Restructuring	12 Months Ended
Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring In 2014, we initiated a restructuring plan to invest in continuing innovation and the launch of our new pipeline molecules, while improving our cost structure. As part of the plan, we closed facilities in Washington State and Colorado and are reducing the number of buildings we occupy at our headquarters in Thousand Oaks, California, as well as at other locations. We completed the activities associated with this restructuring plan in 2018. Through December 31, 2018, we incurred $548 million of separation costs and other headcount-related costs for staff reductions and $261 million of net asset-related charges, which consist primarily of asset impairments, accelerated depreciation and other related costs resulting from the consolidation of our worldwide facilities. During the years ended December 31, 2018, 2017 and 2016, we incurred restructuring costs of $12 million, $88 million and $37 million, respectively. As of December 31, 2018 and 2017, the restructuring liabilities were not significant.

Restructuring

12 Months Ended

Dec. 31, 2018

Restructuring and Related Activities [Abstract]

In 2014, we initiated a restructuring plan to invest in continuing innovation and the launch of our new pipeline molecules, while improving our cost structure. As part of the plan, we closed facilities in Washington State and Colorado and are reducing the number of buildings we occupy at our headquarters in Thousand Oaks, California, as well as at other locations. We completed the activities associated with this restructuring plan in 2018.

Through December 31, 2018, we incurred $548 million of separation costs and other headcount-related costs for staff reductions and $261 million of net asset-related charges, which consist primarily of asset impairments, accelerated depreciation and other related costs resulting from the consolidation of our worldwide facilities. During the years ended December 31, 2018, 2017 and 2016, we incurred restructuring costs of $12 million, $88 million and $37 million, respectively. As of December 31, 2018 and 2017, the restructuring liabilities were not significant.