Geographic Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Revenue by Selected Geographic Area Information

Selected geographic area information was as follows:

	2018		2017		2016
Geographic Information
Revenue — to unaffiliated customers(1):
United States	$	1,483.2	$	1,373.0	$	1,361.6
International	1,583.6		1,516.0		1,551.9
Revenue	$	3,066.8	$	2,889.0	$	2,913.5
Long-lived assets(2):
United States	$	602.6	$	604.7	$	463.8
United Kingdom	187.5		204.4		190.6
Other foreign countries	195.8		190.2		173.0
Long-lived assets	$	985.9	$	999.3	$	827.4

(1) Revenue is attributed to the countries based on the location of the customer.

(2) Long-lived assets consist of property and equipment, net, and certain noncurrent assets.

Long-lived Assets by Selected Geographic Area Information

Selected geographic area information was as follows:

	2018		2017		2016
Geographic Information
Revenue — to unaffiliated customers(1):
United States	$	1,483.2	$	1,373.0	$	1,361.6
International	1,583.6		1,516.0		1,551.9
Revenue	$	3,066.8	$	2,889.0	$	2,913.5
Long-lived assets(2):
United States	$	602.6	$	604.7	$	463.8
United Kingdom	187.5		204.4		190.6
Other foreign countries	195.8		190.2		173.0
Long-lived assets	$	985.9	$	999.3	$	827.4

(1) Revenue is attributed to the countries based on the location of the customer.

(2) Long-lived assets consist of property and equipment, net, and certain noncurrent assets.