229 |  |  | $ | 7,641 |  |  | $ | 8,782 |
Data center above-market leases and data center below-market leases |  | 936 |  |  | 1,276 |  |  | 2,776 |  |  | 3,648 |
Schedule of amortization expense associated with commissions asset and Intake Costs | The costs of the initial intake of customer records into physical storage ("Intake Costs") and capitalized commissions asset (collectively, "Contract Fulfillment Costs") as of September 30, 2019 and December 31, 2018 are as follows:
|  |  |  | September 30, 2019 |  | December 31, 2018
Description |  | Location in Balance Sheet |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Intake Costs asset |  | Other (within Other Assets, Net) |  | $ | 37,938 |  |  | $ | (20,974 | ) |  | $ | 16,964 |  |  | $ | 39,748 |  |  | $ | (24,504 | ) |  | $ | 15,244 |
Capitalized commissions asset |  | Other (within Other Assets, Net) |  | 56,585 |  |  | (21,933 | ) |  | 34,652 |  |  | 58,424 |  |  | (34,637 | ) |  | 23,787 |
Amortization expense associated with the Intake Costs asset and capitalized commissions asset for the three and nine months ended September 30, 2019 and 2018 are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Intake Costs asset | $ | 2,250 |  |  | $ | 2,294 |  |  | $ | 7,764 |  |  | $ | 7,915 |
Capitalized commissions asset | 4,224 |  |  | 3,053 |  |  | 14,105 |  |  | 10,433 |
Schedule of deferred revenue liabilities | Deferred revenue liabilities are reflected as follows in our Condensed Consolidated Balance Sheets:
Description |  | Location in Balance Sheet |  | September 30, 2019 |  | December 31, 2018
Deferred revenue - Current |  | Deferred revenue |  | $ | 257,328 |  |  | $ | 264,823 |
Deferred revenue - Long-term |  | Other Long-term Liabilities |  | 26,572 |  |  | 26,401 |
Schedule of operating and financing lease right-of-use assets and lease liabilities | Operating and financing lease right-of-use assets and lease liabilities as of September 30, 2019 and January 1, 2019 (date of adoption of ASU 2016-02) are as follows:
Description |  | Location in Balance Sheet |  | September 30, 2019 |  | January 1, 2019 (Date of Adoption of ASU 2016-02)
Assets: |  |  |  |  |  |
Operating lease right-of-use assets(1) |  | Operating lease right-of-use assets |  | $ | 1,765,496 |  |  | $ | 1,825,721 |
Financing lease right-of-use assets, net of accumulated depreciation(2) |  | Property, Plant and Equipment, Net |  | 327,264 |  |  | 361,078 |
Total |  |  |  | $ | 2,092,760 |  |  | $ | 2,186,799 |
Liabilities: |  |  |  |  |  |
Current |  |  |  |  |  |
Operating lease liabilities |  | Accrued expenses and other current liabilities |  | $ | 216,176 |  |  | $ | 209,911 |
Financing lease liabilities |  | Current portion of long-term debt |  | 47,112 |  |  | 50,437 |
Total current lease liabilities |  |  |  | 263,288 |  |  | 260,348 |
Long-term |  |  |  |  |  |
Operating lease liabilities |  | Long-term Operating Lease Liabilities, net of current portion |  | 1,626,907 |  |  | 1,685,771 |
Financing lease liabilities |  | Long-term Debt, net of current portion |  | 318,986 |  |  | 350,263 |
Total long-term lease liabilities |  |  |  | 1,945,893 |  |  | 2,036,034 |
Total |  |  |  | $ | 2,209,181 |  |  | $ | 2,296,382 |
______________________________________________________________ (1) At September 30, 2019, these assets are comprised of approximately 98% real estate related assets (which include land, buildings and racking) and 2% non-real estate related assets (which include warehouse equipment, vehicles, furniture and fixtures and computer hardware and software). (2) At September 30, 2019, these assets are comprised of approximately 64% real estate related assets and 36% non-real estate related assets.
