XML 56 R35.htm IDEA: XBRL DOCUMENT
v3.19.3

Leases (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2019
Leases [Abstract] |
Schedule of operating leases | The following table summarizes the presentation in our condensed consolidated balance sheets of our operating leases:
(In millions) | Balance sheet location |  | As of September 30, 2019
Assets: |  |  |
Operating lease assets | Operating lease assets |  | $ | 422.0 |
Liabilities |  |  |
Current operating lease liabilities | Accrued expenses and other |  | $ | 70.6 |
Non-current operating lease liabilities | Long-term operating lease liabilities |  | 410.5 |
Total operating lease liabilities |  |  | $ | 481.1 |
Operating lease cost | The following table summarizes the effect of lease costs in our condensed consolidated statements of income:
|  |  | For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
(In millions) | Income Statement Location |  | 2019 |  | 2019
Operating lease cost | Research and development |  | $ | 1.8 |  |  | $ | 5.5 |
| Selling, general and administrative |  | 21.3 |  |  | 62.7 |
Sublease income | Selling, general and administrative |  | (6.2 | ) |  | (19.3 | )
| Other (income) expense, net |  | (1.0 | ) |  | (2.9 | )
Net lease cost |  |  | $ | 15.9 |  |  | $ | 46.0 |
Operating lease liability maturity | The minimum lease payments for the next five years and thereafter is expected to be as follows:
(In millions) | As of September 30, 2019
2019 (remaining three months) | $ | 29.9 |
2020 | 80.0 |
2021 | 74.8 |
2022 | 71.5 |
2023 | 70.2 |
2024 | 67.3 |
Thereafter | 148.7 |
Total lease payments | $ | 542.4 |
Less: interest | 61.3 |
Present value of operating lease liabilities | $ | 481.1 |
Minimum lease payments | Under the prior lease accounting guidance minimum rental commitments under non-cancelable leases, net of income from subleases, for each of the next five years and total thereafter as of December 31, 2018, were as follows:
(In millions) | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | Thereafter |  | Total
Minimum lease payments | $ | 87.0 |  |  | $ | 80.7 |  |  | $ | 75.9 |  |  | $ | 71.7 |  |  | $ | 71.0 |  |  | $ | 215.3 |  |  | $ | 601.6 |
Less: income from subleases(1) | (26.8 | ) |  | (25.6 | ) |  | (23.7 | ) |  | (24.0 | ) |  | (24.3 | ) |  | (58.4 | ) |  | (182.8 | )
Net minimum lease payments | $ | 60.2 |  |  | $ | 55.1 |  |  | $ | 52.2 |  |  | $ | 47.7 |  |  | $ | 46.7 |  |  | $ | 156.9 |  |  | $ | 418.8 |
(1) Represents sublease income expected to be received for the vacated manufacturing facility in Cambridge, MA, the vacated portion of our Weston, MA facility and other facilities throughout the world.
Operating lease weighted average remaining term and discount rate | The weighted average remaining lease term and weighted average discount rate of our operating leases are as follows:
| As of September 30, 2019
Weighted average remaining lease term in years | 7.2 |
Weighted average discount rate | 3.3 | %
Operating lease supplemental cash flow disclosure | Supplemental disclosure of cash flow information related to our operating leases included in cash flows provided by operating activities in our condensed consolidated statements of cash flows is as follows:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
(In millions) | 2019 |  | 2019
Cash paid for amounts included in the measurement of lease liabilities | $ | 23.5 |  |  | $ | 70.3 |
Operating lease assets obtained in exchange for lease obligations | $ | 4.6 |  |  | $ | 17.3 |

X
- Definition Lessee Lease Table [Table Text Block] + References No definition available. + Details
Name: | biib_LesseeLeaseTableTableTextBlock
Namespace Prefix: | biib_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating lease supplemental cash flow disclosure [Table Text Block] + References No definition available. + Details
Name: | biib_OperatingleasesupplementalcashflowdisclosureTableTextBlock
Namespace Prefix: | biib_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating lease weighted average remaining term and discount rate [Table Text Block] + References No definition available. + Details
Name: | biib_OperatingleaseweightedaverageremainingtermanddiscountrateTableTextBlock
Namespace Prefix: | biib_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
Name: | us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration