Supplemental Cash Flows (Tables)

12 Months Ended

Dec. 31, 2017

Supplemental Cash Flow Information [Abstract]

Schedule of Supplemental Cash Flow Disclosures

The following table includes supplemental cash flow disclosures for each of the years ended December 31:

	2017		2016		2015
	(in millions)
Cash paid for income taxes, net of refunds	$	1,893	$	1,579	$	1,097
Cash paid for interest	135		74		44
Cash paid for legal settlements	47		101		124
Non-cash investing and financing activities
Dividends declared but not yet paid	263		238		212
Capital leases and other	30		3		10
Fair value of assets acquired, net of cash acquired	1,825		—		626
Fair value of liabilities assumed related to acquisitions	365		—		42