Schedule of lease, cost | Weighted average remaining lease terms and discount rates as of September 30, 2019 are as follows:
|  | Remaining Lease Term
Operating leases |  | 11.0 Years |
Financing leases |  | 11.0 Years |
|  | Discount Rate
Operating leases |  | 7.1 | %
Financing leases |  | 5.6 | %
The components of the lease expense for the three and nine months ended September 30, 2019 are as follows:
Description |  | Location in Statement of Operations |  | Three Months Ended September 30, 2019 |  | Nine Months Ended September 30, 2019
Operating lease cost(1) |  | Cost of sales and Selling, general and administrative |  | $ | 114,727 |  |  | $ | 343,282 |
Financing lease cost: |  |  |  |  |  |
Depreciation of financing lease right-of-use assets |  | Depreciation and amortization |  | $ | 14,679 |  |  | $ | 45,950 |
Interest expense for financing lease liabilities |  | Interest Expense, Net |  | 4,905 |  |  | 15,972 |
Total financing lease cost |  |  |  | $ | 19,584 |  |  | $ | 61,922 |
______________________________________________________________ (1) Of the $114,727 incurred for the three months ended September 30, 2019, $111,423 is included within Cost of sales and $3,304 is included within Selling, general and administrative expenses. Of the $343,282 incurred for the nine months ended September 30, 2019, $333,742 is included within Cost of sales and $9,540 is included within Selling, general and administrative expenses. Operating lease cost includes variable lease costs of $26,121 and $78,712 for the three and nine months ended September 30, 2019, respectively. Supplemental cash flow information relating to our leases for the nine months ended September 30, 2019 is as follows:
Cash paid for amounts included in measurement of lease liabilities: |  | Nine Months Ended September 30, 2019
Operating cash flows used in operating leases |  | $ | 252,277 |
Operating cash flows used in financing leases (interest) |  | 15,972 |
Financing cash flows used in financing leases |  | 44,808 |
Non-cash items: |  |
Operating lease modifications and reassessments |  | $ | 42,418 |
New operating leases (including acquisitions) |  | 117,193 |
New financing leases, modifications and reassessments |  | 20,699 |
Schedule of future minimum lease payments for capital leases | The estimated minimum future lease payments as of September 30, 2019, are as follows:
Year |  | Operating Leases(1) |  | Sublease Income |  | Financing Leases(1)
2019 (excluding the nine months ended September 30, 2019) |  | $ | 87,009 |  |  | $ | (1,646 | ) |  | $ | 32,386 |
2020 |  | 323,448 |  |  | (7,520 | ) |  | 57,887 |
2021 |  | 298,656 |  |  | (5,185 | ) |  | 52,685 |
2022 |  | 274,021 |  |  | (4,905 | ) |  | 46,358 |
2023 |  | 248,066 |  |  | (4,795 | ) |  | 38,695 |
Thereafter |  | 1,505,195 |  |  | (10,673 | ) |  | 292,903 |
Total minimum lease payments |  | 2,736,395 |  |  | $ | (34,724 | ) |  | 520,914 |
Less amounts representing interest or imputed interest |  | (893,312 | ) |  |  |  |  | (154,816 | )
Present value of lease obligations |  | $ | 1,843,083 |  |  |  |  |  | $ | 366,098 |
The estimated minimum future lease payments as of December 31, 2018 are as follows:
Year |  | Operating Leases(1) |  | Sublease Income |  | Financing Leases(1)(2)
2019 |  | $ | 323,454 |  |  | $ | (7,525 | ) |  | $ | 80,513 |
2020 |  | 293,276 |  |  | (7,200 | ) |  | 71,335 |
2021 |  | 267,379 |  |  | (7,063 | ) |  | 61,269 |
2022 |  | 246,128 |  |  | (6,694 | ) |  | 52,832 |
2023 |  | 221,808 |  |  | (6,409 | ) |  | 44,722 |
Thereafter |  | 1,287,807 |  |  | (6,279 | ) |  | 377,750 |
Total minimum lease payments |  | $ | 2,639,852 |  |  | $ | (41,170 | ) |  | 688,421 |
Less amounts representing interest |  |  |  |  |  |  | (241,248 | )
Present value of lease obligations |  |  |  |  |  |  | $ | 447,173 |
_______________________________________________________________________________
(1) | Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.
