Subsequent Event (Notes)	9 Months Ended
Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENT Kite Pharma, Inc. On October 3, 2017, the closing date, we acquired all of the outstanding common stock of Kite. As a result, Kite became our wholly-owned subsidiary. Kite uses a patient’s own immune cells to fight cancer. Kite has developed engineered cell therapies that express either a chimeric antigen receptor (CAR) or an engineered T cell receptor, depending on the type of cancer. Kite’s most advanced therapy candidate, axi-cel, is a CAR T therapy. In October 2017, axi-cel, now known commercially as Yescarta, was approved by FDA, making it the first to market as a treatment for refractory aggressive non-Hodgkin lymphoma, which includes diffuse large B-cell lymphoma (DLBCL), transformed follicular lymphoma (TFL) and primary mediastinal B-cell lymphoma (PMBCL). A marketing authorization application has also been filed for axi-cel for the treatment of relapsed/refractory DLBCL, TFL and PMBCL with the European Medicines Agency, representing the first known submission in Europe for a CAR T therapy. Kite has additional candidates in clinical trials in both hematologic cancers and solid tumors, including KITE-585, a CAR T therapy candidate that targets B-cell maturation antigen expressed in multiple myeloma. This transaction will be accounted for as a business combination. The acquisition price was approximately $11.2 billion, consisting of approximately $11.1 billion in cash and approximately $0.1 billion representing the portion of the replaced stock-based compensation attributable to the pre-combination period. In addition, approximately $0.7 billion was excluded from the acquisition price representing the portion of the replaced stock-based compensation attributable to the post combination period, which is expected to be recognized through 2021. Given the timing of the closing of this transaction, we are currently in the process of valuing the assets acquired and liabilities assumed in the business combination. As a result, we are not yet able to provide the amounts to be recognized as of the closing date for the major classes of assets acquired and liabilities assumed and other related disclosures. We will include this and other related information in our Annual Report on Form 10-K for the year ending December 31, 2017. We financed the transaction with $3.0 billion in senior unsecured notes issued in September 2017, a $6.0 billion term loan facility credit agreement entered into in September 2017 and drawn in October 2017, as well as cash on hand. See Note 8, Debt and Credit Facilities for additional information.

SUBSEQUENT EVENT

Kite Pharma, Inc.

On October 3, 2017, the closing date, we acquired all of the outstanding common stock of Kite. As a result, Kite became our wholly-owned subsidiary. Kite uses a patient’s own immune cells to fight cancer. Kite has developed engineered cell therapies that express either a chimeric antigen receptor (CAR) or an engineered T cell receptor, depending on the type of cancer. Kite’s most advanced therapy candidate, axi-cel, is a CAR T therapy. In October 2017, axi-cel, now known commercially as Yescarta, was approved by FDA, making it the first to market as a treatment for refractory aggressive non-Hodgkin lymphoma, which includes diffuse large B-cell lymphoma (DLBCL), transformed follicular lymphoma (TFL) and primary mediastinal B-cell lymphoma (PMBCL). A marketing authorization application has also been filed for axi-cel for the treatment of relapsed/refractory DLBCL, TFL and PMBCL with the European Medicines Agency, representing the first known submission in Europe for a CAR T therapy. Kite has additional candidates in clinical trials in both hematologic cancers and solid tumors, including KITE-585, a CAR T therapy candidate that targets B-cell maturation antigen expressed in multiple myeloma. This transaction will be accounted for as a business combination.

The acquisition price was approximately $11.2 billion, consisting of approximately $11.1 billion in cash and approximately $0.1 billion representing the portion of the replaced stock-based compensation attributable to the pre-combination period. In addition, approximately $0.7 billion was excluded from the acquisition price representing the portion of the replaced stock-based compensation attributable to the post combination period, which is expected to be recognized through 2021. Given the timing of the closing of this transaction, we are currently in the process of valuing the assets acquired and liabilities assumed in the business combination. As a result, we are not yet able to provide the amounts to be recognized as of the closing date for the major classes of assets acquired and liabilities assumed and other related disclosures. We will include this and other related information in our Annual Report on Form 10-K for the year ending December 31, 2017.

We financed the transaction with $3.0 billion in senior unsecured notes issued in September 2017, a $6.0 billion term loan facility credit agreement entered into in September 2017 and drawn in October 2017, as well as cash on hand. See Note 8, Debt and Credit Facilities for additional information.