(2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.
Schedule of finance lease, liability, maturity | The estimated minimum future lease payments as of September 30, 2019, are as follows:
Year |  | Operating Leases(1) |  | Sublease Income |  | Financing Leases(1)
2019 (excluding the nine months ended September 30, 2019) |  | $ | 87,009 |  |  | $ | (1,646 | ) |  | $ | 32,386 |
2020 |  | 323,448 |  |  | (7,520 | ) |  | 57,887 |
2021 |  | 298,656 |  |  | (5,185 | ) |  | 52,685 |
2022 |  | 274,021 |  |  | (4,905 | ) |  | 46,358 |
2023 |  | 248,066 |  |  | (4,795 | ) |  | 38,695 |
Thereafter |  | 1,505,195 |  |  | (10,673 | ) |  | 292,903 |
Total minimum lease payments |  | 2,736,395 |  |  | $ | (34,724 | ) |  | 520,914 |
Less amounts representing interest or imputed interest |  | (893,312 | ) |  |  |  |  | (154,816 | )
Present value of lease obligations |  | $ | 1,843,083 |  |  |  |  |  | $ | 366,098 |
The estimated minimum future lease payments as of December 31, 2018 are as follows:
Year |  | Operating Leases(1) |  | Sublease Income |  | Financing Leases(1)(2)
2019 |  | $ | 323,454 |  |  | $ | (7,525 | ) |  | $ | 80,513 |
2020 |  | 293,276 |  |  | (7,200 | ) |  | 71,335 |
2021 |  | 267,379 |  |  | (7,063 | ) |  | 61,269 |
2022 |  | 246,128 |  |  | (6,694 | ) |  | 52,832 |
2023 |  | 221,808 |  |  | (6,409 | ) |  | 44,722 |
Thereafter |  | 1,287,807 |  |  | (6,279 | ) |  | 377,750 |
Total minimum lease payments |  | $ | 2,639,852 |  |  | $ | (41,170 | ) |  | 688,421 |
Less amounts representing interest |  |  |  |  |  |  | (241,248 | )
Present value of lease obligations |  |  |  |  |  |  | $ | 447,173 |
_______________________________________________________________________________
(1) | Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.
(2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.
Schedule of lessee, operating lease, liability, maturity | The estimated minimum future lease payments as of September 30, 2019, are as follows:
Year |  | Operating Leases(1) |  | Sublease Income |  | Financing Leases(1)
2019 (excluding the nine months ended September 30, 2019) |  | $ | 87,009 |  |  | $ | (1,646 | ) |  | $ | 32,386 |
2020 |  | 323,448 |  |  | (7,520 | ) |  | 57,887 |
2021 |  | 298,656 |  |  | (5,185 | ) |  | 52,685 |
2022 |  | 274,021 |  |  | (4,905 | ) |  | 46,358 |
2023 |  | 248,066 |  |  | (4,795 | ) |  | 38,695 |
Thereafter |  | 1,505,195 |  |  | (10,673 | ) |  | 292,903 |
Total minimum lease payments |  | 2,736,395 |  |  | $ | (34,724 | ) |  | 520,914 |
Less amounts representing interest or imputed interest |  | (893,312 | ) |  |  |  |  | (154,816 | )
Present value of lease obligations |  | $ | 1,843,083 |  |  |  |  |  | $ | 366,098 |
The estimated minimum future lease payments as of December 31, 2018 are as follows:
Year |  | Operating Leases(1) |  | Sublease Income |  | Financing Leases(1)(2)
2019 |  | $ | 323,454 |  |  | $ | (7,525 | ) |  | $ | 80,513 |
2020 |  | 293,276 |  |  | (7,200 | ) |  | 71,335 |
2021 |  | 267,379 |  |  | (7,063 | ) |  | 61,269 |
2022 |  | 246,128 |  |  | (6,694 | ) |  | 52,832 |
2023 |  | 221,808 |  |  | (6,409 | ) |  | 44,722 |
Thereafter |  | 1,287,807 |  |  | (6,279 | ) |  | 377,750 |
Total minimum lease payments |  | $ | 2,639,852 |  |  | $ | (41,170 | ) |  | 688,421 |
Less amounts representing interest |  |  |  |  |  |  | (241,248 | )
Present value of lease obligations |  |  |  |  |  |  | $ | 447,173 |
_______________________________________________________________________________
(1) | Estimated minimum future lease payments exclude variable common area maintenance charges, insurance and taxes. Differences in estimated lease payments between September 30, 2019 and December 31, 2018 are primarily related to adjustments to account for certain build to suit leases that were accounted for as financing obligations under ASC 840 but are accounted for as operating leases under ASU 2016-02 and foreign currency exchange rate impacts.
(2) Includes capital lease and financing obligations associated with build to suit lease transactions at December 31, 2018.
Schedule of lessor, operating lease, maturity | The future minimum lease payments we expect to receive under non-cancellable data center operating leases, for which we are the lessor, excluding month to month leases, for the next five years are as follows:
Year |  | Future minimum lease payments
2019 (excluding the nine months ended September 30, 2019) |  | $ | 58,381 |
2020 |  | 177,528 |
2021 |  | 118,980 |
2022 |  | 83,677 |
2023 |  | 67,569 |
Schedule of stock option activity | A summary of stock option activity for the nine months ended September 30, 2019 is as follows:
| Stock Options
Outstanding at December 31, 2018 | 4,271,834 |
Granted | 920,706 |
Exercised | (236,704 | )
Forfeited | (13,542 | )
Expired | (16,715 | )
Outstanding at September 30, 2019 | 4,925,579 |
Options exercisable at September 30, 2019 | 3,128,621 |
Options expected to vest | 1,716,446 |
Schedule of restricted stock and RSU activity | The fair value of RSUs vested during the three and nine months ended September 30, 2019 and 2018 is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Fair value of RSUs vested | $ | 3,092 |  |  | $ | 3,189 |  |  | $ | 20,802 |  |  | $ | 19,195 |
A summary of RSU activity for the nine months ended September 30, 2019 is as follows:
| RSUs
Non-vested at December 31, 2018 | 1,196,566 |
Granted | 752,555 |
Vested | (611,828 | )
Forfeited | (81,437 | )
Non-vested at September 30, 2019 | 1,255,856 |
Schedule of performance units | The fair value of earned PUs that vested during the three and nine months ended September 30, 2019 and 2018 is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Fair value of earned PUs that vested | $ | 1,176 |  |  | $ | 84 |  |  | $ | 7,679 |  |  | $ | 3,117 |
Schedule of Performance Unit (PU) activity | A summary of PU activity for the nine months ended September 30, 2019 is as follows:
| Original PU Awards |  | PU Adjustment(1) |  | Total PU Awards
Non-vested at December 31, 2018 | 967,049 |  |  | (299,948 | ) |  | 667,101 |
Granted | 380,856 |  |  | — |  |  | 380,856 |
Vested | (202,141 | ) |  | — |  |  | (202,141 | )
Forfeited/Performance or Market Conditions Not Achieved | (13,898 | ) |  | (14,850 | ) |  | (28,748 | )
Non-vested at September 30, 2019 | 1,131,866 |  |  | (314,798 | ) |  | 817,068 |
_______________________________________________________________________________ (1) Represents an increase or decrease in the number of original PUs awarded based on either the final performance criteria or market condition achievement at the end of the performance period of such PUs.
Schedule of calculation of basic and diluted net income (loss) per share attributable to the entity | The calculation of basic and diluted income (loss) per share for the three and nine months ended September 30, 2019 and 2018 are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Income (loss) from continuing operations | $ | 108,284 |  |  | $ | 77,349 |  |  | $ | 231,107 |  |  | $ | 209,001 |
Less: Net income (loss) attributable to noncontrolling interests | 609 |  |  | (125 | ) |  | 1,534 |  |  | 485 |
Income (loss) from continuing operations (utilized in numerator of Earnings Per Share calculation) | $ | 107,675 |  |  | $ | 77,474 |  |  | $ | 229,573 |  |  | $ | 208,516 |
(Loss) income from discontinued operations, net of tax | $ | — |  |  | $ | (11,605 | ) |  | $ | 104 |  |  | $ | (12,427 | )
Net income (loss) attributable to Iron Mountain Incorporated | $ | 107,675 |  |  | $ | 65,869 |  |  | $ | 229,677 |  |  | $ | 196,089 |
Weighted-average shares—basic | 287,152,000 |  |  | 286,159,000 |  |  | 286,869,000 |  |  | 285,801,000 |
Effect of dilutive potential stock options | 93,752 |  |  | 264,451 |  |  | 157,928 |  |  | 250,574 |
Effect of dilutive potential RSUs and PUs | 445,081 |  |  | 558,891 |  |  | 528,387 |  |  | 463,583 |
Weighted-average shares—diluted | 287,690,833 |  |  | 286,982,342 |  |  | 287,555,315 |  |  | 286,515,157 |
Earnings (losses) per share—basic: |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | 0.37 |  |  | $ | 0.27 |  |  | $ | 0.80 |  |  | $ | 0.73 |
(Loss) income from discontinued operations, net of tax | — |  |  | (0.04 | ) |  | — |  |  | (0.04 | )
Net income (loss) attributable to Iron Mountain Incorporated(1) | $ | 0.37 |  |  | $ | 0.23 |  |  | $ | 0.80 |  |  | $ | 0.69 |
Earnings (losses) per share—diluted: |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | 0.37 |  |  | $ | 0.27 |  |  | $ | 0.80 |  |  | $ | 0.73 |
(Loss) income from discontinued operations, net of tax | — |  |  | (0.04 | ) |  | — |  |  | (0.04 | )
Net income (loss) attributable to Iron Mountain Incorporated(1) | $ | 0.37 |  |  | $ | 0.23 |  |  | $ | 0.80 |  |  | $ | 0.68 |
Antidilutive stock options, RSUs and PUs, excluded from the calculation | 4,782,661 |  |  | 3,253,975 |  |  | 4,590,645 |  |  | 3,256,206 |
_______________________________________________________________________________ (1) Columns may not foot due to rounding.
Schedule of effective income tax rate reconciliation | Our effective tax rates for the three and nine months ended September 30, 2019 and 2018 are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019(1) |  | 2018(1) |  | 2019(1) |  | 2018(2)
Effective Tax Rate | 16.8 | % |  | 15.3 | % |  | 15.7 | % |  | 16.0 | %
_______________________________________________________________________________
(1) | The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three and nine months ended September 30, 2019 and for the three months ended September 30, 2018 were the benefit derived from the dividends paid deduction and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.
(2) The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the nine months ended September 30, 2018 were the benefit derived from the dividends paid deduction, a discrete tax benefit of approximately $14,000 associated with the resolution of a tax matter and the impact of differences in the tax rates at which our foreign earnings are subject, including foreign exchange gains and losses in different jurisdictions with different tax rates.
Schedule of assets and liabilities carried at fair value measured on a recurring basis | The assets and liabilities carried at fair value measured on a recurring basis as of September 30, 2019 and December 31, 2018, respectively, are as follows:
|  |  |  | Fair Value Measurements at September 30, 2019 Using
Description |  | Total Carrying Value at September 30, 2019 |  | Quoted prices in active markets (Level 1) |  |  |  | Significant other observable inputs (Level 2) |  |  |  | Significant unobservable inputs (Level 3)
Money Market Funds(1) |  | $ | 30,123 |  |  | $ | — |  |  |  |  | $ | 30,123 |  |  |  |  | $ | — |
Trading Securities |  | 9,996 |  |  | 9,540 |  |  | (2) |  | 456 |  |  | (3) |  | — |
Derivative Assets(4) |  | 1,972 |  |  | — |  |  |  |  | 1,972 |  |  |  |  | — |
Derivative Liabilities(4) |  | 12,046 |  |  | — |  |  |  |  | 12,046 |  |  |  |  | — |
|  |  |  | Fair Value Measurements at December 31, 2018 Using
Description |  | Total Carrying Value at December 31, 2018 |  | Quoted prices in active markets (Level 1) |  |  |  | Significant other observable inputs (Level 2) |  |  |  | Significant unobservable inputs (Level 3)
Time Deposits(1) |  | $ | 956 |  |  | $ | — |  |  |  |  | $ | 956 |  |  |  |  | $ | — |
Trading Securities |  | 10,753 |  |  | 10,248 |  |  | (2) |  | 505 |  |  | (3) |  | — |
Derivative Assets(4) |  | 93 |  |  | — |  |  |  |  | 93 |  |  |  |  | — |
Derivative Liabilities(4) |  | 973 |  |  | — |  |  |  |  | 973 |  |  |  |  | — |
_______________________________________________________________________________
(1) | Money market funds and time deposits are measured based on quoted prices for similar assets and/or subsequent transactions.
(2) | Certain trading securities are measured at fair value using quoted market prices.
(3) | Certain trading securities are measured based on inputs that are observable other than quoted market prices.
(4) Derivative assets and liabilities include (i) interest rate swap agreements, including forward-starting interest rate swap agreements, to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness, (ii) cross-currency swap agreements to hedge the variability of exchange rates impacts between the United States dollar and the Euro and certain of our Euro denominated subsidiaries and (iii) short-term (six months or less) foreign exchange currency forward contracts that we have entered into to hedge certain of our foreign exchange intercompany exposures. Our derivative financial instruments are measured using industry standard valuation models using market-based observable inputs, including interest rate curves, forward and spot prices for currencies and implied volatilities. Credit risk is also factored into the determination of the fair value of our derivative financial instruments. See Note 3 for additional information on our derivative financial instruments.
Schedule of changes in accumulated other comprehensive items, net | The changes in accumulated other comprehensive items, net for the three and nine months ended September 30, 2019, respectively, are as follows:
| Three Months Ended September 30, 2019 |  | Nine Months Ended September 30, 2019
| Foreign Currency Translation Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total |  | Foreign Currency Translation Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total
Beginning of Period | $ | (253,243 | ) |  | $ | (8,578 | ) |  | $ | (261,821 | ) |  | $ | (264,691 | ) |  | $ | (973 | ) |  | $ | (265,664 | )
Other comprehensive (loss) income: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment | (82,886 | ) |  | — |  |  | (82,886 | ) |  | (71,438 | ) |  | — |  |  | (71,438 | )
Change in fair value of derivative instruments | — |  |  | (1,496 | ) |  | (1,496 | ) |  | — |  |  | (9,101 | ) |  | (9,101 | )
Total other comprehensive (loss) income | (82,886 | ) |  | (1,496 | ) |  | (84,382 | ) |  | (71,438 | ) |  | (9,101 | ) |  | (80,539 | )
End of Period | $ | (336,129 | ) |  | $ | (10,074 | ) |  | $ | (346,203 | ) |  | $ | (336,129 | ) |  | $ | (10,074 | ) |  | $ | (346,203 | )
The changes in accumulated other comprehensive items, net for the three and nine months ended September 30, 2018, respectively, are as follows:
| Three Months Ended September 30, 2018 |  | Nine Months Ended September 30, 2018
| Foreign Currency Translation Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total |  | Foreign Currency Translation Adjustments |  | Change in Fair Value of Derivative Instruments |  | Total
Beginning of Period | $ | (209,653 | ) |  | $ | 2,203 |  |  | $ | (207,450 | ) |  | $ | (103,989 | ) |  | $ | — |  |  | $ | (103,989 | )
Other comprehensive (loss) income: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment | (22,790 | ) |  | — |  |  | (22,790 | ) |  | (128,454 | ) |  | — |  |  | (128,454 | )
Change in fair value of derivative instruments | — |  |  | 1,980 |  |  | 1,980 |  |  | — |  |  | 4,183 |  |  | 4,183 |
Total other comprehensive (loss) income | (22,790 | ) |  | 1,980 |  |  | (20,810 | ) |  | (128,454 | ) |  | 4,183 |  |  | (124,271 | )
End of Period | $ | (232,443 | ) |  | $ | 4,183 |  |  | $ | (228,260 | ) |  | $ | (232,443 | ) |  | $ | 4,183 |  |  | $ | (228,260 | )
Schedule of other expense (income), net | Other (income) expense, net for the three and nine months ended September 30, 2019 and 2018 consists of the following:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Foreign currency transaction (gains) losses, net | $ | (18,251 | ) |  | $ | 664 |  |  | $ | (19,885 | ) |  | $ | 3,825 |
Other, net | 4,836 |  |  | (339 | ) |  | 6,488 |  |  | (2,405 | )
Other (Income) Expense, Net | $ | (13,415 | ) |  | $ | 325 |  |  | $ | (13,397 | ) |  | $ | 1,420 |
Schedule of immaterial restatement | The following table sets forth the effect of the immaterial restatement to certain line items of our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2018:
|  | Three Months Ended September 30, 2018 |  | Nine Months Ended September 30, 2018
Selling, general and administrative |  | $ | 1,459 |  |  | $ | 10,798 |
Total Operating Expenses |  | $ | 1,459 |  |  | $ | 10,798 |
Operating Income (Loss) |  | $ | (1,459 | ) |  | $ | (10,798 | )
Interest Expense, Net |  | $ | 97 |  |  | $ | 262 |
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes |  | $ | (1,556 | ) |  | $ | (11,060 | )
Provision (Benefit) for Income Taxes |  | $ | (277 | ) |  | $ | (1,916 | )
Income (Loss) from Continuing Operations |  | $ | (1,279 | ) |  | $ | (9,144 | )
Net Income (Loss) |  | $ | (1,279 | ) |  | $ | (9,144 | )
Net Income (Loss) Attributable to Iron Mountain Incorporated |  | $ | (1,279 | ) |  | $ | (9,144 | )
Earnings (Losses) per Share - Basic: |  |  |  |
Income (Loss) from Continuing Operations |  | $ | (0.01 | ) |  | $ | (0.03 | )
Net Income (Loss) Attributable to Iron Mountain Incorporated |  | $ | — |  |  | $ | (0.03 | )
Earnings (Losses) per Share - Diluted: |  |  |  |
Income (Loss) from Continuing Operations |  | $ | — |  |  | $ | (0.03 | )
Net Income (Loss) Attributable to Iron Mountain Incorporated |  | $ | — |  |  | $ | (0.04 | )
The following table sets forth the effect of the immaterial restatement to certain line items of our Consolidated Balance Sheet as of December 31, 2018:
|  | December 31, 2018
Total Other Assets, Net |  | $ | 4,971 |
Total Assets |  | $ | 4,971 |
Accrued expenses and other current liabilities |  | $ | 28,097 |
Total Current Liabilities |  | $ | 28,097 |
(Distribution in excess of earnings) Earnings in excess of distributions |  | $ | (23,126 | )
Total Iron Mountain Incorporated Stockholders' Equity |  | $ | (23,126 | )

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